Term
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Definition
| the number of new individuals is proportional to the size of the population |
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Term
| logarithmic (or logistic) growth |
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Definition
| the leveling-off of a population in response to environmental resistance |
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Term
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Definition
| method to help estimate size of population |
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Term
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Definition
| number of individuals of a species per unit area or volume of habitat |
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Term
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Definition
| estimated number of total species |
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Term
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Definition
| any factor that limits the population of a species |
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Term
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Definition
| maximum number of individuals that the habitat can support indefinitely |
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Term
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Definition
| movement of individuals into a population |
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Term
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Definition
| movement of individuals out of a population |
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Term
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Definition
| members of the same species occupying a region |
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Term
| proportions of marked animals were not changed, chances of being caught are equal, enough time between marking period and recapture, animals not affected by their marks, animals do not lose their marks |
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Definition
| assumptions of mark-recapture method |
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Term
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Definition
| exponential growth formula |
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Term
| number of individuals added per unit time |
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Definition
| what is G of G=rN formula |
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Term
| rate of increase for species |
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Definition
| what is r of G=rN formula |
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Term
| starting number of individuals |
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Definition
| what is N of G=rN formula |
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Term
| no pattern, uniform, clumped |
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Definition
| three patterns of dispersion |
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Term
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Definition
| pattern of dispersion with steady resources, habitat conditions nearly uniform, individuals neither attract nor avoid each other |
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Term
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Definition
| pattern of dispersion that is unevenly spaced, typically a result of social or other interactions |
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Term
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Definition
| pattern of dispersion with resource distribution, most popular pattern |
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Term
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Definition
| what does exponential growth look like |
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Term
| S-curve or leveling-off after rapid growth |
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Definition
| what does logistic (or logarithmic) growth look like |
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Term
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Definition
| related to population density; individuals in a dense population will be affected differently by water availability |
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Term
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Definition
| not related to population density; i.e. a volcanic eruption will kill an entire population regardless of how dense it is |
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Term
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Definition
| survivorship curve in which there are few offspring, parental care, and high chance of survivorship (humans) |
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Term
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Definition
| survivorship curve in which there is equal chance for life/death throughout the life of the organism (birds) |
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Term
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Definition
| survivorship curve in which there is a high number of offspring, and rapid death rate (flies) |
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Term
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Definition
| in which phase of demographic transition do death rates and birth rates become high and roughly in balance (pre-industrial society) |
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Term
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Definition
| in which phase of demographic transition do the death rates drop rapidly due to improvements in food supply and sanitation, which increase life spans and reduce disease(developing country) |
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Term
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Definition
| in which phase of demographic transition do birth rates fall due to access to contraception, increases in wages, urbanization, a reduction in subsistence agriculture, etc. |
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Term
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Definition
| in which phase of demographic transition are there both low birth rates and low death rates |
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