Biodiversity. Trophic Levels 10% Rule Net Product Productivity.

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Presentation transcript:

Biodiversity

Trophic Levels

10% Rule

Net Product Productivity

Biodiversity

California Gnatcatcher

Robert MacArthur & E.O. Wilson Island Biogeography

Island Biogeography Galapagos Islands

Speciation  Darwin’s Finches

Geographic Isolation

Continental Drift

Mass Extinctions

Paul and Anne Ehrlich

Interspecific Interactions InteractionInd. # 1Ind. # 2 Competition-- Predation+- Mutualism++ Commensalism+0

Competition  Interspecific  Intraspecific

Competitive Exclusion Rule  Two species cannot occupy the same ecological niche

Resource Partitioning

Character Displacement

Predation

Plant Defenses  Physical  Thorns  Spines  Chemical  Poisons  Nicotine  Strychnine  Morphine  Tannins

Animal Defenses  Physical  Shells  Horns/Antlers/Quil ls  Teeth  Chemical  Poisons  Odors

Animal Defenses  Cryptic Coloration  Aposematic Coloration

Animal Defenses  Batesian Mimicry  Mullerian Mimicry

Mutualism

Commensalism

Keystone Species

Principles  P 56 # 10  P58 # 10 G  P84 # 17  P 94 # 1