BIOL241 Study Guide - Final Guide: Sulfate-Reducing Microorganisms, Methane Monooxygenase, Atmospheric Methane
24 Nov 2016
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Document Summary
The study of interrelationships b/w microorganisms and their environments. Understand the biodiversity of microorganisms in nature and interactions in communities. Measure microbial activities in nature and monitor effects on ecosystems. Measuring microbial numbers does not equal measuring microbial activites. Guild: different species that do almost the same thing. Ecosystem: a community of organisms and their natural environments. Freshwater lake ecosystems consist of 3 different communities: Oxic zone aerobes and facultative aerobes, heterotrophic, light. Anoxic sediments from high to low energy yield: denitrifying and ferric iron-reducing bacteria, sulfate-reducing and sulfur-reducing bacteria, fermentive bacteria, methanogens and acetogens. Communities contribute to our ecosystems, not individual species. Animals are chemoorganoheterotrops and plants are photolithoautotrophs, microbes are everything else. Chemoorganoheterotrophs are the most common but not the most important. Photolithotrophs and photoorganotrophs are the most important because they are primary producers make organic matter from inorganic matter.
