Recitation+4+_09.30.10_

Recitation+4+_09.30.10_ -...

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Ecology:  The scientific study of interactions between organisms and the environment Discovery science (Experimental approaches have been used in modern  ecology) Link between ecology and evolutionary ecology Ecological data can be applied to environmental problems Ecological research can have different scope depending on what you want to  study: organismal ecology, population ecology, community ecology, ecosystem  ecology… What factors determine distribution of organisms in their environment? o Biotic factors   Living things or all the organisms that are part of the  environment Negative interactions with other species (such as predation, parasitism,  competition, herbivory )can prevent a species from living in an  environment. Absence of other species on which the species of interest depends can  prevent a species from living in an environment. Presence / Absence of food resources determines if a species can  survive in its environment. o Abiotic factors   Non-living factors from the environment Temperature, salinity, sunlight, rocks and soil, pH, mineral composition  etc. Habitat selection behavior: Some organisms do not occupy all of their potential range, 
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Recitation+4+_09.30.10_ -...

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