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Aquatic Stream Ecology 1
N/A
36
Environmental Studies
Undergraduate 3
10/11/2010

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Term
Abyssal Plain
Definition
Deep ocean, 4000 - 6000 meters.
Term
Asthenosphere
Definition
Below lithosphere, involved in plate tectonics.
Term
Benthic
Definition
Referring to organisms living on or in the bed of a water body.
Term
Carbonate Compensation Depth
Definition
Is the depth in the oceans below which the rate of supply of calcium carbonate lags behind the rate of solvation, such that no calcium carbonate is preserved.
Term
Carotenoid
Definition
Pigment that assists in photosynthesis.
Term
Chemosynthesis
Definition
Energy is derived from simple inorganic compounds (Sulfur, methane).
Term
Competitive Lottery
Definition
Maintains a high species richness since each time a gap opens, all have an equal chance of gaining and establishing.
Term
Continental Rise
Definition
Steep drop off after contintental shelf.
Term
Contintental Slope
Definition
Gradual slope at edge of ocean.
Term
Contintental Shelf
Definition
Point where continental slope turns into contintenal rise.
Term
Coriolis Effect
Definition
Currents in the northern hemisphere rotate clockwise, southern: counterclockwise. Caused by earth's rotation.
Term
Disturbance
Definition
A discrete event which removes, damages, or impairs the normal function of organisms.
Term
Doldrums
Definition
Equatorial calms, where wind from north and south come together.
Term
Ekman Spiral
Definition
Water spirals because of coriolis effect.
Term
ENSO
Definition
El Nino southern oscillation. Climate pattern that changes every 5 years, warming of tropical eastern pacific ocean.
Term
Epifauna
Definition
Organisms that live on the ocean floor.
Term
Epiflora
Definition
Ocean floor plant life.
Term
Femtoplankton
Definition
Smallest microplankton.
Term
Gause
Definition
Competitive exclusion principle.
Term
Hadley Cell
Definition
Water evaporates away from the equator, rises, travels to the equator and then precipitates.
Term
Hyposographic Curve
Definition
A graphic representation of the elevation and depth of points on the surface of a planet.
Term
Infauna
Definition
Organisms that live in the ocean floor.
Term
Infiltration
Definition
Process by which water on the ground surface enters the soil.
Term
Intermediate Disturbance Hypothesis
Definition
States that local species diversity is maximized when ecological disturbance is neither too rare nor too frequent.
Term
Light Attenuation Formula
Definition
Attenuation = 10 x log10 (input intensity/output intensity).
Term
Light-independent Reactions
Definition
Calvin cycle.
Term
Light-dependent reactions
Definition
Photosystems.
Term
Lithosphere
Definition
Outermost shell of Earth.
Term
Littoral
Definition
Close to sea/lake/river shore.
Term
Macrofauna
Definition
Animals large enough to be seen by the naked eye.
Term
Meiofauna
Definition
Small benthic invertebrates that live in both marine and fresh water environments.
Term
Nekton
Definition
Swimming aquatic organisms.
Term
Fundamental Niche
Definition
Entire niche an organism could occupy.
Term
Realized Niche
Definition
Niche that is actually occupied.
Term
The Paradox of the Plankton
Definition
The name given to the situation where a limited range of resources (light, nutrients) supports a much wider range of planktonic organisms.
Term
Patchiness
Definition
Organisms aren't evenly distributed.
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