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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ftdans:oai:easy.dans.knaw.nl:easy-dataset:86713 2023-07-02T03:31:32+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 2014-10-07T19:48:35.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-ge-u5f2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86713 unknown doi:10.5061/dryad.71ds5/1 doi:10.5061/dryad.71ds5/2 doi:10.5061/dryad.71ds5/3 doi:10.1002/ece3.1213 PMID:25505527 http://nbn-resolving.org/urn:nbn:nl:ui:13-ge-u5f2 doi:10.5061/dryad.71ds5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86713 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2014 ftdans https://doi.org/10.5061/dryad.71ds5/110.5061/dryad.71ds5/210.5061/dryad.71ds5/310.1002/ece3.121310.5061/dryad.71ds5 2023-06-13T13:14:31Z 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. Other/Unknown Material Arctic Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Life sciences medicine and health care |
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Life sciences medicine and health care 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 |
Life sciences medicine and health care |
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. |
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 |
http://nbn-resolving.org/urn:nbn:nl:ui:13-ge-u5f2 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86713 |
geographic |
Arctic |
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Arctic |
genre |
Arctic |
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Arctic |
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doi:10.5061/dryad.71ds5/1 doi:10.5061/dryad.71ds5/2 doi:10.5061/dryad.71ds5/3 doi:10.1002/ece3.1213 PMID:25505527 http://nbn-resolving.org/urn:nbn:nl:ui:13-ge-u5f2 doi:10.5061/dryad.71ds5 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:86713 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.71ds5/110.5061/dryad.71ds5/210.5061/dryad.71ds5/310.1002/ece3.121310.5061/dryad.71ds5 |
_version_ |
1770270900967440384 |