Inter-Research > MEPS > v660 > p19-35  
MEPS
Marine Ecology Progress Series

via Mailchimp

MEPS 660:19-35 (2021)  -  DOI: https://doi.org/10.3354/meps13577

Bi-decadal variability in physico-biogeochemical characteristics of temperate coastal ecosystems: from large-scale to local drivers

Arnaud Lheureux1,*, Nicolas Savoye1, Yolanda Del Amo1, Eric Goberville2, Yann Bozec3, Elsa Breton4, Pascal Conan5, Stéphane L’Helguen6, Laure Mousseau7, Patrick Raimbault8, Peggy Rimelin-Maury9, Laurent Seuront4, Renaud Vuillemin10, Jocelyne Caparros5, Thierry Cariou11, Marie-Ange Cordier1,12, Anne-Marie Corre7, Laurence Costes1, Olivier Crispi5, Muriel Crouvoisier4, Hortense de Lary de Latour7, Hervé Derriennic12, Jérémy Devesa6, Maïa Durozier7, Sophie Ferreira13, Nicole Garcia8, Emilie Grossteffan9, Aurore Gueux5, Michel Lafont8, Véronique Lagadec8, Eric Lecuyer4, Cédric Leroux11, Eric Macé3, Eric Maria10, Line Mornet1, Antoine Nowaczyk1, Michel Parra1, Franck Petit7, Valérie David1

1Univ. Bordeaux, CNRS, UMR 5805 EPOC, Station Marine d’Arcachon, 33120 Arcachon, France
2Unité Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum National d’Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, CNRS, IRD, 75231 Paris Cedex 05, France
3Sorbonne Université, UPMC Univ. Paris 06, CNRS, UMR 7144 AD2M, Station Biologique de Roscoff, 29680 Roscoff, France
4Univ. Littoral Côte d’Opale, Univ. Lille, CNRS, UMR 8187 LOG, 62930 Wimereux, France
5Sorbonne Université, UPMC Univ. Paris 06, CNRS, UMR7621 LOMIC, Observatoire Océanologique, 66650 Banyuls-sur-Mer, France
6Univ. de Bretagne Occidentale, CNRS, IRD, IFREMER, IUEM, UMR 6539 LEMAR, rue Dumont d’Urville, 29280 Plouzané, France
7Sorbonne Université, UPMC Univ. Paris 06, CNRS, UMR 7093 LOV, Observatoire Océanologique, 06230 Villefranche-sur-Mer, France
8Aix-Marseille Université, Univ. de Toulon, CNRS, INSU, IRD, UM 110 MIO, 163 Avenue de Luminy, 13288 Marseille, France
9Univ. de Bretagne Occidentale, OSU UMS 3113 IUEM, rue Dumont d’Urville, 29280 Plouzané, France
10Sorbonne Université, UPMC Univ. Paris 06, CNRS, FR3724, Observatoire Océanologique de Banyuls-sur-Mer, Avenue Pierre Fabre, 66650 Banyuls-sur-Mer, France
11Sorbonne Université, UPMC Univ. Paris 06, CNRS, FR2424, Station Biologique de Roscoff, 29680 Roscoff, France
12Univ. Bordeaux, CNRS, UMR 5805 EPOC, Allée Geoffroy Saint-Hilaire, 33600 Pessac, France
13Univ. Bordeaux, CNRS, OASU, UMS 2567 POREA, Allée Geoffroy Saint-Hilaire, 33600 Pessac, France
*Corresponding author:

ABSTRACT: Coastal marine ecosystems, which play a crucial role in the biogeochemical and ecological functioning of the Earth, are highly sensitive to the combined effects of climate and human activities. Because of their location, coastal ecosystems are directly influenced by human activities, but it remains challenging to assess the spatial and temporal scales at which climate influences coastal ecosystems. We monitored 12 sampling stations, distributed in 8 ecosystems in France, over 2 decades for physico-biogeochemical parameters (temperature, salinity, concentrations of dissolved oxygen, nutrients and particulate material). The study encompasses a large diversity of temperate coastal ecosystems with respect to e.g. geomorphology, trophic status, tidal regime, river influence and turbidity. Time-series analysis coupled with standardised 3-mode principal component analyses, partial triadic analyses and correlations were used to assess bi-decadal variability and ecosystem trajectories, and to identify large-scale, regional and local drivers. Our results highlighted 2 abrupt changes in 2001 and 2005. The bi-decadal changes were related to changes in large-scale and regional climate, detected through proxies of temperature and atmospheric circulation, as well as through river discharge. Ecosystem trajectories tended to move towards an increase in temperature and salinity, and/or a decrease in chlorophyll a, nutrients and particulate matter. However, the magnitude of change, the year-to-year variability and the sensitivity to the 2001 and 2005 changes varied among the ecosystems. This study highlights the need for establishing long-term time series and combining data sets as well as undertaking multi-ecosystem and local studies to better understand the long-term variability of coastal ecosystems and its associated drivers.


KEY WORDS: Long-term changes · Coastal ecosystems · Biogeochemistry · Climate change · Multivariate analysis · Monitoring programme


Full text in pdf format
Supplementary material 
Cite this article as: Lheureux A, Savoye N, Del Amo Y, Goberville E and others (2021) Bi-decadal variability in physico-biogeochemical characteristics of temperate coastal ecosystems: from large-scale to local drivers. Mar Ecol Prog Ser 660:19-35. https://doi.org/10.3354/meps13577

Export citation
Mail this link - Contents Mailing Lists - RSS
Facebook - - linkedIn