On territorial behavior and other factors influencing habitat distribution in birds
TLDR
In this article, the Dickcissel sex ratio is employed as an indirect index of suitability and a sex ratio index was found to be correlated positively with density, consistent with the hypothesis that territorial behavior in males of this species limits their density.Abstract:
This example is provided so that non-theorists may see actual applications of the theory previously described. The Dickcissel sex ratio is employed as an indirect index of suitability. A sex ratio index was found to be correlated positively with density. This is consistent with the hypothesis that territorial behavior in the males of this species limits their density. This study provides a valid example of how the problem can be approached and offers a first step in the eventual identification of the role of territorial behavior in the habitat distribution of a common species.read more
Citations
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Ghosts of habitats past: contribution of landscape change to current habitats used by shrubland birds
TL;DR: In this article, the authors used data from field surveys and satellite image analyses in a series of redundancy analyses to partition variances and to determine the relative contribution of habitat change and current landscapes.
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Population Dynamic and Genetic Consequences of Spatial Density‐Dependent Dispersal in Patchy Populations
Jon Aars,Rolf A. Ims +1 more
TL;DR: This study highlights the importance of incorporating sex‐specific dispersal strategies in population genetic models and predicts that sex‐biased dispersal may act as a deterministic force counteracting the tendency for stochastic loss of alleles in small and fragmented populations.
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Trade-offs in the vertical distribution of zooplankton: ideal free distribution with costs?
TL;DR: This work hypothesizes that zooplankton distribute themselves vertically in the water column according to an ideal free distribution (IFD) with costs such as to optimize their fitness and results are consistent with the concept of IFD with costs originally developed for stream fishes.
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Ideal free settlement of California's Northern Channel Islands
TL;DR: In this paper, a Bayesian model fitted with the Gibbs sampler is used to reconstruct the Native assessment of habitat that appears to underlie the settlement process on the Northern Channel Islands of southern California.
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Fish Recognize and Prefer to Shoal with Poor Competitors
TL;DR: It is shown for the first time that fish (European minnows) can discriminate between shoals composed of good and of poor competitors, which may explain the paradox of animals rapidly distribution themselves between foraging groups according to the predictions of the Ideal Free Distribution.
References
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Principles and Procedures of Statistics.
Book
Animal dispersion in relation to social behaviour
TL;DR: Wynne-Edwards has written this interesting and important book as a sequel to his earlier (1962) Animal Dispersion in Relation to Social Behaviour, and reviewing it has proven to be a valuable task for one who normally is only at the periphery of the group selection controversy.