Term
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Definition
most abundant large animals
high impact on environment
require lots of materials and space
devastated environment for many other species |
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Term
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Definition
| study of the interactions between organisms and their environment |
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Term
| the environment-2 components |
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Definition
abiotic-nonliving chemical and physical factors
biotic-living factors |
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Term
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Definition
organismal
population
community
ecosystem |
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Definition
| evolutionary adaptations that enable induv. organisms to meet challanges posed by their abiotic environment |
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Definition
| populations-concentrates mainly on the factors that effect pop. density and growth |
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Definition
| communities-interactions between species affect community structure and organization |
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Definition
| ecosystems-species and abiotic factors-energy flow and the cycling of chemicals among the various abiotic and biotic factors |
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Definition
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Definition
| 1st ecologist to perceive the global dangers of pesticide abuse. helped initiate out current environmental awareness w/ her book- silent spring. catalyzed modern environmental movement. |
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Term
| evolutionary adaptatioins of organisms |
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Definition
physiological
anatomical
behavioral |
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Term
| abiotic factors of bioshphere |
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Definition
| terrestrial and aquatic life |
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Term
| global distribution factors |
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Definition
| reflect regional diff.s in climate and abiotic factors-patchiness-effects animals that live there |
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Term
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Definition
| specific environments in which organisms live |
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Term
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Definition
solar energy powers nearly all ecosystems
availability- effects terrestrial and aquatic environments |
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Term
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Definition
aquatic- water balance
terrestrial- drying out |
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Term
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Definition
| important abiotic factor bcuz of its effect on metabolism |
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Term
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Definition
some org. depends on wind 4 food
some depend on wind 4 seed and pollen dispursal
*can also effect plant growth patterns |
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Term
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Definition
soil varitaion- patchiness-terrestrial
streams & rivers-composition-affect water chemistry |
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Term
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Definition
catastrophic- devestate biological communities
after- area recolonized
structure goes through a succession of changes during the rebound |
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Term
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Definition
temp regulation
acclimation-related 2 the rang of environ. conditions a species naturally experiences |
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Term
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Definition
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Term
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Definition
| org. respond 2 environ. change w/ change in body shape or anatomy |
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Term
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Definition
study of how members of a pop. interact w/ their environ.
factors that influence a pop.'s size, growth rate, density, and structure |
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Term
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Definition
# of induv. of a species per unit of area or volume
we estimate by indirect indicators (ex.birds nests or rodent burrows-prarie dogs) |
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Term
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Definition
clumped
uniform
random
-some mixed |
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Term
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Definition
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Term
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Definition
| change in pop. size per time interval |
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Term
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Definition
| describes growth of an idealized pop. that is slowed by limiting factors |
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Term
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Definition
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Term
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Definition
growing expon. for centuries
birth rate and death rate |
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Term
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Definition
| proportion of induv. in diff. age groups |
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Term
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Definition
| helps predict future pop. growth in diff. countries |
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Term
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Definition
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Term
life history-opportunistic1.
2.
3. |
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Definition
induv. reproduce young
produce many offspring
expon. growing pop. |
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Term
life history-equilibrial
1.
2.
3. |
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Definition
induv.s mature later
fewer offspring but care for young
pop. size quite stable |
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Term
| key properties of communities |
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Definition
diversity
prevalent form of vegetation
stability
trophic structure |
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Term
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Definition
| an assemblage of species living close enough together for potential interaction |
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Term
| key properties of communities |
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Definition
diversity
prevalent form of vegetation
stability
trophic structure |
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Term
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Definition
| the variety of diff. kinds of oganisms that make up the community |
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Term
diversity of a community- 2 components
1.
2. |
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Definition
spesies richness- total # of diff. species in a community
relative abundance of the diff. species |
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