Bio Test: Ecology
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20 terms
Terms | Definitions |
|---|---|
 demographics | the study of populations and the types of organisms in those populations |
| population density | the number of organisms in an area |
| exponential population growth | the growth of a population that starts growing slowly but eventually begins growing at a faster rate until it is growing at an extremely high rate |
| linear population growth | the population of an organism increases at a steady rate until it reaches its carrying capacity |
| sine-wave population growth | the population of an organism that is constantly increasing and decreasing as its predator/prey population does the opposite |
| j curve population growth graph | shows exponential growth and is shaped like a j |
| s curve population growth graph | includes both a lag phase and a stabilization phase and represents the growth in a population from a pioneer to climax community |
| Maine's 3 Hibernating Animals | jumping mouse, little brown bat, woodchuck |
| hibernation | physiological adaptation which changes how the body works internally |
| carrying capacity | maximum number of organism in a species that an environment can support |
| benthic zone | area along the ocean floor made up of sand, silt, and dead organisms |
| nekton zone | middle zone in the ocean with little sun light and has fish |
| planktonic zone | highest zone in ocean with lots of penetrating sun light |
| climax community | a stable mature community that results when there is little change in the composition of species |
| pioneer species | species that typically starts succession and grows when many other plants arent able to |
| physiological adaptation | changes how the body works internally (deer metabolism, hibernation, shiver) |
| morphological adaptation | outward body structure (hare and jackrabbit ears) |
| Behavioral Adaptation | and action (animals seeking shade) |
| stabilization phase | this is reached at the point where a population is at its carrying capacity and then stabilizes its population at that capacity |
| lag phase | time in the beginning of population growth during which the population isn't increased |
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