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bio - ecology
| Question | Answer |
|---|---|
| population density | Number of individuals per unit area |
| population distribution | how population is spread out in an area |
| r-selection | density-independent selection, selects for life history traits that maximize reproduction |
| K-selection | density-dependent selection, selects for life history traits that are sensitive to population density |
| exponential growth | growth whose rate becomes ever more rapid in proportion to the growing total number or size. |
| logistical growth | population growth that levels off as population size approaches carrying capacity |
| gross primary productivity | The total amount of solar energy that producers in an ecosystem capture via photosynthesis over a given amount of time |
| net primary productivity | The energy captured by producers in an ecosystem minus the energy producers need |
| species richness | the number of different species in a community |
| species evenness/relative abundance | tells us whether a particular ecosystem is numerically dominated by one species or whether all of its species have similar abundances |
| spatial variation | differences in geography that impact carrying capacity |
| temporal variation | variation over time |
| mutualism | both organisms benefit (+,+) |
| Parasitism | One organism benefits and the other is harmed (+,-) |
| commensalism | one organism benefits and the other is unaffected (+,0) |
| ammensalism | relationship when one organism is harmed, the other is unaffected (-,0) |
Created by:
lreynal