Chapter14gh - 5/17/2011 PlanktonandMaybeSomeMarinePlants

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5/17/2011 1 Plankton drift of swim weakly, unable to move consistently against waves or current flow Plankton is an artificial category; not based on evolutionary relationship but rather on a shared lifestyle Phytoplankton are autotrophic (make their own food usually through photosynthesis). Productivity depends largely on light and nutrient availability Plankton and Maybe Some Marine Plants Cyanobacteria are the most productive phytoplankters (working in the microbial loop ) Zooplankton ( copepods, krill ) consume phytoplankton species ( diatoms, dinoflagellates, coccolithophores ), forming the food web that eventually supports larger animals. Not all primary producers are drifters (seaweeds, mangroves, salt marshes) Plankton Collection Methods Depend on the Organism’s Size Key Points: When collecting plankton, physical ocean conditions such as dissolved carbon dioxide and oxygen content, pH, temperature, and light intensity are important. As expected plankton concentration have high
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This note was uploaded on 07/18/2011 for the course EARTH SCIE 180 taught by Professor Frankbuonaiuto during the Spring '11 term at CUNY Hunter.

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Chapter14gh - 5/17/2011 PlanktonandMaybeSomeMarinePlants

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