Effects of multiple environmental drivers on Arctic kelp communities
| Type | : | COM |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2023 |
| Lieu de publication | : | - |
| Titre de la conférence | : | ASLO Aquatic Sciences Meeting 2023 |
| Lieu de la conférence | : | Palma de Mallorca, Spain |
| Année de la conférence | : | 2023 |
| Date de début | : | 04/06/2023 |
| Date de fin | : | 09/06/2023 |
| Titre du proceeding | : | - |
| Editeur de presse | : | - |
| Volume | : | - |
| Fascicule | : | - |
| Pages | : | |
| Auteurs (7) | : | COMEAU Steeve MILLER Cale LEBRUN Anais URRUTTI Pierre ALLIOUANE Samir GATTUSO Jean-pierre GAZEAU Frederic |
| Editeurs scientifiques (0) | : | |
| DOI | : | - |
| URL | : | - |
| Abstract | : | Coastal ecosystems are particularly vulnerable to human activities that cause environmental changes at both global and local scales. This is particularly true in the Arctic, where fast and dramatic environmental changes such as warming, reduced ice cover, permafrost thawing, increased freshwater discharge, and poleward migration of temperate species will all have potential consequences on the benthic communities. Of particular interest is the fate of kelp communities as they are increasingly exposed to these changes. Here, we will present results from laboratory experiments carried out in summer and winter as well as in situ measurements of metabolism. Within the framework of the H2020 project FACE-IT, we performed two large scale mesocosm experiments to assess the response of kelp communities to warming, freshening, and light reduction as well as heat waves. We found that Arctic kelps are tolerant to environmental changes in summer, but that community net primary production might decline in the future mainly due to the reduction of light availability. The response of two key species was also assessed during an experiment carried out in winter, under total darkness. Preliminary results showed a significant increase in metabolism under future winter conditions suggesting that Arctic species might require more energy to survive the future Arctic winter. Finally, community metabolism was assessed in situ along a gradient of environmental conditions found in the Kongsfjorden, Svalbard. Together, our results confirms that the future of Arctic kelp communities is uncertain. While kelps are rather resistant to changing environmental conditions during summer, their capacity to survive a future Arctic winter is questionable. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Comeau S, Miller C, Lebrun A, Urrutti P, Alliouane S, Gattuso J-P, Gazeau F (2023) Effects of multiple environmental drivers on Arctic kelp communities. ASLO Aquatic Sciences Meeting 2023. Palma de Mallorca, Spain 04-09 June 2023
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