Sediment reworking by the burrowing polychaete Hediste diversicolor modulated by environmental and biological factors across the temperate North Atlantic. A tribute to Gaston Desrosiers

• Published in: Journal of Experimental Marine Biology and Ecology
• Main Authors: Gilbert, Franck, Kristensen, Erik, Aller, Robert, Banta, Gary, Archambault, Philippe, Belley, Rénald, Bellucci, Luca, Calder, Lois, Cuny, Philippe, de Montaudouin, Xavier, Eriksson, Susanne, Forster, Stefan, Gillet, Patrick, Godbold, Jasmin, Glud, Ronnie, Gunnarsson, Jonas, Hulth, Stefan, Lindqvist, Stina, Maire, Anthony, Michaud, Emma, Norling, Karl, Renz, Judith, Solan, Martin, Townsend, Michael, Volkenborn, Nils, Widdicombe, Stephen, Stora, Georges
• Other Authors: Laboratoire Ecologie Fonctionnelle et Environnement (LEFE), Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), University of Southern Denmark (SDU), School of Marine and Atmospheric Sciences Stony Brook (SoMAS), Stony Brook University SUNY (SBU), State University of New York (SUNY)-State University of New York (SUNY), Roskilde University, Institut des Sciences de la MER de Rimouski (ISMER), Université du Québec à Rimouski (UQAR), Québec-Océan, Université Laval Québec (ULaval), Istituto di Scienze Marine Bologna (ISMAR), Istituto di Science Marine (ISMAR ), National Research Council of Italy, Scottish Association for Marine Science (SAMS), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Department of Biological and Environmental Sciences Gothenburg, Göteborgs Universitet = University of Gothenburg (GU), University of Rostock, Mer, molécules et santé (MMS UCO), Université Catholique de l'Ouest (UCO)-PRES Université Nantes Angers Le Mans (UNAM), Ocean and Earth Science Southampton, University of Southampton-National Oceanography Centre (NOC), University of Southampton, Nordic Centre of Earth Evolution (NORDCEE), University of Copenhagen = Københavns Universitet (UCPH), Department of Ecology, Environment and Plant Sciences Stockholm, Stockholm University, Department of Chemistry and Molecular Biology Gothenburg, Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), National Institute of Water and Atmosphere Hamilton (NIWA), Alfred Wegener Institute for Polar and Marine Research (AWI), Plymouth Marine Laboratory (PML)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: BioturbationSediment reworking; Hediste diversicolor; Intraspecific variation; Functional effect group; Functional response group; Bioturbation; Sediment reworking; [SDE.BE]Environmental Sciences/Biodiversity and Ecology; [SDV.EE.ECO]Life Sciences [q-bio]/Ecology; environment/Ecosystems; Gaston; North Atlantic
• Online Access: https://hal.science/hal-03233589; https://hal.science/hal-03233589/document; https://hal.science/hal-03233589/file/gilbert_27951.pdf; https://doi.org/10.1016/j.jembe.2021.151588

International audience Particle mixing and irrigation of the seabed by benthic fauna (bioturbation) have major impacts on ecosystem functions such as remineralization of organic matter and sediment-water exchange. As a tribute to Prof. Gaston Desrosiers by the Nereis Park association, eighteen laboratories carried out a collaborative experiment to acquire a global snapshot of particle reworking by the polychaete Hediste diversicolor at 16 sites surrounding the Northern Atlantic. Organisms and soft sediments were collected during May – July at different geographical locations and, using a common laboratory protocol, particulate fluorescent tracers (‘luminophores’) were used to quantify particle transport over a 10-day period. Particle mixing was quantified using the maximum penetration depth of tracers (MPD), particle diffusive coefficients (Db), and non-local transport coefficients (r). Non-local coefficients (reflecting centimeter scale transport steps) ranged from 0.4 to 15 yr−1, and were not correlated across sites with any measured biological (biomass, biovolume) or environmental parameters (temperature, grain size, organic matter). Maximum penetration depths (MPD) averaged ~10.7 cm (6.5–14.5 cm), and were similar to the global average bioturbation depth inferred from short-lived radiochemical tracers. MPD was also not correlated with measures of size (individual biomass), but increased with grain size and decreased with temperature. Biodiffusion (Db) correlated inversely with individual biomass (size) and directly with temperature over the environmental range (Q10 ~ 1.7; 5–21 °C). The transport data were comparable in magnitude to rates reported for localized H. diversicolor populations of similar size, and confirmed some but not all correlations between sediment reworking and biological and environmental variables found in previous studies. The results imply that measures of particle reworking activities of a species from a single location can be generally extrapolated to different populations at similar ...