PALec5 - Ecology and Evolution Lecture 5 Ecology: A...

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Ecology and Evolution Lecture 5
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Ecology: A Definition The scientific study of the evolutionary relationships between organisms and their environments.
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Goal of Ecology To understand the principles of operation (within an environment) and to predict their responses to change.
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What Ecology is Not Environmentalism - Advocacy of beliefs (social, political, spiritual) and positions concerning human interaction usually revolving around minimizing human impact on the “wild” world. “Deep Ecology” - A philosophy that places humans as simply one component of the universe and advocates environmental practices that benefit the biosphere as a whole as opposed to short-term human problem solving.
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What Ecology Is Ecology is a science based on biological, physical, and chemical processes. As with all science, it is (or is supposed to be) value free.
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Ecology and Academics Though most closely associated with Biology or Environmental Study departments, ecological studies involve many academic disciplines including: geography, geology, anthropology , sociology , psychology , history and in some cases departments of art and literature.
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Levels of Ecological Study Organism - An entity engaging in chemical and mechanical processes associated with life. Population - A group of interacting and interbreeding organisms (can include an entire species). Community - Different populations interacting with each other, as competitors, predators and prey, or symbiotically.
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Levels of Ecological Study 2 Ecosystem - Organisms and their physical and chemical environments together in a particular area. “The smallest units that can sustain life in isolation from all but their atmospheric surroundings.” Biome - Large-scale areas of similar vegetation and climatic characteristics. Biosphere - The area between (and including) the earth’s soil and atmosphere, permeated by the sun’s rays.
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Abiotic - Nonliving features of an organism’s environment. Examples: Temperature (weather, climate); (Sun) light; water; wind; nutrients; substrate (rocks and soil); fire, etc. Biotic
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This note was uploaded on 02/13/2012 for the course ANTH 2 taught by Professor A during the Spring '08 term at Irvine Valley College.

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PALec5 - Ecology and Evolution Lecture 5 Ecology: A...

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