Article (Scientific journals)
Ecology of Bathymodiolus puteoserpentis mussels from the Snake Pit vent field (Mid-Atlantic Ridge).
Veuillot, Alicia; Pradillon, Florence; Michel, Loïc et al.
2024In Marine Environmental Research, 200, p. 106653
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Keywords :
Associated fauna; Benthic ecology; Biodiversity; Condition index; Food webs; Habitat; Hydrothermal activity; Temperature; Temporal variability; Animals; Atlantic Ocean; Bivalvia/physiology; Ecology; Biomass; Environmental Monitoring; Mytilidae/physiology; Hydrothermal Vents; Ecosystem; Benthic ecologies; Mid Atlantic Ridge; Population structures; Sampling units; Bivalvia; Mytilidae; Oceanography; Aquatic Science; Pollution
Abstract :
[en] Along the northern Mid-Atlantic Ridge (nMAR), in habitats under moderate (<10 °C) hydrothermal influence on the Snake Pit vent field (SP), large assemblages dominated by Bathymodiolin mussels remain poorly characterised, contrary to those in warmer habitats dominated by gastropods and alvinocaridid shrimps that were recently described. In this study, we assessed and compared the population structure, biomass, diversity and trophic interactions of two Bathymodiolus puteoserpentis assemblages and their associated fauna at SP. Three sampling units distanced by 30 cm were sampled in 2014 during the BICOSE cruise at the top of the Moose site (''Elan'' site), while few meters further down three others, distanced by ∼1 m were obtained in 2018 during the BICOSE 2 cruise at the edifice's base. We observed a micro-scale heterogeneity between these six sampling units partially explained by temperature variations, proximity to hydrothermal fluids and position on the edifice. Meiofauna dominate or co-dominate most of the sampling units, with higher densities at the base of the edifice. In terms of macrofauna, high abundance of Pseudorimula midatlantica gastropods was observed at the top of the vent edifice, while numerous Ophioctenella acies ophiuroids were found at the base. Contrary to what was expected, the apparent health and abundance of mussels seems to indicate a current climax stage of the community. However, the modification of B. puteoserpentis isotopic signatures, low number of juveniles decreasing over the two years and observations made during several French cruises in the study area raise questions about the fate of the B. puteoserpentis population over time, which remains to be verified in a future sampling campaign.
Research Center/Unit :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Aquatic sciences & oceanology
Environmental sciences & ecology
Zoology
Author, co-author :
Veuillot, Alicia ;  Univ Brest, Ifremer, Unité BEEP, Plouzané, France
Pradillon, Florence;  Univ Brest, Ifremer, Unité BEEP, Plouzané, France
Michel, Loïc  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Systématique et diversité animale
Cathalot, Cécile;  Univ Brest, Ifremer, CNRS, Unité GEOCEAN, Plouzané, France
Cambon, Marie-Anne;  Univ Brest, Ifremer, Unité BEEP, Plouzané, France
Sarrazin, Jozée ;  Univ Brest, Ifremer, Unité BEEP, Plouzané, France. Electronic address: Jozee.Sarrazin@ifremer.fr
Language :
English
Title :
Ecology of Bathymodiolus puteoserpentis mussels from the Snake Pit vent field (Mid-Atlantic Ridge).
Publication date :
September 2024
Journal title :
Marine Environmental Research
ISSN :
0141-1136
Publisher :
Elsevier Ltd, England
Volume :
200
Pages :
106653
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The thesis of the first author has been granted by a fellowship from the Region Bretagne - ARED 2021 and co-supported by the Ifremer REMIMA Project. The project also benefited from BiodivRestore ERA-NET Cofund (GA N\u00B0101003777).We thank the captain of the R/Vs Pourquoi pas ? and their crews for their collaboration in the success of the cruises. We are grateful to Marie-Anne Cambon, chief scientist who supported our sampling program. We are also grateful to the Nautile and ROV Victor6000 pilots for their patience and constant support. We warmly thank the LEP technical team for its valuable help both at sea and in the lab. Five undergraduate students contributed to sorting the fauna, carrying out isotopic and biomass analyses: Erwann Legrand (MsC 2 2014), Anne-Mathilde Brochard (MSc 1 2015), Bruno Labelle (MSc 2, 2015), Liz Loutrage (MSc 1, 2018), Flavie Vasnier (L2, 2022). This research is part of the DEEP REST project that was funded through the 2020\u20132021 Biodiversa and Water JPI joint call for research projects, under the BiodivRestore ERA-NET Cofund (GA N\u00B0101003777), with the EU and the following funding organisations: Agence Nationale de la Recherche (ANR-21-BIRE-0003), France, Ministry of Agriculture, Nature and Food Quality (LNV), Netherlands, Research Foundation \u2013 Flanders (FWO), Belgium, German Federal Ministry of Research (BMBF) through VDI/VDE-IT, Germany, Environmental Protection Agency (EPA), Ireland, Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia (FCT), Portugal, Fundo Regional para a Ci\u00EAncia e Tecnologia (FRCT), Portugal-Azores and State Research Agency (AEI), Spain. This work is also granted by ARED-R\u00E9gion Bretagne 2021 and Ifremer REMIMA Project.We thank the captain of the R/Vs Pourquoi pas ? and their crews for their collaboration in the success of the cruises. We are grateful to Marie-Anne Cambon, chief scientist who supported our sampling program. We are also grateful to the Nautile and ROV Victor6000 pilots for their patience and constant support. We warmly thank the LEP technical team for its valuable help both at sea and in the lab. Five undergraduate students contributed to sorting the fauna, carrying out isotopic and biomass analyses: Erwann Legrand (MsC 2 2014), Anne-Mathilde Brochard (MSc 1 2015), Bruno Labelle (MSc 2, 2015), Liz Loutrage (MSc 1, 2018), Flavie Vasnier (L2, 2022). This research is part of the DEEP REST project that was funded through the 2020-2021 Biodiversa and Water JPI joint call for research projects, under the BiodivRestore ERA-NET Cofund (GA N\u00B0101003777), with the EU and the following funding organisations: Agence Nationale de la Recherche (ANR-21-BIRE-0003), France, Ministry of Agriculture, Nature and Food Quality (LNV), Netherlands, Research Foundation \u2013 Flanders (FWO), Belgium, German Federal Ministry of Research (BMBF) through VDI/VDE-IT, Germany, Environmental Protection Agency (EPA), Ireland, Funda\u00E7\u00E3o para a Ci\u00EAncia e a Tecnologia (FCT), Portugal, Fundo Regional para a Ci\u00EAncia e Tecnologia (FRCT), Portugal-Azores and State Research Agency (AEI), Spain. This work is also granted by ARED-R\u00E9gion Bretagne 2021 and Ifremer REMIMA Project.
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