A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species.
Expanding populations of North American midcontinent lesser snow geese (Anser caerulescens caerulescens) have potential to alter ecosystems throughout the Arctic and subarctic where they breed. Efforts to understand origins of harvested lesser snow geese to better inform management decisions have tr...
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ftdoajarticles:oai:doaj.org/article:423d5990509644d190537c62a029213a 2023-05-15T13:07:42+02:00 A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. Drew N Fowler Elisabeth B Webb Frank B Baldwin Mark P Vrtiska Keith A Hobson 2018-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0203077 https://doaj.org/article/423d5990509644d190537c62a029213a EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC6108521?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0203077 https://doaj.org/article/423d5990509644d190537c62a029213a PLoS ONE, Vol 13, Iss 8, p e0203077 (2018) Medicine R Science Q article 2018 ftdoajarticles https://doi.org/10.1371/journal.pone.0203077 2022-12-30T21:04:54Z Expanding populations of North American midcontinent lesser snow geese (Anser caerulescens caerulescens) have potential to alter ecosystems throughout the Arctic and subarctic where they breed. Efforts to understand origins of harvested lesser snow geese to better inform management decisions have traditionally required mark-recapture approaches, while aerial photographic surveys have typically been used to identify breeding distributions. As a potential alternative, isotopic patterns that are metabolically fixed within newly grown flight feathers following summer molting could provide inferences regarding geographic breeding origin of individuals, without the need for prior capture. Our objective was to assess potential to use four stable isotopes (δ13C, δ15N, δ34S, δ2H) from feather material to determine breeding origins. We obtained newly grown flight feathers from individuals during summer banding at three Arctic and two subarctic breeding colonies in 2014 (n = 56) and 2016 (n = 45). We used linear discriminant analyses to predict breeding origins from models using combinations of stable isotopes as predictors and evaluated model accuracy when predicting colony, subregion, or subpopulation levels. We found a strong inverse relationship between δ2H values and increasing latitude (R2 = 0.83), resulting in differences (F4, 51 = 90.41, P < 0.0001) among sampled colonies. No differences in δ13C or δ15N were detected among colonies, although δ34S in Akimiski Island, Baffin Island, and Karrak Lake were more enriched (F4, 51 = 11.25, P < 0.0001). Using δ2H values as a predictor, discriminant analyses improved accuracy in classification level as precision decreased [model accuracy = 67% (colony), 88% (subregion), 94% (subpopulation)]. Application of the isotopic methods we describe could be used to provide an alternative monitoring method of population metrics, such as overall breeding population distribution, region-specific productivity and migratory connectivity that are informative to management decision ... Article in Journal/Newspaper Akimiski island Arctic Baffin Island Baffin Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Baffin Island Karrak Lake ENVELOPE(-100.250,-100.250,67.250,67.250) Akimiski Island ENVELOPE(-81.275,-81.275,53.008,53.008) PLOS ONE 13 8 e0203077 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
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Medicine R Science Q Drew N Fowler Elisabeth B Webb Frank B Baldwin Mark P Vrtiska Keith A Hobson A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
topic_facet |
Medicine R Science Q |
description |
Expanding populations of North American midcontinent lesser snow geese (Anser caerulescens caerulescens) have potential to alter ecosystems throughout the Arctic and subarctic where they breed. Efforts to understand origins of harvested lesser snow geese to better inform management decisions have traditionally required mark-recapture approaches, while aerial photographic surveys have typically been used to identify breeding distributions. As a potential alternative, isotopic patterns that are metabolically fixed within newly grown flight feathers following summer molting could provide inferences regarding geographic breeding origin of individuals, without the need for prior capture. Our objective was to assess potential to use four stable isotopes (δ13C, δ15N, δ34S, δ2H) from feather material to determine breeding origins. We obtained newly grown flight feathers from individuals during summer banding at three Arctic and two subarctic breeding colonies in 2014 (n = 56) and 2016 (n = 45). We used linear discriminant analyses to predict breeding origins from models using combinations of stable isotopes as predictors and evaluated model accuracy when predicting colony, subregion, or subpopulation levels. We found a strong inverse relationship between δ2H values and increasing latitude (R2 = 0.83), resulting in differences (F4, 51 = 90.41, P < 0.0001) among sampled colonies. No differences in δ13C or δ15N were detected among colonies, although δ34S in Akimiski Island, Baffin Island, and Karrak Lake were more enriched (F4, 51 = 11.25, P < 0.0001). Using δ2H values as a predictor, discriminant analyses improved accuracy in classification level as precision decreased [model accuracy = 67% (colony), 88% (subregion), 94% (subpopulation)]. Application of the isotopic methods we describe could be used to provide an alternative monitoring method of population metrics, such as overall breeding population distribution, region-specific productivity and migratory connectivity that are informative to management decision ... |
format |
Article in Journal/Newspaper |
author |
Drew N Fowler Elisabeth B Webb Frank B Baldwin Mark P Vrtiska Keith A Hobson |
author_facet |
Drew N Fowler Elisabeth B Webb Frank B Baldwin Mark P Vrtiska Keith A Hobson |
author_sort |
Drew N Fowler |
title |
A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
title_short |
A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
title_full |
A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
title_fullStr |
A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
title_full_unstemmed |
A multi-isotope (δ13C, δ15N, δ34S, δ2H) approach to establishing migratory connectivity in lesser snow geese: Tracking an overabundant species. |
title_sort |
multi-isotope (δ13c, δ15n, δ34s, δ2h) approach to establishing migratory connectivity in lesser snow geese: tracking an overabundant species. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pone.0203077 https://doaj.org/article/423d5990509644d190537c62a029213a |
long_lat |
ENVELOPE(-100.250,-100.250,67.250,67.250) ENVELOPE(-81.275,-81.275,53.008,53.008) |
geographic |
Arctic Baffin Island Karrak Lake Akimiski Island |
geographic_facet |
Arctic Baffin Island Karrak Lake Akimiski Island |
genre |
Akimiski island Arctic Baffin Island Baffin Subarctic |
genre_facet |
Akimiski island Arctic Baffin Island Baffin Subarctic |
op_source |
PLoS ONE, Vol 13, Iss 8, p e0203077 (2018) |
op_relation |
http://europepmc.org/articles/PMC6108521?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0203077 https://doaj.org/article/423d5990509644d190537c62a029213a |
op_doi |
https://doi.org/10.1371/journal.pone.0203077 |
container_title |
PLOS ONE |
container_volume |
13 |
container_issue |
8 |
container_start_page |
e0203077 |
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1766063980669829120 |