Biological Communities

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Presentation transcript:

Biological Communities

Community Energy Energy enters biotic communities via photosynthesis transferred between organisms in feeding used for growth, energy via respiration

Food Webs The biota of an ecosystem are tied together in complex networks – food webs - that reflect feeding relationships

Eco pyramids energy transfer numbers of organisms A large base needed to support the levels above amount of biomass

Energy transfer Inefficient: only a small fraction of food converted to ATP Where is the remainder? ~10% stored in tissues (biomass) waste products Converted to heat (respiration)