BIOLOGY 287 Lecture Notes - Lecture 18: Aphotic Zone, Hydrothermal Vent, Cyanobacteria

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Food chains & food webs: food chain, predators, scavengers, feeding relationships. : sequence of organisms representing a feeding hierarchy: one organism is food for the next organism in the sequence. : hunters feed on live prey (the hunted) : feed on dead and decaying animal or plant remains (detritus) : much more complex than a simple food chain: many organisms consume multiple types of prey. : describes the intricate nature of multiple interacting food chains in a: food web community. The flow of energy: from the producers to the consumers to the decomposers: Grazing food chain/web: sunlit surface waters, therefore, many animals live close to their food source in the upper water column, this feeding relationship can be generalized by the grazing food chain/web in the. : greatest concentration of primary producers photic zone: phytoplankton zooplankton nekton bigger nekton, the big 4 autotrophs in the open ocean: diatoms, dinoflagellates, coccolithophores (single-celled algae), and cyanobacteria (photosynthetic bacteria)

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