Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data.
Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlo...
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ftdoajarticles:oai:doaj.org/article:38904a862b6b40f79e9fe007d8883521 2023-05-15T16:03:33+02:00 Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. Viola Pavlova Jacob Nabe-Nielsen Rune Dietz Jens-Christian Svenning Katrin Vorkamp Frank Farsø Rigét Christian Sonne Robert J Letcher Volker Grimm 2014-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0104037 https://doaj.org/article/38904a862b6b40f79e9fe007d8883521 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4125222?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0104037 https://doaj.org/article/38904a862b6b40f79e9fe007d8883521 PLoS ONE, Vol 9, Iss 8, p e104037 (2014) Medicine R Science Q article 2014 ftdoajarticles https://doi.org/10.1371/journal.pone.0104037 2022-12-31T10:49:56Z Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlorinated biphenyl (PCB) congener, 2,2',4,4',55-hexaCB (CB153) in bear adipose tissue as an indicator of food intake. By comparing the CB153 tissue concentrations in wild polar bears with estimates from a purposely designed individual-based model, we identified the possible combinations of field metabolic rates (FMR) and CB153 deposition efficiencies in East Greenland polar bears. Our simulations indicate that if 30% of the CB153 consumed by polar bear individuals were deposited into their adipose tissue, the corresponding FMR would be only two times the basal metabolic rate. In contrast, if the modelled CB153 deposition efficiency were 10%, adult polar bears would require six times more energy than that needed to cover basal metabolism. This is considerably higher than what has been assumed for polar bears in previous studies though it is similar to FMRs found in other marine mammals. An implication of this result is that even relatively small reductions in future feeding opportunities could impact the survival of East Greenland polar bears. Article in Journal/Newspaper East Greenland Greenland Ursus maritimus Directory of Open Access Journals: DOAJ Articles Greenland PLoS ONE 9 8 e104037 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
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Medicine R Science Q |
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Medicine R Science Q Viola Pavlova Jacob Nabe-Nielsen Rune Dietz Jens-Christian Svenning Katrin Vorkamp Frank Farsø Rigét Christian Sonne Robert J Letcher Volker Grimm Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
topic_facet |
Medicine R Science Q |
description |
Climate change will increasingly affect the natural habitat and diet of polar bears (Ursus maritimus). Understanding the energetic needs of polar bears is therefore important. We developed a theoretical method for estimating polar bear food consumption based on using the highly recalcitrant polychlorinated biphenyl (PCB) congener, 2,2',4,4',55-hexaCB (CB153) in bear adipose tissue as an indicator of food intake. By comparing the CB153 tissue concentrations in wild polar bears with estimates from a purposely designed individual-based model, we identified the possible combinations of field metabolic rates (FMR) and CB153 deposition efficiencies in East Greenland polar bears. Our simulations indicate that if 30% of the CB153 consumed by polar bear individuals were deposited into their adipose tissue, the corresponding FMR would be only two times the basal metabolic rate. In contrast, if the modelled CB153 deposition efficiency were 10%, adult polar bears would require six times more energy than that needed to cover basal metabolism. This is considerably higher than what has been assumed for polar bears in previous studies though it is similar to FMRs found in other marine mammals. An implication of this result is that even relatively small reductions in future feeding opportunities could impact the survival of East Greenland polar bears. |
format |
Article in Journal/Newspaper |
author |
Viola Pavlova Jacob Nabe-Nielsen Rune Dietz Jens-Christian Svenning Katrin Vorkamp Frank Farsø Rigét Christian Sonne Robert J Letcher Volker Grimm |
author_facet |
Viola Pavlova Jacob Nabe-Nielsen Rune Dietz Jens-Christian Svenning Katrin Vorkamp Frank Farsø Rigét Christian Sonne Robert J Letcher Volker Grimm |
author_sort |
Viola Pavlova |
title |
Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
title_short |
Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
title_full |
Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
title_fullStr |
Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
title_full_unstemmed |
Field metabolic rate and PCB adipose tissue deposition efficiency in East Greenland polar bears derived from contaminant monitoring data. |
title_sort |
field metabolic rate and pcb adipose tissue deposition efficiency in east greenland polar bears derived from contaminant monitoring data. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0104037 https://doaj.org/article/38904a862b6b40f79e9fe007d8883521 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Ursus maritimus |
genre_facet |
East Greenland Greenland Ursus maritimus |
op_source |
PLoS ONE, Vol 9, Iss 8, p e104037 (2014) |
op_relation |
http://europepmc.org/articles/PMC4125222?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0104037 https://doaj.org/article/38904a862b6b40f79e9fe007d8883521 |
op_doi |
https://doi.org/10.1371/journal.pone.0104037 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
8 |
container_start_page |
e104037 |
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1766399237061345280 |