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32 Cards in this Set
- Front
- Back
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Innate behaviors |
genetically hardwired(goose example) |
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Learned behavoirs |
Picked up as we go |
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monogamous |
one partner for life |
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emergent property |
when individuals interact in populations |
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population |
all members of a species that inhabit the same area at the same time |
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Geographic range |
the area it inhabits |
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dispersal |
movement of individuals |
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Dispersion |
distribution of individulas wihin the population |
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Random dispersion |
nothing in particular limits distribution, no pattern |
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Regular(uniform, ordered, spaced) |
mostly occurs due to biotic intereactions |
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Clumped |
clusters from around resources, as part of social behavior, and/or due to low reproductive dispersal |
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metapopulation |
a population that is divided in to subpopulations |
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Logistic growth |
J shaped becomes S shaped |
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logistic equation |
r=rmax(1-n/k) |
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r ____ as N approaches K |
decreases |
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Age structure diagrams( population pyramids) |
age distribution, provides a snapshot that reveals insights into its demographics |
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productivity |
rate at which biomass is generated |
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complexity |
number and nature of connections b/w players in the community |
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biodiversity |
variety of species present |
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stability |
tendency to resist change over time |
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keystone consumer |
exhibits a disproportionate influence on community structure |
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trophic level |
an individuals feeding position in an ecosystem, Have to be in food web |
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Ecological succession |
ecosystems change over time in a generally predictable manner due to biological activity |
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Climax communtiy |
the endpoint of succession, the "final", "mature" community |
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Biodiversity tends to _____ with temperature and humidity |
increase |
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biodiversity ____ away from the equator |
decreases |
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speciation, immigration= |
biodiversity gains |
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Extinction, emigration= |
biodiversity losses |
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why are amphibians disappearing? |
habit destruction/fragmentation, pollution, and diseases. |
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Indicator species |
particularly sensitive to environmental perturbation= early warning system |
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bioaccumulation |
accumulation of molecules(including toxins) in cells, tissues |
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Biomagnification |
Concentrations increase through the food web |
