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16 terms

oceanography ch 12

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photosynthesis
the process which uses light energy to synthesize molecules rich stored energy
primary procedures or autotrophs
photosynthetic and chemosynthetic organisms which ones make their own food
trophic pyramid
labeling organisms by their position on a who eats whom feeding hierarchy
physical factor
any aspect of the physical environment that affects living organisms
biological factors
biologically generated aspects of the environment
limiting factors
too much or too little of a single factor can adversely affect the function of an organism
photic zone
uppermost layer of seawater lit by the sun
aphotic zone
the permanently dark layer of seawater beneath the photic zone
eupthotic zone
most of the biological productivity of the ocean occurs in the upper part of the photic zone
disphotic zone
below the euphotic zone
metabolic rate
energy-releasing reactions proceed within the organism, increases with temperature
ectothermic
the majority of the marine organisms are "cold blooded", having internal temperatures that stay very close to that of their surroundings
endothermic
"warm blooded", a few complex animals
pelagic zone
open water
neritic zone
near shore over the continental shelf
oceanic zone
beyond the continental shelf