Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore
Obligate herbivores dominate studies of the effects of climate change on mammals, however there is limited empirical evidence for how changes in the abundance or quality of plant food affect mammalian omnivores. Omnivores can exploit a range of different food resources over the course of a year, but...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:97535 2023-07-02T03:33:55+02:00 Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas 2017-05-23T05:09:31.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-j9-z1gn https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97535 unknown doi:10.5061/dryad.772g3/1 doi:10.5061/dryad.772g3/2 doi:10.5061/dryad.772g3/3 doi:10.5061/dryad.772g3/4 doi:10.1111/oik.04515 http://nbn-resolving.org/urn:nbn:nl:ui:13-j9-z1gn doi:10.5061/dryad.772g3 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97535 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 2017 ftdans https://doi.org/10.5061/dryad.772g3/110.5061/dryad.772g3/210.5061/dryad.772g3/310.5061/dryad.772g3/410.1111/oik.0451510.5061/dryad.772g3 2023-06-13T12:40:31Z Obligate herbivores dominate studies of the effects of climate change on mammals, however there is limited empirical evidence for how changes in the abundance or quality of plant food affect mammalian omnivores. Omnivores can exploit a range of different food resources over the course of a year, but they often rely on seasonally restricted highly nutritious fruiting bodies during critical life stages. Brown bears Ursus arctos in Sweden are dependent on berries for fattening before entering hibernation. We used a ten-year time series to evaluate the effect of temperature and snow on annual variation in berry abundance and how this variation affected bears. We found marked interannual variation in berry production of bilberry Vaccinium myrtillus and lingonberry V. vitis-idaea, that we could attribute in part to temperature during plant dormancy and flowering and precipitation during fruit ripening. Both, autumn weights of female bears and spring weights of yearling bears increased linearly with bilberry abundance. When bilberry abundance was low, lightweight female bears had a lower reproductive success than females in better condition. This effect vanished when food abundance was above average, indicating that lightweight females could compensate for their initial weight during good bilberry years. Our study highlights the importance of considering individuals’ dynamic responses to variation in food availability, which leave some more vulnerable to food shortage than others. Individual life-history heterogeneity in response to resource variation likely affects long-term population recruitment. Our findings emphasize that Scandinavian bears can be dependent on a single food resource during a critical period of the year and are therefore less resilient to environmental change than expected for an omnivore. Future climate scenarios predict ambiguous trends for weather covariates that affected crucial stages of berry phenology, preventing a clear prognosis of how climate change may affect long-term bilberry ... Other/Unknown Material Ursus arctos Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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unknown |
topic |
Life sciences medicine and health care |
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Life sciences medicine and health care Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
topic_facet |
Life sciences medicine and health care |
description |
Obligate herbivores dominate studies of the effects of climate change on mammals, however there is limited empirical evidence for how changes in the abundance or quality of plant food affect mammalian omnivores. Omnivores can exploit a range of different food resources over the course of a year, but they often rely on seasonally restricted highly nutritious fruiting bodies during critical life stages. Brown bears Ursus arctos in Sweden are dependent on berries for fattening before entering hibernation. We used a ten-year time series to evaluate the effect of temperature and snow on annual variation in berry abundance and how this variation affected bears. We found marked interannual variation in berry production of bilberry Vaccinium myrtillus and lingonberry V. vitis-idaea, that we could attribute in part to temperature during plant dormancy and flowering and precipitation during fruit ripening. Both, autumn weights of female bears and spring weights of yearling bears increased linearly with bilberry abundance. When bilberry abundance was low, lightweight female bears had a lower reproductive success than females in better condition. This effect vanished when food abundance was above average, indicating that lightweight females could compensate for their initial weight during good bilberry years. Our study highlights the importance of considering individuals’ dynamic responses to variation in food availability, which leave some more vulnerable to food shortage than others. Individual life-history heterogeneity in response to resource variation likely affects long-term population recruitment. Our findings emphasize that Scandinavian bears can be dependent on a single food resource during a critical period of the year and are therefore less resilient to environmental change than expected for an omnivore. Future climate scenarios predict ambiguous trends for weather covariates that affected crucial stages of berry phenology, preventing a clear prognosis of how climate change may affect long-term bilberry ... |
author |
Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas |
author_facet |
Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas |
author_sort |
Hertel, Anne G. |
title |
Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
title_short |
Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
title_full |
Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
title_fullStr |
Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
title_full_unstemmed |
Data from: Berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
title_sort |
data from: berry production drives bottom-up effects on body mass and reproductive success in an omnivore |
publishDate |
2017 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-j9-z1gn https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97535 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
doi:10.5061/dryad.772g3/1 doi:10.5061/dryad.772g3/2 doi:10.5061/dryad.772g3/3 doi:10.5061/dryad.772g3/4 doi:10.1111/oik.04515 http://nbn-resolving.org/urn:nbn:nl:ui:13-j9-z1gn doi:10.5061/dryad.772g3 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:97535 |
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.772g3/110.5061/dryad.772g3/210.5061/dryad.772g3/310.5061/dryad.772g3/410.1111/oik.0451510.5061/dryad.772g3 |
_version_ |
1770274065863409664 |