Ecology Key words

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Gene
unit of inheritance
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Species
set of organisms that are genetically similar and can successfully reproduce and produce fertile offspring
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Population
group of organisms of same species, living together in same place (& usually time)
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Community
populations of different species in same place (species probably interact)
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Ecosystem
The biological community together with the abiotic environment in which it is set.
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Autotrophs
organisms that create their own food
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Heterotrophs
can only obtain energy by feeding on other organisms
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Primary productivity
rate at which biomass is produced per unit area by primary producers (~ plants)
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Gross primary production (GPP)
total fixation of energy by photosynthesis. A proportion of this lost as respiratory heat (R)
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Net primary production (NPP)
actual rate of production of new biomass available for consumption by heterotrophs, production remaining after redpiration.
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secondary productivity
Rate of production of biomass by heterotrophs
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Catabolism
enzymatic degradation of a compound from a polymer to a monomer (e.g. cellulose to glucose) or to its mineral constituents (glucose to CO2 and H2o)
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Comminution
Physical reduction of a particle size by animal feeding or abiotic factors
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Leaching
physical removal of soluble materials by water. Leaching is influenced by catabolism and comminution
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Card 2

Front

set of organisms that are genetically similar and can successfully reproduce and produce fertile offspring

Back

Species

Card 3

Front

group of organisms of same species, living together in same place (& usually time)

Back

Preview of the back of card 3

Card 4

Front

populations of different species in same place (species probably interact)

Back

Preview of the back of card 4

Card 5

Front

The biological community together with the abiotic environment in which it is set.

Back

Preview of the back of card 5
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