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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Arrival Timing and Seasonal Reproductive Performance in a Long-Distance Migratory Landbird
TL;DR: Relationships between arrival timing and seasonal reproductive performance in the American redstart, a long-distance passerine migrant, arriving at northerly breeding grounds in Michigan’s eastern Upper Peninsula are described.
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How does fishing alter marine populations and ecosystems sensitivity to climate
Benjamin Planque,Jean-Marc Fromentin,Philippe Cury,Kenneth F. Drinkwater,Simon Jennings,Simon Jennings,R. Ian Perry,Souad Kifani +7 more
TL;DR: In this paper, the authors review how exploitation, by altering the structure of populations and ecosystems, can modify their ability to respond to climate and show that demographic effects of fishing (removal of large-old individuals) can have substantial consequences on the capacity of populations to buffer climate variability through various pathways (direct demographic effects, effects on migration, parental effects).
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Alternative food, switching predators, and the persistence of predator-prey systems.
TL;DR: A model based on the simplifying assumption that the alternative food source has a fixed density found that equilibria will not be stable at all, and even if switching to alternative food does not stabilize the equilibrium, it may prevent unbounded oscillations and thus promote persistence.
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Social organization and foraging in emballonurid bats
TL;DR: In this paper, the authors present a graphical model for the simultaneous comparison of group size and territory size in organisms with exclusive but contiguous territories, and apply it to five species of emballonurid bats with particular emphasis on identifying the factors which set maximal limits on group size.
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Connecting theoretical and empirical studies of trait‐mediated interactions
TL;DR: In this article, the authors review and synthesize the theoretical literature on TMIs and, in particular, on trait-mediated indirect interactions, in which the presence of one species mediates the interaction between a second and third species.
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.