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Transcript
Dave Slaven, Mark Lewis & Simon Chapman Urban Ecology in Structure Planning: the Long Bay Example •Most of the catchment is currently farmland •Last remaining rural catchment within Auckland’s Metropolitan Limit •Adjoins the Okura/Long Bay Marine Reserve •Popular destination – well over a million visitors to Long Bay Regional Park annually •The northernmost of Auckland’s East Coast Bays Long Bay: “A framework to guide the development or redevelopment of a particular area by defining the future development & land use patterns, areas of open space, the layout & nature of infrastructure, & other key features for managing the effects of development.” Structure Planning Define the area & identify stakeholders Assemble & map natural resource, physical resource & heritage info Consultation Develop & refine the ground rules Implement the Structure Plan by changing the District Plan The Structure Planning Process •Eventually... A community of 5000 people living in a high quality environment •Environment Court decision required cooperation and compromise •Two competing Structure Plans (Landco & NSCC) •Controversial - The Great Park? Long Bay Structure Plan •Farmland: some habitat for birds, lizards, etc. •Streams: some good fauna habitat & good potential for restoration & enhancement •Bush patches: relatively good diversity of indigenous flora and fauna •Extensive/intensive ecological investigations Long Bay - ecology 2. Inanga 1. Ornate skink Two case studies – tracking the integration of ecology & design: Case study: ornate skink (Oligosoma ornatum) •Habitats: bush edges & rank grassland, often found under logs and other debris •Now considered to be a stronghold for ornate skinks •Few previous records in the area Ornate skinks at Long Bay •Create connections between habitats •Create new habitats •Relocate skinks from works areas •Protect & enhance significant habitats (covenants, fencing, predator control, etc.) Protecting ornate skinks at Long Bay •Provide refugia: log disks •Provide dense low-growing vegetation – especially at bush-grassland interfaces •Maximise connectivity – even narrow habitat corridors can work well for ornate skinks Design responses Example revegetation planting cross-section Skink-friendly planting schedules Skink habitat enhancement examples Enhancing skink habitat with log disks • Degraded spawning habitat at Long Bay • Specific spawning habitat requirements – upper estuary streams with overhanging riparian vegetation • Important whitebait species • An indigenous freshwater fish species Case study: inanga (Galaxias maculatus) •Plant riparian species conducive to inanga spawning •Maximise the amount of habitat suitable for inanga spawning Design responses •Collaborative multi-disciplinary approach – planning, urban design, engineering, surveying, architecture, landscape architecture, ecology, etc. E.g., restoration of ecological sequences from the ridgetops to the sea E.g., wetlands designed to detain & filter stormwater, will also provide natural habitat & public open space integrated with the built environment •Holistic approach – blurring the lines Long Bay: integration of ecology & design