Data from: Moving on with foraging theory: incorporating movement decisions into the functional response of a gregarious shorebird ...

1. Models relating intake rate to food abundance and competitor densities (generalized functional response models) can predict forager distributions and movements between patches, but we lack understanding of how distributions and small-scale movements by the foragers themselves affect intake rates....

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Bibliographic Details
Main Authors: Van Gils, Jan A., Van Der Geest, Matthijs, De Meulenaer, Brecht, Gillis, Hanneke, Piersma, Theunis, Folmer, Eelke O.
Format: Dataset
Language:English
Published: Dryad 2015
Subjects:
continuous-time Markov chain
intake rate
toxic prey
habitat choice
cryptic interference
distribution
Zostera noltii
Calidris canutus
Dosinia isocardia
Holocene
Loripes lucinalis
Red Knot
Online Access:https://dx.doi.org/10.5061/dryad.m9j80
https://datadryad.org/stash/dataset/doi:10.5061/dryad.m9j80
Description
Summary:1. Models relating intake rate to food abundance and competitor densities (generalized functional response models) can predict forager distributions and movements between patches, but we lack understanding of how distributions and small-scale movements by the foragers themselves affect intake rates. 2. Using a state-of-the-art approach based on continuous-time Markov chain dynamics, we add realism to classic functional response models by acknowledging that the chances to encounter food and competitors are influenced by movement decisions, and, vice versa, that movement decisions are influenced by these encounters. 3. We used a multi-state modelling framework to construct a stochastic functional response model in which foragers alternate between three behavioural states: searching, handling and moving. 4. Using behavioural observations on a molluscivore migrant shorebird (red knot, Calidris canutus canutus), at its main wintering area (Banc d'Arguin, Mauritania), we estimated transition rates between foraging ... : intake.rate.protocols.2008This file contains the raw data of the intake rate protocols carried out in 2008knot.positions.2007This file contains the positions of the individual knots mapped in 2007raw.prey.densities.2007This file contains the available densities of Loripes and Dosinia per station in 2007raw.prey.densities.2008This file contains the available densities of Loripes and Dosinia per station in 2008 ...

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