1 Summary Biodiversity is the variability among living organisms at all levels of organization. Levels of biodiversity • Genetic, species, ecosystem Description of diversity in space • Alpha (a), beta (b), and gamma (g) We still do not know Earth’s biodiversity – lots of work at all levels 2 Summary Biodiversity is important for both anthropocentric (bio‐ resources, ecosystem services, aesthetics) and intrinsic (ethics) reasons Ecosystem services – biological functions that benefit humans • Supporting, provisioning, regulating, cultural Extinctions are occurring at a rate faster than ever before in history. .. how do we study diversity if it is already gone? Causes of extinctions include • Human caused • Stochastic factors (demographic, genetic, environmental, and catastrophic) Conservation genetics is where we use genetic theory and application in conservation of species – conserve their ability to deal with change 3 Summary Evolutionary biology is our understanding of how we came to get all this diversity
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