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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Influence of the density of a sika deer population on activity, habitat use, and group size
TL;DR: Changes in population density had a positive effect on group size in sika deer, though the variation among habitat types supported the hypothesis that food biomass is an important determinant of group size.
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Assessment of space-use patterns in the hispid cotton rat (Sigmodon hispidus)
TL;DR: Space-use patterns of the hispid cotton rat indicated a solitary existence with greater tolerance of individuals of the opposite sex and suggested the existence of a polygynous mating system.
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Habitat selection response of small pelagic fish in different environments. Two examples from the oligotrophic Mediterranean Sea.
Angelo Bonanno,Marianna Giannoulaki,Marco Barra,Gualtiero Basilone,Athanassios Machias,Simona Genovese,S. Goncharov,Sergey V. Popov,Paola Rumolo,Massimiliano Di Bitetto,Salvatore Aronica,Bernardo Patti,Ignazio Fontana,Giovanni Giacalone,Rosalia Ferreri,Giuseppa Buscaino,Stylianos Somarakis,Maria-Myrto Pyrounaki,Stavroula Tsoukali,Salvatore Mazzola +19 more
TL;DR: The common trends in habitat selection of the two species, as observed in the two regions although they present marked differences in hydrodynamics, seem to be driven by the oligotrophic character of the study areas, highlighting the role of areas where the local environmental regimes meet ‘the ocean triad hypothesis’.
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Population trends of common breeding and wintering birds in Hungary, decline of longdistance migrant and farmland birds during 1999–2012
TL;DR: It was pointed out that long distance migrant bird species had strong decreasing trends in Hungary and very probably in the entire Pannonian biogeographical region, whereas the partial and short migrant species has increasing trends.
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Stochastic population growth in spatially heterogeneous environments: The density-dependent case
TL;DR: In this article, the authors studied the dynamics of a structured population that is subject to the combined effects of environmental stochasticity, competition for resources, spatio-temporal heterogeneity and dispersal.
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.