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Introduction to Natural Heritage Presenter Notes Contents 1. 2. 3. 4. 5. 6. Introduction and Overview....................................................................................... 1 Notes for Slides – How they Work........................................................................... 2 Notes for Slides – Introduction................................................................................ 3 Module 1: Biodiversity Terms and Concepts ......................................................... 3 Module 2: Unique New Zealand ............................................................................. 18 Module 3: Repairing the Tapestry ......................................................................... 36 1. Introduction and Overview Welcome to the Introduction to Natural Heritage Programme. As a presenter you have a vital job in ensuring the programme works for both you and your staff (audience). In making your presentation, please follow these basic rules. 1) Prepare. Make sure you have thoroughly familiarised yourself with the programme procedures and all the content. Check through each slide with the following notes. Add your own notes as you go along. Assess your audience’s level and needs and identify how you will respond to this. 2) Deliver with Professionalism. Make sure your audience is well prepared and enthusiastic about participating. Set up a positive learning atmosphere in a venue free from noise and distraction. Follow the programme as set out and deliver all the material at a good pace, suitable to the audience. Speak clearly. Explain points and answer questions simply and directly. Summarise key points as you go. Engage your audience with occasional questions or by requesting their opinion and input. Adapt to your audience’s knowledge level and special needs. Show loyalty to and pride in the material and the Department. 3) Add Value. Enhance the material with local examples or from your own experience and knowledge. Supplement with your own key points. 4) Some ‘Don’ts’. Don’t waste time or drag it out. Don’t talk down to your audience. Don’t get onto sidetracks or go up blind alleys. Don’t get into too much detail on any given point. Thank you for participating and we are sure you will enjoy delivering this very interesting topic. Presenters Notes Page 1 2. Notes for Slides – How they Work The following notes are intended to augment and add detail to the slides. • The slides themselves are simply visual prompts – they are not intended to stand alone. They need a commentary and explanation by an expert presenter. • There are suggested notes for each slide in simple bullet point format. These cover the basics only of what needs to be explained about the content of each slide. • Each slide is a potential story in its own right. Therefore, in keeping with the exercise as a broad overview, notes and explanations have been restricted to basic definitions and purpose (what and why). It is recommended you stick to this level of detail. However, if there is an important point missing that will add value; add it to your notes. Use this principle sparingly. • Considerable value can be added by the presenter by way of local or actual examples which illustrate a point. Use these liberally. Page 2 Introduction to Natural Heritage 3. Notes for Slides – Introduction Slide Notes Slide 1. • Opening slide. Explains how to use the online training Slide 2. • Introduction slide. • Biodiversity is a ‘must do’ for biodiversity staff; a ‘can do’ for other staff and also available for public also. • Explain times and module content. Own Notes 4. Module 1: Biodiversity Terms and Concepts Slide Notes Slide 3-6. Introduction • Some quick definitions to get the topic moving. • Expand or explain these as necessary. o Genetic diversity: diversity of genes within species. o Species diversity: diversity among species within ecosystems. o Ecological diversity: diversity at the higher level – larger areas, complex systems and multiples of species. • Other explanations/definitions available in Biodiversity Strategy website: www.biodiversity.govt.nz. Note: Numbers of species are guesstimates at best. The real numbers are unknowable, except for a few orders. Slide 7-9. Why is biodiversity important? • Justifies the concept of biodiversity. Presenters Notes Own Notes Page 3 Slide Notes Own Notes • Expand on and give practical examples of each of the points. o Sustains life: e.g., soil bacteria, oxygen cycle, climate, etc. o Economic benefits/ecosystem services: Explain the term ‘ecosystem services’. Resources supplied by or economic activities underpinned by natural ecosystems, e.g., water supply, pharmaceuticals, tourism, fishing, forestry, carbon sequestration, etc. People are becoming more aware of the value that ecosystems provide in supplying services to humankind. o Heritage value: Enjoyment by their grandchildren, future generations. o How our world works: earth sciences, climate change, etc. o Identity: e.g., ‘kiwis’, ‘silver ferns’ makes us distinct. • International conventions/NZ obligations, e.g., Rio conference, Kyoto, etc. Slide 10. Divisions of ecological biodiversity • Explain the major groupings of biodiversity – gives a broad overview of the subject. • Add to these by giving a few local examples. • Do not spend a lot of time on these slides as they are expanded on in later slides explain this. • Explain natural features. Natural features are abiotic non-living elements. While we tend to treat them in the same context as biodiversity, strictly speaking they are not ‘biodiversity’. This can be a bit confusing; however it is important as much of our terrestrial park system was built around preserving natural features such as volcanoes, scenery, fjords, etc. • Locations are: o Terrestrial: Ruahines, Charleston – West Coast, Dunstan Mountains, Campbell Islands o Freshwater: Waimakariri, Lake Manapouri, Waikato o Marine: Great Barrier, Northland, unknown, unknown o Natural Features: Milford Sound, Bullock Creek, Rotorua, Mt Aspiring, Mt Taranaki Slide 11. The scale of our natural heritage • To give an overview of the size and context of biodiversity management. • Explain this will be expanded on in later slides. • Emphasise size and complexity of the task. • Information in this slide obtained from DOC website and 2005 Threatened Species List (published 2007). Page 4 Introduction to Natural Heritage Slide Notes Own Notes • Note: It can be hard to nail down these numbers; variation will be a result of interpretation. Treat them as general indicators only and try not to worry about having them exactly perfect. Slide 12. Biodiversity’s scientific foundation • Gives participants a picture of the disciplines involved – and complexity. • Note: There are many contributing sciences. Just a few are included here. • Give examples of some of the local scientists and their specialities, e.g., botanist, marine ecologist, etc. Slide 13. Introduction • This section introduces the participant to many of the terms and ideas that underpin biodiversity management. • They will need to go through this section and gain a thorough grasp in order to understand the following sections, all of which use these terms and concepts. Explain this to them. • Emphasise that biodiversity is a very large and complex subject. We only cover very superficially the ‘bare bones’ of it. • Encourage them to study and learn further. • Note: There are a few relatively new concepts that you may need to specifically research, e.g., ecological integrity. Slide 14. Biogeographic realms • There are numerous constricts to describe natural systems at an intercontinental scale. The WWF version is depicted here. • Ecozones are the largest unit of measurement; ecoregions are the next. • Ecozone (also known as biogeographic realm) is the largest scale division of the earth’s surface based on historic and evolutionary distribution of plants and animals. • There are eight terrestrial zones – as per the map. • Ecoregion (also known as bioregion) is the next largest and describe district assemblages of plants and animals. • There are 825 ecoregions in the WWF system determined primarily by climate (e.g., grasslands, rainforests, deserts, etc.) • A similar system – not so well developed – applies to marine and freshwater. • Emphasise that New Zealand is part of the Australasian ecozone. • Wallace Line - a clearly defined breakpoint between Eurasian and ‘Gondwanaland’ Presenters Notes Page 5 Slide Notes Own Notes fauna (because of a deep ocean barrier). Named after the biologist, Alfred Wallace. The reason for the uniqueness of much of Australasia’s fauna. Slide 15. Biogeographic realms • Defines some of the major influences on biotic distribution. • Continental drift: the movement of earth’s continents in relation to each other by the process of plate tectonics. Over large periods of time continents can dramatically chance location and alter the distribution of species, e.g., Australia and South America were once joined as Gondwanaland. Both are the only places on earth with marsupials. • Climate change: the variation in the global climate over time – usually in cycles of cooling and warming. Climate change can alter the range and habitat of species and create opportunities or barriers to immigration (land bridges, ice barriers, etc.) • Evolution/speciation: the emergence of new species from the change in inherited genetic traits over time. ‘Natural selection’ has been identified as the major process driving evolution. • Extinction: the cessation of existence of a species. Species become extinct for many reasons, including competition, predation, catastrophic events, climate change, habitat loss or change, and disease. • Migration routes and barriers: routes facilitate movement of species and can be flyways, land bridges, ocean currents, etc. barriers can be oceans, rivers (for small species) mountain ranges and hostile habitats. Slide 16. Biogeography • Endemism is a feature of Australasia and particularly New Zealand and Oceania. o Endemic: kiwi, kokako, - primarily relates to terrestrial animals and plants. o Native: shining cuckoo, snapper, fur seal, Australasian harrier, short-finned eel, and albacore tuna. Particularly relates to more recent bird arrivals and marine animals and plants. o Exotic: introduced species – many are ecological pests, but not always. Many exotic species are benign and inhabit urban or agricultural landscapes within which native species find it difficult to survive, e.g., sparrows, and some perform important economic services, e.g., bees. o Indigenous: both endemics and natives can be regarded as indigenous. Page 6 Introduction to Natural Heritage Slide Notes Slide 17. Biogeography – Isolated biota • Important link to understanding the section on ‘Unique New Zealand’. o Vulnerability: tendency towards flightlessness (takahe), slow breeding (kakapo) and with few defensive strategies (saddleback). o Gigantism: (general rule – smaller animals grow large; larger grow small) e.g., moa, fuchsia (world’s only tree fuchsia), olearia (world’s largest daisy), giant weta (one of the largest insects), Chatham Island parea (larger than mainland pigeon). o Dwarfism: not apparent in New Zealand. Examples are the Maltese elephant – the size of a Shetland pony, and the recently identified Homo floresiensis– the ‘hobbit’ of Flores. o Depauperate: New Zealand has few terrestrial mammals, long-tongues bees and moths, amphibians, freshwater fish, invertebrates and reptiles. o Niche replacement: e.g., large birds –replace ungulates as mega herbivores; kiwi – replace badgers and moles; smaller birds – replace many insects as pollinators. • Note: Isolated biota is a terrestrial/freshwater phenomenon – doesn’t apply to marine systems, these are globally connected. Slide 18. Environmental Componenets • Environments tend to be the ‘abiotic’ – non-living elements – different to ecosystems which are primarily (but not entirely) living elements. • 3 major environment types: land, marine and freshwater. • Environment classifications built around 3 physical ‘drivers’: climate, geology/land form and soil/water chemical properties. • Land environmental drivers are: o Climate: temperature, sunlight, rain/moisture, wind. o Soil/water chemical properties: drainage, calcium, PH, rock age and hardness, particle size, chemical deficiencies (e.g., salinity). o Geology/land form: slope, soil drainage and stability, aspect, cold air drainage. • Slightly different for freshwater/marine: e.g., suspended sediments, light penetration, etc. • Emphasise the ‘connectedness’ of environments – ocean to mountaintop. Slide 19. Environmental Classification • From this concept trace our use of environmental classification systems. Presenters Notes Own Notes Page 7 Slide Notes Own Notes • Expand LENZ and how it is used locally – to identify under-represented environments, locate unusual habitats or species. • Explain MEC and FWENZ are under development – similar principles to LENZ. • MEC covers offshore. Coastal inshore not currently covered by MEC. • FWENZ has 4 components: rivers, lakes, wetlands and estuaries. • Give examples of local environments. • For further information refer to ‘Land Environments of New Zealand’, Manaaki Whenua/Landcare or look up the LENZ website www.landcareresearch.co.nz/databases/lenz Slide 20-21. Environmental Classification • Explain how environments are developed using objective data where available. • Acknowledge and explain limitations, e.g., lack of data in some areas, difficulty in predicting all biotic ‘drivers’. • Explain evolutionary improvement over previous rule-based systems such as ‘ecological districts and regions’. • Explain use in identifying places that are most threatened and most in need of further protection. Slide 22. Ecosystems • Explain the link with environments, i.e., abiotic (non-living) characteristics of environments ‘drive’ biotic (living) distribution of species on land and water. Give some examples: o Dry conditions = deserts = reptiles and plants that like dryness o Wet, warm conditions = rain forest = abundant water/warmth-loving creatures • Ecosystems and their subordinate communities make up the variety (diversity) of life within environments. • Explain we will look at the distinctive NZ ecosystems later – under ‘Unique New Zealand’. Slide 23-25. Ecosystems – structure and components • This slide helps to illustrate how ecosystems are made up. o Structure: the layering and tiering that goes on in ecosystems. o Composition: the living species and non-living elements that make up all the ‘bits’ of an ecosystem. Page 8 Introduction to Natural Heritage Slide Notes Own Notes • Ideally, composition means indigenous but can also include exotic species. • Explain we will look at forests first. • Give some examples of a few components, e.g: o Fauna: pigeon, weta, frogs o Flora: rimu, ferns, fivefinger, etc. • Note: The 3rd element ‘Process’ will be looked at separately in slide 14. • Definitions of everything are not supplied as most are well-known. You may need to revise definitions if you not totally familiar with them. Slide 26. Processes • Uses forests to demonstrate process – the 3rd element of ecosystems. • This slide emphasises the dynamism and interaction going on in ecosystems. • Examples of ‘products’: carbohydrates in leaves (from photosynthesis) available to animals for food; animal population (from fauna processes); enriched soil (from soil process) available to plants for food. • Emphasise how process connects all the components in a dynamic, constantly changing, living system. • Explain the fauna and flora processes will be expanded on in slide 21 under ‘communities’. • Emphasise the complexity of these processes and the fact we know very little about many of them. • Note: Many of these processes are only named and may need short definitions, e.g., photosynthesis – creation of carbohydrates from sunlight; decomposition – breakdown of organic material. Slide 27. Ecosystem processes - disruptive • Emphasise the instability and dynamic change in many ecosystems. • Stochastic + random or unexpected. • Give a local example, e.g., a place recovering from fire or landslide. o Pioneer: a natural colonisation of, often, bare ground – fast establishing species, e.g., manuka, herbs and grasses. o Seral: intermediate stage, e.g., mixed broadleaf, manuka/kanuka shrub land. Presenters Notes Page 9 Slide Notes Own Notes o Climax: end stage - full forest components in place, e.g., rimu/rata/hinau forest. • Note: This is a forest example but similar principles apply to freshwater and marine. Slide 28. Freshwater ecosystems • A second illustration relating to freshwater. • Very similar, but a little more complex due to the hydrology element. • Give a few simple examples: o Fish: galaxids, eels o Plants: potomagetan, sedges, etc. o Littoral: margin between water and land o Benthic: bottom. • Hydrological processes involve such things as seasonal flow rates (flooding and drying), movement of solid material and nutrient levels (eutrophication = high levels). Slide 29. Marine ecosystems • A third illustration for marine – keeps balance between the different types. • Very similar to freshwater. • Give local examples. • Structural terms ‘epipelagic’ through to ‘abyssal’ relate to ‘from shallow to deep’. Slide 30. Key marine geological features • Marine – special features and major processes. • Special features are self-explanatory – marine tends to be terrestrial in reverse, e.g., trench to mountain top. • Emphasise the major oceanic processes around water movement – currents, eddies and upwellings – which drive biodiversity and climate. • Give local examples. Slide 31. Ecosystems • Explain multi-scale concept. Ecosystems can operate at an enormous scale, e.g., northern boreal forests, or tiny, e.g., a puddle. However, generally when we talk about ecosystems we are looking at larger spatial areas. • Explain how we cannot manage ecosystems unless we understand something of how they operate as healthy, functioning systems. Basis of ecology as a science. Page 10 Introduction to Natural Heritage Slide Notes Own Notes • Give an example of knowledge of ecosystems helping management, e.g., removal of exotic pests; return of a species. Communities • Define what a community is, i.e., we generally refer to ecosystems at the larger scale and communities at a smaller scale. • Explain some of the species that make up a typical swamp forest community (shown on the slide) – kahikatea, pukatea; lowland forest birds such as pigeon and kaka; wetland birds (brown teal, bittern, marsh crake); fish (eels and galaxids); and invertebrates (caddis fly, mayfly). • Give some local examples of special ecological communities. Slide 32. Presenters Notes Community composition and process • Draw comparison with ecosystems – communities have their own components and processes. o Functional Guilds: group of species with similar functions, e.g., honeyeater/pollinator (tui, bellbird, stitchbird). o Associations: species that prefer similar conditions, e.g., fuchsia, wineberry associations. o Species and populations: see definition, slides 23 and on. o Trophic levels and food chains: covered in next slide. o Mutualism: where two species associate and both benefit, e.g., plant/pollinator. o Parasitism: where two species associate and only one benefits, e.g., grey warbler/shining cuckoo. o Consumption: where one organism feeds off another, usually without killing it, e.g., herbivorous browsing. o Predation: where one organism feeds off another, usually by killing it. o Functions: the role or ‘jobs’ of species in any given community. o Primary producers: mostly plants. Produce their food from raw materials: sunlight, water, minerals, decomposed matter. o Consumers: mostly animals but some plants. Get their food by consuming other organisms. Subsets of consumers are herbivores, omnivores and carnivores. o Decomposers: extract nutrients from dead organisms or discarded parts (leaves, branches). The process breaks the remaining matter down so it can be recycled through the food chain. Mainly fungi, invertebrates and microbes. • Give examples of each. Page 11 Slide Notes Own Notes • Emphasise that understanding these processes also helps us manage the communities. Slide 33. Trophic levels • Food chains are vital to energy transfer through an ecosystem – emphasises interdependence. • Explain how the ‘connectedness’ can break down if one element of the food chain is taken out. • Illustrates why the mass removal of vegetation is so destructive to biodiversity. Slide 34-37. Species • Sorts organisms so we can understand and manage them. Species is the unit we primarily use for management of organisms (as opposed to ecosystems). • Can go below that to subspecies, e.g., North Island and South Island kaka, and varieties. Usually separated more by geography than genes at subspecies/variety level. • Species management is a key element of biodiversity management. • Evolution operates at the species level, i.e., the gradual changes through adaptation which result in new species over time. • DOC staff rarely work above the ‘family’ level – most work at ‘species’ level. Slide 38. Species - range • Range is an important concept with species. • Give local examples of former range/current range, e.g., little spotted kiwi formerly widespread on South Island west coast and sounds and southern North Island. Now restricted to Kapiti Island, Long Island, Motoroa Island, Tiritiri Matangi Island and Karori Sanctuary. Note: New Zealand fur seal also has an Australian population. Slide 39. Species - population • Populations normally defined by a geographic boundary. • Populations regarded as separate if the individuals cannot, or find it difficult to, interact and breed. Page 12 Introduction to Natural Heritage Slide Notes Own Notes • Can have meta-populations, i.e., groups of populations, and sub-populations, i.e., smaller groups with high degree of interaction between members but less interaction with wider population. • Give examples of local populations: e.g., Puketi kokako, Chatham Island parea (pigeon), Hurunui pittosporum patulum, etc. • Note: Some populations can be the only population, e.g., Chatham Island parea, or remnants of survivors from a number of extinct populations, e.g., Codfish Island kakapo. Slide 40. Presenters Notes Species - population dynamics • Introduce the notions of ‘healthy’, ‘self-sustaining’ and ‘viable’ populations. • This slide illustrates what needs to be in place for a population to be considered ‘healthy’. • Populations also require a certain number of individuals and breeding pairs to be viable. o Dispersal: also know as emigration. Individuals, usually young, who leave the population and attempt to become immigrants into another population. o Breeding: pairing, mating, nesting, fledging – production of young. The number of breeding pairs is a critical measure to the health of a population. o Survival and establishment: the leaving of the family by young to establish their own territories and become independent. Juveniles are often the most vulnerable members of the population and juvenile survival is a key measure of success. o Recruitment: refers to how many individuals reach breeding age and become established members of the breeding population. Recruitment is a function of ‘existing individuals + immigrants + juveniles – deaths and emigrants’ and determines whether or not a population increases, is stable or declines. o Immigration: individuals joining the population from another population or source. We use translocation to substitute or supplement this process if it doesn’t occur naturally. o Age, Class and Sex ratios: the ratio of male/female and juveniles/adults in a population. Balanced ratios are usually desirable goals in species management. o ‘k’ selected: means rapid breeders. o ‘r’ selected: means slow breeders. Page 13 Slide Notes Slide 41. Species - habitat • Introduce the idea of ‘sufficient’ and ‘quality’ habitat as being essential for a species. • Size of populations and the number of populations is limited by the amount of habitat. • Size of populations is also limited by the carrying capacity of habitat. • Carrying capacity – limited by the available resources: food, breeding sites and shelter, and the extent of competition for those. • Explain habitat as an animal‘s or plant’s ‘residence’ or place where it earns its living. • Give local examples of population constrained by habitat carrying capacity. Slide 42-43. Species – niche • Introduce concept of needing to know the species and its needs so we can ensure it thrives. o Frugivore = fruit eater o Insectivore = insect eater o Omnivore = plant and animal eater o Carnivore = animal eater o Herbivore = plant eater • Species cannot survive if its niche is destroyed or occupied by an exotic pest. Examples: trout out-competed grayling in the same niche. Grayling became extinct. Pingao niche (coastal dunes) is being taken over by marram grass. • Explain ‘niche’ as akin to an animal’s or plant’s ‘role’ or ‘profession’, i.e., what it does to earn a living. Slide 44. Ecological integrity • Concept of ecological integrity is relatively new – to update on this fully you can obtain the publication ‘Biodiversity Inventory and Monitoring – a review of national and international systems and a proposed framework for future biodiversity monitoring by the Department of Conservation’, William Lee et al. Landcare Research 2005. This is available as a .pdf file from the Terrestrial Sites Unit RD&I, based in Southern Regional Office. • Ecological integrity is explained in section 9.3, page 109. Page 14 Own Notes Introduction to Natural Heritage Slide Notes Own Notes • Ecological integrity is similar to biodiversity condition, state or health – looks at whole systems, but includes species. • Will be the basis of inventory, monitoring and planning in the future. Slide 45. Ecological integrity – environment representation • Illustrates the equation for defining representation of environments. How much was there? How much is left? How much of that is protected? Is that sufficient? % of original % of existing • Use a local example to illustrate this. • Can also apply to ecosystem types, communities and habitats. • Emphasise it helps us set priorities for protection – building the protected area network. Slide 46. Ecological integrity – species occupancy • This concept can apply nationally, locally or at a particular site. • Emphasise nationally we are probably towards the low side at the moment. Slide 47. Ecological integrity – native dominance • This concept applies particularly to a place but can be applied at a national scale. • Illustrates the point of ecosystems – structure, composition and processes. • Examples: o Structure: general mapping of vegetation types o Composition: species lists o Process: monitoring of events, e.g., fruiting and flowering, fires, mast seasons, breeding activity, etc. • Give further examples. Presenters Notes Page 15 Slide Notes Slide 48. Threats to biodiversity o Clearance, development and harvest: e.g., wetland drainage, milling, eel fishing, etc. o Pollution and water level change: e.g., wetland drying due to drainage of surrounding farmland, run off from agricultural fertilizers, discharges into streams. o Predation: e.g., stoats, cats, rats, magpies, trout, wasps. o Fire and flood: e.g., natural wildfire not normally an issue unless in an area greatly reduced in size and vulnerable – will take a long time to recover. Floods can over sediment streams and wetlands. o Competition: e.g., weeds displace native plants, South African spiders displace katipo, and wasps consume honeydew. o Fragmentation: clearance turns patches into ‘islands’ – reduces carrying capacity and diversity; increases ‘edge’ and makes more vulnerable to threats. Strictly speaking, this could be regarded as an outcome of other threats, rather than a threat in its own right. • Give local examples. Slide 49. Progress Check #1 Own Notes Progress Check Answers Question 1: (1) Ecozone; (2) Ecosystem; (3) Community; (4) Niche Question 2: (a) Endemic – Takahe, kauri; (b) Native – white eye; (c) Exotic – Deer, trout Question 3: Gigantism (b); Depauperism (a); Niche replacement (d); vulnerability (c) Question 4: Environment (a. abiotic); Ecosystem (c. biotic); Habitat (b. species) Question 5: Structure (a. canopy); Composition (c. fauna); process (b. succession) Question 6: Trophic level (d. food chain); Niche (a. species ‘role’); Habitat (b. species ‘home’); Consumers (c. eating other organisms) Question 7: (1) Kingdom; (2) Order; (3) Family; (4) Genus; (5) Species Question 8: Recruitment. Emigration/dispersal. Breeding. Question 9: Representation (c); Species occupancy (a); Indigenous dominance (b) Question 10: Representation (b); Species occupancy (c); indigenous dominance (a) Question 11: Logging; Illegal fishing; Pollution Page 16 Introduction to Natural Heritage Slide Presenters Notes Notes Own Notes Page 17 5. Module 2: Unique New Zealand Slide Notes Slide 3-4. Gondwana Inheritance • This section tells the ‘story’ of New Zealand from start to the present. It introduces the origins of New Zealand and is the basis for what makes New Zealand ‘different’. • The Gondwana story is well-known, but will still be interesting to many. • Emphasise the magnitude of changes over time and how the rise and fall of the land connected places in the past, e.g., Nelson to Taranaki. • The movement comes from plate tectonics and continental drift. Slide 5. Gondwanian Inheritance • Explain ‘original’ inhabitants – those that moved with the land. Most distinctive and unique. • Later arrivals became less distinctive the later they arrived. • Natural colonisation still continuing – e.g., spur wing plover – these are regarded as ‘native’. • Missing biota makes New Zealand particularly unique – the largest land mass where terrestrial mammals are virtually absent. • Quote David Attenborough’s ‘Life of Birds’ – “New Zealand is a window into the world that might have been if mammals had never evolved.” Slide 6. Shaping of New Zealand’s environments • Illustrate New Zealand’s place in the southern ocean. • Point out the Kermadec and Tonga trenches and the Chatham Rise. • Emphasise richness of marine location and uniqueness of terrestrial due to isolation. • Items given are a few examples only – add others if appropriate. • The convergence of warm and cold currents gives New Zealand its unique marine diversity. Slide 7. Shaping of New Zealand’s environments • Some illustrations of how New Zealand’s marine ecosystems developed – characterised by diversity and super-abundance. • New Zealand is a marine ‘superpower’ 80% of our biodiversity is in our marine Page 18 Own Notes Introduction to Natural Heritage Slide Notes Own Notes environment – the fourth largest EEZ in the world, e.g., half of the dolphin and whale species in the world occur in New Zealand waters. • New Zealand is also the seabird capital of the world; it is a breeding ground for 84 species (one-quarter of the world’s total). Slide 8. Shaping of New Zealand’s environments • Illustrates some of the forces that have created our distinct natural features. o Volcanism: created the central North Island mountains, lakes and the volcanic plateau. Bank’s Peninsula is an example in the South Island. o Faulting and mountain building: Southern Alps and northern axial ranges a result of subducting of the Pacific plate (east) under the Australian plate (west) creating uplift and high mountain ridges. Three major features of this are the Hikurangi Trench (*off the North Island east coast), the Alpine Fault (Southern Alps) and the Puysegur margin (off west Southland coast). o Erosion and outwash: from the hills and mountains creates the wide plains, e.g. Canterbury, Manawatu and Southland plains. o Islands: the changing sea levels create a long, complex coastline with numerous islands and a large continental shelf of relatively shallow water. o Glaciation: a major sculptor of the New Zealand landscape, especially the South Island. Creates a whole range of features such as fiords, cirques, lakes and terminal moraines, e.g., Fiordland. o Kaast limestone: created from formerly submerged seabeds containing shells of fossil creatures. Good examples in Paparoa National Park and Waitomo area. o Drowned valleys: coastline that was once river valleys prior to sea level rise, which resulted in the valley floors being drowned, e.g., Marlborough Sounds, Bay of Islands. • Give local examples where appropriate. Slide 9-10. Climate • Climate is a major factor in determining the nature of our biodiversity. o Cold Southland current: brings cold water from the southern oceans – a highly productive system o Warmer northern current: brings in an element of tropical diversity from the islands to the north. o Prevailing westerly winds: create wetter conditions in the west and dryer in Presenters Notes Page 19 Slide Notes o o o o the east. Oceanic location: moderates the climate. Few examples of extreme conditions such as deserts or tundra. Long coastline: the long, irregular coastline is a major feature providing a wide range of coastal habitats and much interaction between land and sea (e.g., seabird colonies nesting on inland mountains, seabirds using braided riverbeds). 15,134km of coastline. Axial ranges: acts with westerly winds to create rain shadows, i.e., dryness on the eastern sides of the ranges. Long, thin profile of the land: results in the land spanning a wide range of longitudinally - 14º of longitude for 3 main islands). Slide 11-12. Isolation and its affect on New Zealand biota • New Zealand is the largest land mass on earth to be completely isolated. Other large islands, e.g., Madagascar, Borneo, Sumatra, have been close enough to continents for regular colonisation by the full range of animals to occur at intervals. • Refer back to slides 35 and 36 ‘Biodiversity terms and concepts’, which explained endemism, gigantism, depauperism, vulnerability and niche replacement. • Gigantism – some examples: o Olearia: world’s largest daisy. o Giant weta: compete with 2 other beetles in Australia and South America for title of ‘world’s largest insect’. o Rewarewa: world’s largest protea. o Takahe: world’s largest rail. • Depauperism: mammals – only a few freshwater fish, 3 species of bat; and 2 amphibians. Slide 13-16. Niche void and replacement o Mega herbivores: ungulates (deer, cattle, antelope), marsupials, and other large-bodied mammals are the prime herbivores on continents. Large birds in the form of moa and takahe were the only large-bodied herbivores in ancient New Zealand. o Pollinators: insects are major pollinators on continents. The lack of longtongued bees and moths means birds and reptiles were the major pollinators in New Zealand. Page 20 Own Notes Introduction to Natural Heritage Slide Notes Own Notes Ground predators: the weka and 3 species of raptor were the main predators of the larger animals. Continents are full of ground predators such as mustelids, felines, rodents and canines – all absent in New Zealand. Endemism Note: Endemism is a feature of terrestrial biota in new Zealand – less so in marine biota. Vulnerability o Browsing: New Zealand flora has evolved few defences against browsing, e.g., leaf chemicals. Exception: heteroblasty (unpalatable juvenile forms) was a possible response to moa browsing, e.g., lancewood, kahikatea. o Ground predators: many birds, reptiles and mega invertebrates are unable to exist in presence of invasive species – slower moving and slow breeders and they lack natural wariness. o Invasive plants: slow growth of many New Zealand plants means they are susceptible to being displaced by more aggressive continental species. o Fire: few examples in New Zealand of fire adaptation. Slow growing flora means slow recovery from fire. Many plants have fire accelerant properties, (e.g., kauri – resinous) without the regenerative adaptation eucalypts have. o Slide 17. Presenters Notes Old New Zealand - marine fauna Emphasises the scale and richness of what would have been an extremely productive and diverse marine ecosystem. • New Zealand has a huge marine zone (3.8 million ha of EEZ) with a lot of variety in its long coastline (15,000 km) spanning a wide range longitudinally and with many islands (approximately 700). o Seabird colonies: huge seabird colonies extended well inland, often onto mountain sides as far inland as the Waikato volcanic cones. NZ is home to 84 species of seabirds (one-quarter of the world population) including 14 of 21 species of albatross. o Estuaries and coastline: features drowned harbours (Bay of Islands, Akaroa, Kaipara) estuaries (Firth of Thames) and spits (Farewell Spit). Give other local examples. These are extremely productive habitats for waders and seabirds. o Marine mammal colonies: New Zealand fur seals and sea lions historically inhabited the whole coastline – many colonies were of immense proportions, numbering millions of animals. Page 21 Slide Notes o o o Slide 18. Page 22 Own Notes Abundance of pelagic fish: pelagic = open ocean. Typical large pelagic fish are marlin and tuna. Fuelled by enormous abundance of smaller pelagic school fish (e.g., pilchards, jack mackerel). Abundance of inshore fish: rocky reefs and close to shore resulted in very large shellfish beds (toheroa, pipi, scallops, toheroa) and highly productive inshore and reef systems (schnapper, kahawai, etc.) Whale congregations and immigrations: populations of whale in New Zealand waters were likely to have been in the vicinity of 50,000 to several hundred thousands for each species, depending on the size and habitat needs of the species. This would have meant massive congregations in sheltered harbours during calving and immense numbers following traditional immigration routes to Tonga. Dolphin and other marine mammals would have had similarly huge populations. Old New Zealand – terrestrial ecosystems • New Zealand was essentially a forested country pre human, except for limited areas of recent volcanic activity on the North Island volcanic plateau and in high country above the tree line. o Northern kauri forest: extended as far south as Waikato/Bay of Plenty. Characterised by stands of immense kauri trees up to 80m tall and 20m girth. Mixed with tall podocarp and broadleaf such as puriri and taraire. o Central and west coast podocarp forest: vast, wet, dense tall forest dominated by rata, rimu, totara and matai and mixed with broadleaf such as kamahi and tawa. Emergent rimu and totara up to 60m in height. o Eastern dryer podocarp forest: less dense and intersected by wetlands or shrub areas regenerating from natural fires. Dominated by totara, matai and kahikatea on the plains in the North Island and western South Island. Higher South Island areas (now in grassland) dominated by Halls totara, beech and broadleaf. There is some evidence of the eastern dry forest already beginning to be reduced by fire as long ago as 2000 years. o Central and southern beech forest: huge stretches of beech. Red, silver and hard beech at lower levels and black and mountain beech at higher levels. Honeydew communities a feature, especially in the South Island, provided a rich nectar source. Introduction to Natural Heritage Slide Notes o o Slide 19. Presenters Notes Own Notes Grasslands, shrub lands and herb fields: primarily in central North Island and in both islands above the tree line. Expanses of tussock and snowgrasses with shrub patches in less exposed areas merging into high herb and fell fields. Probably much less grassland than in modern times – much of our current tussock grasslands is ‘induced’ by historical fire and has never recovered. Alpine zones: over the last 10,000 years these have been similar to what they are today, though probably with more and larger glaciers. Old New Zealand – freshwater ecosystems • Being a wet country, freshwater systems were a special feature of old New Zealand. o Braided rivers: slow moving and meandering braided rivers were more typical of the Hawkes Bay and South Island east coast (e.g., Waimakariri and Rakaia). These were important sites for seabird nesting (e.g., gulls, stilts and plover). New Zealand is one of the very few (5) countries in the world with significant braided river systems (USA, Canada, India, China, New Zealand) o Wetlands: huge areas of wetlands (swamp, mires, bogs) were typical of old New Zealand. Most of these wetlands were within forested areas – quite different to today. Virtually every patch of low lying, poorly drained land was a wetland (defined as areas of permanent or temporary inundation). These ranged from vast flax and reed beds (e.g., Foxton area) to peat bogs (Waikato) and cold mires (Southland). Wetlands probably covered up to a million hectares (including swamp forest – see below). o Swamp forest: tracts of permanent tall trees in moist areas with temporary inundation, usually during winter and flood periods. Swamp forest was dominated by tall kahikatea and pukatea, maire and cabbage trees. The Waikato, West Coast and Heretaunga, Manawatu and Southland plains had fine examples of extensive swamp forest. o Lakes: New Zealand has approximately 4500 lakes. They vary in character from large deep lakes (e.g., Taupo, Wakatipu) which tend to be less productive, to the more shallow and highly productive (e.g., Wairarapa and Ellesmere) with every possible permutation in between and variable in size from huge to small and in location from mountain tarns to dune lakes. o Fast rivers: fast running, high volume rivers such as Waikato, Whanganui, Page 23 Slide Notes Own Notes Buller and Haast were a feature of the landscape, especially in the western catchments. Slide 20. Page 24 Old New Zealand – terrestrial flora • Illustrates some of the distinctiveness of New Zealand flora. • Emphasise floral link to Gondwana, e.g., kowhai found in Chile, southern beech found in Tasmania and Chile. • NZ Conifers and Podocarps: o Kauri: possibly the world’s most massive land organism. A giant kauri, Kairaru, in Tutumoi Range east of Dargaville was measured at 20m (66ft) girth, 31m (100ft) to first branch and 86m (280ft) to crown top = 25% more biomass than largest the Californian sequoia. Lost in forest fires around the turn of the century. Part of the araucarian pine family – also represented in Australia and the Pacific Islands. o Rimu, kahikatea, miro, matai: large podocarps related to Indonesian Dipterocarps. Unusual as fruiting conifers (most conifers have seeds/cones, e.g., kauri) these were found throughout the whole country. Highly productive fruiting, dioecious plants (i.e., sexes on different trees) and have mast seasons (heavy fruiting every 3 to 5 years). Produce hundreds of kilograms of fruit in good years. Also include matai and totara and various ‘silver’ pines. • Nothofagus – southern beech: huge tracts of beech occur in central North Island and South Island. Also highly productive ecosystem driven by mast seed fall and honeydew. Related to Australian and Chilean beech. • Broadleaf forest: kowhai – national icon for nectar-bearing flowers; member of legume family. Hinau – highly productive flowering (nectar) and seed (hinau seed made into nutritious bread by Maori). Other typical widespread broadleaf species include tawa, rewarewa, hinau, kamahi, rata, pukatea (wet areas), maire, fuchsia, coprosma, pittosporum, etc., and, in the north, puriri and taraire. Special plants: • Tell selected stories of some of the unique New Zealand plants. o Hebe: endemic New Zealand family. 35 species. Noted for flowers and now a popular garden plant. o Divaricating shrubs: plants which are twiggy and have leaves turned inwards. Thought to be a defence against moa browsing, e.g., meulenbeckia astonii, or an adaptation to cold. Introduction to Natural Heritage Slide Notes Own Notes • Expand these with other local examples and selected additional items. Slide 21. Old New Zealand - terrestrial fauna • Illustrates some of the distinctiveness of New Zealand fauna. o Flightless birds: these are well-known. o Large unusual invertebrates: giant weta - one of three largest known insects. Giant land snails – carnivorous and large, e.g., kauri snail. Peripetus – left over from Gondwana – ‘missing link’ between worms and arthropods (spiders, etc.) also known as ‘velvet worm’. Live on forest floor in rotting logs. o Unusual reptiles and amphibians: tuatara – ancient living fossil. Pre-dates the dinosaurs and has its own order: ‘sphenodon’. Geckos – New Zealand geckos bear live young. Many are plant pollinators. Frogs – New Zealand leiopelma frogs highly distinctive. One of only two types of frog who bear live young. Live in streams and bush rather than ponds and lakes and make no sound. o Migratory fish: New Zealand was noted for the immense abundance of these. New Zealand eels: migrate to breeding areas in the pacific – near Tonga. Breed only once in their lives. Galaxids: include all the whitebait species – inanga, kokapu, etc. also include the extinct grayling, which was the largest of the galaxids (up to 450mm in length). Extinct possibly because of competition from trout. Galaxids breed in estuaries and the fry migrate upriver in spring as ‘whitebait’. Slide 22. Old New Zealand – terrestrial fauna o Forest birds: New Zealand forest birds were noted for their great abundance. Included honey eaters (tui, bellbird, hihi) and wattlebirds (huia, kokako, saddleback). Pigeon and kaka also contributed with size and noise and huge spectacular flocks. o Mainland seabird colonies: evidence exists of the presence of very large seabird colonies well inland, e.g., Waikato volcanoes, Rimutaka/Tararua ranges and Kaikouras (plus many others). Remnants of these still exist in the Kaikouras. These would have enhanced plant growth and mainland fertility through guano. The harbours and estuaries supported vast flocks of migrating shorebirds, e.g., Paerengarenga, Firth of Thames, Farewell Spit, Akaroa and Presenters Notes Page 25 Slide Notes o others. Tuatara often associated with these colonies, feeding off carrion and the insects the seabirds encouraged and living in their burrows. Kea also preyed on these colonies. Large penguin rookeries were widespread around most of the coasts, especially in the colder south. These would have rivalled those colonies still existing in the subantarctic islands. Productive wetlands: highly productive wetlands would have supported many waterbirds – grey duck, shoveler, teal, pukeko, dabchick, etc., and birds favouring damp areas – banded rail, marsh crake, fernbird, etc. also home to many fish and invertebrates. Slide 23-25. Old New Zealand special events • Periodically, great and spectacular natural displays would have occurred around New Zealand. o Flowerings: periodic, spectacular flowering (December/January) of rata trees and mistletoe (forest) and pohutukawa (coast) turned the forests bright red. Kowhai (spring) and mistletoe also provided yellow splashes. o The dawn and dusk chorus: still possible to hear in places like Little Barrier Island. Deafening chorus of chimes and other calls. Daily event. o Whale migrations: thousands of right, humpback and blue whales would migrate up each coast each autumn to breeding grounds near Tonga. Many harbours would be full of them as they fed and rested. o Other special events already alluded to include mistletoe flowering, seabird and fish migration and beech and podocarp masting. Slide 26-27. Fraying of the tapestry • This can be a somewhat depressing section after ‘Old New Zealand’. Don’t dwell on it too much, especially as the story is well-known. Try to explain some of the less well-known facts and match the audience mood. o New Zealand: the last large habitable land mass to be colonised by humans. o Maori arrival: thought to be approximately 700 years ago, although quite possible that there were earlier arrival events, some of which may not have endured. o Introduction of first mammal pests. Some evidence exists (Holdaway and Worthy) of the arrival of kiore here as long ago as 2000 years. Possibly arrived with early Polynesian visitors who failed to establish. Their arrival would have triggered a nationwide plague that cleared the land of many smaller bird, Page 26 Own Notes Introduction to Natural Heritage Slide Notes Own Notes reptile and invertebrate species. Polynesians hunted vulnerable species: flightless birds were hunted out and seals eliminated from the North Island. o Extensive burning occurred: particularly in the east coast/Hawkes Bay/Wairarapa and Canterbury plains/high country and around the coasts generally. Approximately 25% of forests removed during this time. The process probably exacerbated by climate change – drying out of eastern forests making them highly susceptible to natural, intentional and accidental fires. • Maori were not any more damaging than other human populations. The effects were no different to other places around the world where humans colonised, including North America, Europe and Australia – just more recent! • These changes were major and catastrophic, although probably relatively gradual – occurring over 400 to 500 years, a very long time in New Zealand terms. They resulted in features such as mass erosion, induced native grass and fern lands and denser wet forests following removal of mega herbivores. • Over time Maori introduced ‘wise use’ practices such as tapu and rahui to reduce their impact and preserve resources and developed a strong affinity with the land and nature. o Slide 28. Presenters Notes Opening the door to everywhere Human impacts – European settlement o European arrivals: Tasman (never landed) and Cook. It is likely Norway or ship rats came ashore from Cook’s vessels and started the second great rodent plague. He also released pigs and goats on various islands for marooned seamen. Cook was the first to take logs from Great Barrier and Coromandel. o Sealers and whalers: virtually exterminated the remaining fur seal colonies in New Zealand waters. Continued the release of goats and rats. Whalers active in New Zealand from early in the 19th century. o Settlers: settlement began in earnest in early 19th century with massive land clearance and, later, wetland drainage. Logging was the major industry during the 19th century – New Zealand forests would have appeared to be an ‘endless, dark, dank wilderness wasteland’ to early settlers. o Mammal pests: introduced progressively, both accidentally (rats) and Page 27 Slide Notes Own Notes intentionally (goats – food; deer – hunting; possum – fur; rabbits – hunting; stoats, ferrets and weasels – to control the rabbits!) largely during the 19th century (see later slide). • Overall, this change was even more catastrophic and far more rapid than Maori occupation. Slide 29-30. Extinctions • New Zealand biota is characterised by the high level of extinction (figures in the slide as post 1840). It is difficult to get figures on pre-1840 extinctions because of data deficiencies; however it is likely there were about twice as many. • First wave: exterminated during Polynesian settlement period. o Haast eagle: moa hunting eagle – one of the largest raptors known. o Moa: numerous species from smaller upland and forest moa to larger birds who inhabited more open forests on the east coasts. o Adzebill: heavy ground-dwelling bird distinctive to New Zealand. • Second wave: exterminated since European settlement. o Huia: last recorded sighting in Gollan’s valley, Wellington, circa 1907. o Snipe, thrush, bush wren, laughing owl: all lost from the mainland in the 19th century. Snipe and bush wren became extinct after invasion of Big South Cape Island by rats in 1962. o Grayling: only known fish to become extinct. Last seen in 1950s. o A few examples: others include greater short-tailed bat, Stephens Island wren. • Concern for the future of New Zealand wildlife was being expressed as early as 1850/60 by such people as Ernst Dieffenbach, an early scientist/explorer. Slide 31. Range retraction3 and low densities • The other consequence, often understated because of the number of extinctions, has been catastrophic range retraction, resulting in numerous threatened and vulnerable species, many critically so. • Some of these were rapid and major (e.g., fur seal) – others slower and more creeping (e.g., kokako). • Range retraction continues with many mainland-based species (e.g., kaka, kiwi). Page 28 Introduction to Natural Heritage Slide Notes Slide 32. Exploitation • Industrial-scale exploitation of indigenous natural resources continued until quite recent times and remains in some cases (e.g., fishing). • Resource Management Act a major landmark in controlling the exploitation of indigenous natural resources. Slide 33. Invasive animal pests • Emphasise ubiquitousness of exotic animals, i.e., everywhere in contrast to native spp. • Last point should be emphasised otherwise slide is self-explanatory and needs little additional explanation. Take care not to labour this (and next slide) too much. Slide 34. Spread of invasive weeds • As for previous slide. Emphasise last point. • Slide is largely self-explanatory. Be careful not to labour this one too much as well. Slide 35-36. Today’s land and landscapes • Be sensitive to your audience being totally depressed by this time so don’t dwell on or labour this slide. It largely stands alone and tells its own story. Slide 37. Island refugees • This can be put forward as the ‘good news’ part of the story. Not all has been lost and our islands have proven to be ‘genetic banks’ or ‘lifeboats’ from which many desperately threatened species have been steadily improving their status. • They have been the springboard for a now world-famous conservation effort and the inspiration to ‘halt the decline’ on the mainland. Presenters Notes Own Notes Page 29 Slide Notes Slide 38. Biodiversity hotspots • Purpose of this slide is to emphasise why we need to manage biodiversity, given that some may question why we should bother if the stock is so degraded and the job is so big and difficult. • Reiterate reasons in slide 5 ‘Why is biodiversity important?”. This slide also indicates we have an international responsibility to maintain our biodiversity as signatories to the Convention on Biodiversity. Slide 39. Biodiversity management • This section is a quick recap tour of a selection of notable events in New Zealand biodiversity and conservation history. • Important for people to recognise, and appreciate and honour, the work that has gone before and the achievements to date, which are considerable and have, over time, built an international reputation for New Zealand. • This section is well told in more detail in the book ‘Our Islands, Our Selves – A History of Conservation in New Zealand’, David Young. University of Otago Press 2004. o 1860s: first warnings regarding trouble for indigenous species came from people like Ernst Dieffenbach and JFW Wohlers. Others could also see the disappearance of New Zealand fauna while continuing to ‘collect’ them, e.g., Buller, Reischek. Most of this opinion was overwhelmed by a settlement and exploitation frenzy and an attitude that New Zealand species were ‘inferior’ and doomed to be supplanted by more vigorous ‘northern’ species. o Tongariro: one of the world’s earliest national parks after Yellowstone (1874) and Canadian parks (1880s). Gifted by Tuwharetoa. o Island reserves: the formation of island sanctuaries in the 1890s was a world first and showed great vision. Resolution Island was designated the first ‘sanctuary’ in 1891, with Richard Henry later appointed its curator. Resolution proved unsuitable due to its proximity to the mainland. Little Barrier, compulsorily acquired from Ngati Wai, was designated a nature reserve in 1897 following lobbying by Henry Wright. Still had cats and kiore on it. Kapiti Island designated a reserve in 1897 after lobbying by Buller and protests by Page 30 Own Notes Introduction to Natural Heritage Slide Notes Own Notes Ngati Toa who still have a presence on the island. 1890-1900: first practical conservation. Richard Henry. Appointed curator of Resolution Island, Henry attempted translocations of kiwi, kakapo and other birds to the island. In the end predators arrived to thwart his efforts but he attempted the first serious predator control with stoat trapping. Later he became ranger on Kapiti Island and is thought to have introduced little spotted kiwi to the island – thereby proving to be the saviour of the species. Little management of reserves was actually done in the early days and Kapiti was infested with goats and, later, possums, cats and rats, which meant its value was diminished. o 1894: Lands Act. This Act set up the first forest reserves under the Lands Department. Earlier, Mount Taranaki (1880) had been protected for catchment purposes. The concept of reserved lands was quite novel at the time. o 1900: further parks and reserves. Egmont National Park (1900) and Arthur’s Pass (1929) were designated national parks and more forest reserves, which would later become National Parks, were set aside. Much of this activity was to preserve ‘scenery’ and ‘enjoyment’ rather than specifically biodiversity and was in areas less suitable for agriculture. This is why we have an abundance of mountains and high country forest in our Protected Area Network to this day. National Parks Division of Lands and Survey later became part of DoC. Repairing the Tapestry – the past o 1914: formation of Forest and Bird Protection Society. First incorporated lobby group advocating for nature. Formed by Captain Sanderson and proved to be a major force in years to come, although initially quite small. o 1921: Forest Act. Formed the New Zealand Forest Service. While primarily a harvest and economic group, there was now a government agency with jurisdiction over large areas of native forest and from which the ‘environmental forestry’ groups later grew. Later to become a part of DoC. o 1931 and on: major concern over the huge impact of deer and goat browsing resulted in the first deer culling, which later grew into a major activity. Conducted by the Internal Affairs Department and the New Zealand Forest Service, the deer cullers became a New Zealand icon. Eventually resulted in the Wild Animal Control (WAC) Act. o 1945: Wildlife division of Internal Affairs formed. Initially small and with a variety of responsibilities (e.g., acclimatisation and protection of exotic species o Presenters Notes Page 31 Slide Notes o o o o o o Page 32 Own Notes such as trout) it had responsibility for some wild animal control, island sanctuaries and protection of indigenous species. Later became part of DoC. 1942-60: expansion of national parks. A period when nine further national parks were formed. This was a period where tramping clubs became highly influential in advocating for additional parks and protected areas and when the ‘outdoor recreation’ ethic expanded in New Zealand. 1945: rediscovery of takahe. An event that created world-wide interest. Rediscovered in the Murchison Mountains, Fiordland, by Dr Geoffrey Orbell after being presumed extinct for almost 100 years. 1964: Invasion of Big South Cape Island. One of the Titi (Muttonbird) Islands off Stewart Island. Formerly mammal free and home to the last surviving populations of South Island saddleback, New Zealand snipe and bush wren. Rats invaded from mutton bird boats and the effects of an invasion could be observed. Within12 months the collapse of birdlife was catastrophic and Wildlife Service staff attempted a desperate ‘cold turkey’ translocation of the saddleback, snipe and wren to another nearby, rat free, island. The South Island saddleback survived and thrives to this day on a number of islands but, tragically, the snipe and wren were lost. This event triggered an urgent programme to develop capture and translocation techniques and establish ‘back up’ populations on other islands. This eventually led to the whole ‘safe island’ strategy. 1969: Save Manapouri. This created a major national environmental movement around preventing the raising of Lake Manapouri for power generation. Environmental groups such as Forest and Bird, Greenpeace and the Native Forest Action Council all emerged stronger from this event. 1971: Ramsar convention. Named after Ramsar, a city in India, this was an international convention that identified and sought to protect key aquatic areas around the world (primarily wetlands and wader habitat. New Zealand became an official party in 1976 and now has 6 Ramsar sites: Waituna lagoon (Southland); Farewell Spit (Nelson); Whangamarino (Waikato); Kopuatai Peat dome; Firth of Thames (Waikato Conservancy) and Manawatu River estuary (Wanganui Conservancy). More information on DoC website: www.doc.govt.nz and Ramsar website: www.ramsar.org. 1971-75: The Marine Reserve Act was passed in 1971 and led to the establishment of New Zealand’s first marine reserve at Goat Island, Leigh. Introduction to Natural Heritage Slide Notes o o o o Presenters Notes Own Notes Primarily due to the efforts of Dr Bill Ballantyne who worked hard for the cause of marine reserves and overcame considerable local opposition. Established a model for the subsequent development of further marine reserves – now numbering 27 and covering approx. 2.5 million hectares. Leigh is now an Auckland icon. 1979: Black robin recovery. The now legendary story of how Don Merton and his team brought the black robin back from almost below the trapdoor to the pit of extinction made conservation and species recovery big news and established New Zealand as leader in ‘from the edge’ species recovery. New intensive species management techniques were developed during this project, e.g., cross-fostering. 1987: first major island rat eradication. A joint venture between DoC and Landcare. Field workers and researchers had experimented with rat poison to control or eradicate rats on islands as early as the late 1970s, mostly on tiny areas and with promising results. In addition, there had been at least 5 ‘accidental eradications’ since 1960 (Maria Island (1ha)). In 1987, after an earlier successful trial on a smaller neighbouring island (Hawea), a project to eradicate Norway rats on Breaksea Island (170ha) succeeded brilliantly and led to a string of successful eradications, culminating in the largest ever – 11,000ha Campbell Island in 2003. Techniques evolved from bait stations to aerial and have received world acclaim. 1987: DoC formed. The Department was formed by the passing of the Conservation Act in 1987 and created through a merger of the National Parks/Reserves portion of the Lands and Survey Department, the Environmental Forestry Division of the New Zealand Forest Service and the Wildlife Division of Internal Affairs. This resulted in one of the most unified conservation management structures in the world. In conjunction with this was the allocation of Crown lands, with most native forest lands being placed under DoC protection and management. 1990: Mainland Islands. Born at Mapara in the King Country. The first intensive management on the mainland intended to protect a declining population of kokako by continuously managing mammal pests, especially predators. This was the first major attempt to do intensive restoration on the mainland and spawned a whole new approach to conservation management, taking it beyond ‘island safe-houses’ and, eventually, to ‘ecosystem Page 33 Slide Notes o o o o Slide 40. Own Notes management’. 1990s: aerial control. While poison had been dropped from aircraft for rabbit control and other purposes many years earlier, it was the 1990s that saw the development and major ramping up of this vital and highly successful technique. Initially introduced in response to major forest collapse evident in the central North Island, West Coast and, especially, Northland, it became widespread when TB control became a national issue and DoC joined forces with the Animal Health Board (AHB) as part of the National Possum Control Authority (NPCA). Millions of hectares are now routinely treated by aerial application annually and major forest collapse appears to have been arrested. 1991: New Zealand Forest Accord – an agreement between a coalition of environmental NGOs (led by Forest and Bird and the Maruia Society) and native forest owners and users. Resulted in the effective protection of hundreds of thousands of hectares of privately owned native forest – much of which had been targeted for wood chipping/clearance for exotic plantings. This accord still stands. 1995: First fenced areas. Fences had been proposed as a control method for some time with moderate results. In 1994 DoC joined forces with the Karori Sanctuary to assist them to develop their ambitious predator-proof fence in the middle of Wellington city – as hostile a test as could be imagined. The fence was built in 1999 and has been an outstanding success, safely protecting the most sensitive of animals and plants and spawning a whole raft of similar fenced private areas and community enthusiasm for conservation. 2000: Biodiversity Strategy. Launched to address New Zealand’s obligations under the Convention on Biological Diversity, the Strategy injected over $50m annually into conservation and was the first step in a sector-wide approach to conservation. The theme of the Strategy was to ‘halt the decline’ of biodiversity. Progress Check #2 Progress Check Answers Question 1: Tuatara; Giant weta Question 2: Faulting & earthquakes; Glaciation Question 3: Abundance and variety; Huge seabird colonies Page 34 Introduction to Natural Heritage Slide Notes Own Notes Question 4: Question 5: Question 6: Question 7: Question 8: Question 9: Question 10: Question 11: (a) Kauri forest; (b) Braided riverbeds, swamp forest; (c) Arid deserts Hebe; Podocarp Migratory galaxids; Giant land snails; Flightless birds The dawn chorus; The flowering of the rata (a) Adzebill; (b) Grayling, bush wren; (c) Blue duck (a) Kiore, goats; (b) Wasps; (c) Honey bees Titi Island; Kermadec islands 1914 – Forest and Bird Protection Society formed; 1945 – Rediscovery of the takahe; 1894 – Lands Act; 1887 – First National Park Question 12: 1987 – DOC formed; 1991 – Forest Accord; 1969 – Save Manapouri Campaign; 1971 – Ramsar Convention Presenters Notes Page 35 6. Module 3: Repairing the Tapestry Slide Notes Slide 3-4. Our mandate • Emphasise DoC can only act within its legislative mandate, i.e., must have legal authority. • Subjective as to which are major. Emphasise the range of legislation. • DoC’s main mandate (i.e., validating its existence) stems from the Conservation Act 1987. Slide 5. DOC’s constraints • Emphasise DoC’s activities limited to what it can do with the available funds. • Biodiversity = 52% of DoC funding. Other funds spent on visitors, historic, community, kaupapa atawhai, etc. • DoC biodiversity spending = about 0.1% of total New Zealand gross national product. • Allocation of funds is done through annual business planning process. Slide 6. Statement of Intent • Emphasise SOI covers all DoC operations, not just biodiversity. • Provides the shorter term direction (3 years) within an overall outcome framework. • Outcomes – long term ‘ends’ or goals. • Intermediate outcomes = second level grouping, which together make up the outcome. • Important! Relate each intermediate outcome to the biodiversity concepts in part one: representation, managed places (ecosystems), threatened species (species and populations) and biosecurity (threats). • Outputs – services supplied to achieve the outcomes. • Activities within these are explained later in this presentation. Slide 7-10. How DOC is organised to manage biodiversity • A review of biodiversity roles. Page 36 Own Notes Introduction to Natural Heritage Slide Notes Own Notes • Explain role of your location and specific roles of specific people. Slide 11-15. NHMS How DOC can better manage biodiversity • A snapshot of how NHMS should work. Still under development, this system is a goal the Department is working towards in the longer term. • All new developments and practices are designed to fit into this framework. • Many elements of this have already been incorporated in the Department’s work. Slide 16. Managing representation • Remind audience of the concept of representation in Biodiversity Terms and Concepts. • Emphasise tie-up with legislation, e.g., national parks - National Parks Act; forest and conservation parks – Conservation Act; nature, scenic and scientific reserves – Reserves Act; marine reserves – Marine Reserves Act. • Give local examples of each type of protection. Note: Only a small amount (3%) of marine is near shore on the 2 main islands. Most is around the Kermadec and Auckland islands. Slide 17. Managing representation - Protection beyond DOC • Emphasise much biodiversity is protected ‘off estate’. Amount unknown but probably several million hectares. There is approx. 5,000,000ha of native cover not under DoC protection and most of this will have some form of actual or incidental protection. • Much QEII and private land protected is in the lowlands where DoC estate is underrepresented. • Private reserves and covenants are significant and include the Forest Accord lands – hundreds of thousands of hectares. • Give local examples of each. Slide 18. Managing representation – Selecting places for protection • Emphasise there is some logic in selecting places to protect. • The Natural Heritage Strategy is in draft form at time of writing and is an evolving Presenters Notes Page 37 Slide Notes Own Notes document. • Give local examples of places applicable to each criterion. Slide 19. Managing representation – Selecting places for protection • Many small reserves exist specifically to protect a single species – 3 examples given. Provide further local examples. • Most of our island and wildlife reserves were developed for species protection – not always a single species. Slide 20. Managing representation – Developing protected areas • Explain roles in protecting areas. • Most practical protection work usually done in conservancies. Indicate who does this in your Conservancy/Area. • Give examples of recent successful local protection cases and who dealt with them. Slide 21. Managing representation - Strategic partners - biodiversity • Largely self-explanatory. • Give local examples by naming local organisations. • Explain who/how you work locally with other agencies. Slide 22. Managing places overview • Largely self-explanatory. An overview of the broad types of managed places, with simple definitions. • Don’t give too many local examples at this stage as more to come on each and best done later. Slide 23-24. Island management • Emphasise number of islands. Over 700 ranging from tiny rock stacks and islets to the main islands. • DoC manages about 220 islands. • Highlight major groupings of islands on maps. Expand the group your people are closest to. Page 38 Introduction to Natural Heritage Slide Notes Own Notes • Genetic banks – those islands that hold critical populations – all now entirely pest mammal free. The most vital islands. • Smaller, back-up islands. Islands that act as ‘back stop’ for the ‘genetic banks’ by holding additional populations to guard against what happened at Big South Cape Island. Highlight local or nearest examples. • ‘Green fields’ restoration. Islands being restored from virtually nothing – grassland in many cases. Often used as ‘open reserves’ for public visitation and community involvement, to take the pressure off the vital islands. Tiritiri Matangi has been a great success in this. Others include Mana, Matiu/Somes, (DOC) and Quail and Limestone islands (community groups). • Unique ecosystems. Each ‘one of a kind’ in their own right with many species or subspecies endemic to them., e.g., Kermadec parakeet, Chatham Island parea (pigeon), Campbell island teal, etc. • Very large islands. Now the target for the next step. These are islands with large proportions of them reserved and some significant pests not present, and could be targets for future, more serious restoration, e.g., there is a plan to remove all pests from Secretary and Resolutions islands in Fiordland. • Emphasise the huge success of the Island Restoration Strategy – a world-wide conservation triumph and critical to securing many threatened species. Slide 25. Managing places: Marine reserves • Largely self-explanatory. • Activities usually restricted to preventing poaching and monitoring fish stocks on the assumption that marine ecosystems will recover if exploitation ceases. • Large offshore areas are policed in conjunction with MAF fishery controls. Too large and expensive a job for DoC to do this on its own as it involves operating ‘blue water’ ships and long-range aircraft. Slide 26-27. Managing places: Mainland islands • See DoC website for more information • Trounsen: Kauri forest with kiwi as the flagship species. • Otamatuna: Consists of a core area 2510ha and a larger managed area of about 30,000ha. Kiwi and kakapo are focal species in this beech/podocarp forest. • Boundary Stream: Podocarp forest remnant with some unusual flora associations. Robins successfully reintroduced. Saddleback recently attempted. • Paengaroa: Special reserve with many rare, frost adapted divaricating plants. Presenters Notes Page 39 Slide Notes Own Notes • Hurunui: Largest mainland island in beech forest. Mohua (yellowhead) and orangefronted parakeet focal species. Speciality is beech masting management. • Honeydew, Rotoiti: Beech honeydew system. Kaka a focal species. Pioneered wasp control. • Mainland islands have retained their special research focus. Generally regarded as a success and have spawned the intensively managed areas (below) and private sanctuaries. Slide 28. Managing places: Intensively managed areas • These were generally an extension of the mainland island concept but with less emphasis on research and monitoring, although these activities still occur there. • Many examples nationally. Augment those provided with a prime local example. Number of sites is not clearly defined – 50 is a reasonable approximation. • Mostly places identified with special values to protect – either an outstanding example of its ecosystem type or a number of critical threatened species are present. • Activities at these sites centre round controlling the specific threats to the site and species. Include animal baiting/trapping, weed control, aerial poisoning, fire control, ungulate hunting, species management and predator control. • The area involved is difficult to estimate – probably several hundred thousand hectares. Slide 29. Managing places: Extensively managed areas • Largely self-explanatory. • Describe local examples – extent, nature, location. • Activities in these sites usually restricted to aerial poisoning and ungulate shooting and pre/post operation monitoring (result monitoring) and monitoring to assess effects of the work longer term (outcome monitoring). • Areas treated involve several millions of hectares annually. • AHB often treats large areas of DoC land as a part of TB control work. Integrated with DoC protection work. Page 40 Introduction to Natural Heritage Slide Notes Slide 30. Managing places: Strategic partners - places • Emphasise points on slide. • Emphasise importance and value gained from associating with strategic partners. Give local examples. • DoC unable to do the job alone – receives an enormous amount of input from partners. Slide 31. Threatened species management • First point covers why we deal with threatened species as a separate business steam. Note: there is some debate around this point. Many people suggest all threatened species can be managed through places. Technically this is true (all species need to live somewhere). However, main point is that there are two distinctly different objectives: (1) managed places = indigenous dominance at sites and (2) threatened species = lower risk of extinctions. • Also, many species that are ‘on the brink’ need special programmes and special sites where their survival is the key objective, e.g., black robin, kakapo. • Threat classification: National process for determining which species need the most urgent attention – explained in the next slide. • Recovery planning: National process for deciding ‘how’ to manage a species (or group of species) – explained in slide 89. • Threatened species operations: The field techniques peculiar to species management: translocation, nutrition supplementation, marking and recording, counting, capture, breeding manipulation (nest boxes, cross-fostering, etc.). These techniques are usually applied to individuals of the species. Other techniques to protect species (which could be said to be common with ecosystem management) centre round threat control and habitat maintenance: predator trapping and poisoning, competitor control, preventing/managing disturbance and pollution, and managing effects of catastrophic (stochastic) events. Expanded on in slides 90 and 91. Presenters Notes Own Notes Page 41 Slide Notes Slide 32. Threatened species management: Threat classification • This slide is fairly self-explanatory. Covers the bones of the national process. • Based on a system devised by Molloy and Davis – since revised by Hitchmough et al. • More information available on DoC website. • Give examples of species for each type of threat category. • Provide local examples. Slide 33. Threatened species management: Recovery planning • Also self-explanatory. • The international system is operated by the IUCN (The World Conservation Union). • Step 2: often these groups have experts from outside DoC. • Examples of plans are on DoC website, e.g., dactylanthus taylorii (plant), hoiho (bird), leiopelma frogs (amphibians), Otago and grand skinks (reptiles), Powelliphanta land snail (invertebrates). Show a copy of a plan relevant to a species in or near your location. • Only a comparatively few threatened species have recovery plans. Slide 34. Threatened species operations • This slide emphasises the range of ways we manage threatened species. • National programmes are for a few high profile species – usually with private sponsors involved, e.g., Comalco (kakapo) and BNZ (kiwi). • Integrated site management. Includes islands but also the ‘mainland islands’ and ‘intensively’ managed mainland sites. Most of these have a number of threatened species populations. Many threatened species receive little management but are relatively secure from extinction on offshore islands, e.g., saddleback, hihi, etc. • Local programmes. Most Areas will have their local threatened species programme – usually working to a national recovery plan and involving a number of local threatened species populations. Give a local example. Slide 35-36. Threatened species operations • Gives an overview of the types of work undertaken by threatened species managers and staff. Page 42 Own Notes Introduction to Natural Heritage Slide Notes Own Notes • Inventory and Monitoring: Includes call counts, capture/recapture, plots and census to gauge the health and ongoing viability of populations. • Capture and handling: To assist monitoring and recording or to move individuals. Includes mist netting, pitfall trapping, light trapping, etc. • Recording, measuring and banding: Much effort goes into marking, weighing and measuring individuals after capture so they can be located again and the health of the population assessed. • Habitat improvement: Can involve replanting or providing water to extend or upgrade the habitat available to a species. • Predator control: Involves trapping, shooting, poisoning of (usually) exotic animals that are a threat to the population. • Translocation/Planting: Individuals often need to be moved to add to or establish a new population in suitable habitat. Involves capture, transporting and release for animals and growing and replanting for plants. • Captive rearing: Doc operates captive rearing facilities at Mt Bruce and Burwood Bush for certain critical species where wild population need a boost, e.g., takahe and kokako. • Give some local examples of those activities undertaken by local staff. Slide 37. Threatened species management: Roles within DOC • Largely self-explanatory. • Give examples of such things as national research being done locally and indicate who does these things in your Conservancy/Area. Slide 38-39. Pest management ‘Site led • Explains ‘site led’ pest management. Usually pest management done within ‘managed places’ and ‘threatened species’ programmes to meet the specific objectives of the particular place or species. • People need to understand this site led concept for the next slide. Slide 40. Pest management: ‘Pest led’ • Emphasise most weed and freshwater fish work is ‘species led’. Also some animal pest work, but less so than weeds. Most animal control work is ‘site led’ for Presenters Notes Page 43 Slide Notes Own Notes ecosystem or threatened species management. • Explain examples given. • Give local examples of species led pest work. Slide 41-43. Biosecurity • Biosecurity and prevention of expansion of range of pests is a major issue with over $80 million spent on this annually by various agencies. • Emphasise ‘biosecurity’ is really all pest management work. Often used specifically in the sense of preventing establishment or further spread. • ‘Species led’ pest management is a major programme for DoC, involving all conservancies and Areas. • Biosecurity NZ deals with all pest incursions, i.e., agricultural and horticultural pests such as the painted apple moth. Regional councils, through Regional Pest Management Strategies (RPMS) also work across the board. DoC is more concerned with pests that are a direct threat to indigenous ecosystems and species. • Biosecurity NZ tends to ‘mind the border’; regional councils do much of the local work and DoC ‘minds’ the conservation lands and waters. Slide 44. Pest Management: Strategic Partners - places • Self explanatory and builds on other roles in biodiversity. • Identify local pest TSO and programme managers and discuss what they do. • Emphasise importance of surveillance role for staff and public and how it works, i.e., educating and information people through programmes such as ‘weed busters’ and following up on reports from people. Slide 45. Other biodiversity related operations • An introductory slide to give an overview of the range of other functions that come under biodiversity. • Each is expanded in subsequent slides. Slide 46. Other biodiversity related operations: Science and research Page 44 Introduction to Natural Heritage Slide Notes Own Notes • Through RD&I Division nationally but also local Conservancy Advisory Scientists (CAS). Explain who they are and their role, i.e., to provide local science advice and support to managers and to contribute to national programmes. • Each segment explains the basics of science. Give local examples of these. • Classify: examples given. Other examples include: vegetation classifications, geopreservation lists, etc. in biodiversity we are constantly defining and classifying. • Count: examples given. Inventory and monitoring is a huge part of biodiversity as it tells us where things are, how many we have and what is happening to them. Explain some of the tools we use for this – counts, banding and recapture, vegetation plots, transects, databases, spreadsheets, etc. • Understand: Much science is aimed at improving our basic understanding of ecosystems and species. From this we can better manage them if need be, e.g., bird studies, marine ecology studies, etc. • Manage: Science is constantly working on better ways and means to help operations staff manage ecosystems and species. From these studies improved operating procedures are developed, e.g., stoat trapping methods, refinement of aerial poison operations. Slide 47. Other biodiversity related operations: Science partnerships • Emphasise that science underpins all biodiversity work and the science network is national and international. • Slide is largely self-explanatory and highlights the scale and diversity of people involved. Slide 48-49. Other biodiversity related operations: Fire management • Fire is a major national programme that can affect most Area staff at some time, especially in areas prone to fire. • Explain local set up with fire training - who does what. • Fire training and equipment – readiness for fires. • Explains roles and partnerships in fire fighting. DoC is a significant contributor. • Severity of fires and damage varies significantly year to year depending on weather and happenstance. Presenters Notes Page 45 Slide Notes Slide 50. Other biodiversity related operations: Compliance and law enforcement (CLE) • CLE is also a major issue in Areas and Conservancies, where much of the work is done. • Some examples given. Give additional local examples. • Emphasise CLE can cover a wide range of activities. Slide 51-52. Other biodiversity related operations: Convention on Trade in Endangered Species (CITES) • CITES is a major global treaty and attempts to control an illegal trade worth billions of dollars. Focal species internationally are elephants, rhino, parrots and tigers. • The unusual nature of many New Zealand species makes them attractive international targets. However, as we have no land borders with other countries it is a little easier to control. • Some examples given. Slide 53. Other biodiversity related operations: International obligations and conventions • Some examples given. The slide is largely self-explanatory and some of these have already been mentioned. Most of these treaties are managed through Strategic Policy Division and the Minister’s Office. Slide 54. Other biodiversity related operations: Future development • A taster for some of the major future development in biodiversity management. • Emphasise change and improvement. • Some examples given. There are many more. • Finish on a positive note, especially on achievements which, over time, have been many. Slide 55. Progress Check #3 Own Notes Progress Check Answers Question 1: Parliament; Legislation Question 2: National Parks Act; Wildlife Act; Reserves Act Question 3: Representation; Threatened species Question 4: (a) Conservation Parks; (b) Marine reserves and Sanctuaries, (c) Page 46 Introduction to Natural Heritage Slide Notes Own Notes National Parks; (d) Private land managed by DOC Risk of loss; Beauty Iwi groups; QEII Trust; Community/NGO groups (a) Codfish Island, Kapiti Island; (b) -; (c) Tiritiri Matangi; (d) Chatham Islands Question 8: (a) Hurunui, Otamatuna; (b) Poulter Valley; (c) Tararua Range Question 9: (a) Mainland islands; (b) Extensively managed areas; (c) Intensively managed areas; (d) Islands Question 10: Marine monitoring; Illegal fishing prevention Question 5: Question 6: Question 7: Progress Check #4 Progress Check Answers Question 1: Threat classification; Recovery planning Question 2: (a) 2788 – Total threatened species; (b) 16 – Extinct birds (since 1840); (c) 33 – Extinct species (since 1840); (d) 383 – Nationally critical Question 3: Predator control; Captive rearing; Recording, measuring and banding Question 4: (a) Weed control at Paengaroa mainland island; (b) Deer surveillance in Northland, Prevention of white bryony expansion Question 5: Development of a species count method; Research on shark behaviour Question 6: Protect species; Contribute to the rural fire programme Question 7: Fire costs in 2005/6 were $1.2million; Canterbury is a fire ‘hot spot’ Question 8: Kereru harvest; Illegal logging Question 9: Customs Dept; DOC Area staff Question 10: Convention on Migratory Species; Ramsar Convention; CITES Presenters Notes Page 47