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the case where the deer had a much greater opportunity to develop detailed know- ledge of the landscape. Similar patterns have b ...
the arctic island of Svalbard prefer patches of tall vegetation, even though it is nutri- tionally inferior (Van der Wal et al. ...
in the habitat offering the greatest cover, whereas older, invulnerable fish foraged in the open, where energy gain was highest ...
computerized databases. One important feature of GIS is rapid and simple construction of tailor-made “maps” that are readily acc ...
priorities for wildlife conservation in a planning context. There are many variations on this basic statistical design. For deta ...
individuals in a population, no mutant or deviant strategy could do better. Hence, the evolutionarily stable strategy (often ter ...
redistributed themselves in precisely this manner (Milinski 1979). Similar results have been recorded in continuous food input e ...
populations. An example of the effect of interference on carnivore population dynamics is the American marten, a mustelid carniv ...
food supplies. The larger the territory, the greater is the abundance of food. However, we have already seen that there are dimi ...
members of the younger cohort. In other cases, younger individuals in poor habitat forgo breeding altogether, gambling instead o ...
6 Population growth In this chapter we deal with the internal workings of a population that result in a change of population siz ...
It is achieved by expressing the rate of increase, positive or negative, as a geometric rate according to the following equation ...
where N 0 is population size at the beginning of the period of interest and Ntis the population size tunits of time later. The a ...
then determined by two things: on one hand the amount of food available and on the other the intrinsic ability of the species to ...
A population’s rate of increase is determined by its size, by how many animals are born, and by how many die during a year. Henc ...
age-specific survivorship px, is the probability at age xthat an animal will still be alive on its next birthday. Probabilities ...
Approximation methods are also available, based on age structure. If one can age a sample of the living population, or alternati ...
computer programs, such as SURGE(Lebreton et al. 1992) or MARK (White and Burnham 1999). Many of these programs are available fr ...
quadratic or cubic curve to the age distribution, using the values derived from the curve in place of the actual observations, a ...
1 The sample is an unbiased representation of the living age distribution in the first case or of the true frequency of ages at ...
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