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Ecological and Evolutionary Principles

Ecological and Evolutionary Principles. Ecology. the study of interactions between organisms and their environment distribution and abundance biotic vs. abiotic. Ecological Hierarchy. Biosphere Ecosystem Community Population Individual. Niche.

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Ecological and Evolutionary Principles

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  1. Ecological and Evolutionary Principles

  2. Ecology • the study of interactions between organisms and their environment • distribution and abundance • biotic vs. abiotic

  3. Ecological Hierarchy Biosphere Ecosystem Community Population Individual

  4. Niche • Range of environmental conditions over which an individual exists.

  5. Types of Ecological Interactions • Predation + - • Parasitism + - • Competition + - or - - • Territoriality + - or - - • Commensalism + 0 • Mutualism + +

  6. Predator Avoidance • Crypsis • Chromatophores • Aposematic coloration • Mimicry • Refugia • Mechanical protection- spines, tough exoskeleton, etc.

  7. Population Level Terminology • population density • biomass • immigration, emigration, natality, mortality • cohort • carrying capacity • intraspecific and interspecific competition • distribution

  8. More Terminology • competitive exclusion • disturbance • climax community • succession

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