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| Complete count of individuals in a population. May be counted from aircraft, yet in areas where vegetation or topography conceals animals it is rare to get a complete count. |
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| May be made on the basis of a statistical sample, can be done by counting inanimate objects (e.g. droppings, nets, and dens) or by counting animals. Sample taken on a plot. |
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| A quantitative measure of a population. Compares relative abundance between areas or changes in abundance from one time to another in the same area. |
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1. Determines migratory routes and other information of movements of birds.
2. Banding helps learn more about life history of a species. Determines philopatry.
3. Data from recovered bands serves as a major tool in the analysis of bird population factors. Only a small number of bands are actually recovered. |
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| Population dynamics, why do things work the way they do? |
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| Various types of information necessary to construct an accurate model, what are the parameters? |
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| The model may be useful in predicting future courses, What do I want out of it? |
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| These populations respond to the carrying capacity before food becomes limiting. K-type Species |
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| These populations are largely unpredictable. Found in diverse species that range from the Equator to the Boreal Forest. Eruptions usually associated with weather or vegetational changes. |
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| Found in simple ecosystems, occur on all continents that have tundra. R-selected species |
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| A recurring variation of regular timing or phasing and of constant amplitude. |
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| Fluctuations where the phase is constant but the amplitude varies. |
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| Variations of both phase and amplitude. |
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| Usually found in the Boreal Forest. Key word: Boreal Forest. |
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