Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities
Abstract It is predicted that a diverse array of functional traits in species‐rich assemblages can lead to strong resource partitioning among coexisting species and moderate a wider spectrum of resource use. We compared two benthic communities in an Arctic fjord: a species‐rich community (in an oute...
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crwiley:10.1002/lno.11174 2024-06-23T07:50:13+00:00 Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities Włodarska‐Kowalczuk, Maria Aune, Magnus Michel, Loïc N. Zaborska, Agata Legeżyńska, Joanna Narodowe Centrum Nauki 2019 http://dx.doi.org/10.1002/lno.11174 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11174 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11174 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11174 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 64, issue 5, page 2140-2151 ISSN 0024-3590 1939-5590 journal-article 2019 crwiley https://doi.org/10.1002/lno.11174 2024-05-31T08:13:20Z Abstract It is predicted that a diverse array of functional traits in species‐rich assemblages can lead to strong resource partitioning among coexisting species and moderate a wider spectrum of resource use. We compared two benthic communities in an Arctic fjord: a species‐rich community (in an outer basin) and an impoverished community (in a glacially impacted bay) and explored (1) if high species richness was translated into high functional trait richness and (2) if high taxonomic and functional diversity promoted high trophic diversity in terms of resource use (indicated by isotopic niche measures). We documented higher functional trait richness in the outer basin (computed based on traits describing feeding mode, mobility, food source, body size and life habit), but the area occupied by consumers in the δ 15 N vs. δ 13 C iso‐space (a proxy for total trophic resource use) did not differ between the two sites. A wide array of functional traits used to acquire food may extend the benthic community trophic niche spatially (where and how animals forage) without impacting the isotopic niche breadth (in this system, mostly reflecting “what animals feed on”) due to the relatively homogenous distribution of isotopic characteristics of detritus pool across vertical scales in marine sediments. Moreover, this trend could indicate that a species‐poor community tends to exploit all the available food items, possibly due to the low food availability for primary consumers in a glacially impacted environment. Communities in glacial bays could therefore be particularly sensitive to future changes in glacial inputs and associated organic matter fluxes. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Limnology and Oceanography 64 5 2140 2151 |
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English |
description |
Abstract It is predicted that a diverse array of functional traits in species‐rich assemblages can lead to strong resource partitioning among coexisting species and moderate a wider spectrum of resource use. We compared two benthic communities in an Arctic fjord: a species‐rich community (in an outer basin) and an impoverished community (in a glacially impacted bay) and explored (1) if high species richness was translated into high functional trait richness and (2) if high taxonomic and functional diversity promoted high trophic diversity in terms of resource use (indicated by isotopic niche measures). We documented higher functional trait richness in the outer basin (computed based on traits describing feeding mode, mobility, food source, body size and life habit), but the area occupied by consumers in the δ 15 N vs. δ 13 C iso‐space (a proxy for total trophic resource use) did not differ between the two sites. A wide array of functional traits used to acquire food may extend the benthic community trophic niche spatially (where and how animals forage) without impacting the isotopic niche breadth (in this system, mostly reflecting “what animals feed on”) due to the relatively homogenous distribution of isotopic characteristics of detritus pool across vertical scales in marine sediments. Moreover, this trend could indicate that a species‐poor community tends to exploit all the available food items, possibly due to the low food availability for primary consumers in a glacially impacted environment. Communities in glacial bays could therefore be particularly sensitive to future changes in glacial inputs and associated organic matter fluxes. |
author2 |
Narodowe Centrum Nauki |
format |
Article in Journal/Newspaper |
author |
Włodarska‐Kowalczuk, Maria Aune, Magnus Michel, Loïc N. Zaborska, Agata Legeżyńska, Joanna |
spellingShingle |
Włodarska‐Kowalczuk, Maria Aune, Magnus Michel, Loïc N. Zaborska, Agata Legeżyńska, Joanna Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
author_facet |
Włodarska‐Kowalczuk, Maria Aune, Magnus Michel, Loïc N. Zaborska, Agata Legeżyńska, Joanna |
author_sort |
Włodarska‐Kowalczuk, Maria |
title |
Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
title_short |
Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
title_full |
Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
title_fullStr |
Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
title_full_unstemmed |
Is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? Isotopic niches of Arctic communities |
title_sort |
is the trophic diversity of marine benthic consumers decoupled from taxonomic and functional trait diversity? isotopic niches of arctic communities |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/lno.11174 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11174 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11174 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11174 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Limnology and Oceanography volume 64, issue 5, page 2140-2151 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.11174 |
container_title |
Limnology and Oceanography |
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64 |
container_issue |
5 |
container_start_page |
2140 |
op_container_end_page |
2151 |
_version_ |
1802641094757842944 |