GEOL 3070 Chapter Notes - Chapter 14.4-14.6: Nematode, Commensalism, Parasitism
25 Apr 2017
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Determined by the size and shape of the sediment particles and the organic content of the sediment. Determined by the size of the spaces between the particles and the availability of dissolved oxygen. The finer the mud particles, the tighter they pack together and the slower the exchange of water. Detritus: any loose material, especially decomposed, broken, and dead organic materials. Formed from plant and algal material that is degraded by bacteria and fungi. Bioturbation: reworking of sediments by organisms that burrow into them and ingest them. Deep-sea floor = flat abyssal plains, the trenches, and the rocky slopes of seamounts and mid-ocean ridges. Benthic meiofauna: the small invertebrates that live in benthic environments such as between grains of sand. Commensalism: an intimate association between different organisms in which one is benefited and the other is neither harmed nor benefited. Mutualism: an intimate association between different organisms in which both organisms benefit.
