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Productivity

  • 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

Healthy Ecosystem

Stable Ecosystem

Resistance

Resilience

Biodiversity Hotspots

Ecological Components of Biodiversity & Global Biodiversity Patterns

Measuring Biodiversity

Biomes

major types of ecosystems that occupy broad geographic regions, impacted by climate, geology & geography

S = Species Richness

E = Evenness

Diversity Index

alpha diversity = local species richness

beta diversity = measure of variation among sites within a region

gamma diversity = regional richness

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

Ecology Review

Ecosystem Dynamics

Ecosystems

Population

Community

Trophic structure

Food Web

Niche

Ecologically functional species / group

Global patterns of biodiversity

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
  • Latitude
  • Elevation
  • Precipitation
  • Habitat Heterogeneity
  • Area
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