Mixed-species foraging groups
نویسندگان
چکیده
منابع مشابه
Optimal Foraging in Groups
A common assumption of optimal foraging theory is that natural selection has favoured animals that forage in an optimal way, as such an ability increases the individual’s probabillity of survival [4, 5]. This argument is used to support optimality principles in biology, and is at the base of optimal foraging theory [6]. Efficient foraging is clearly beneficial when food is in short supply, but ...
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Understanding how individual behaviour influences the spatial and temporal distribution of other species is necessary to resolve the complex structure of species assemblages. Mixed-species bird flocks provide an ideal opportunity to investigate this issue, because members of the flocks are involved in a variety of behavioural interactions between species. Willow tits (Poecile montanus) often pr...
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http://dx.doi.org/10.1016/j.anbehav.2014.08.012 0003-3472/© 2014 The Association for the Study of A For many animals, a key benefit of group living is lowered predation risk. With increasing group size, individuals commonly reduce vigilance. This group size effect can arise from both dilution of risk and increased collective detection. To determine which was more important, we compared vigilanc...
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We define generalized Milnor K-groups known as mixed K-groups and give explicit descriptions of these groups in simple cases. Our main result is a generalization of the theorem of Bass and Tate that the Milnor K-groups KM n (k) are uniquely divisible when k is algebraically closed and n ≥ 2.
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ژورنال
عنوان ژورنال: Nature
سال: 1981
ISSN: 0028-0836,1476-4687
DOI: 10.1038/292408a0