Lecture 18 Ecosystems Email me Back to:
Overview - Link to Course Objectives
Some Physical Constraints on Flow (20.1)
Primary Production (20.2)
B = NPP - G - L or NPP = B + G + L Limits to Primary Production (20.3, 20.4, 20.5, and 20.6)
Question: As CO2 builds up in the atmosphere, some predict that some dry terrestrial ecosystems will become more productive and that there will be little gains in aquatic systems. What is responsible for this? I'll give you a hint - it's not the CO2 concentration, but something affected by it. Secondary Production (20.7, 20.8, 20.9, 20.10, 20.11)
Nutrient Cycling (21.1)
Decomposition (21.2)
Biogeochemical Cycles
Global Carbon Cycle
Global Phosphorous Cycle
Global Nitrogen Cycle note that the role of microorganisms is key
Terms Biomass, Energy flow, Nutrient flow, Turnover, Residence Time, Primary Production, dry weight, Standing Crop, calorimetry, bomb calorimeter, Gross Primary Production, Net Primary Production, Net Change in Biomass, Production Efficiency, Compensation Depth, Eutrophication, Secondary Production, Gross assimilation (= Ingestion), Assimilation, Net Secondary Production, basal metabolic rateAssimilation Efficiency, Secondary Production Efficiency, Consumption Efficiency, Lindeman Efficiency, Nutrient Cycling, Decomposition, Detritivore Community, Lignin, Anoxic, Mineralization, Immobilization, Net Mineralization, Macrofauna, Microfauna, POM (Particulate Organic Matter), Nutrient Spiraling, Upwelling, Biogeochemical cycle, Local model, Global model, Biosphere, Nutrient pool, Flux rate, Source, Sink, Fixation, Denitrification, Pi, Po, Pp (Inorganic, Organic and Particulate Phosphorous) Last Updated March 15, 2007 |