An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data
Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation. Stable isotopes and mass-balanced trophic models are well-known and widely used as approximations to...
Published in: | Progress in Oceanography |
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Online Access: | https://doi.org/10.1016/j.pocean.2013.09.002 |
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ftzenodo:oai:zenodo.org:9919 2024-09-15T18:24:44+00:00 An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data Lassalle, Géraldine Chouvelon, Tiphaine Bustamante, Paco Niquil, Nathalie 2013-09-14 https://doi.org/10.1016/j.pocean.2013.09.002 unknown Zenodo https://zenodo.org/communities/devotes-project https://zenodo.org/communities/eu https://doi.org/10.1016/j.pocean.2013.09.002 oai:zenodo.org:9919 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Progress in Oceanography, 120(205-215), (2013-09-14) Ecopath model Isotopes Trophic levels Comparative studies Validation Ecosystem management North-East Atlantic Bay of Biscay Continental shelf info:eu-repo/semantics/preprint 2013 ftzenodo https://doi.org/10.1016/j.pocean.2013.09.002 2024-07-26T05:01:01Z Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation. Stable isotopes and mass-balanced trophic models are well-known and widely used as approximations to describe the structure of food webs, but their consistency has not been properly established as attempts to compare these methods remain scarce. Model construction is a data-consuming step, meaning independent sets for validation are rare. Trophic linkages in the French continental shelf of the Bay of Biscay food webs were recently investigated using both methodologies. Trophic levels for mono-specific compartments representing small pelagic fish and marine mammals and multi-species functional groups corresponding to demersal fish and cephalopods, derived from modelling, were compared with trophic levels calculated from independent carbon and nitrogen isotope ratios. Estimates of the trophic niche width of those species, or groups of species, were compared between these two approaches as well. A significant and close-to-one positive (, n=16, p <0.0001) correlation was found between trophic levels estimated by Ecopath modelling and those derived from isotopic signatures. Differences between estimates were particularly low for mono-specific compartments. No clear relationship existed between indices of trophic niche width derived from both methods. Given the wide recognition of trophic levels as a useful concept in ecosystem-based fisheries management, propositions were made to further combine these two approaches. Report North East Atlantic Zenodo Progress in Oceanography 120 205 215 |
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Ecopath model Isotopes Trophic levels Comparative studies Validation Ecosystem management North-East Atlantic Bay of Biscay Continental shelf |
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Ecopath model Isotopes Trophic levels Comparative studies Validation Ecosystem management North-East Atlantic Bay of Biscay Continental shelf Lassalle, Géraldine Chouvelon, Tiphaine Bustamante, Paco Niquil, Nathalie An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
topic_facet |
Ecopath model Isotopes Trophic levels Comparative studies Validation Ecosystem management North-East Atlantic Bay of Biscay Continental shelf |
description |
Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation. Stable isotopes and mass-balanced trophic models are well-known and widely used as approximations to describe the structure of food webs, but their consistency has not been properly established as attempts to compare these methods remain scarce. Model construction is a data-consuming step, meaning independent sets for validation are rare. Trophic linkages in the French continental shelf of the Bay of Biscay food webs were recently investigated using both methodologies. Trophic levels for mono-specific compartments representing small pelagic fish and marine mammals and multi-species functional groups corresponding to demersal fish and cephalopods, derived from modelling, were compared with trophic levels calculated from independent carbon and nitrogen isotope ratios. Estimates of the trophic niche width of those species, or groups of species, were compared between these two approaches as well. A significant and close-to-one positive (, n=16, p <0.0001) correlation was found between trophic levels estimated by Ecopath modelling and those derived from isotopic signatures. Differences between estimates were particularly low for mono-specific compartments. No clear relationship existed between indices of trophic niche width derived from both methods. Given the wide recognition of trophic levels as a useful concept in ecosystem-based fisheries management, propositions were made to further combine these two approaches. |
format |
Report |
author |
Lassalle, Géraldine Chouvelon, Tiphaine Bustamante, Paco Niquil, Nathalie |
author_facet |
Lassalle, Géraldine Chouvelon, Tiphaine Bustamante, Paco Niquil, Nathalie |
author_sort |
Lassalle, Géraldine |
title |
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
title_short |
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
title_full |
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
title_fullStr |
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
title_full_unstemmed |
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data |
title_sort |
assessment of the trophic structure of the bay of biscay continental shelf food web: comparing estimates derived from an ecosystem model and isotopic data |
publisher |
Zenodo |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.pocean.2013.09.002 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Progress in Oceanography, 120(205-215), (2013-09-14) |
op_relation |
https://zenodo.org/communities/devotes-project https://zenodo.org/communities/eu https://doi.org/10.1016/j.pocean.2013.09.002 oai:zenodo.org:9919 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1016/j.pocean.2013.09.002 |
container_title |
Progress in Oceanography |
container_volume |
120 |
container_start_page |
205 |
op_container_end_page |
215 |
_version_ |
1810465161753919488 |