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Lecture 2

BIO205 Lecture 2 (Sept 12, 2012).docx

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University of Toronto Mississauga
Christoph Richter

BIO205 Lecture 2 - Lecture 2: What is ecology? - Stella’s sea lion populations were impacted by fisheries - What was ecology in the sea lion example? - What is ecology to you? o Study of interaction of organisms and ecosystems o Relationships between environments - Is ecology the same as environmentalism? - Ecology is the study of the relationship between organisms and their environment o The scale of the individual flower and its relation within the biosphere  Individual  populationcommunityecosystemlandscapebiomebiosphere  When you go from an individual, it increases in scale as it goes towards biosphere; depending on the organism you study, it’s a rough scale  However, for migrating species, it’s a little different  Also, the complexity increases as it goes from individual towards the biosphere end - Organisms are influenced by range of factors o Temperature: flower might not grow if it goes to 0 degrees  Also moisture, disturbance, nutrients and toxins  Abiotic factors: factors that does not involve living things o Competition: with other species
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