RNR 2101 : Ecology Final Exam
Document Summary
Influences on productivity include seasonality, precipitation, soil or water nutrients, and consumers indirectly regulating producers: precipitation alone predicts productivity within similar ecosystems. Due to their influence on planktivorous fish, largemouth bass indirectly affect the populations of zooplankton. Large-bodied zooplankton, the preferred prey of size-selective planktivorous fish, then dominate the zooplankton community. In aquatic systems, co2 must be dissolved in water before being used by aquatic primary producers. Once dissolved into the water, co2 enters chemical equilibrium with bicarbonate, hco3. , and carbonate, co3: carbonate may precipitate out of solution as calcium carbonate and may be buried in ocean sediments, fossil fuels have become a major source of atmospheric co2. Dominance is not due to changes in in pioneer species. Later successional species are simply those tolerant of environmental conditions early in succession. Inhibition early successional species modify the environment to make it unsuitable for other species. i. e. the lupine from mt. Island, which are near the coast of europe.
