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28 Cards in this Set

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  • Back
Biogeochemical Cycle
Natural processes that recycle nutrients in various chemical forms from the "non-living" environment, to living organisms, and back to the "non-living" environment
Gaseous Cycle
Cycle where the atmosphere is the primary reservoir for storage
Sedimentary Cycle
Cycle involves movement of materials from the land to the sea and back again
Hydrologic Cycle
Movement of water between air, seas, lakes, rivers, land, soils, glaciers and living organisms
Process in which chlorophyll containing cells in green plants convert incident light into chemical energy and synthesize organic compoinds from inorganic compounds
Liquid Water-->Water Vapor; from wet surfaces; Energy absorption process
Transfer of moisture from plant tissues to Atmosphere
Movement of water from the atmosphere to the Earth's surface
Portion of the precipitation which percolates into the ground making up the subsurface water and deeper aquifers
Initial Abstraction
Portion of the precipitation which is temporarily accumulated (parking lots, puddles)
Portion of the precipitation in Excess of that which the ground can absorb or is temporarily accumulated
Process which breaks Nitrogen compounds down into ammonia
Process in which NH3 (ammonia) is converted into nitrites (NO2-) and then nitrates (NO3-)
Anaerobic process which converts nitrates into gaseous forms of Nitrogen utilizing bacteria
Totality of interactions amoung organisms and the Environment in the area of consideration. A BIOLOGICAL COMMUNITY
Organisms that manufacture the organic compounds they need as nutrients from simple inorganic compounds
Primary Consumer
Animals that feed directly on plants as the first stage in a food pyramid or chain
Secondary Consumer
Animals that feed on other primary consumers as the second stage in a food pyramid
Tertiary Consumers
Animals that feed on animal-eating-animals as the thrid and further stage in a food pyramid or chain
An animal that feed upon plants
A flesh-eating animal
Feeds on both plants and animals
Trophic Level
Each time that energy passes from a plant to an animal, or from an animal to an animal, its motion through the ecosystem is temporarily stopped. Each of these temporary stopping points is called a "Trophic Level"
Food Chain
Sequential predation in which organisms feed opon one another, with organisms at one level providing food for organisms at the next level. Energy is thus transferred through the ecosystem. One-way flow.
Food web
Complex networks or "interrelated" food chains or feeding relationships
Organic matter in the environment
Food Pyramid
Another conceptualiztion of energy transfer through the ecosystem from large numbers of "lower" forms of life through succeedingly smaller numbers of "higher" forms, as the organisms at one level are eaten by the organisms at a higher level.