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Definition
| group of primitive, non-flowering plants |
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Definition
| not containing oxygen or not requiring oxygen |
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Definition
| fish that migrate from their primary habitat in the ocean to freshwater to spawn |
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Definition
| a condition where no oxygen is present |
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Definition
| plants and animals living in or on the bottom in aquatic habitats |
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Definition
| a mix of fresh and salt water |
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Definition
| fish that migrate from their primary habitats in freshwater to the ocean to spawn |
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Definition
| minute shrimp-like crustaceans; often they are the most common zoo plankton in estuarine waters |
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Definition
| organisms that break down dead organic matter |
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Term
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Definition
| decomposed or partly decomposed plant and animal matter |
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Term
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Definition
| microscopic bubbles of oxygen that are mixed in the water and occur between water molecules. Dissolved oxygen is necessary for healthy lakes, rivers, and estuaries. |
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Definition
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Definition
| the study of interrelationships of living things to one another and to their environment |
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Definition
| an interactive system of a biological community and its non-living environment |
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Term
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Definition
| the wearing away of ;and surfaces by wind or water |
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Definition
| semi-enclosed, tidal,coastal body of water open to the sea in which fresh and salt water mix |
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Definition
| the fertilization of surface waters by nutrients that were previously scarce. Eutrophication through nutrient and sediment inflow is a natural aging process by which warm shallow lakes evolve to dry land |
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Definition
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Definition
| the sequence in which energy as food is transferred from on group of organisms to another |
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Definition
| complex interaction of food chains in a biological community |
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Definition
| the place where a plant or animal lives |
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Definition
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Term
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Definition
| low, wet grassland without trees, periodically covered by water |
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Definition
| free swimming aquatic organisms such as fish |
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Definition
| an inorganic nutrient essential for plant growth and reproduction when in oxidized forms (nitrate, nitrite, ammonia); excess can cause eutrophication |
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Term
| Non-point source pollution |
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Definition
| pollutants entering waterways from a general area such as runoff from farmland or suburban communities |
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Term
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Definition
| chemicals (primarily nitrogen and phosphorous) necessary for an organism to live |
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Term
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Definition
| a measure of the acidity or alkalinity of a material, liquid or solid. |
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Term
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Definition
| an inorganic nutrient essential for plant growth and reproduction; excess can cause eutrophication |
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Term
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Definition
| the plant form of plankton, most are microscopic |
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Term
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Definition
| the process by which plants convert sunlight into living tissue using carbon dioxide, water, and nutrients;primary production |
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Term
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Definition
| passively drifting or weakly swimming organisms living suspended in the water column |
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Definition
| pollution from a definable source |
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Term
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Definition
| the addition of a substance to and environment in greater then natural concentrations as a result of human activity producing a net detrimental effect on the environment |
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Term
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Definition
| The measurement of the amount of dissolved salts in water, usually measures in parts per thousand |
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Term
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Definition
| particles which accumulate on the bottom of a waterway |
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Term
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Definition
| primary=screening or settling large solids out of sewage (only removes visible material)secondary=removal of organic material in sewage by aeration and bacterial action tertiary=removal of nutrients and traces of toxic organic material from sewage by additional treatment process |
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Term
| Submerged Aquatic Vegetation (SAV) |
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Definition
| rooted vegetation which grows beneath the water surface |
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Term
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Definition
| periodic movement (raising and lowering) of a body of water by the gravitational attraction of the moon and sun with the rotation of the earth |
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Definition
| streams and rivers that supply a larger body of water |
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Definition
| the measurement of water cloudiness; it may be affected by sediment and plankton concentrations |
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Term
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Definition
| an area of land that is drained by a river or other body of water |
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Term
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Definition
| the animal form of plankton |
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