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Unformatted text preview: Biology 2F03 Ecology Lecture Notes Biology 2F03 Ecology Lecture Notes Ecology Ecology Question Answer Ecology: Term coined by Ernst Haeckel in 1869, “oikos” house Is the study of relationships of the organisms and the environment they live in and discusses relations of organisms to one another Knowledge is applicable to workings of natural resource management Interdisciplinary science w/ biology central to it Ecologists: People who study hierarchy of universe May use sophisticated or simple tools Their jobs? Propose testable hypotheses related to organization and functioning of the natural world Observe patterns in nature (why this forest or area?) Conduct experiments, and analyze statistics Abiotic Factors: Organisms are being influenced by their physiochemical environment Eg: temperature, moisture, nutrients, toxins 3 abiotic components Atmosphere Lithosphere Hyrosphere Biotic Factors: Organisms are being influenced by the interaction that happen between other organisms Eg: competition, predation, parasitism, disease, herbivory Ecosystem: Fundamental unit in ecology (units) The stage in which the organisms, the actors, play their lives where abiotic and biotic interactions occur Can be large or small (can be a part of an organism in which smaller organisms preside) Are open systems Hierarchy of Universe Individual organism species populations communities biomes biosphere earth Individual organisms: Living entities that are genetically and physically distinct Separate individuals Species: Individuals that are capable of interbreeding and producing viable offspring Populations: Individual of same species that preside in same space and time Communities: Populations of different species that preside in same space and time Organic VS Inorganic Organic: carbon atoms with other atoms (covalently), extracted from living things, do not form salts, have carbo-hydro bonds Inorganic: can be carbon atoms too, but ionically bonded to other atoms (can form salts) Biomass: Weight of the organic matter Emergent property: A property of something that cannot be predicted just bases on that something’s anatomy, only emerges when that something is working as a whole system Biosphere: Space comprised of life on earth (largest ecosystem) Subareas of ecology: 12 areas of ecology 1) Physiological Ecology how does the physiology of an organism adapt/change in response to environmental conditions (mechanisms of living things) 2) Population Ecology studies how many number of a specie are there, tracking population changes 3) Community Ecology studies interactions among populations of species (competition) 4) Ecosystem Ecology studies flow of energy and materials cycles through a system (nutrients, biomass, mineralization, primary production) 5) Landscape Ecology studies spatial patterns and ecological processes at scales of land with...
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This note was uploaded on 12/05/2011 for the course BIO 2F03 taught by Professor Cartwright during the Spring '11 term at McMaster University.
- Spring '11