Ecosystems and sustainably

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A Habitat...
is a place where an organisms lives
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A population...
is all of the organisms of one species that live in the same place at the same time, and that can breed together
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A community...
is all the populations of different species that live in the same place at the same time, and can interact with each other
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A trophic level...
is the level at which an organism feed in a food chain.
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Productivity...
is a measure of the rate at which energy passes through each trophic level in a food chain.
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Primary productivity...
is the total amount of energy fixed by photosynthesis. It is the net flux of carbon from the atmosphere to plants, per unit time. It is a rate which may be measured in terms of energy per time unit, such as MJ m-1 yr-2
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Net Primary Production...
is the rate at which carbohydrate accumulates in the tissue of plants of an ecosystem and is measured in dry organic mass. It is the amount of energy avaliable to heterotrophs in the ecosystem.
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Succession...
is a directional change in a community of organisms over time.
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Carrying capacity...
is the maximum population size that can be maintained over a period of time in a particular habitat.
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Limiting factor...
is the factor, in a range of factors, whose magnitude limits the rate of a natural process. It is often the factor shortest supply.
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Competition...
happens when resources are not present in adequate amounts to satisfy the needs of all the individuals who depend on those resources.
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Coppicing...
involves cutting a tree trunk close to the ground to encourage new growth.
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Conservation...
involves the maintenance of biodiversity, including diversity between species, within species and maintenance of habitats and ecosystems
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Other cards in this set

Card 2

Front

is all of the organisms of one species that live in the same place at the same time, and that can breed together

Back

A population...

Card 3

Front

is all the populations of different species that live in the same place at the same time, and can interact with each other

Back

Preview of the back of card 3

Card 4

Front

is the level at which an organism feed in a food chain.

Back

Preview of the back of card 4

Card 5

Front

is a measure of the rate at which energy passes through each trophic level in a food chain.

Back

Preview of the back of card 5
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