Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale?
editorial reviewed Climate change is expected to have many adverse biological effects in Antarctica, including perturbation of feeding habits and energy fluxes. Food availability and predator/prey interactions are considered major factors dictating survival of Antarctic fauna, and foraging strategie...
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ftorbi:oai:orbi.ulg.ac.be:2268/304780 2024-04-21T07:49:45+00:00 Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? Michel, Loïc Danis, Bruno De Ridder, Chantal Dogniez, Martin Dubois, Philippe Eleaume, Marc Gallut, Cyril Le Bourg, Baptiste Saucède, Thomas Voisin, Anthony Lepoint, Gilles MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège BE FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2023-05 https://orbi.uliege.be/handle/2268/304780 https://orbi.uliege.be/bitstream/2268/304780/1/Michel_workshopgent.pdf en eng https://orbi.uliege.be/handle/2268/304780 info:hdl:2268/304780 https://orbi.uliege.be/bitstream/2268/304780/1/Michel_workshopgent.pdf open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Workshop on Species Interactions in the Southern Ocean, Gent, Belgium [BE], 30-31/05/2023 stable isotopes food web global change sea ice antarctica echinoderm sea urchin sea star trophic plasticity adaptation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Zoology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie Zoologie conference paper not in proceedings http://purl.org/coar/resource_type/c_18cp info:eu-repo/semantics/conferencePaper editorial reviewed 2023 ftorbi 2024-03-27T14:58:25Z editorial reviewed Climate change is expected to have many adverse biological effects in Antarctica, including perturbation of feeding habits and energy fluxes. Food availability and predator/prey interactions are considered major factors dictating survival of Antarctic fauna, and foraging strategies have been shown to drive population evolution in some taxa. Whenever facing environmental changes, all organisms are expected to have some intrinsic ability to adapt. At shorter than evolutionary timescales, ecological plasticity in general, and trophic plasticity (i.e. the ability to display different feeding habits according to variation in environmental conditions) in particular, could be important adaptive mechanisms. There is increasing evidence that many key Antarctic benthos members show a high degree of trophic plasticity. It could prove to be a beneficial trait, allowing those species to shift their diet and match the new environments they will face in the future. However, diet shifts may also have detrimental aspects, such as feeding on items whose quality or nature are not optimal for the consumers. Ultimately, trophic plasticity could have important consequences at wider biological organisation levels, as it could modulate secondary production by those taxa, as well as the way they interact with other taxa through trophic relationships. Assessing trophic plasticity in Antarctic zoobenthos is therefore a promising avenue to shed light on how environmental change can shape organisms’ roles in ecosystem functioning. In this talk, we will focus on how trophic tracers (stables isotope ratios of C, N and S) can help delineating feeding plasticity in selected echinoderm (sea star and sea urchin taxa) in both Antarctic and Subantarctic coastal marine ecosystems. Conference Object Antarc* Antarctic Antarctica Sea ice University of Liège: ORBi (Open Repository and Bibliography) |
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Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
stable isotopes food web global change sea ice antarctica echinoderm sea urchin sea star trophic plasticity adaptation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Zoology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie Zoologie |
spellingShingle |
stable isotopes food web global change sea ice antarctica echinoderm sea urchin sea star trophic plasticity adaptation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Zoology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie Zoologie Michel, Loïc Danis, Bruno De Ridder, Chantal Dogniez, Martin Dubois, Philippe Eleaume, Marc Gallut, Cyril Le Bourg, Baptiste Saucède, Thomas Voisin, Anthony Lepoint, Gilles Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
topic_facet |
stable isotopes food web global change sea ice antarctica echinoderm sea urchin sea star trophic plasticity adaptation Life sciences Environmental sciences & ecology Aquatic sciences & oceanology Zoology Sciences du vivant Sciences de l’environnement & écologie Sciences aquatiques & océanologie Zoologie |
description |
editorial reviewed Climate change is expected to have many adverse biological effects in Antarctica, including perturbation of feeding habits and energy fluxes. Food availability and predator/prey interactions are considered major factors dictating survival of Antarctic fauna, and foraging strategies have been shown to drive population evolution in some taxa. Whenever facing environmental changes, all organisms are expected to have some intrinsic ability to adapt. At shorter than evolutionary timescales, ecological plasticity in general, and trophic plasticity (i.e. the ability to display different feeding habits according to variation in environmental conditions) in particular, could be important adaptive mechanisms. There is increasing evidence that many key Antarctic benthos members show a high degree of trophic plasticity. It could prove to be a beneficial trait, allowing those species to shift their diet and match the new environments they will face in the future. However, diet shifts may also have detrimental aspects, such as feeding on items whose quality or nature are not optimal for the consumers. Ultimately, trophic plasticity could have important consequences at wider biological organisation levels, as it could modulate secondary production by those taxa, as well as the way they interact with other taxa through trophic relationships. Assessing trophic plasticity in Antarctic zoobenthos is therefore a promising avenue to shed light on how environmental change can shape organisms’ roles in ecosystem functioning. In this talk, we will focus on how trophic tracers (stables isotope ratios of C, N and S) can help delineating feeding plasticity in selected echinoderm (sea star and sea urchin taxa) in both Antarctic and Subantarctic coastal marine ecosystems. |
author2 |
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège BE FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Conference Object |
author |
Michel, Loïc Danis, Bruno De Ridder, Chantal Dogniez, Martin Dubois, Philippe Eleaume, Marc Gallut, Cyril Le Bourg, Baptiste Saucède, Thomas Voisin, Anthony Lepoint, Gilles |
author_facet |
Michel, Loïc Danis, Bruno De Ridder, Chantal Dogniez, Martin Dubois, Philippe Eleaume, Marc Gallut, Cyril Le Bourg, Baptiste Saucède, Thomas Voisin, Anthony Lepoint, Gilles |
author_sort |
Michel, Loïc |
title |
Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
title_short |
Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
title_full |
Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
title_fullStr |
Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
title_full_unstemmed |
Trophic plasticity in Antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
title_sort |
trophic plasticity in antarctic echinoderms: an adaptive trait with implications at ecosystem wide scale? |
publishDate |
2023 |
url |
https://orbi.uliege.be/handle/2268/304780 https://orbi.uliege.be/bitstream/2268/304780/1/Michel_workshopgent.pdf |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Workshop on Species Interactions in the Southern Ocean, Gent, Belgium [BE], 30-31/05/2023 |
op_relation |
https://orbi.uliege.be/handle/2268/304780 info:hdl:2268/304780 https://orbi.uliege.be/bitstream/2268/304780/1/Michel_workshopgent.pdf |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1796933756341190656 |