(Table 1) Stage of the lemming cycle and nesting parameters of the greater snow geese between 1996-2005, Bylot Island ...

Resource pulses are common in various ecosystems and often have large impacts on ecosystem functioning. Many animals hoard food during resource pulses, yet how this behaviour affects pulse diffusion through trophic levels is poorly known because of a lack of individual-based studies. Our objective w...

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Bibliographic Details
Main Authors: Careau, Vincent, Lecomte, Nicolas, Bêty, Joël, Giroux, Jean-François, Gauthier, Gilles, Berteaux, Dominique
Format: Dataset
Language:English
Published: PANGAEA 2008
Subjects:
ipy
DATE/TIME
Number
Chen caerulescens atlanticus, nests per area
Number of nests
Chen caerulescens atlanticus, egg laying date
Chen caerulescens atlanticus, hatching date
Time coverage
Time in hours
Biology
International Polar Year 2007-2008 IPY
Alopex lagopus
Bylot Island
International Polar Year
IPY
Online Access:https://dx.doi.org/10.1594/pangaea.786411
https://doi.pangaea.de/10.1594/PANGAEA.786411
Description
Summary:Resource pulses are common in various ecosystems and often have large impacts on ecosystem functioning. Many animals hoard food during resource pulses, yet how this behaviour affects pulse diffusion through trophic levels is poorly known because of a lack of individual-based studies. Our objective was to examine how the hoarding behaviour of arctic foxes (Alopex lagopus) preying on a seasonal pulsed resource (goose eggs) was affected by annual and seasonal changes in resource availability. We monitored foraging behaviour of foxes in a greater snow goose (Chen caerulescens atlanticus) colony during 8 nesting seasons that covered 2 lemming cycles. The number of goose eggs taken and cached per hour by foxes declined 6-fold from laying to hatching, while the proportion of eggs cached remained constant. In contrast, the proportion of eggs cached by foxes fluctuated in response to the annual lemming cycle independently of the seasonal pulse of goose eggs. Foxes cached the majority of eggs taken (> 90%) when ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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