Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning
Sexual size dimorphism (SSD) implies correlated differences in energetic requirements and feeding opportunities, such that sexes will face different trade-offs in habitat selection. In seasonal migrants, this could result in a differential spatial distribution across the wintering range. To identify...
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ftzenodo:oai:zenodo.org:4979639 2023-06-06T11:51:27+02:00 Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning Duijns, Sjoerd van Gils, Jan A. Spaans, Bernard ten Horn, Job Brugge, Maarten Piersma, Theunis 2014-10-07 https://zenodo.org/record/4979639 https://doi.org/10.5061/dryad.71ds5 unknown doi:10.1002/ece3.1213 https://zenodo.org/communities/dryad https://zenodo.org/record/4979639 https://doi.org/10.5061/dryad.71ds5 oai:zenodo.org:4979639 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Limosa lapponica bar-tailed godwit Resource partitioning Bergmann's rule info:eu-repo/semantics/other dataset 2014 ftzenodo https://doi.org/10.5061/dryad.71ds510.1002/ece3.1213 2023-04-13T22:11:21Z Sexual size dimorphism (SSD) implies correlated differences in energetic requirements and feeding opportunities, such that sexes will face different trade-offs in habitat selection. In seasonal migrants, this could result in a differential spatial distribution across the wintering range. To identify the ecological causes of sexual spatial segregation, we studied a sexually dimorphic shorebird, the bar-tailed godwit Limosa lapponica, in which females have a larger body and a longer bill than males. With respect to the trade-offs that these migratory shorebirds experience in their choice of wintering area, northern and colder wintering sites have the benefit of being closer to the Arctic breeding grounds. According to Bergmann's rule, the larger females should incur lower energetic costs per unit of body mass over males, helping them to winter in the cold. However, as the sexes have rather different bill lengths, differences in sex-specific wintering sites could also be due to the vertical distribution of their buried prey, that is, resource partitioning. Here, in a comparison between six main intertidal wintering areas across the entire winter range of the lapponica subspecies in northwest Europe, we show that the percentage of females between sites was not correlated with the cost of wintering, but was positively correlated with the biomass in the bottom layer and negatively with the biomass in the top layer. We conclude that resource partitioning, rather than relative expenditure advantages, best explains the differential spatial distribution of male and female bar-tailed godwits across northwest Europe. datafile 1Basic datafile, with counts per sex and area, including the summary of benthic biomassdatafile 2Datafile of the abdominal profile scores of male and female bar-tailed godwits per area. The costs of wintering are also includeddatafile 3Summary of calculated costs of wintering and flying to and from their different wintering sites, separated per sex Dataset Arctic Zenodo Arctic |
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Limosa lapponica bar-tailed godwit Resource partitioning Bergmann's rule |
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Limosa lapponica bar-tailed godwit Resource partitioning Bergmann's rule Duijns, Sjoerd van Gils, Jan A. Spaans, Bernard ten Horn, Job Brugge, Maarten Piersma, Theunis Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
topic_facet |
Limosa lapponica bar-tailed godwit Resource partitioning Bergmann's rule |
description |
Sexual size dimorphism (SSD) implies correlated differences in energetic requirements and feeding opportunities, such that sexes will face different trade-offs in habitat selection. In seasonal migrants, this could result in a differential spatial distribution across the wintering range. To identify the ecological causes of sexual spatial segregation, we studied a sexually dimorphic shorebird, the bar-tailed godwit Limosa lapponica, in which females have a larger body and a longer bill than males. With respect to the trade-offs that these migratory shorebirds experience in their choice of wintering area, northern and colder wintering sites have the benefit of being closer to the Arctic breeding grounds. According to Bergmann's rule, the larger females should incur lower energetic costs per unit of body mass over males, helping them to winter in the cold. However, as the sexes have rather different bill lengths, differences in sex-specific wintering sites could also be due to the vertical distribution of their buried prey, that is, resource partitioning. Here, in a comparison between six main intertidal wintering areas across the entire winter range of the lapponica subspecies in northwest Europe, we show that the percentage of females between sites was not correlated with the cost of wintering, but was positively correlated with the biomass in the bottom layer and negatively with the biomass in the top layer. We conclude that resource partitioning, rather than relative expenditure advantages, best explains the differential spatial distribution of male and female bar-tailed godwits across northwest Europe. datafile 1Basic datafile, with counts per sex and area, including the summary of benthic biomassdatafile 2Datafile of the abdominal profile scores of male and female bar-tailed godwits per area. The costs of wintering are also includeddatafile 3Summary of calculated costs of wintering and flying to and from their different wintering sites, separated per sex |
format |
Dataset |
author |
Duijns, Sjoerd van Gils, Jan A. Spaans, Bernard ten Horn, Job Brugge, Maarten Piersma, Theunis |
author_facet |
Duijns, Sjoerd van Gils, Jan A. Spaans, Bernard ten Horn, Job Brugge, Maarten Piersma, Theunis |
author_sort |
Duijns, Sjoerd |
title |
Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
title_short |
Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
title_full |
Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
title_fullStr |
Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
title_full_unstemmed |
Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
title_sort |
data from: sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning |
publishDate |
2014 |
url |
https://zenodo.org/record/4979639 https://doi.org/10.5061/dryad.71ds5 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
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doi:10.1002/ece3.1213 https://zenodo.org/communities/dryad https://zenodo.org/record/4979639 https://doi.org/10.5061/dryad.71ds5 oai:zenodo.org:4979639 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.71ds510.1002/ece3.1213 |
_version_ |
1767957159178403840 |