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Ecological Components of Biodiversity & Global Biodiversity
Transcript of Ecological Components of Biodiversity & Global Biodiversity
Ecosystems & Communities
"Civilization is a state of mutual interdependent cooperation between human animals, other animals, plants, and soils, which may be disrupted at any moment by the failure of any of them" - Leopold
Global patterns of biodiversity
major types of ecosystems that occupy broad geographic regions, impacted by climate, geology & geography
Future of Biodiversity Studies
cataloging the millions of species left undescribed
zero in on areas with high richness & endemism (RAP) rapid assessment program
establish research stations in hotspots
Ecologically functional species / group
Gross productivity = amt of energy trapped in organic matter during a specified interval at a given trophic level
Productivity is higher in more diverse natural communities - because differences among species in resource capture allows more diverse communities to more fully utilize their limiting resources
Functionality - Ecosystem processes, e.g. soil development, nutrient cycling, water filtration and storage
S = Species Richness
E = Evenness
alpha diversity = local species richness
beta diversity = measure of variation among sites within a region
gamma diversity = regional richness