GEV 1050 Lecture Notes - Lecture 8: Intertidal Zone, Coast, Limnetic Zone
28 Nov 2016
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Document Summary
Human impacts on both fresh and salt. Affected by: dissolved oxygen level, light penetration, ph, currents. 3 main ecological categories of organisms: planktons (free floating) Oxbow lakes: lakes that were a river. Water moves from headwaters to rivers to coastal ocean. Edi(cid:373)e(cid:374)t: change in physical features and food sources (abiotic differences) result in change in biological features and ecosystem functions. In streams, organisms are adapted to fast flowing water (hooks, suctions, flattened bodies) Body of freshwater that does not flow: more productive than rivers and streams, more plants/animals. 3 zones: littoral (rooted plants) shallow water area along the shore, most productive. Low concentration of nutrients no plants giving oxygen, decomposing stuff at the. Most organisms in the limnetic zone (wetlands): marshes and swamps: Land with shallow, freshwater for at least art of the year. Were once regularly filled: more recently, ecosystem services have been better recognized, flood protection, water filtering.
