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What is population?
All the individuals ofa species that occupy a particular geographic area at a certain time.
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What is exponential growth?
- Accelerating growth that produces a j-shaped curve when the population is graphed against time.
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What is limiting factors?
A factor that limits the growth, distribution, or amount of population in an ecosystem.
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What is carrying capacity?
- The size of a population that can be supported indefinitely by the available resources and services of an ecosystem.
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What is ecological niche?
- The way in which an organism occupies a position in an ecosystem, including all the necessary biotic and abiotic factors.
- i.e.- ocean, tropical rainsforest, front lawn
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What is a preditor?
- An organism that kills and consumes other organisms.
- i.e.- crocidile, stork, fisheagle
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What is prey?
- An organism that is eaten as food by the predator.
- i.e.- hare, small fish
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What is mutualism?
- A symbiotic relationship between two species in which both species benifit from the relationship.
- i.e.- soft-shell turtle and a crocidile
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What is a parasite?
- An organism whose nicche is dependant on a close association with a larger host organism.
- i.e.- white tailed deer and a brainworm
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What is competition?
- When two or more organisms compete for the same resource, in the same location at the same time.
- i.e.- lizard and a crocidile
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What is sustainable use?
Use that does not lead to long term depleation of a resource or affect the diversity of the ecosystem from which the resource is obtained.
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What is doubling time?
The period of time that is required for a population to double in size
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What is an ecological footprint?
A measure of the impact of an individual or a population on the environment in terms of energy consumption, land use, and waste production.
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What is unsustainable?
A pattern of activity that leads to a decline in the function of an ecosystem.
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What is sustainability?
Use of the Earth's resources, including land and water, at levels that can continue forever.
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What are ecosystem services?
The benifits experienced by organisms, including humans, that are provided by sustainable ecosystems.
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What is desertification?
The change of non-desert land into desert, which may result from climate change or from unsustanable farming or water use.
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What is ecotourism?
A form of tourism that is sensitive to health of an ecosystem and involves recreational activities provided by sustainable ecosystems.
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