Sustainable Ecosystems Chapter 2
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What is population?
All the individuals ofa species that occupy a particular geographic area at a certain time.
What is exponential growth?
- Accelerating growth that produces a j-shaped curve when the population is graphed against time.
What is limiting factors?
A factor that limits the growth, distribution, or amount of population in an ecosystem.
What is carrying capacity?
- The size of a population that can be supported indefinitely by the available resources and services of an ecosystem.
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
What is a preditor?
- An organism that kills and consumes other organisms.
- i.e.- crocidile, stork, fisheagle
What is prey?
- An organism that is eaten as food by the predator.
- i.e.- hare, small fish
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
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
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
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.
What is doubling time?
The period of time that is required for a population to double in size
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.
What is unsustainable?
A pattern of activity that leads to a decline in the function of an ecosystem.
What is sustainability?
Use of the Earth's resources, including land and water, at levels that can continue forever.
What are ecosystem services?
The benifits experienced by organisms, including humans, that are provided by sustainable ecosystems.
What is desertification?
The change of non-desert land into desert, which may result from climate change or from unsustanable farming or water use.
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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