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BIO 140 test 3 ch 8
| Question | Answer |
|---|---|
| biological diversity | total sum of all organisms in an area |
| species | organisms sharing same traits and can naturally breed |
| species diversity | number of species in an area |
| species richness | number of different species |
| evenness | relative abundance-# of individuals of different species are equal |
| taxonomy | classification of organisms |
| species name | scientific name |
| subspecies | populations of a species that occur in different areas and differ from one another in some characteristics |
| genetic diversity | differences in DNA composition among individuals within a species and populations,depressed=inbreeding/disease |
| ecosystem diversity | number and variety of ecosystems |
| biodiversity distribution | is unevenly distributed because of climate and temperature changes, latitude and longitudinal differences, man has an effect on this as well |
| extinction | permanent elimination of a species, ceases to exist, natural process |
| extirpation | species no longer living in a particular area(localized extinction) |
| biodiversity loss | decline in population sizes of many organisms |
| population decline | used to determine biodiversity |
| habitat alteration | extreme change of species address |
| invasive species | takes over/non-native/out competes others |
| pollution | substance harms organisms |
| overharvesting | collect too much faster than it replenishes |
| climate changes | modification of weather patterns |
| biodiversity services | provides food, fuel, fiber |
| biodiversity services | provides shelter, building materials |
| biodiversity services | purifies air and water |
| conservation biology | scientific discipline devoted to understanding the factors, forces, and processes that influence loss, protection and restoration of biological diversity |
| island biogeography theory | (distance effect)species will colonize area closest |
| island biogeography theory | (target size) they will colonize larger than smaller areas because there are more resources |
| island biogeography theory | (differential extinction) proportionately fewer species go extinct on larger islands |
| Endangered Species Act | primary legislation for protecting biodiversity in the U.S. |
| Endangered Species Act | prohibits illegal trade |
| Endangered Species Act | recovery plan of species |
| Endangered Species Act | reduce/prevent habitat alteration |
| Endangered Species Act | list species |
| endangered species | in danger of becoming extinct |
| threatened species | one notch less than endangered/number is decreasing/ability to become endangered |
| captive breeding | individuals are bred and raised in controlled conditions with the intent of reintroduction into the wild |
| umbrella species | require a lot of land for their habitat/by protecting one species, you also protect others |
| biodiversity hotspots | priority spot/an area that supports an especially great number of species |
| endemic | found nowhere else in the world |
| community-based conservation | local people help protect land and wildlife |
| enforce Endangered Species Act | U.S. Fish and Wildlife Service |
| enforce Endangered Species Act | National Marine Fisheries Service |
Created by:
kerinv
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