Community Ecology - Home
... Island size influences immigration and extinction rates because…… • larger islands are more likely to be found by immigrants which increases immigration rate • organisms are less likely to go extinct on larger islands because there is more available habitat • equilibrium number is higher on larger i ...
... Island size influences immigration and extinction rates because…… • larger islands are more likely to be found by immigrants which increases immigration rate • organisms are less likely to go extinct on larger islands because there is more available habitat • equilibrium number is higher on larger i ...
SPATIAL VARIATION IN TREE SPECIES COMPOSITION ACROSS
... instance, if the species abundance distribution follows Fisher’s logseries, then an unbiased index of alpha-diversity is Fisher’s α. This assumption has been tested in several tropical tree communities (Condit et al. 1996), but it would be interesting to test it further in other forests. Many biolog ...
... instance, if the species abundance distribution follows Fisher’s logseries, then an unbiased index of alpha-diversity is Fisher’s α. This assumption has been tested in several tropical tree communities (Condit et al. 1996), but it would be interesting to test it further in other forests. Many biolog ...
5 THE ECOLOGICAL NICHES OF LEPTOSPERMUM SCOPAR/UM
... Field observations of the distribution and relative behaviour patterns of various organisms have led to a wider understanding than could be obtained in the microcosm experiments which have generated much of the theory of ecological niches. In particular this applies to studies of the partitioning of ...
... Field observations of the distribution and relative behaviour patterns of various organisms have led to a wider understanding than could be obtained in the microcosm experiments which have generated much of the theory of ecological niches. In particular this applies to studies of the partitioning of ...
Succession and Stability
... stability is present, populations of individual species can change substantially. – Stability depends on resolution an area is investigated at. ...
... stability is present, populations of individual species can change substantially. – Stability depends on resolution an area is investigated at. ...
threatened biodiversity: understanding, predicting, taking action
... defined à la Lyapunov (internal stability of equilibria). These conditions are unrealistic because: first, food webs are not random, rather the result of coevolution; second, the links between different ecosystem components can be extremely strong or weak and variable in time; and third, community d ...
... defined à la Lyapunov (internal stability of equilibria). These conditions are unrealistic because: first, food webs are not random, rather the result of coevolution; second, the links between different ecosystem components can be extremely strong or weak and variable in time; and third, community d ...
Intertidal Mudflats
... landward migration of high water mark with the result that intertidal flats are squeezed out. Much of this loss is expected in southern and south-east England although research suggests that the major firths in Scotland will also be affected Land claim: Urban and transport infrastructure and for ind ...
... landward migration of high water mark with the result that intertidal flats are squeezed out. Much of this loss is expected in southern and south-east England although research suggests that the major firths in Scotland will also be affected Land claim: Urban and transport infrastructure and for ind ...
Succession and Stability
... stability is present, populations of individual species can change substantially. – Stability depends on resolution an area is investigated at. ...
... stability is present, populations of individual species can change substantially. – Stability depends on resolution an area is investigated at. ...
Murrakool Wildlife
... SUMMARY OF RESULTS These somewhat heartening figures are undermined by the precarious existence that many species displayed. A total of 49 species were found at only one site. For some, this was because of a lack of targeted surveying or their cryptic nature and naturally low densities, but for most ...
... SUMMARY OF RESULTS These somewhat heartening figures are undermined by the precarious existence that many species displayed. A total of 49 species were found at only one site. For some, this was because of a lack of targeted surveying or their cryptic nature and naturally low densities, but for most ...
Ecology (Bio 47) Fall 2002 Friday 6:00 – 7:50 Saturday 9:00 – 9:50
... dioxide, maintaining soil fertility, & retaining water to prevent flooding. ...
... dioxide, maintaining soil fertility, & retaining water to prevent flooding. ...
Potential Effects of Climate Change on New Brunswick Freshwater
... continues to be a common theme for researchers in the province, and even a source of disagreement. While much scientific study has been completed to date on various biological groups, far more remains to be undertaken. Some of this research and the researchers conducting the science explicitly deal ...
... continues to be a common theme for researchers in the province, and even a source of disagreement. While much scientific study has been completed to date on various biological groups, far more remains to be undertaken. Some of this research and the researchers conducting the science explicitly deal ...
17 Seven forms of rarity
... Sixty-one years after the original collection, the plant was rediscovered in 1975 by Douglas Ogle, who found the tree by employing an 'if I were a horse' strategy (Preston, 1976). Reasoning that when Ashe collected, the present paved roads did not exist, Ogle searched along traces of logging roads s ...
... Sixty-one years after the original collection, the plant was rediscovered in 1975 by Douglas Ogle, who found the tree by employing an 'if I were a horse' strategy (Preston, 1976). Reasoning that when Ashe collected, the present paved roads did not exist, Ogle searched along traces of logging roads s ...
Class Examples Habitat Management Prescription
... – Ecosystem management Resource management systems designed to produce essential commodities and other values to meet human needs and desires, and to maintain and enhance soil productivity, gene conservation, biodiversity, landscape patterns, and the array of ecological processes common to healthy e ...
... – Ecosystem management Resource management systems designed to produce essential commodities and other values to meet human needs and desires, and to maintain and enhance soil productivity, gene conservation, biodiversity, landscape patterns, and the array of ecological processes common to healthy e ...
4. Population Dynamics new1
... 2.1.6: Define the terms species, population, habitat, niche, community and ecosystem with reference to local examples 2.3.1: Construct simple keys and use published keys for the identification of organisms 2.3.2: Describe and evaluate methods for estimating abundance of organisms 2.6.1: Explain the ...
... 2.1.6: Define the terms species, population, habitat, niche, community and ecosystem with reference to local examples 2.3.1: Construct simple keys and use published keys for the identification of organisms 2.3.2: Describe and evaluate methods for estimating abundance of organisms 2.6.1: Explain the ...
Southern Rocky Mountains
... implement prescribed grazing systems that ensure long-term ecological sustainability and integrity and are cost effective for livestock interests. 2. Work with local, state, and federal government agencies and land owners to establish wildlife corridors, to reduce habitat fragmentation, and provide ...
... implement prescribed grazing systems that ensure long-term ecological sustainability and integrity and are cost effective for livestock interests. 2. Work with local, state, and federal government agencies and land owners to establish wildlife corridors, to reduce habitat fragmentation, and provide ...
Ecosystem Changes, Biodiversity Loss and Human Well
... agricultural fields or production forests, world fisheries are in imminent risk of collapsing, and about two-thirds of the world’s available freshwater is polluted. During the past centuries, human activity has raised species extinction rates up to 1000 times the values found in the fossil record. A ...
... agricultural fields or production forests, world fisheries are in imminent risk of collapsing, and about two-thirds of the world’s available freshwater is polluted. During the past centuries, human activity has raised species extinction rates up to 1000 times the values found in the fossil record. A ...
Vwaza Marsh Wildlife Reserve - UNESCO World Heritage Centre
... Criteria (v): Vwaza Marsh Natural Heritage site is an outstanding example of traditional human settlement and land use. The coming of the Swahili, Ivory trading by Chikulamayembe, Katumbi (Balowoka) and the Ngoni is a representative of human interaction with their environment. People practiced subs ...
... Criteria (v): Vwaza Marsh Natural Heritage site is an outstanding example of traditional human settlement and land use. The coming of the Swahili, Ivory trading by Chikulamayembe, Katumbi (Balowoka) and the Ngoni is a representative of human interaction with their environment. People practiced subs ...
Glossary Ecology
... Biogeochemical Cycle: The movement of chemical elements between organisms and non-living compartments of the atmosphere, lithosphere and hydrosphere. Biogeography: The study of the geographical distribution of organisms; it largely depends on abiotic factors, resources, community interaction, mobili ...
... Biogeochemical Cycle: The movement of chemical elements between organisms and non-living compartments of the atmosphere, lithosphere and hydrosphere. Biogeography: The study of the geographical distribution of organisms; it largely depends on abiotic factors, resources, community interaction, mobili ...
The Bronte-Coogee Aquatic Reserve is located on the NSW coast
... coverage and was the only species present in all four quadrats (Figure 4). Other than that, there were no distinguishable patterns in the distribution of vegetation within the quadrats. No invertebrates were found during the quadrat surveys on sandy beaches (with the exception of one dead blue bottl ...
... coverage and was the only species present in all four quadrats (Figure 4). Other than that, there were no distinguishable patterns in the distribution of vegetation within the quadrats. No invertebrates were found during the quadrat surveys on sandy beaches (with the exception of one dead blue bottl ...
The Earth’s Biomes - Education Service Center, Region 2
... • Most biomes stretch across huge areas of land. Within each biome are smaller areas called ecosystems. • Each ecosystem includes a specific community of organisms and their physical ...
... • Most biomes stretch across huge areas of land. Within each biome are smaller areas called ecosystems. • Each ecosystem includes a specific community of organisms and their physical ...
North American Lakes and Pond Ecosystems Introductions to the
... 3. What species live in this ecosystem? How does global warming or another serious issue affect their species populations? 4. What do scientists test for in this ecosystem? Are the tests coming up with data that brings the ecosystem’s level to dangerous or deadly? 5. What would be the most harmful i ...
... 3. What species live in this ecosystem? How does global warming or another serious issue affect their species populations? 4. What do scientists test for in this ecosystem? Are the tests coming up with data that brings the ecosystem’s level to dangerous or deadly? 5. What would be the most harmful i ...
Ecological Succession
... species that live in an area • The gradual replacement of one plant/animal community by another through natural processes over time • Can be primary or secondary ...
... species that live in an area • The gradual replacement of one plant/animal community by another through natural processes over time • Can be primary or secondary ...
Creating a Frog Pond!
... There are a number of threats that contribute to the continued decline of our frogs including: • Disease • Habitat Degradation • Stream Drying/ Wetland drainage • Predation by introduced Exotic Predatory Fish • Herbicide and Insecticide use ...
... There are a number of threats that contribute to the continued decline of our frogs including: • Disease • Habitat Degradation • Stream Drying/ Wetland drainage • Predation by introduced Exotic Predatory Fish • Herbicide and Insecticide use ...
BIOL-103: Environmental Science
... Describe three methods of protecting forests form diseases and insects. (Comprehension) Differentiate between the environmental effects of surface fires, crown fires and ground fires in forests. (Analysis) Assess the environmental effects of fire prevention, allowed natural fires, and prescribed sur ...
... Describe three methods of protecting forests form diseases and insects. (Comprehension) Differentiate between the environmental effects of surface fires, crown fires and ground fires in forests. (Analysis) Assess the environmental effects of fire prevention, allowed natural fires, and prescribed sur ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.