BIOL208 Lecture Notes - Starch, Keystone Species, Ecological Pyramid
9 Apr 2014
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Document Summary
Biol 208 primary productivity and energy flow (march 28, 2014: topics of focus, primary production, trophic dynamics in ecosystems, top-down controls on production, biodiversity and ecosystem functioning, ecosystems, mostly, we have looked at: Interest in abiotic environment based on its effects on organisms . In turn, organisms influence the environment (eg. succession: main components: Biogeochemistry raw materials for the ecosystem. Energy needed to convert raw materials into life forms. Organisms energy input lets them exist; in turn, they participate in energy flow and nutrient recycling. * bags of energy/nutrients : we will not worry too much about their individual ecology, *boundaries hard to define. Ex. we have a forest and inside the forest is a stream (an aquatic component) are they two different systems or one: they are not independent from each other. *boundaries are artificial but they exist because of legislation: models of food webs, ecosystem energy, and nutrient cycling, modelled through - trophic webs (producers consumers), compartmental models.
