Term
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Definition
| the number of individuals per unit area or per unit volume |
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Term
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Definition
| offspring are produced in one burst rather than in a repeated manner |
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Term
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Definition
| a population genetic unit of individuals that breed with one another; a genetic population |
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Term
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Definition
| the movement of individuals our of an area occupied by the population, typically the area of birth or hatching |
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Term
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Definition
| the movement of individuals into an area occupied by a population |
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Term
| intrinsic capacity for increase |
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Definition
| the potential rate of increase of a population that combines the life table and fertility schedule with the speed of development |
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Term
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Definition
| the age-specific mortality schedule of a population |
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Term
| mean length of a generation |
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Definition
| the average length of time betweeen the birth of a female and her offspring |
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Term
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Definition
| the average number of offspiring produced per female or reproductive unit |
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Term
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Definition
| the contribution an individual female will make to the future population |
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Term
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Definition
| a group of organisms of the same species occupying a particular space at a particular time |
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Term
| 3 ways to asses a population |
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Definition
1. total population count: the gold standard
2. sampling methods: mark and recapture, can be accurate but messy with low number of recaptures - quadrat sampling in plants and smaller animals
3. relative density: indexes- be careful, not qunatitative numbers (approximate)- not useful |
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Term
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Definition
marked animals marked animals
second sample (r) in first sample (a)
------------------- = -----------------
total count in total population (p)
second sample (n) |
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Term
| assumptions of mark/recapture |
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Definition
no emmigration or immigration
no natality or mortality
marks not lost during sampling
marked/unmarked captured randomly |
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Term
| inidces of relative density |
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Definition
traps number of artifact
pellets questionairres
vocalizations cover
pelts feeding capacity
catch per unit effort roadside counts |
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Term
| primary characteristics of of population density |
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Definition
immigration
emigration
natality
mortality |
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Term
secondary characteristics
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Definition
age compostition
sex ratio
genetic structure |
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Term
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Definition
| maximum length of a life in a species |
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Term
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Definition
the average longevity in a population
(shortest) |
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Term
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Definition
| observed birth to death of a group |
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Term
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Definition
| cross section (age) of a population |
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Term
| unlimited population growth |
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Definition
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Term
| intrinsic rate of increase |
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Definition
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Term
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Definition
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Term
—Age specific reproduction—measure as the number of
female offspring per female |
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Definition
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Term
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Definition
Reduce the age at first reproduction
Increase the number of offspring
Increase longevity |
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