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The Scope of Ecology
Energy Flow Within the Ecosystem
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acre adapted agriculture algae Amer animals annual autotrophic bacteria become biological biomass biosphere biotic Chapter chemical chlorophyll climate competition components consumers crop culture cycle density desert detritus diagram diversity diversity indices E. P. Odum ecological succession ecologists economic ecosys ecosystem energy flow environment environmental estuary example factors fish food chain food energy forest fuel fuel-powered function Fundamentals of Ecology gradient grass grassland grazing herbivores heterotrophic important increase insects interactions kcal lake land light limiting living man's marsh materials natural nitrogen nutrients organic matter oxygen percent phosphorus photosynthesis physical phytoplankton plankton plants pollution pond population density population growth predator primary production ratio recycling regions Science Shannon index shown in Figure Simpson index soil solar energy species steady-state structure sulfur cycle temperature terrestrial tion tropical types unit vegetation waste zone