Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska
Abstract Knowledge of carnivore diets is essential to understand how carnivore populations respond demographically to variations in prey abundance. Analysis of stable isotopes is a useful complement to traditional methods of analyzing carnivore diets . We used data on δ13 C and δ15 N in wolverine ti...
Published in: | Current Zoology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2009
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/czoolo/55.3.188 http://academic.oup.com/cz/article-pdf/55/3/188/29955849/czoolo0188.pdf |
id |
croxfordunivpr:10.1093/czoolo/55.3.188 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/czoolo/55.3.188 2024-04-28T08:14:58+00:00 Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska Dalerum, Fredrik Angerbjörn, Anders Kunkel, Kyran Shults, Brad S. 2009 http://dx.doi.org/10.1093/czoolo/55.3.188 http://academic.oup.com/cz/article-pdf/55/3/188/29955849/czoolo0188.pdf en eng Oxford University Press (OUP) Current Zoology volume 55, issue 3, page 188-192 ISSN 2396-9814 1674-5507 Animal Science and Zoology journal-article 2009 croxfordunivpr https://doi.org/10.1093/czoolo/55.3.188 2024-04-09T07:54:40Z Abstract Knowledge of carnivore diets is essential to understand how carnivore populations respond demographically to variations in prey abundance. Analysis of stable isotopes is a useful complement to traditional methods of analyzing carnivore diets . We used data on δ13 C and δ15 N in wolverine tissues to investigate patterns of seasonal and annual diet variation in a wolverine Gulo gulo population in the western Brooks Range, Alaska, USA. The stable isotope ratios in wolverine tissues generally reflected that of terrestrial carnivores, corroborating previous diet studies on wolverines. We also found variation in δ13 C and δ15 N both between muscle samples collected over several years and between tissues with different assimilation rates, even after correcting for isotopic fractionation. This suggests both annual and seasonal diet variation. Our results indicate that data on δ13 C and δ15 N holds promise for qualitative assessments of wolverine diet changes over time. Such temporal variation may be important indicators of ecological responses to environmental perturbations, and we suggest that more refined studies of stable isotopes may be an important tool when studying temporal change in diets of wolverines and similar carnivores. Article in Journal/Newspaper Brooks Range Gulo gulo wolverine Alaska Oxford University Press Current Zoology 55 3 188 192 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology |
spellingShingle |
Animal Science and Zoology Dalerum, Fredrik Angerbjörn, Anders Kunkel, Kyran Shults, Brad S. Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
topic_facet |
Animal Science and Zoology |
description |
Abstract Knowledge of carnivore diets is essential to understand how carnivore populations respond demographically to variations in prey abundance. Analysis of stable isotopes is a useful complement to traditional methods of analyzing carnivore diets . We used data on δ13 C and δ15 N in wolverine tissues to investigate patterns of seasonal and annual diet variation in a wolverine Gulo gulo population in the western Brooks Range, Alaska, USA. The stable isotope ratios in wolverine tissues generally reflected that of terrestrial carnivores, corroborating previous diet studies on wolverines. We also found variation in δ13 C and δ15 N both between muscle samples collected over several years and between tissues with different assimilation rates, even after correcting for isotopic fractionation. This suggests both annual and seasonal diet variation. Our results indicate that data on δ13 C and δ15 N holds promise for qualitative assessments of wolverine diet changes over time. Such temporal variation may be important indicators of ecological responses to environmental perturbations, and we suggest that more refined studies of stable isotopes may be an important tool when studying temporal change in diets of wolverines and similar carnivores. |
format |
Article in Journal/Newspaper |
author |
Dalerum, Fredrik Angerbjörn, Anders Kunkel, Kyran Shults, Brad S. |
author_facet |
Dalerum, Fredrik Angerbjörn, Anders Kunkel, Kyran Shults, Brad S. |
author_sort |
Dalerum, Fredrik |
title |
Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
title_short |
Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
title_full |
Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
title_fullStr |
Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
title_full_unstemmed |
Patterns of δ13 C and δ15 N in wolverine Gulo gulo tissues from the Brooks Range, Alaska |
title_sort |
patterns of δ13 c and δ15 n in wolverine gulo gulo tissues from the brooks range, alaska |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/czoolo/55.3.188 http://academic.oup.com/cz/article-pdf/55/3/188/29955849/czoolo0188.pdf |
genre |
Brooks Range Gulo gulo wolverine Alaska |
genre_facet |
Brooks Range Gulo gulo wolverine Alaska |
op_source |
Current Zoology volume 55, issue 3, page 188-192 ISSN 2396-9814 1674-5507 |
op_doi |
https://doi.org/10.1093/czoolo/55.3.188 |
container_title |
Current Zoology |
container_volume |
55 |
container_issue |
3 |
container_start_page |
188 |
op_container_end_page |
192 |
_version_ |
1797580802690646016 |