Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system
Introduction of non-native species is a leading threat to global aquatic biodiversity. Competition between native and non-native species is often influenced by changes in food availability or suitable habitat conditions. We investigated diet breadth and degree of trophic niche overlap for a fish ass...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:94303 2023-07-02T03:30:57+02:00 Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system Cutting, Kyle A. Cross, Wyatt F. Anderson, Michelle L. Reese, Elizabeth G. 2016-05-26T18:05:13.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-s3-l8im https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94303 unknown doi:10.5061/dryad.0c42k/1 doi:10.1371/journal.pone.0156187 PMID:27205901 http://nbn-resolving.org/urn:nbn:nl:ui:13-s3-l8im doi:10.5061/dryad.0c42k https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94303 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2016 ftdans https://doi.org/10.5061/dryad.0c42k/110.1371/journal.pone.015618710.5061/dryad.0c42k 2023-06-13T13:22:27Z Introduction of non-native species is a leading threat to global aquatic biodiversity. Competition between native and non-native species is often influenced by changes in food availability or suitable habitat conditions. We investigated diet breadth and degree of trophic niche overlap for a fish assemblage of native and non-native species inhabiting a shallow, high elevation lake system. This assemblage includes one of the last remaining post-glacial endemic populations of adfluvial Arctic grayling (Thymallus arcticus) in the contiguous United States. We examined gut contents and stable isotope values of fish taxa in fall and spring to assess both short- (within season) and long-term (between season) changes in trophic niches. We incorporated these data into a secondary isotopic analysis using a Bayesian statistical framework to estimate long-term trophic niche. Our data suggest that in this system, Arctic grayling share both a short- and long-term common food base with non-native trout of cutthroat x rainbow hybrid species (Oncorhynchus clarkia bouvieri x Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis). In addition, trophic niche overlap among Arctic grayling, hybrid trout, and brook trout appeared to be stronger during spring. In contrast, the native species of Arctic grayling, burbot (Lota lota), and suckers (Catostomus spp.) largely consumed different prey items. Our results suggest strong seasonal differences in trophic niche overlap among non-native trout and Arctic grayling, with a potential for greatest competition for food during spring. We suggest that conservation of endemic Arctic grayling in high-elevation lakes will require recognition of the potential for coexisting non-native taxa to impede well-intentioned recovery efforts. Other/Unknown Material Arctic grayling Arctic Burbot Lota lota Thymallus arcticus lota Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Cutting, Kyle A. Cross, Wyatt F. Anderson, Michelle L. Reese, Elizabeth G. Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
topic_facet |
Life sciences medicine and health care |
description |
Introduction of non-native species is a leading threat to global aquatic biodiversity. Competition between native and non-native species is often influenced by changes in food availability or suitable habitat conditions. We investigated diet breadth and degree of trophic niche overlap for a fish assemblage of native and non-native species inhabiting a shallow, high elevation lake system. This assemblage includes one of the last remaining post-glacial endemic populations of adfluvial Arctic grayling (Thymallus arcticus) in the contiguous United States. We examined gut contents and stable isotope values of fish taxa in fall and spring to assess both short- (within season) and long-term (between season) changes in trophic niches. We incorporated these data into a secondary isotopic analysis using a Bayesian statistical framework to estimate long-term trophic niche. Our data suggest that in this system, Arctic grayling share both a short- and long-term common food base with non-native trout of cutthroat x rainbow hybrid species (Oncorhynchus clarkia bouvieri x Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis). In addition, trophic niche overlap among Arctic grayling, hybrid trout, and brook trout appeared to be stronger during spring. In contrast, the native species of Arctic grayling, burbot (Lota lota), and suckers (Catostomus spp.) largely consumed different prey items. Our results suggest strong seasonal differences in trophic niche overlap among non-native trout and Arctic grayling, with a potential for greatest competition for food during spring. We suggest that conservation of endemic Arctic grayling in high-elevation lakes will require recognition of the potential for coexisting non-native taxa to impede well-intentioned recovery efforts. |
author |
Cutting, Kyle A. Cross, Wyatt F. Anderson, Michelle L. Reese, Elizabeth G. |
author_facet |
Cutting, Kyle A. Cross, Wyatt F. Anderson, Michelle L. Reese, Elizabeth G. |
author_sort |
Cutting, Kyle A. |
title |
Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
title_short |
Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
title_full |
Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
title_fullStr |
Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
title_full_unstemmed |
Data from: Seasonal change in trophic niche of adfluvial arctic grayling (Thymallus arcticus) and coexisting fishes in a high-elevation lake system |
title_sort |
data from: seasonal change in trophic niche of adfluvial arctic grayling (thymallus arcticus) and coexisting fishes in a high-elevation lake system |
publishDate |
2016 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-s3-l8im https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94303 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic grayling Arctic Burbot Lota lota Thymallus arcticus lota |
genre_facet |
Arctic grayling Arctic Burbot Lota lota Thymallus arcticus lota |
op_relation |
doi:10.5061/dryad.0c42k/1 doi:10.1371/journal.pone.0156187 PMID:27205901 http://nbn-resolving.org/urn:nbn:nl:ui:13-s3-l8im doi:10.5061/dryad.0c42k https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:94303 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.0c42k/110.1371/journal.pone.015618710.5061/dryad.0c42k |
_version_ |
1770275212585074688 |