Term
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Definition
| the organisms of a particular habitat, together with the physical environment in which they live |
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Term
| global ecosystem compartments |
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Definition
| atmosphere, oceans, land, fresh waters |
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Term
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Definition
thin layer of gases surrounding the earth
78% nitrogen
21% oxygen
1% water vapor
1% argon
0.03% carbon dioxide |
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Term
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Definition
| lowest layer of the atmosphere |
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Term
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Definition
highest layer of the atmosphere
-contains the ozone |
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Term
| 50km above the earths surface |
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Definition
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Term
| 10-17km above the earths surface |
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Definition
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Term
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Definition
| highly productive areas near coasts of continents where nutrients from the ocean floor rise to the surface |
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Term
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Definition
| receive materials from other compartments of the global ecosystem, primarily via runoff from rivers |
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Term
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Definition
| can be found in lakes, streams, groundwater, and icecaps |
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Term
| water flows rapidly through |
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Definition
| lakes and streams into the ocean |
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Term
| water flows much more slowly through |
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Definition
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Term
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Definition
vertical movements of water that bring nutrients and dissolved CO2 to the surface, and oxygen to deeper water
-happens twice per year |
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Term
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Definition
| transition layer between the mixed water at the surface and the deep water layer |
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Term
| major times when turnovers happen |
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Definition
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Term
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Definition
| covers about 1/4 of the earths surface |
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Term
| weathering and erosion connect land to |
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Definition
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Term
| each element cycles through the four compartments of the |
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Definition
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Term
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Definition
| water, carbon, nitrogen, phosphorous |
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Term
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Definition
| food, clean water, clean air, building materials, and fuel |
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Term
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Definition
| flood control, soil stabilization, pollination, and climatic regulation |
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Term
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Definition
| an applied scientific discipline devoted to protecting and managing earths biodiversity |
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Term
| human activities have affected all |
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Definition
| ecosystems and biogeochemical cycles |
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Term
| conservation biologists are interested in |
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Definition
| preserving nature for its intrinsic value as well as for economic benefits |
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Term
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Definition
evolution is the process that unites all of biology
the ecological world is always changing
humans are part of ecosystems, so human activities must be incorporated into goals and practices |
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Term
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Definition
degree of genetic variation within a species, which allows populations to adapt to changing environments
-species richness in a given community
-ecosystems diversity; the complex interaction within and
between ecosystems |
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Term
| conservation biologists use the value of biodiversity for the |
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Definition
| human society to help protect it |
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Term
| opportunities to study and understand species interactions are lost |
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Definition
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Term
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Definition
| biodiversity is being lost at an alarming rate |
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Term
| incomplete knowledge of biodiversity |
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Definition
we don't know how many species exist
we don't know where many species live
extinction is difficult to know for certain
we rarely know how species are connected |
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Term
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Definition
| pristine habitats become polluted |
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Term
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Definition
| habitats are outright destroyed |
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Term
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Definition
| patches of suitable habitat become smaller and more isolated |
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Term
| many species are threatened or endangered because of |
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Definition
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Term
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Definition
| gases that trap in radiation in the earths atmosphere |
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Term
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Definition
| species that have been deliberately or inadvertently introduced to new areas often have negative impacts on those ecosystems |
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Term
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Definition
| areas where habitat alteration and exploitation are banned or restricted |
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Term
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Definition
| areas with unusual species richness and endemism |
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Term
| the future of biodiversity |
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Definition
| will be affected by policy decisions made today |
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Term
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Definition
| environmentally responsible to travel to natural areas that contributes to conserving their biodiversity |
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Term
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Definition
| the future of biosphere will be affected by policy decisions made today |
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