Microbial Ecology 16.2- Microbiology
16.3 Marine Habitats Coastal 7% of area, but most life Open Ocean Pelagic-top layers Demersal-bottom
16.3 Planktonic Communities Plankton-base of the food web Phytoplankton-photoautotrophs Produce 70% of all O2 Zooplankton-heterotrophs Bacterioplankton-decomposers
16.3 Demersal Plankton Extremophile Chemosynthetic Microbes Hydrothermal vents Cold seeps
16.3 Zooxanthellae Symbiotic Corals Most diverse marine ecosystems Very sensitive to changes in temperature or pH (bleaching)
16.4 Biogeochemical Cycles Carbon Cycle Decomposers Methanogenesis Nitrogen Cycle Nitrogen Fixation Nitrification Denitrification Phosphorus Cycle Algal bloom Sulfur Cycle Iron Cycle
16.5 Microbial Symbiosis Mutualism Commensalism Parasitism Both benefit Commensalism One benefits, other is unharmed Parasitism One benefits, other is harmed
16.5 Microbial Symbiosis Ruminant Herbivores Large herbivores have large capacity many- chambered stomachs which house microbes that can break-down cellulose
16.5 Microbial Symbiosis Squid-Aliivibrio Symbiosis Bioluminescence
16.5 Microbial Symbiosis Fungal Symbiosis Mycorrhiza in roots Lichens Pioneer Species Insects Termites & ants
16.5 Microbial Symbiosis Rhizobia Legume Roots- Nitrogen fixation
16.6 Microbial Bioremediation Ore Leaching Petroleum biodegradation Water and Soil detoxification