ENV100Y5 Lecture Notes - Lecture 14: Carbon Cycle, Water Cycle
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ENV100Y5 Full Course Notes
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Document Summary
Net primary productivity (npp) = gross primary productivity (gpp) - respiration by autotrophs. * npp = energy available to consumers & decomposers. Terrestrial ecosystems: max npp in wet tropics. Substances move among these reservoirs and may take several chemical forms. Residence time in these reservoirs may be seconds, days, years, millennia, Size of reservoirs and rate of cycling may vary in different ecosystems and over millions of years time. Size of reservoirs and rate of cycling can be affected by human activities. Water is both a participant in and the main transport medium for environment processes. Water is both a participant in and the main transport medium for environment. The 2,316-acre quarry application (largest quarry in ontario history) Would extract 600 million litres of water a day. Recharged by precipitation & surface water flows. Carbon is part of all organic molecules. Carbon moves out of atmosphere into biotic. Reservoirs via photosynthesis; from biota to atmosphere via respiration.
