Slide 1
... 1. The more sustainable an ecosystem is, the better it is for the environment and for people. 2. People use ecosystems as sources of food, medicine and economy. 3. Thus, it is in everyone’s best interest to increase the sustainability of ecosystems. 4. How can we do this? ...
... 1. The more sustainable an ecosystem is, the better it is for the environment and for people. 2. People use ecosystems as sources of food, medicine and economy. 3. Thus, it is in everyone’s best interest to increase the sustainability of ecosystems. 4. How can we do this? ...
The Cascading Effects of Invasive Grasses in North American Deserts
... cascade of effects through the plant and animal communities. One of the most influential animal groups in desert systems is small mammals. We sought to learn how small mammals are impacted by fire and how their influence on the plant community differs between burned and unburned habitat. Small mamma ...
... cascade of effects through the plant and animal communities. One of the most influential animal groups in desert systems is small mammals. We sought to learn how small mammals are impacted by fire and how their influence on the plant community differs between burned and unburned habitat. Small mamma ...
The Melaleuca Menace
... outcompeting native vegetation. No native animals are known to feed on it, and it gradually forms an ecological wasteland where little exists but melaleuca trees. The habitat degradation resulting from invading melaleuca affects wildlife such as migrating birds traveling through Florid ...
... outcompeting native vegetation. No native animals are known to feed on it, and it gradually forms an ecological wasteland where little exists but melaleuca trees. The habitat degradation resulting from invading melaleuca affects wildlife such as migrating birds traveling through Florid ...
Eucalypt woodlands Regrowth Benefits
... substantial food reserves and many dormant buds. Trials on Eucalyptus populnea and E. melanophloia ...
... substantial food reserves and many dormant buds. Trials on Eucalyptus populnea and E. melanophloia ...
parks victoria technical series ecosystem conceptual models for
... This report presents ecosystem conceptual models for seven of the nine natural ecosystems that occur across Victoria. For each of these systems the conceptual models identify values, threats, processes and drivers of ecosystem health, as well as potential management responses/ interventions. We aim ...
... This report presents ecosystem conceptual models for seven of the nine natural ecosystems that occur across Victoria. For each of these systems the conceptual models identify values, threats, processes and drivers of ecosystem health, as well as potential management responses/ interventions. We aim ...
Wildland Fire in Ecosystems: Effects of Fire on Fauna
... regimes and show patterns of response to fire itself and to the changes in vegetation composition and structure that follow fire. Animals’ immediate responses to fire are influenced by fire season, intensity, severity, rate of spread, uniformity, and size. Responses may include injury, mortality, im ...
... regimes and show patterns of response to fire itself and to the changes in vegetation composition and structure that follow fire. Animals’ immediate responses to fire are influenced by fire season, intensity, severity, rate of spread, uniformity, and size. Responses may include injury, mortality, im ...
Wildland Fire in Ecosystems: Effects of Fire on Fauna
... regimes and show patterns of response to fire itself and to the changes in vegetation composition and structure that follow fire. Animals’ immediate responses to fire are influenced by fire season, intensity, severity, rate of spread, uniformity, and size. Responses may include injury, mortality, im ...
... regimes and show patterns of response to fire itself and to the changes in vegetation composition and structure that follow fire. Animals’ immediate responses to fire are influenced by fire season, intensity, severity, rate of spread, uniformity, and size. Responses may include injury, mortality, im ...
6-2 Biomes PowerPoint
... seasonal temperatures; droughts & fires common • Not enough precipitation to support large trees; grasses, which grow from their base, thrive despite droughts, fires, animals grazing • Animals are adapted to deal with lack of cover. • Soil tends to be rich in nutrients; most of world’s grasslands ha ...
... seasonal temperatures; droughts & fires common • Not enough precipitation to support large trees; grasses, which grow from their base, thrive despite droughts, fires, animals grazing • Animals are adapted to deal with lack of cover. • Soil tends to be rich in nutrients; most of world’s grasslands ha ...
Eucalypt open-forests Regrowth Benefits
... The biology of open-forest eucalypts The height of an open-forest eucalypt tree is mostly comprised of its single stem, with the crown generally forming less than half of overall tree height (Williams and Brooker 1997). Most openforest eucalypt species develop a lignotuber in the early months of gro ...
... The biology of open-forest eucalypts The height of an open-forest eucalypt tree is mostly comprised of its single stem, with the crown generally forming less than half of overall tree height (Williams and Brooker 1997). Most openforest eucalypt species develop a lignotuber in the early months of gro ...
Fire and the Vegetation of the Lachlan Region
... recommendations, based on the data that is available. Individual species (including threatened species) and identified endangered ecological communities may require specific fire regimes and this cannot be accurately assessed for these entities based on broad observations at the formation and class ...
... recommendations, based on the data that is available. Individual species (including threatened species) and identified endangered ecological communities may require specific fire regimes and this cannot be accurately assessed for these entities based on broad observations at the formation and class ...
Upland and Wetland Prairies in the Midwest and West Coast
... ABSTRACT Prairies are unique from other biomes, in that they are open habitats comprised mainly of herbaceous plants with only a scattering of trees. One of the important ecological attributes of prairies is their high plant species richness. Midwest and West Coast prairies exhibit major differences ...
... ABSTRACT Prairies are unique from other biomes, in that they are open habitats comprised mainly of herbaceous plants with only a scattering of trees. One of the important ecological attributes of prairies is their high plant species richness. Midwest and West Coast prairies exhibit major differences ...
Similarities and Differences between Harvesting- and
... For decades, many have hypothesised that the effects of harvesting and wildfire differed significantly and that this would have significant effects on ecosystem processes and biodiversity. However, it is only recently that an appreciable amount of scientific data has emerged on this topic. In this r ...
... For decades, many have hypothesised that the effects of harvesting and wildfire differed significantly and that this would have significant effects on ecosystem processes and biodiversity. However, it is only recently that an appreciable amount of scientific data has emerged on this topic. In this r ...
Weed Risk Assessment: Calluna vulgaris
... Lifecycle can vary according to habitat. In dry heath and moorland environments four distinct phases occur. In the pioneer stage (0-6 years) it grows vertically from the apex. During the building stage (6-14 years) it grows laterally and forms a dense canopy. In the mature phase (14-25 years) latera ...
... Lifecycle can vary according to habitat. In dry heath and moorland environments four distinct phases occur. In the pioneer stage (0-6 years) it grows vertically from the apex. During the building stage (6-14 years) it grows laterally and forms a dense canopy. In the mature phase (14-25 years) latera ...
Principles of Terrestrial Ecosystem Ecology
... soil microorganisms but also on physical and chemical interactions among rocks, soils, and the atmosphere. The low availability of phosphorus due to the extensive weathering and erosional loss of nutrients in the ancient soils of western Australia, for example, strongly constrains plant growth and t ...
... soil microorganisms but also on physical and chemical interactions among rocks, soils, and the atmosphere. The low availability of phosphorus due to the extensive weathering and erosional loss of nutrients in the ancient soils of western Australia, for example, strongly constrains plant growth and t ...
Chaparral Facts
... require 30 years or more worth of accumulated leaf litter before they will successfully germinate. Yes, many chaparral plant species require some fire cue for germination, but their seeds will survive in the soil until the next blaze, be it 30 years or 100 years from now. The idea that "chaparral-ch ...
... require 30 years or more worth of accumulated leaf litter before they will successfully germinate. Yes, many chaparral plant species require some fire cue for germination, but their seeds will survive in the soil until the next blaze, be it 30 years or 100 years from now. The idea that "chaparral-ch ...
... herbivores (McNaughton 1983). Although herbivores can stimulate primary production in some savanna systems (Frank et al. 1998), this mechanism does not appear to function in KNP where ANPP does not differ in exclosures vs. open areas (Knapp et al. 2012). Thus, the primary production from within the ...
The Ecosystem Concept
... soil microorganisms but also on physical and chemical interactions among rocks, soils, and the atmosphere. The low availability of phosphorus due to the extensive weathering and erosional loss of nutrients in the ancient soils of western Australia, for example, strongly constrains plant growth and t ...
... soil microorganisms but also on physical and chemical interactions among rocks, soils, and the atmosphere. The low availability of phosphorus due to the extensive weathering and erosional loss of nutrients in the ancient soils of western Australia, for example, strongly constrains plant growth and t ...
lesson 1: explore the ecosystem
... components of a geographic area. All biotic (living) and abiotic (non-living) components of an ecosystem impact every other factor either directly or indirectly. Changing climate will affect the plants that are able to survive in a specific ecosystem, which will in turn affect the animals that depen ...
... components of a geographic area. All biotic (living) and abiotic (non-living) components of an ecosystem impact every other factor either directly or indirectly. Changing climate will affect the plants that are able to survive in a specific ecosystem, which will in turn affect the animals that depen ...
A Sensitive Ecosystem Guide - Salt Spring Island Conservancy
... stands may include deciduous tree species making up 25% of the canopy cover. Where are Mature Forest Ecosystems located? Mature forest ecosystems are often found in areas surrounding or bordering other sensitive ecosystems such as old forests and wetlands. Mature forests serve as buffers for these s ...
... stands may include deciduous tree species making up 25% of the canopy cover. Where are Mature Forest Ecosystems located? Mature forest ecosystems are often found in areas surrounding or bordering other sensitive ecosystems such as old forests and wetlands. Mature forests serve as buffers for these s ...
Toward an old-growth concept for grasslands, savannas, and
... ent in grasslands than in forests, many signs of antiquity in old-growth forests (eg large diameter trees, accumulated woody debris; Franklin and Spies 1991) are inapplicable to grasslands. Frequent fires and herbivory are essential to the persistence of most old-growth grasslands, especially where ...
... ent in grasslands than in forests, many signs of antiquity in old-growth forests (eg large diameter trees, accumulated woody debris; Franklin and Spies 1991) are inapplicable to grasslands. Frequent fires and herbivory are essential to the persistence of most old-growth grasslands, especially where ...
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... success in that it is important only in warm situations. In cold climate zones, arid grasslands are C3 dominated, and few if any C4 species are present (Sage et al. 1999). The inability of C4 species to compete in cold climates explains a marked seasonal relationship between water availability and C ...
... success in that it is important only in warm situations. In cold climate zones, arid grasslands are C3 dominated, and few if any C4 species are present (Sage et al. 1999). The inability of C4 species to compete in cold climates explains a marked seasonal relationship between water availability and C ...
Discussion
... organisms. The larger the rhizosphere volume and microorganism biomass, the greater the quantity of soil mineral nitrogen converted. Rhizosphere volume and microorganism biomass are limited by access to simple carbohydrates (Curl and Truelove 1986). Healthy grass plants capture and fix carbon during ...
... organisms. The larger the rhizosphere volume and microorganism biomass, the greater the quantity of soil mineral nitrogen converted. Rhizosphere volume and microorganism biomass are limited by access to simple carbohydrates (Curl and Truelove 1986). Healthy grass plants capture and fix carbon during ...
Dry Sand Prairie - Michigan Natural Features Inventory
... The vegetation of dry sand prairie is typically low to medium in height and somewhat sparse with patches of bare soil common (Chapman 1984). The community is dominated by little bluestem, Pennsylvania sedge and big bluestem (Chapman 1984). Within Michigan, species composition varies across ecoregion ...
... The vegetation of dry sand prairie is typically low to medium in height and somewhat sparse with patches of bare soil common (Chapman 1984). The community is dominated by little bluestem, Pennsylvania sedge and big bluestem (Chapman 1984). Within Michigan, species composition varies across ecoregion ...
Halsey, R.W. and J.E. Keeley. 2016. Conservation issues: California
... There is no single measure of biodiversity for any community type, let alone chaparral. It can be based on landscape or biome diversity or evolutionary relationships such as species diversity or other measures that reflect genetic diversity. It can also focus on ecosystem processes and diversity and ...
... There is no single measure of biodiversity for any community type, let alone chaparral. It can be based on landscape or biome diversity or evolutionary relationships such as species diversity or other measures that reflect genetic diversity. It can also focus on ecosystem processes and diversity and ...
asm_poster_final_doug
... and creosotebush (Larrea tridentata) in pure and mixed stands. The summer growing season following the fire was one of the driest on record (54 mm – mean is 144 mm), and, based on visual inspection, little or no growth occurred on either burned or unburned sites. In the spring of 2004, paired, side- ...
... and creosotebush (Larrea tridentata) in pure and mixed stands. The summer growing season following the fire was one of the driest on record (54 mm – mean is 144 mm), and, based on visual inspection, little or no growth occurred on either burned or unburned sites. In the spring of 2004, paired, side- ...
Fire ecology
Fire ecology is concerned with the processes linking the natural incidence of fire in an ecosystem and the ecological effects of this fire. Many ecosystems, particularly prairie, savanna, chaparral and coniferous forests, have evolved with fire as a necessary contributor to habitat vitality and renewal. Many plant species in naturally fire-affected environments require fire to germinate, establish, or to reproduce. Wildfire suppression not only eliminates these species, but also the animals that depend upon them. Finally, fire suppression can lead to the build-up of flammable debris and the creation of less frequent but much larger and more destructive wildfires.Campaigns in the United States have historically molded public opinion to believe that wildfires are always harmful to nature. This view is based on the outdated belief that ecosystems progress toward an equilibrium and that any disturbance, such as fire, disrupts the harmony of nature. More recent ecological research has shown, however, that fire is an integral component in the function and biodiversity of many natural habitats, and that the organisms within these communities have adapted to withstand, and even to exploit, natural wildfire. More generally, fire is now regarded as a 'natural disturbance', similar to flooding, wind-storms, and landslides, that has driven the evolution of species and controls the characteristics of ecosystems. The map below right shows how each ecosystem type in the United States has a characteristic frequency of fire, ranging from once every 10 years to once every 500 years. Natural disturbances can be described by key factors such as frequency, intensity and area. The map also shows intensity, since some fires are understory fires (light burns that affect mostly understory plants) while others are stand replacement fires (intense fires that tend to kill the adult trees as well.)Fire suppression, in combination with other human-caused environmental changes, has resulted in unforeseen consequences for natural ecosystems. Some uncharacteristically large wildfires in the United States have been caused as a consequence of years of fire suppression and the continuing expansion of people into fire-adapted ecosystems. Land managers are faced with tough questions regarding where to restore a natural fire regime.