Ecology Chapter 3
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The variety of life in the world or in a particular habitat or ecosystem.
Aim to preserve (a threatened plant or animal species) by legislating against collecting or hunting.
E.g. Moose are not allowed to be hunted in New York because their numbers are scarce.
A biogeographic region with a significant reservoir of biodiversity
All of the populations of the different species that interact in a specific ecosystem
A species that is so abundant that is has the biggest biomass of any community member
A species that can greatly affect population numbers and the health of an ecosystem.
e.g. Beavers, bees, sea otter, grizzly bear
The process of breeding animals in human controlled environments
E.g. since the 1970s the Matschie's tree-kangaroo, an endangered species, has been bred in captivity
Any organism that creates or modifies habitats
The series of changes in ecosystems that occurs over time following a disturbance.
The destruction of habitats, which usually which usually results from human activity
the practice of clearing forests for logging or other human uses and never replanting them.
a species that is accidentally or deliberately introduced to a new location usually a result of human activity
E.g. zebra mussels
A species that can take over the habitat of native species or invade their bodies
Eg. Feral hogs in New York
the used or extraction of a resource until it is depleted
E.g. The hunting of dodo birds
the death of all the individuals of a species
E.g. passenger pigeons
the current accelerated rate of extinction on earth
the renewal of degraded or destroyed ecosystems through active human intervention
the regrowth of a forest either through planting of seeds or trees in an area where a forest was cut down
the use of a species to control the population growth or spread of an undesirable species
the use of living organisms to clean up contaminated areas naturally
the use of organisms to add essential nutrients to depleted soils
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