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21 Cards in this Set

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inland wetland
Land away from the coast, such as a swamp, marsh, or bog, that is covered all or part of the time with fresh water
benthos
Bottom-dwelling organisms
coastal wetland
Land along a coastline, extending inland from an estuary that is covered with salt water all or part of the year. Examples are marshes, bays, lagoons, tidal flats, and mangrove swamps
lake
Large natural body of standing fresh water formed when water from precipitation, land runoff, or groundwater flow fills a depression in the earth created by (1) glaciation, (2) earth movement, (3) volcanic activity, or (4) a giant meteorite
open sea
The part of an ocean that is beyond the continental shelf
coral reef
Formation produced by massive colonies containing billions of tiny coral animals, called polyps, that secrete a stony substance (calcium carbonate) around themselves for protection. When the corals die, their empty outer skeletons form layers that cause the reef to grow. They are found in the coastal zones of warm tropical and subtropical oceans.
freshwater life zones
Aquatic systems where water with a dissolved salt concentration of less than 1% by volume accumulates on or flows through the surfaces of terrestrial biomes. Examples are (1) standing (lentic) bodies of fresh water such as lakes, ponds, and inland wetlands and (2) flowing (lotic) systems such as streams and rivers
decomposer
A heterotroph that obtains energy by chemically breaking down the remains, products, or wastes of other organisms. Decomposers help cycle nutrients to producers in ecosystems. Certain fungi and bacteria are examples
coastal zone
Warm, nutrient-rich, shallow part of the ocean that extends from the high-tide mark on land to the edge of a shelflike extension of continental land masses known as the continental shelf.--
estuary
Partially enclosed coastal area at the mouth of a river where its fresh water, carrying fertile silt and runoff from the land, mixes with salty seawater
euphotic zone
Upper layer of a body of water through which sunlight can penetrate and support photosynthesis.
euphotic lake
Lake with a large or excessive supply of plant nutrients, mostly nitrates and phosphates
mesotrophic lake
Lake with a moderate supply of plant nutrients
barrier islands
Long, thin, low offshore islands of sediment that generally run parallel to the shore along some coasts
intertidal zone
The area of shoreline between low and high tides
nekton
Strongly swimming organisms found in aquatic systems
plankton
Small plant organisms (phytoplankton) and animal organisms (zooplankton) that float in aquatic ecosystems
oligotrophic lake
Lake with a low supply of plant nutrients
runoff
Fresh water from precipitation and melting ice that flows on the earthUs surface into nearby streams, lakes, wetlands, and reservoirs
surface water
Precipitation that does not infiltrate the ground or return to the atmosphere by evaporation or transpiration
watershed
Land area that delivers the water, sediment, and dissolved substances via small streams to a major stream (river