6.3.notebook

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February 11, 2013

Feb 7­9:59 AM

A measurement of the amount ofsalts dissolved in water

Salinity

Feb 7­10:01 AM

The uppermost layer of anaquatic ecosystem, where there isenough light for photosynthesis tooccur

Photic Zone

6.3.notebook

2

February 11, 2013

Feb 7­10:02 AM

The very bottom of a body ofwater; can be pitch dark or sunlit,depending on the depth and clarityof the water

Benthic Zone

Feb 7­10:03 AM

The shallow, near­shore portion ofthe photic zone

Littoral Zone

6.3.notebook

3

February 11, 2013

Feb 7­10:04 AM

The area farther from shore thanthe littoral zone, where no rootedplants exist

Limnetic Zone

Feb 7­10:04 AM

area of land that is floodedwith water at least part of theyear

Wetland

6.3.notebook

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February 11, 2013

Feb 7­10:05 AM

Area near a river’s course that isflooded periodically

Flood Plain

in Brecksville, this area is.....

Feb 7­10:06 AM

body of water that occurs whererivers flow into an ocean or inlandsea

Estuary

6.3.notebook

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February 11, 2013

Feb 7­10:07 AM

vertical flow of cold, nutrientrichwater toward the surface

Upwelling

Feb 7­10:08 AM

Identify three factors that characterize aquatic systems.

­Salinity­depth ­water movement flowing or standing

6.3.notebook

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February 11, 2013

Feb 7­10:20 AM

Explain why a freshwater fish cannot survive in salt water.

a freshwater fish placed in salt water would die from water loss as water moves from the fish to the salt water.

Feb 7­10:23 AM

Give one reason why there tends to be more organisms in the photic zone than in the aphotic zone

there is much more dissolvedoxygen in the photic zone to support life because of photosynthesis

6.3.notebook

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February 11, 2013

Feb 7­10:26 AM

Flowing­water ecosystem

Water that moves almostconstantly

Ex: river, oceans, fish tank

Feb 7­10:30 AM

Standing­water ecosystem

Water that does not move ormoves slowly

Ex: pond, marsh, swamp

6.3.notebook

8

February 11, 2013

Feb 7­10:33 AM

Identify three major ocean ecosystems.

Intertidal ecosystems,

neritic ecosystems,

open­ocean ecosystems

Feb 7­10:35 AM

Why is microscopic phytoplankton very important as a food source?

Microscopic phytoplankton are the base of food chains in theopen ocean, because the water is too deep for plants .

6.3.notebook

9

February 11, 2013

Feb 7­11:10 AM