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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Data Archiving and Networked Services (DANS)
2020
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Online Access: | https://doi.org/10.5061/dryad.772g3 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::22eb710b1299e884b27ef83e4087b77c 2023-05-15T18:42:00+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 Langval, Ola 2020-06-26 https://doi.org/10.5061/dryad.772g3 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.772g3 https://dx.doi.org/10.5061/dryad.772g3 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:97535 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97535 10.5061/dryad.772g3 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 Life sciences medicine and health care Vaccinium myrtillus Ursus arctos masting climate effects life history traits Vaccinium vitis-idaea Central Sweden envir manag Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.772g3 2023-01-22T16:53:39Z 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 ... Dataset Ursus arctos Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care Vaccinium myrtillus Ursus arctos masting climate effects life history traits Vaccinium vitis-idaea Central Sweden envir manag |
spellingShingle |
Life sciences medicine and health care Vaccinium myrtillus Ursus arctos masting climate effects life history traits Vaccinium vitis-idaea Central Sweden envir manag Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas Langval, Ola 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 Vaccinium myrtillus Ursus arctos masting climate effects life history traits Vaccinium vitis-idaea Central Sweden envir manag |
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 ... |
format |
Dataset |
author |
Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas Langval, Ola |
author_facet |
Hertel, Anne G. Bischof, Richard Langvall, Ola Mysterud, Atle Kindberg, Jonas Swenson, Jon E. Zedrosser, Andreas Langval, Ola |
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 |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.772g3 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:97535 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:97535 10.5061/dryad.772g3 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
http://dx.doi.org/10.5061/dryad.772g3 https://dx.doi.org/10.5061/dryad.772g3 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.772g3 |
_version_ |
1766231593691643904 |