Term
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Definition
| # of individuals after a set time |
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Term
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Definition
| pop. growth rate no emigration or immigration |
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Term
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Definition
| geometric growth over one time interval |
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Term
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Definition
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Term
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Definition
| exponential growth (again) |
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Term
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Definition
| instantaneous rate of change |
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Term
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Definition
| equal growth rate of each age class in a population |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| follows the fate of a group of individuals born at the same time from birth to death of the last individual |
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Term
| Type l survivorship curve |
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Definition
| high initial survival rate that falls off abruptly with age |
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Term
| type 2 survivorship curve |
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Definition
| constant survival rate with age |
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Term
| type 3 survivorship curve |
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Definition
| low initial survival rate that falls off abruptly with age |
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Term
| intrinsic rate of increase |
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Definition
| the geometric or exponential growth assumed by a population with a stable age distribution |
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Term
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Definition
| the number of female offspring produced by an average female during her lifetime |
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Term
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Definition
| the average period between the birth of an individual and the birth of its offspring |
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Term
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Definition
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Term
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Definition
| the population grows slowly at first, then more rapidly, and finally more slowly as it approaches K |
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Term
| Positive or inverse density dependence |
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Definition
| population growth rates increase with increasing pop. densities |
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Term
| Positive or inverse density dependence |
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Definition
| population growth rates increase with increasing pop. densities |
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Term
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Definition
| individuals are better able to find mates as pop. density increases and large pops. may have greater genetic diversity |
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Term
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Definition
| number of new offspring per individual breeder that join the breeding pop. in the future |
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Term
| Self-thinning curve or -3/2 power law |
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Definition
| relationship between average plant weight and density |
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Term
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Definition
| occur as result of the responses of birth and death rates due to environmental changes |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Metapopulation assumptions |
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Definition
-All patches are equal
-Rates of extinction and colonization for each patch are the same
-Each patch contributes equally to dispersal
-Colonization and extinction in each patch occur independently of other patches
-The colonization rate is proportional to the fraction of occupied patches |
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Term
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Definition
| involves metapopulation dynamics where the risk of extinction of subpopulations is reduced by immigration from nearby subpopulations |
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Term
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Definition
| colonize disturbed habitats, rapid growth, early maturation, high reproductive rates, easily dispersed seeds |
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Term
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Definition
| found in predictable environment, grow large, mature at large size, long life span |
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Term
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Definition
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Term
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Definition
| life history characterized by multiple reproductive episodes |
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Term
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Definition
| spreading reproduction over good and bad years |
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Term
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Definition
| resting state of some insects |
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Term
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Definition
| such as day length by which an organism can assess the state of the environment, do not directly affect its fitness |
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Term
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Definition
| such as food supplies that bear directly on the fitness of the organism |
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