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Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding

Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding

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SOININEN, Eeva M., Gilles GAUTHIER, Frédéric BILODEAU, Dominique BERTEAUX, Ludovic GIELLY, Pierre TABERLET, Galina GUSSAROVA, Eva BELLEMAIN, Kristian HASSEL, Laura EPP, 2015. Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding. In: PloS ONE. 10(1), e0115335. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0115335

@article{Soininen2015Highl-45835, title={Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding}, year={2015}, doi={10.1371/journal.pone.0115335}, number={1}, volume={10}, journal={PloS ONE}, author={Soininen, Eeva M. and Gauthier, Gilles and Bilodeau, Frédéric and Berteaux, Dominique and Gielly, Ludovic and Taberlet, Pierre and Gussarova, Galina and Bellemain, Eva and Hassel, Kristian and Epp, Laura}, note={Article Number: e0115335} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/45835"> <dc:contributor>Soininen, Eeva M.</dc:contributor> <dc:creator>Gussarova, Galina</dc:creator> <dc:creator>Berteaux, Dominique</dc:creator> <dcterms:rights rdf:resource="https://kops.uni-konstanz.de/page/termsofuse"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Taberlet, Pierre</dc:contributor> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/45835"/> <dc:creator>Bilodeau, Frédéric</dc:creator> <dc:contributor>Epp, Laura</dc:contributor> <dc:contributor>Bilodeau, Frédéric</dc:contributor> <dcterms:title>Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding</dcterms:title> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Gauthier, Gilles</dc:creator> <dc:creator>Taberlet, Pierre</dc:creator> <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/45835/3/Soininen_2-wtl4guaow5ut3.pdf"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dc:rights>terms-of-use</dc:rights> <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/45835/3/Soininen_2-wtl4guaow5ut3.pdf"/> <dc:contributor>Bellemain, Eva</dc:contributor> <dc:creator>Hassel, Kristian</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-05-17T09:38:20Z</dcterms:available> <dc:creator>Gielly, Ludovic</dc:creator> <dc:creator>Soininen, Eeva M.</dc:creator> <dc:contributor>Hassel, Kristian</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Gussarova, Galina</dc:contributor> <dc:contributor>Berteaux, Dominique</dc:contributor> <dc:creator>Bellemain, Eva</dc:creator> <dc:contributor>Gauthier, Gilles</dc:contributor> <dc:contributor>Gielly, Ludovic</dc:contributor> <dcterms:abstract xml:lang="eng">Sympatric species are expected to minimize competition by partitioning resources, especially when these are limited. Herbivores inhabiting the High Arctic in winter are a prime example of a situation where food availability is anticipated to be low, and thus reduced diet overlap is expected. We present here the first assessment of diet overlap of high arctic lemmings during winter based on DNA metabarcoding of feces. In contrast to previous analyses based on microhistology, we found that the diets of both collared (Dicrostonyx groenlandicus) and brown lemmings (Lemmus trimucronatus) on Bylot Island were dominated by Salix while mosses, which were significantly consumed only by the brown lemming, were a relatively minor food item. The most abundant plant taxon, Cassiope tetragona, which alone composes more than 50% of the available plant biomass, was not detected in feces and can thus be considered to be non-food. Most plant taxa that were identified as food items were consumed in proportion to their availability and none were clearly selected for. The resulting high diet overlap, together with a lack of habitat segregation, indicates a high potential for resource competition between the two lemming species. However, Salix is abundant in the winter habitats of lemmings on Bylot Island and the non-Salix portion of the diets differed between the two species. Also, lemming grazing impact on vegetation during winter in the study area is negligible. Hence, it seems likely that the high potential for resource competition predicted between these two species did not translate into actual competition. This illustrates that even in environments with low primary productivity food resources do not necessarily generate strong competition among herbivores.</dcterms:abstract> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2019-05-17T09:38:20Z</dc:date> <dc:creator>Epp, Laura</dc:creator> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dcterms:issued>2015</dcterms:issued> </rdf:Description> </rdf:RDF>

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