CAS BI 306 Lecture Notes - Lecture 1: Megadiverse Countries, Biogeochemistry, Hydrolase
15 Mar 2016
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Questions asked, methods used, key findings, implication of research. Fungal biodiversity cooperation and combat; effects on soil biogeochemistry (cid:1) (cid:1) Control rate limiting rxn in c and nutrient recycling. 10xs more co2 release than from human emissions. 6mil species on earth reveals when and where they"re active. Most ecosystems around the world have the same species dominant in terms of species decay. What is generating this pattern of diversity and activity: decomposers specialize , litter fungi across decay stages have similar capacities for decay, hypothesis 1: competitive exclusion generates succession. Early decayers should outcompete late stage decayers. Accelerate decay through oxidative enzyme activity: hypothesis 2: facilitation promotes diversity and activity. Dominants should promote rare species through cross feeding. Accelerate decay through hydrolase activity: hypothesis 3: anticipation determines community composition and activity. What controls assembly: fungal species interact regularly, wood-rot fungi were studied to answer this, different species colonize a piece of wood, which can be seen by lines.
