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Fresh and Salt Water Systems Ch. 3&4

Terms in this set (18)

Ecosystem
A community of living organisms and their abiotic environment
Diversity
In an ecosystem refers to the variety of different kinds of species living there.
Upper zone of a lake
Lots of different plants like bulrushes, water lilies, and sea weed AND lots of Animals live here
Middle Zone (Lake)
There is lots of open water here, and this area has lots of light penetration
Lowest Zone of a Lake
Here, no light penetrates, No plants live here, and Food for fish that live in this layer floats down from above
inertidal zone
Portion of the shoreline that lies between the high and low tide lines where animals must be able to survive pounding waves
Estuary
A habitat in which the fresh water of a river meets the salt water of the ocean - most Diverse and Richest Ecosystem
continental shelf
A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent and Water is WARM here
oceanic zone
Vast open ocean from the edge of the continental shelf outward - DEEPEST part of the ocean, no light
Adaptation
A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
Temperature
Fish and species are often only adapted to one so that they do not freeze or get too hot
Light
Most ocean organisms thrive in this, Plants need it for Photosyntesis
Pressure
This is highest in the deepest part of the ocean, only adapted species can survive it
Salinity
If an organism lives in this - it cannot also survive in fresh water.
Population
A group of individuals that belong to the same species and live in the same area
Agriculture
73% of water used by people around the world is used in this for irrigation to grow crops
Industry
22% of the worlds water is used in this and Water is used as a coolant, a solvent for washing, and for diluting pollutants when releasing them into the environment
Domestic
5% of the worlds water is used here, Our water is purified and pumped to us
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