Time and energy constraints: Reply to Nolet and Klaassen (2005)

Article Abstract:

A reply to Nolet and Klaassen, who provided evidence that Bewick's swans are time limited during migration when food abundance is low and suggested that animals are not always energy-processing limited but can be time limited during demanding phases of the year, is presented. The claim of Nolet and Klaassen that they are surprised at their finding, because of the common notion that animals in the field are generally energy processing limited, is corrected in order to avoid future confusion.

Germany, Behavior, Food and nutrition, Animal migration, Swans

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Bayesian foraging with only two patch types

Article Abstract:

The optimal Bayesian foreign strategy in environments is with only two patch qualities where patches either belong to one rich type or to one poor type, as this situation is created in several foraging experiments. The predictions given by the model may provide a much needed and effective conceptual framework for testing, whether animals (both in the lab and the field) whether animals are using Bayesian assessment.

United States, Bayesian statistical decision theory, Bayesian analysis

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The shape of things eaten: The functional response of herbivores foraging adaptively

Article Abstract:

Resource density is integrated into an optimal foraging model to vary in a linear or saturating manner with resource density. The modeling effort produces novel set of functional responses that display unique combinations of traditional functional response shapes using field estimates to parameterize the model for 11 herbivore mammals and four herbivore Orthoptera.

Herbivores, Orthoptera, Orthopterans

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