Articles | Volume 17, issue 9
https://doi.org/10.5194/essd-17-4737-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-17-4737-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
25 Sep 2025
Data description paper |
| 25 Sep 2025
| 25 Sep 2025
Long-term monitoring of hydrological dynamics and phytoplankton biomass indicator in three shellfish ecosystems of the English channel (2000–2024)
Synergie Mer & Littoral, Centre Expérimental, Zone conchylicole, 33 rue du Banc du Nord, 50560 Blainville-Sur-Mer, France
Stéphanie Petinay
Synergie Mer & Littoral, Centre Expérimental, Zone conchylicole, 33 rue du Banc du Nord, 50560 Blainville-Sur-Mer, France
Jean-Louis Blin
Synergie Mer & Littoral, Centre Expérimental, Zone conchylicole, 33 rue du Banc du Nord, 50560 Blainville-Sur-Mer, France
Cited articles
Aminot, A. and Chaussepied, M.: Manuel des analyses chimiques en milieu marin, Ifremer, ISBN 978-2-902721-10-8, 1983.
Aminot, A. and Kérouel, R.: Hydrologie des écosystèmes marins: paramètres et analyses, Éditions Quae, ISBN 978-2-84433-133-5, 2004.
Auber, A., Gohin, F., Goascoz, N., and Schlaich, I.: Decline of cold-water fish species in the Bay of Somme (English Channel, France) in response to ocean warming, Estuar. Coast. Shelf Sci., 189, 189–202, https://doi.org/10.1016/j.ecss.2017.03.004, 2017.
Barbier, E. B., Hacker, S. D., Kennedy, C., Koch, E. W., Stier, A. C., and Silliman, B. R.: The value of estuarine and coastal ecosystem services, Ecol. Monogr., 81, 169–193, https://doi.org/10.1890/10-1510.1, 2011.
Bates, N. R.: Interannual variability of the oceanic CO2 sink in the subtropical gyre of the North Atlantic Ocean over the last 2 decades, J. Geophys. Res.-Oceans, 112, C09013, https://doi.org/10.1029/2006JC003759, 2007.
Beaugrand, G.: Monitoring marine plankton ecosystems. I: Description of an ecosystem approach based on plankton indicators, Mar. Ecol.-Prog. Ser., 269, 69–81, https://doi.org/10.3354/meps269069, 2004.
Bendschneider, K. and Robinson, R. J.: A new spectrophotometric method for the determination of nitrite in sea water, J. Mar. Res., 11, 87–96, 1952.
Bernard, C. Y., Laruelle, G. G., Slomp, C. P., and Heinze, C.: Impact of changes in river fluxes of silica on the global marine silicon cycle: a model comparison, Biogeosciences, 7, 441–453, https://doi.org/10.5194/bg-7-441-2010, 2010.
Bernard, C. Y., Durr, H. H., Heinze, C., Segschneider, J., and Meier-Reimer, E.: Contribution of riverine nutrients to the silicon biogeochemistry in the global ocean – a model study, Biogeosciences, 8, 551–564, https://doi.org/10.5194/bg-8-551-2011, 2011.
Brzezinski, M. A.: The Si : C : N ratio of marine diatoms: interspecific variability and the effect of some environmental variables, J. Phycol., 21, 347–357, https://doi.org/10.1111/j.0022-3646.1985.00347.x, 1985.
Cadée, G. C. and Hegeman, J.: Phytoplankton in the Marsdiep at the end of the 20th century: 30 years monitoring biomass, primary production, and Phaeocystis blooms, J. Sea Res., 48, 97–110, https://doi.org/10.1016/S1385-1101(02)00161-2, 2002.
Caldeira, K. and Wickett, M. E.: Anthropogenic carbon and ocean pH, Nature, 425, 365, https://doi.org/10.1038/425365a, 2003.
Chen, S. and Hu, C.: Environmental controls of surface water pCO2 in different coastal environments: observations from marine buoys, Cont. Shelf Res., 183, 73–86, https://doi.org/10.1016/j.csr.2019.05.007, 2019.
Chenel, J.: Étude du compartiment “chimie” du projet CarUtah, MS thesis, SMEL – Synergie Mer et Littoral, https://www.smel.fr/download/etude-du-compartiment-chimie-du-projet-carutah-stage-m2-julie-chenel/ (last access: 16 September 2025), 2025.
Claussen, U., Zevenboom, W., Brockmann, U., Topcu, D., and Bot, P.: Assessment of the eutrophication status of transitional, coastal and marine waters within OSPAR, Hydrobiologia, 629, 49–58, https://doi.org/10.1007/s10750-009-9763-3, 2009.
Cloern, J. E.: Our evolving conceptual model of the coastal eutrophication problem, Mar. Ecol.-Prog. Ser., 210, 223–253, https://doi.org/10.3354/meps210223, 2001.
Collet, L., Ruelland, D., Borrell-Estupina, V., and Servat, E.: Variabilité climatique et des activités humaines sur les ressources en eau d'un bassin Méditerranéen de méso-échelle, Hydrolog. Sci. J., 59, 1457–1469, https://doi.org/10.1080/02626667.2013.842073, 2014.
Cornes, R. C., Tinker, J., Hermanson, L., Oltmanns, M., Hunter, W. R., Lloyd-Hartley, H., Kent, E. C., Rabe, B., and Renshaw, R.: The impacts of climate change on sea temperature around the UK and Ireland, Mar. Climate Change Impacts Partnership, 18 pp., https://nora.nerc.ac.uk/id/eprint/534103/ (last access: 16 September 2025), 2023.
Devreker, D. and Lefebvre, A.: TTAinterfaceTrendAnalysis: a R GUI for routine temporal trend analysis and diagnostics, J. Oceanogr. Res. Data, 6, 1–18, 2014 (code available at: https://cran.r-project.org/web/packages/TTAinterfaceTrendAnalysis/index.html, last access: 16 September 2025).
Diaz, R. J.: Overview of hypoxia around the world, J. Environ. Qual., 30, 275–281, https://doi.org/10.2134/jeq2001.302275x, 2001.
Doney, S. C., Busch, D. S., Cooley, S. R., and Kroeker, K. J.: The impacts of ocean acidification on marine ecosystems and reliant human communities, Annu. Rev. Environ. Resour., 45, 83–112, https://doi.org/10.1146/annurev-environ-012320-083019, 2020.
Dudgeon, D., Arthington, A. H., Gessner, M. O., Kawabata, Z. I., Knowler, D. J., Lévêque, C., Naiman, R. J., Prieur-Richard, A. H., Soto, D., Stiassny, M. L. J., and Sullivan, C. A. Freshwater biodiversity: importance, threats, status and conservation challenges, Biol. Rev., 81, 163–182, https://doi.org/10.1017/S1464793105006950, 2006.
Edwards, M., Beaugrand, G., Helaouët, P., Alheit, J., and Coombs, S.: Marine ecosystem response to the Atlantic Multidecadal Oscillation, PLOS ONE, 8, e57212, https://doi.org/10.1371/journal.pone.0057212, 2013.
Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C.: Impacts of ocean acidification on marine fauna and ecosystem processes, ICES J. Mar. Sci., 65, 414–432, https://doi.org/10.1093/icesjms/fsn048, 2008.
Filgueira, R., Guyondet, T., Comeau, L. A., and Tremblay, R.: Bivalve aquaculture–environment interactions in the context of climate change, Global Change Biol., 22, 3901–3913, https://doi.org/10.1111/gcb.13346, 2016.
Garnier, J., Riou, P., Le Gendre, R., Ramarson, A., Billen, G., Cugier, P., Schapira, M., Thery, S., Thieu, V., and Menesguen, A.: Managing the agri-food system of watersheds to combat coastal eutrophication: a land-to-sea modelling approach to the French Coastal English Channel, Geosciences, 9, 441, https://doi.org/10.3390/geosciences9100441, 2019.
Giuntoli, I., Maugis, P., and Renard, B.: Évolutions observées dans les débits des rivières en France: sélection d'un réseau de référence et analyse de l'évolution temporelle des régimes des 40 dernières années, Collection “Comprendre pour agir”, Onema, p. 8, https://hal.science/hal-02936887v1 (last access: 16 September 2025), 2012.
Goberville, E., Beaugrand, G., Sautour, B., Tréguer, P., and Somelit team: Climate-driven changes in coastal marine systems of western Europe, Mar. Ecol.-Prog. Ser., 408, 129–147, https://doi.org/10.3354/meps08564, 2010.
Gohin, F., Van der Zande, D., Tilstone, G., Eleveld, M. A., Lefebvre, A., Andrieux-Loyer, F., Blauw, A. N., Bryère, P., Devreker, D., Garnesson, P., Hernandez Farinas, T., Lamaury, Y., Lampert, L., Lavigne, H., Menet-Nedelec, F., Pardo, S., and Saulquin, B.: Twenty years of satellite and in situ observations of surface chlorophyll-a from the northern Bay of Biscay to the eastern English Channel: is the water quality improving?, Remote Sens. Environ., 233, 111343, https://doi.org/10.1016/j.rse.2019.111343, 2019.
Grangere, K.: Simulation de l'influence des apports des bassins versants sur les concessions ostréicoles de la Baie des Veys (Baie de Seine Occidentale), Post-graduate thesis, DEA) University of Caen, https://archimer.ifremer.fr/doc/00449/56100/ (last access: 16 September 2025), 2004.
Guinaldo, T., Voldoire, A., Waldman, R., Saux Picart, S., and Roquet, H.: Response of the sea surface temperature to heatwaves during the France 2022 meteorological summer, Ocean Sci., 19, 629–647, https://doi.org/10.5194/os-19-629-2023, 2023.
Halpern, B. S., Selkoe, K. A., Micheli, F., and Kappel, C. V.: Evaluating and ranking the vulnerability of global marine ecosystems to anthropogenic threats, Conserv. Biol., 21, 1301–1315, https://doi.org/10.1111/j.1523-1739.2007.00752.x, 2007.
Heisler, J., Glibert, P. M., Burkholder, J. M., Anderson, D. M., Cochlan, W., Dennison, W. C., Dortch, Q., Gobler, C. J., Heil, C. A., Humphries, E., Lewitus, A., Magnien, R., Marshall, H. G., Sellner, K., Stockwell, D. A., Stoecker, D. K., and Suddleson, M.: Eutrophication and harmful algal blooms: a scientific consensus, Harmful Algae, 8, 3–13, https://doi.org/10.1016/j.hal.2008.08.006, 2008.
Hubert, Z., Louchart, A. P., Robache, K., Epinoux, A., Gallot, C., Cornille, V., Crouvoisier, M., Monchy, S., and Artigas, L. F.: Decadal changes in phytoplankton functional composition in the Eastern English Channel: possible upcoming major effects of climate change, Ocean Sci., 21, 679–700, https://doi.org/10.5194/os-21-679-2025, 2025.
Hutchins, D. A., Mulholland, M. R., and Fu, F.: Nutrient cycles and marine microbes in a CO2-enriched ocean, Oceanography, 22, 128–145, https://doi.org/10.5670/oceanog.2009.103, 2009.
Ittekkot, V., Unger, D., Humborg, C., and An, N. T. (Eds.): The silicon cycle: human perturbations and impacts on aquatic systems, in: SCOPE Series Vol. 66, Island Press, 296 pp., ISBN 978-1597261159, 2006.
Kapsenberg, L., Alliouane, S., Gazeau, F., Mousseau, L., and Gattuso, J.-P.: Coastal ocean acidification and increasing total alkalinity in the northwestern Mediterranean Sea, Ocean Sci., 13, 411–426, https://doi.org/10.5194/os-13-411-2017, 2017.
Kassem, H., Amos, C. L., and Thompson, C. E. L.: Sea surface temperature trends in the coastal zone of southern England, J. Coast. Res., 39, 18–31, https://doi.org/10.2112/JCOASTRES-D-22-00056.1, 2023.
Kerr, R. A.: A North Atlantic climate pacemaker for the centuries, Science, 288, 1984–1985, https://doi.org/10.1126/science.288.5473.1984, 2000.
Kirby, R., Beaugrand, G., and Lindley, J. A.: Synergistic effects of climate and fishing in a marine ecosystem, Ecosystems, 12, 548–561, https://doi.org/10.1007/s10021-009-9241-9, 2009.
Laruelle, G. G., Roubeix, V., Sferratore, A., Brodherr, B., and Ciuffa, D.: Anthropogenic perturbations of the silicon cycle at the global scale: Key role of the land-ocean transition, Global Biogeochem. Cy., 23, GB4031, https://doi.org/10.1029/2008GB003267, 2009.
Lauvset, S. K., Key, R. M., Olsen, A., van Heuven, S., Velo, A., Lin, X., Schirnick, C., Kozyr, A., Tanhua, T., Hoppema, M., Jutterström, S., Steinfeldt, R., Jeansson, E., Ishii, M., Pérez, F. F., Suzuki, T., and Watelet, S.: A new global interior ocean mapped climatology: The 1×1 GLODAP version 2, Earth Syst. Sci. Data, 8, 325–340, https://doi.org/10.5194/essd-8-325-2016, 2016.
Lefebvre, S., Marín Leal, J. C., Dubois, S., Orvain, F., Blin, J. L., Bataillé, M. P., Ourry, A., and Galois, R.: Seasonal dynamics of trophic relationships among co-occurring suspension feeders in two shellfish culture dominated ecosystems, Estuar. Coast. Shelf Sci., 82, 415–425, https://doi.org/10.1016/j.ecss.2009.02.026, 2009a.
Lefebvre, S., Harma, C., and Blin, J. L.: Trophic typology of coastal ecosystems based on δ13C and δ15N ratios in an opportunistic suspension feeder, Mar. Ecol.-Prog. Ser., 390, 27–37, https://doi.org/10.3354/meps08170, 2009b.
Lefebvre, A., Guiselin, N., Barbet, F., and Artigas, L. F.: Long-term hydrological and phytoplankton monitoring (1992–2007) of three potentially eutrophicated systems in the eastern English Channel and the southern bight of the North Sea, ICES J. Mar. Sci., 68, 2029–2043, https://doi.org/10.1093/icesjms/fsr151, 2011.
Leruste, A., Pasqualini, V., Garrido, M., Malet, N., De Wit, R., and Bec, B.: Physiological and behavioral responses of phytoplankton communities to nutrient availability in a disturbed Mediterranean coastal lagoon, Estuar. Coast. Shelf Sci., 219, 176–188, https://doi.org/10.1016/j.ecss.2019.01.009, 2019.
Loebl, M., Colijn, F., van Beusekom, J. E. E., Baretta-Bekker, J. G., Lancelot, C., Philippart, C. J. M., Rousseau, V., and Wiltshire, K. H.: Recent patterns in potential limitation along the Northwest European continental coast, J. Sea Res., 61, 34–43, https://doi.org/10.1016/j.seares.2008.05.002, 2009.
Maltby, K. M., Rutterford, L. A., Tinker, J., Genner, M. J., and Simpson, S. D.: Projected impacts of warming seas on commercially fished species at a biogeographic boundary of the European continental shelf, J. Appl. Ecol., 57, 2222–2233, doi10.1111/1365-2664.13682, 2020.
Martin, G. D., Vijay, J. G., Laluraj, C. M., Madhu, N. V., Joseph, T., Nair, M., Gupta, G. V. M., and Balachandran, K. K.: Fresh water influence on nutrient stoichiometry in a tropical estuary, southwest coast of India, Appl. Ecol. Environ. Res., 6, 57–64, https://doi.org/10.15666/aeer/0601_057064, 2008.
McEvoy, A. J., Atkinson, A., Airs, R. L., Brittain, R., Brown, I., Fileman, E. S., Findlay, H. S., McNeil, C. L., Ostle, C., Smyth, T. K., Somerfield, P. J., Tait, K., Tarran, G. A., Thomas, S., Widdicombe, C. E., Woodward, E., Beesley, A., Conway, D. V. P., Fishwick, J., and Widdicombe, S.: The Western Channel Observatory: A century of physical, chemical and biological data compiled from pelagic and benthic habitats in the western English Channel, Earth Syst. Sci. Data, 15, 5701–5737, https://doi.org/10.5194/essd-15-5701-2023, 2023.
Ménesguen, A., Dussauze, M., Dumas, F., Thouvenin, B., Garnier, V., Lecornu, F., and Répécaud, M.: Ecological model of the Bay of Biscay and English Channel shelf for environmental status assessment. Part 1: Nutrients, phytoplankton and oxygen, Ocean Model., 133, 56–78, https://doi.org/10.1016/j.ocemod.2018.11.005, 2019.
Meybeck, M., Lestel, L., Carré, C., Bouleau, G., Garnier, J., and Mouchel, J. M.: Trajectories of river chemical quality issues over the longue durée: The Seine River (1900s–2010), Environ. Sci. Pollut. R., 25, 23468–23484, https://doi.org/10.1007/s11356-016-7124-0, 2018.
Mimeau, L., Künne, A., Devers, A., Branger, F., Kralisch, S., Lauvernet, C., Vidal, J.-P., Bonada, N., Csabai, Z., Mykrä, H., Pařil, P., Polović, L., and Datry, T.: Projections of streamflow intermittence under climate change in European drying river networks, Hydrol. Earth Syst. Sci., 29, 1615–1636, https://doi.org/10.5194/hess-29-1615-2025, 2025.
Mullin, J. and Riley, J. P.: The colorimetric determination of silicate with special reference to sea and natural waters, Anal. Chim. Ac., 12, 162–176, https://doi.org/10.1016/S0003-2670(00)87825-3, 1955.
Murphy, J. and Riley, J. P.: A modified single solution method for the determination of phosphate in natural waters, Anal. Chim. Ac., 27, 31–36, https://doi.org/10.1016/S0003-2670(00)88444-5, 1962.
Nelson, D. M. and Gordon, L. I.: Production and pelagic dissolution of biogenic silica in the Southern Ocean, Geochim. Cosmochim. Ac., 46, 491–501, https://doi.org/10.1016/0016-7037(82)90153-3, 1982.
Neven, C. J., Giraldo, C., Girardin, R., Lefebvre, A., Lefebvre, S., Loots, C., Meunier, C. L., and Marchal, P.: Winter distribution of zooplankton and ichthyoplankton assemblages in the North Sea and the English Channel, PLoS ONE, 19, e0308803, https://doi.org/10.1371/journal.pone.0308803, 2024.
Ólafsson, J., Ólafsdóttir, S. R., Benoit-Cattin, A., Danielsen, M., Arnarson, T. S., and Takahashi, T.: Rate of Iceland Sea acidification from time series measurements, Biogeosciences, 6, 2661–2668, https://doi.org/10.5194/bg-6-2661-2009, 2009.
Ovaskainen, O., Weigel, B., Potyutko, O., and Buyvolov, Y.: Long-term shifts in water quality show scale-dependent bioindicator responses across Russia – Insights from 40 year-long bioindicator monitoring program, Ecol. Indic., 98, 476–482, https://doi.org/10.1016/j.ecolind.2018.11.027, 2019.
R Core Team: R: A language and environment for statistical computing, R Foundation for Statistical Computing, Vienna, Austria, https://www.R-project.org/ (last access: 16 September 2025), 2022.
Redfield, A. C., Ketchum, B. H., and Richards, F. A.: The influence of organisms on composition of seawater, in: The Sea, vol. 2, edited by: Hill, M. N., Interscience, New York, 26–77, ISBN 978-0674017283, 1963.
Reid, P. C., Edwards, M., Beaugrand, G., Skogen, M., and Stevens, D.: Periodic changes in the zooplankton of the North Sea during the twentieth century linked to oceanic inflow, Fish. Oceanogr., 12, 260–269, https://doi.org/10.1046/j.1365-2419.2003.00252.x, 2003.
Reimer, J. J., Cai, W.-J., Xue, L., Vargas, R., Noakes, S., Hu, X., Signorini, S. R., Mathis, J. T., Feely, R. A., Sutton, A. J., Sabine, C., Musielewicz, S., Chen, B., and Wanninkhof, R.: Time series pCO2 at a coastal mooring: Internal consistency, seasonal cycles, and interannual variability, Cont. Shelf Res., 145, 95–108, https://doi.org/10.1016/j.csr.2017.06.022, 2017.
Richardson, A. J. and Schoeman, D. S.: Climate impact on plankton ecosystems in the Northeast Atlantic, Science, 305, 1609–1612, https://doi.org/10.1126/science.1100958, 2004.
Riebesell, U., Schulz, K. G., Bellerby, R. G. J., Botros, M., Fritsche, P., Meyerhöfer, M., Neil, C., Nondal, G., Wohlers, J., and Zöllner, E.: Enhanced biological carbon consumption in a high CO2 ocean, Nature, 450, 545–548, https://doi.org/10.1038/nature06267, 2007.
Romero, E., Le Gendre, R., Garnier, J., Billen, G., Fisson, C., Silvestre, M., and Riou, P.: Long-term water quality in the lower Seine: Lessons learned over 4 decades of monitoring, Environ. Sci. Policy, 141–154, https://doi.org/10.1016/j.envsci.2016.01.016, 2016.
Romero, E., Garnier, J., Billen, G., Ramarson, A., Riou, P., and Le Gendre, R.: Modeling the biogeochemical functioning of the Seine estuary and its coastal zone: Export, retention, and transformations, Limnol. Oceanogr., 64, 895–912, https://doi.org/10.1002/lno.11082, 2019.
Sala, O. E., Chapin, F. S., Armesto, J. J., Berlow, E., Bloomfield, J., Dirzo, R., Huber-Sanwald, E., Huenneke, L. F., Jackson, R. B., Kinzig, A., Leemans, R., Lodge, D. M., Mooney, H. A., Oesterheld, M., Poff, N. L. R., Sykes, M. T., Walker, B. H., Walker, M., and Wall, D. H.: Global biodiversity scenarios for the year 2100, Science, 287, 1770–1774, https://doi.org/10.1126/science.287.5459.1770, 2000.
Santana-Casiano, J. M., González-Dávila, M., Rueda, M. J., Llinás, O., and González-Dávila, E. F.: The interannual variability of oceanic CO2 parameters in the northeast Atlantic subtropical gyre at the ESTOC site, Global Biogeochem. Cy., 21, GB1015, https://doi.org/10.1029/2006GB002788, 2007.
Sarmiento, J. L. and Gruber, N.: Ocean biogeochemical dynamics, Princeton University Press, ISBN 978-0691017075, 2006.
Schulz, K. G., Riebesell, U., Bellerby, R. G. J., Biswas, H., Meyerhöfer, M., Müller, M. N., Egge, J. K., Nejstgaard, J. C., Neil, C., Wohlers, J., and Zöllner, E.: Build-up and decline of organic matter during PeECE III, Biogeosciences, 5, 707–718, https://doi.org/10.5194/bg-5-707-2008, 2008.
Selman, M., Greenhalgh, S., Diaz, R., and Sugg, Z.: Eutrophication and hypoxia in coastal areas: A global assessment of the state of knowledge, World Resources Institute, ISBN 978-1-56973-681-4, 2008.
Shen, Z. L.: Historical changes in nutrient structure and its influences on phytoplankton composition in Jiaozhou Bay, Estuar. Coast. Shelf Sci., 52, 211–224, https://doi.org/10.1006/ecss.2000.0736, 2001.
Simon, A., Poppeschi, C., Plecha, S., Charria, G., and Russo, A.: Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic, Ocean Sci., 19, 1339–1355, https://doi.org/10.5194/os-19-1339-2023, 2023.
SMEL – Synergie Mer and Littoral: Hydrobiological data from 6 stations of the HYDRONOR Observatory (2000–2024), Zenodo [data set], https://doi.org/10.5281/zenodo.15058835, 2024.
Smith, V. H.: Responses of estuarine and coastal marine phytoplankton to nitrogen and phosphorus enrichment, Limnol. Oceanogr., 51, 377–384, https://doi.org/10.4319/lo.2006.51.1_part_2.0377, 2006.
Sonier, R., Filgueira, R., Guyondet, T., Tremblay, R., Olivier, F., Meziane, T., Starr, M., LeBlanc, A. R., and Comeau, L. A.: Picophytoplankton contribution to Mytilus edulis growth in an intensive culture environment, Mar. Biol., 163, 1–15, 2016.
Strickland, J. and Parsons, T.: A practical handbook of seawater analysis, in: 2nd Edn., Vol. 167, Fisheries Research Board of Canada, ISBN 978-0660115962, 1972.
Tréguer, P. J. and De La Rocha, C. L. The world ocean silica cycle, Annu. Rev. Mar. Sci., 5, 477–501, https://doi.org/10.1146/annurev-marine-121211-172346, 2013.
Vermaat, J. E., McQuatters-Gollop, A., Eleveld, M. A., and Gilbert, A.: Past, present and future nutrient loads of the North Sea: Causes and consequences, Estuar. Coast. Shelf Sci., 80, 53–59, 2008.
Watanabe, K., Kasai, A., Fukuzaki, K., Ueno, M., and Yamashita, Y.: Estuarine circulation-driven entrainment of oceanic nutrients fuels coastal phytoplankton in an open coastal system in Japan, Estuar. Coast. Shelf Sci., 184, 126–137, https://doi.org/10.1016/j.ecss.2016.10.031, 2017.
Yan, X., Thieu, V., and Garnier, J.: Long-term assessment of nutrient budgets for the four reservoirs of the Seine Basin (France), Sci. Total Environ., 778, 1, https://doi.org/10.1016/j.scitotenv.2021.146412, 2021.
Yan, X., Garnier, J., Billen, G., Wang, S., and Thieu, V.: Unravelling nutrient fate and CO2 concentrations in the reservoirs of the Seine Basin using a modelling approach, Water Res., 225, 119135, https://doi.org/10.1016/j.watres.2022.119135, 2022.
Short summary
This study analyzes 24 years of coastal monitoring in Normandy (Blainville-sur-Mer, Saint-Vaast-la-Hougue, Utah Beach), assessing climate change and human impact. Results show rising winter temperatures since 2013, increasing acidification at Blainville-sur-Mer, and nutrient shifts, with high ammonium in the East and declining phosphates. Nutrient limitations vary by coast. Findings emphasize the need for better nutrient management to sustain ecosystems and aquaculture amid environmental change.
This study analyzes 24 years of coastal monitoring in Normandy (Blainville-sur-Mer,...
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