Integrating Multidisciplinary Observations in Vent Environments (IMOVE): Decadal Progress in Deep-Sea Observatories at Hydrothermal Vents

Type Article
Date 2022-05
Language English
Author(s) Matabos Marjolaine1, Barreyre Thibaut2, Juniper S. Kim3, Cannat Mathilde4, Kelley Deborah5, Alfaro-Lucas Joan Manel6, Chavagnac Valérie7, Colaço Ana8, Escartin Javier9, Escobar Elva10, Fornari Daniel11, Hasenclever Jörg12, Huber Julie A.13, Laes-Huon AgatheORCID1, Lantéri Nadine1, Levin Lisa Ann14, Mihaly Steve3, Mittelstaedt Eric15, Pradillon Florence1, Sarradin Pierre-Marie1, Sarrazin Jozee1, Tomasi Beatrice16, 17, Venkatesan Ramasamy18, Vic Clement19, On Behalf Of Imove Interridge Working Group
Affiliation(s) 1 : Ifremer, Département REM, Plouzané, France
2 : Department of Earth Science and Centre for Deep Sea Research, University of Bergen, Bergen, Norway
3 : Ocean Networks Canada, University of Victoria, Victoria, BC, Canada
4 : Equipe de Géosciences Marines, Université de Paris, Institut de Physique du Globe de Paris, UMR CNRS, Paris, France
5 : School of Oceanography, University of Washington, Seattle, WA, United States
6 : Department of Marine Zoology, Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany
7 : Géosciences Environnement Toulouse CNRS UMR IRD/UPS/CNES, Université de Toulouse, Toulouse, France
8 : Instituto de Investigação em Ciências do Mar - Okeanos, Universidade dos Açores, Horta, Portugal
9 : Laboratoire de Géologie, CNRS, UMR, École Normale Supérieure, PSL University, Paris, France
10 : Universidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Ciudad Universitaria Mexico City, Mexico
11 : Geology and Geophysics Department, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
12 : Institute of Geophysics, Center for Earth System Research and Sustainability, Hamburg University, Hamburg, Germany
13 : Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
14 : Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, United States
15 : Department of Earth and Spatial Sciences, University of Idaho, Moscow, ID, United States
16 : L@BISEN, ISEN Yncréa Ouest, Brest, France
17 : Norwegian Research Center, NORCE, Bergen, Norway
18 : Ocean Observation Systems, National Institute of Ocean Technology, Chennai, India
19 : Univ. Brest, CNRS, IRD, Ifremer, Laboratoire d’Océanographie Physique et Spatiale, Plouzané, France
Source Frontiers In Marine Science (2296-7745) (Frontiers Media SA), 2022-05 , Vol. 9 , P. 866422 (32p.)
DOI 10.3389/fmars.2022.866422
Keyword(s) essential ocean variables (EOVs), essential biological variables (EBVs), mid-ocean ridge (MOR), sensors, seabed platforms, vent fluid dynamics, vent communities dynamics
Abstract

The unique ecosystems and biodiversity associated with mid-ocean ridge (MOR) hydrothermal vent systems contrast sharply with surrounding deep-sea habitats, however both may be increasingly threatened by anthropogenic activity (e.g., mining activities at massive sulphide deposits). Climate change can alter the deep-sea through increased bottom temperatures, loss of oxygen, and modifications to deep water circulation. Despite the potential of these profound impacts, the mechanisms enabling these systems and their ecosystems to persist, function and respond to oceanic, crustal, and anthropogenic forces remain poorly understood. This is due primarily to technological challenges and difficulties in accessing, observing and monitoring the deep-sea. In this context, the development of deep-sea observatories in the 2000s focused on understanding the coupling between sub-surface flow and oceanic and crustal conditions, and how they influence biological processes. Deep-sea observatories provide long-term, multidisciplinary time-series data comprising repeated observations and sampling at temporal resolutions from seconds to decades, through a combination of cabled, wireless, remotely controlled, and autonomous measurement systems. The three existing vent observatories are located on the Juan de Fuca and Mid-Atlantic Ridges (Ocean Observing Initiative, Ocean Networks Canada and the European Multidisciplinary Seafloor and water column Observatory). These observatories promote stewardship by defining effective environmental monitoring including characterizing biological and environmental baseline states, discriminating changes from natural variations versus those from anthropogenic activities, and assessing degradation, resilience and recovery after disturbance. This highlights the potential of observatories as valuable tools for environmental impact assessment (EIA) in the context of climate change and other anthropogenic activities, primarily ocean mining. This paper provides a synthesis on scientific advancements enabled by the three observatories this last decade, and recommendations to support future studies through international collaboration and coordination. The proposed recommendations include: i) establishing common global scientific questions and identification of Essential Ocean Variables (EOVs) specific to MORs, ii) guidance towards the effective use of observatories to support and inform policies that can impact society, iii) strategies for observatory infrastructure development that will help standardize sensors, data formats and capabilities, and iv) future technology needs and common sampling approaches to answer today’s most urgent and timely questions.

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Matabos Marjolaine, Barreyre Thibaut, Juniper S. Kim, Cannat Mathilde, Kelley Deborah, Alfaro-Lucas Joan Manel, Chavagnac Valérie, Colaço Ana, Escartin Javier, Escobar Elva, Fornari Daniel, Hasenclever Jörg, Huber Julie A., Laes-Huon Agathe, Lantéri Nadine, Levin Lisa Ann, Mihaly Steve, Mittelstaedt Eric, Pradillon Florence, Sarradin Pierre-Marie, Sarrazin Jozee, Tomasi Beatrice, Venkatesan Ramasamy, Vic Clement, On Behalf Of Imove Interridge Working Group (2022). Integrating Multidisciplinary Observations in Vent Environments (IMOVE): Decadal Progress in Deep-Sea Observatories at Hydrothermal Vents. Frontiers In Marine Science, 9, 866422 (32p.). Publisher's official version : https://doi.org/10.3389/fmars.2022.866422 , Open Access version : https://archimer.ifremer.fr/doc/00770/88246/