Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis
Intraspecific competition for food is expected to increase the trophic niche width of consumers, defined here as their diet diversity, but this process has been little studied in herbivores. Population densities of small rodents fluctuate greatly, providing a good study model to evaluate effects of...
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ftoslouniv:oai:www.duo.uio.no:10852/59788 2023-05-15T15:05:17+02:00 Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker 2014-02-19T19:31:53Z http://hdl.handle.net/10852/59788 http://urn.nb.no/URN:NBN:no-62463 https://doi.org/10.1080/10256016.2014.915824 EN eng http://urn.nb.no/URN:NBN:no-62463 Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker . Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis. Isotopes in environmental and health studies. 2014, 50(3), 361-381 http://hdl.handle.net/10852/59788 1116860 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Isotopes in environmental and health studies&rft.volume=50&rft.spage=361&rft.date=2014 Isotopes in environmental and health studies 50 3 361 381 http://dx.doi.org/10.1080/10256016.2014.915824 URN:NBN:no-62463 Fulltext https://www.duo.uio.no/bitstream/handle/10852/59788/2/Soininen%2Bet%2Bal%2Bfor%2BIEHS_accepted%2Bversion.pdf 1025-6016 Journal article Tidsskriftartikkel Peer reviewed AcceptedVersion 2014 ftoslouniv https://doi.org/10.1080/10256016.2014.915824 2020-06-21T08:51:30Z Intraspecific competition for food is expected to increase the trophic niche width of consumers, defined here as their diet diversity, but this process has been little studied in herbivores. Population densities of small rodents fluctuate greatly, providing a good study model to evaluate effects of competition on trophic niche. We studied resource use in five arctic small rodent populations of four species combining DNA metabarcoding of stomach contents and stable isotope analysis (SIA). Our results suggest that for small rodents, the most pronounced effect of competition on trophic niche is due to increased use of secondary habitats and to habitat-specific diets, rather than an expansion of trophic niche in primary habitat. DNA metabarcoding and SIA provided complementary information about the composition and temporal variation of herbivore diets. Combing these two approaches requires caution, as the underlying processes causing observed patterns may differ between methodologies due to different spatiotemporal scales. The final version of this research has been published in Isotopes in Environmental and Health Studies. © 2014 Taylor & Francis Article in Journal/Newspaper Arctic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Isotopes in Environmental and Health Studies 50 3 361 381 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
Intraspecific competition for food is expected to increase the trophic niche width of consumers, defined here as their diet diversity, but this process has been little studied in herbivores. Population densities of small rodents fluctuate greatly, providing a good study model to evaluate effects of competition on trophic niche. We studied resource use in five arctic small rodent populations of four species combining DNA metabarcoding of stomach contents and stable isotope analysis (SIA). Our results suggest that for small rodents, the most pronounced effect of competition on trophic niche is due to increased use of secondary habitats and to habitat-specific diets, rather than an expansion of trophic niche in primary habitat. DNA metabarcoding and SIA provided complementary information about the composition and temporal variation of herbivore diets. Combing these two approaches requires caution, as the underlying processes causing observed patterns may differ between methodologies due to different spatiotemporal scales. The final version of this research has been published in Isotopes in Environmental and Health Studies. © 2014 Taylor & Francis |
format |
Article in Journal/Newspaper |
author |
Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker |
spellingShingle |
Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
author_facet |
Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker |
author_sort |
Soininen, Eeva M |
title |
Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
title_short |
Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
title_full |
Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
title_fullStr |
Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
title_full_unstemmed |
Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis |
title_sort |
sources of variation in small rodent trophic niche: new insights from dna metabarcoding and stable isotope analysis |
publishDate |
2014 |
url |
http://hdl.handle.net/10852/59788 http://urn.nb.no/URN:NBN:no-62463 https://doi.org/10.1080/10256016.2014.915824 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
1025-6016 |
op_relation |
http://urn.nb.no/URN:NBN:no-62463 Soininen, Eeva M Ehrich, Dorothee Lecomte, Nicolas Yoccoz, Nigel Gilles Tarroux, Arnaud Berteaux, Dominique Gauthier, Gilles Gielly, Ludovic Brochmann, Christian Gussarova, Galina Ims, Rolf Anker . Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis. Isotopes in environmental and health studies. 2014, 50(3), 361-381 http://hdl.handle.net/10852/59788 1116860 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Isotopes in environmental and health studies&rft.volume=50&rft.spage=361&rft.date=2014 Isotopes in environmental and health studies 50 3 361 381 http://dx.doi.org/10.1080/10256016.2014.915824 URN:NBN:no-62463 Fulltext https://www.duo.uio.no/bitstream/handle/10852/59788/2/Soininen%2Bet%2Bal%2Bfor%2BIEHS_accepted%2Bversion.pdf |
op_doi |
https://doi.org/10.1080/10256016.2014.915824 |
container_title |
Isotopes in Environmental and Health Studies |
container_volume |
50 |
container_issue |
3 |
container_start_page |
361 |
op_container_end_page |
381 |
_version_ |
1766337013268611072 |