(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008
Inter-individual variation in diet within generalist animal populations is thought to be a widespread phenomenon but its potential causes are poorly known. Inter-individual variation can be amplified by the availability and use of allochthonous resources, i.e., resources coming from spatially distin...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.838989 2024-09-15T17:50:50+00:00 (Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 Tarroux, Arnaud Bêty, Joël Gauthier, Gilles Berteaux, Dominique LATITUDE: 72.883300 * LONGITUDE: -79.900000 * MINIMUM ELEVATION: 40.0 m * MAXIMUM ELEVATION: 40.0 m 2012 text/tab-separated-values, 51 data points https://doi.pangaea.de/10.1594/PANGAEA.838989 https://doi.org/10.1594/PANGAEA.838989 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.838989 https://doi.org/10.1594/PANGAEA.838989 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Tarroux, Arnaud; Bêty, Joël; Gauthier, Gilles; Berteaux, Dominique (2012): The marine side of a terrestrial carnivore: Intra-population variation in use of allochthonous resources by arctic foxes. PLoS ONE, 7(8), e42427, https://doi.org/10.1371/journal.pone.0042427.s005 BIO Biology BY_Island2 Bylot Island North West Territories Canada International Polar Year (2007-2008) IPY Mass spectrometer Finnigan Delta Plus Parameter Sample amount Sample type Season Time coverage δ13C δ15N dataset 2012 ftpangaea https://doi.org/10.1594/PANGAEA.83898910.1371/journal.pone.0042427.s005 2024-07-24T02:31:33Z Inter-individual variation in diet within generalist animal populations is thought to be a widespread phenomenon but its potential causes are poorly known. Inter-individual variation can be amplified by the availability and use of allochthonous resources, i.e., resources coming from spatially distinct ecosystems. Using a wild population of arctic fox as a study model, we tested hypotheses that could explain variation in both population and individual isotopic niches, used here as proxy for the trophic niche. The arctic fox is an opportunistic forager, dwelling in terrestrial and marine environments characterized by strong spatial (arctic-nesting birds) and temporal (cyclic lemmings) fluctuations in resource abundance. First, we tested the hypothesis that generalist foraging habits, in association with temporal variation in prey accessibility, should induce temporal changes in isotopic niche width and diet. Second, we investigated whether within-population variation in the isotopic niche could be explained by individual characteristics (sex and breeding status) and environmental factors (spatiotemporal variation in prey availability). We addressed these questions using isotopic analysis and Bayesian mixing models in conjunction with linear mixed-effects models. We found that: i) arctic fox populations can simultaneously undergo short-term (i.e., within a few months) reduction in both isotopic niche width and inter-individual variability in isotopic ratios, ii) individual isotopic ratios were higher and more representative of a marine-based diet for non-breeding than breeding foxes early in spring, and iii) lemming population cycles did not appear to directly influence the diet of individual foxes after taking their breeding status into account. However, lemming abundance was correlated to proportion of breeding foxes, and could thus indirectly affect the diet at the population scale. Dataset Arctic Arctic Fox Bylot Island International Polar Year IPY Vulpes lagopus PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-79.900000,-79.900000,72.883300,72.883300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
BIO Biology BY_Island2 Bylot Island North West Territories Canada International Polar Year (2007-2008) IPY Mass spectrometer Finnigan Delta Plus Parameter Sample amount Sample type Season Time coverage δ13C δ15N |
spellingShingle |
BIO Biology BY_Island2 Bylot Island North West Territories Canada International Polar Year (2007-2008) IPY Mass spectrometer Finnigan Delta Plus Parameter Sample amount Sample type Season Time coverage δ13C δ15N Tarroux, Arnaud Bêty, Joël Gauthier, Gilles Berteaux, Dominique (Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
topic_facet |
BIO Biology BY_Island2 Bylot Island North West Territories Canada International Polar Year (2007-2008) IPY Mass spectrometer Finnigan Delta Plus Parameter Sample amount Sample type Season Time coverage δ13C δ15N |
description |
Inter-individual variation in diet within generalist animal populations is thought to be a widespread phenomenon but its potential causes are poorly known. Inter-individual variation can be amplified by the availability and use of allochthonous resources, i.e., resources coming from spatially distinct ecosystems. Using a wild population of arctic fox as a study model, we tested hypotheses that could explain variation in both population and individual isotopic niches, used here as proxy for the trophic niche. The arctic fox is an opportunistic forager, dwelling in terrestrial and marine environments characterized by strong spatial (arctic-nesting birds) and temporal (cyclic lemmings) fluctuations in resource abundance. First, we tested the hypothesis that generalist foraging habits, in association with temporal variation in prey accessibility, should induce temporal changes in isotopic niche width and diet. Second, we investigated whether within-population variation in the isotopic niche could be explained by individual characteristics (sex and breeding status) and environmental factors (spatiotemporal variation in prey availability). We addressed these questions using isotopic analysis and Bayesian mixing models in conjunction with linear mixed-effects models. We found that: i) arctic fox populations can simultaneously undergo short-term (i.e., within a few months) reduction in both isotopic niche width and inter-individual variability in isotopic ratios, ii) individual isotopic ratios were higher and more representative of a marine-based diet for non-breeding than breeding foxes early in spring, and iii) lemming population cycles did not appear to directly influence the diet of individual foxes after taking their breeding status into account. However, lemming abundance was correlated to proportion of breeding foxes, and could thus indirectly affect the diet at the population scale. |
format |
Dataset |
author |
Tarroux, Arnaud Bêty, Joël Gauthier, Gilles Berteaux, Dominique |
author_facet |
Tarroux, Arnaud Bêty, Joël Gauthier, Gilles Berteaux, Dominique |
author_sort |
Tarroux, Arnaud |
title |
(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
title_short |
(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
title_full |
(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
title_fullStr |
(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
title_full_unstemmed |
(Table 2) Carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (Vulpes lagopus) on Bylot Island between 2003-2008 |
title_sort |
(table 2) carbon and nitrogen isotopic ratios in blood sampled from arctic foxes (vulpes lagopus) on bylot island between 2003-2008 |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.838989 https://doi.org/10.1594/PANGAEA.838989 |
op_coverage |
LATITUDE: 72.883300 * LONGITUDE: -79.900000 * MINIMUM ELEVATION: 40.0 m * MAXIMUM ELEVATION: 40.0 m |
long_lat |
ENVELOPE(-79.900000,-79.900000,72.883300,72.883300) |
genre |
Arctic Arctic Fox Bylot Island International Polar Year IPY Vulpes lagopus |
genre_facet |
Arctic Arctic Fox Bylot Island International Polar Year IPY Vulpes lagopus |
op_source |
Supplement to: Tarroux, Arnaud; Bêty, Joël; Gauthier, Gilles; Berteaux, Dominique (2012): The marine side of a terrestrial carnivore: Intra-population variation in use of allochthonous resources by arctic foxes. PLoS ONE, 7(8), e42427, https://doi.org/10.1371/journal.pone.0042427.s005 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.838989 https://doi.org/10.1594/PANGAEA.838989 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83898910.1371/journal.pone.0042427.s005 |
_version_ |
1810292628145569792 |