Spatial variation in food web structure in a recovering marine ecosystem
Spatial heterogeneity in food web structure and interactions may reconcile spatial variation in population and community dynamics in large marine ecosystems. In order to assess food web contributions to the different community recovery dynamics along the Newfoundland and Labrador shelf ecosystem, we...
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Online Access: | http://dx.doi.org/10.1371/journal.pone.0268440 https://dx.plos.org/10.1371/journal.pone.0268440 |
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crplos:10.1371/journal.pone.0268440 2024-05-19T07:44:18+00:00 Spatial variation in food web structure in a recovering marine ecosystem Krumsick, Kyle J. Fisher, Jonathan A. D. Paiva, Vitor Hugo Rodrigues Research and Development Corporation of Newfoundland and Labrador Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada Canada First Research Excellence Fund 2022 http://dx.doi.org/10.1371/journal.pone.0268440 https://dx.plos.org/10.1371/journal.pone.0268440 en eng Public Library of Science (PLoS) http://creativecommons.org/licenses/by/4.0/ PLOS ONE volume 17, issue 5, page e0268440 ISSN 1932-6203 journal-article 2022 crplos https://doi.org/10.1371/journal.pone.0268440 2024-05-01T06:54:25Z Spatial heterogeneity in food web structure and interactions may reconcile spatial variation in population and community dynamics in large marine ecosystems. In order to assess food web contributions to the different community recovery dynamics along the Newfoundland and Labrador shelf ecosystem, we quantified species interactions using stable isotope mixing models and food web metrics within three sub-regions. Representative samples of each species caught in trawls and plankton tows were analyzed for stomach contents and stable isotope ratios (δ 15 N and δ 13 C) to parameterize isotope mixing models. Regional variation, highlighted by the diets of three economically important species, was observed such that the southern region demonstrated a variety of trophic pathways of nutrient flow into the higher food web while the diets of fish in the northern regions were typically dominated by one or two pathways via dominant prey species, specifically shrimp ( Pandalus sp.) and hyperiids. Food web metrics indicated that the low-diversity northern regions had higher connectance and shorter food chain lengths. This observed regional variation contributes to our understanding of the role of specific forage species to the ecosystem which is an essential contribution towards ecosystem-based management decisions. Article in Journal/Newspaper Newfoundland PLOS PLOS ONE 17 5 e0268440 |
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crplos |
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English |
description |
Spatial heterogeneity in food web structure and interactions may reconcile spatial variation in population and community dynamics in large marine ecosystems. In order to assess food web contributions to the different community recovery dynamics along the Newfoundland and Labrador shelf ecosystem, we quantified species interactions using stable isotope mixing models and food web metrics within three sub-regions. Representative samples of each species caught in trawls and plankton tows were analyzed for stomach contents and stable isotope ratios (δ 15 N and δ 13 C) to parameterize isotope mixing models. Regional variation, highlighted by the diets of three economically important species, was observed such that the southern region demonstrated a variety of trophic pathways of nutrient flow into the higher food web while the diets of fish in the northern regions were typically dominated by one or two pathways via dominant prey species, specifically shrimp ( Pandalus sp.) and hyperiids. Food web metrics indicated that the low-diversity northern regions had higher connectance and shorter food chain lengths. This observed regional variation contributes to our understanding of the role of specific forage species to the ecosystem which is an essential contribution towards ecosystem-based management decisions. |
author2 |
Paiva, Vitor Hugo Rodrigues Research and Development Corporation of Newfoundland and Labrador Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada Canada First Research Excellence Fund |
format |
Article in Journal/Newspaper |
author |
Krumsick, Kyle J. Fisher, Jonathan A. D. |
spellingShingle |
Krumsick, Kyle J. Fisher, Jonathan A. D. Spatial variation in food web structure in a recovering marine ecosystem |
author_facet |
Krumsick, Kyle J. Fisher, Jonathan A. D. |
author_sort |
Krumsick, Kyle J. |
title |
Spatial variation in food web structure in a recovering marine ecosystem |
title_short |
Spatial variation in food web structure in a recovering marine ecosystem |
title_full |
Spatial variation in food web structure in a recovering marine ecosystem |
title_fullStr |
Spatial variation in food web structure in a recovering marine ecosystem |
title_full_unstemmed |
Spatial variation in food web structure in a recovering marine ecosystem |
title_sort |
spatial variation in food web structure in a recovering marine ecosystem |
publisher |
Public Library of Science (PLoS) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1371/journal.pone.0268440 https://dx.plos.org/10.1371/journal.pone.0268440 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
PLOS ONE volume 17, issue 5, page e0268440 ISSN 1932-6203 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0268440 |
container_title |
PLOS ONE |
container_volume |
17 |
container_issue |
5 |
container_start_page |
e0268440 |
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1799484063537430528 |