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8. Major shift in the copepod functional community of the southern North Sea and potential environmental drivers.

Author

Deschamps, M M, Boersma, M, Meunier, C L, Kirstein, I V, Wiltshire, K H, and Di Pane, J

Subjects
FISH larvae, FOOD chains, MARINE ecology, LIFE spans, AUTUMN, ECOSYSTEMS, COASTAL ecosystem health
Abstract

Copepods form the bulk of secondary production in marine ecosystems and are a major resource for higher trophic levels. Copepods are highly sensitive to environmental changes as they are ectotherms with a short life span whose metabolism and development depend on abiotic conditions. In turn, changes in their functional structure (i.e. functional trait composition) can have impacts on ecosystems. We examined changes in the copepod functional community in the North Sea over the past five decades, using a trait-based approach. We observed a shift around 1986–1988: the copepod community was initially dominated by larger herbivores, with a long development time, diapause ability, and highest abundances in summer. This community changed abruptly after 1986–1988, to a dominance of smaller carnivore taxa, with shorter development times, less ability to enter diapause, and that display higher abundances in autumn. This rapid reorganization could be driven by higher water temperatures, lower dinoflagellate abundances, and lower nutrient concentrations. These changes could impact adjacent trophic levels, such as phytoplankton on which several species graze or fish larvae, leading to a mismatch situation with consequences for fish recruitment. Our results emphasize the impact that global and regional changes could have on coastal ecosystems through the role played by copepods. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Response of the meso- and macro-zooplankton community to long-term environmental changes in the southern North Sea.

Author

Marques, R, Otto, S A, Di Pane, J, Boersma, M, Meunier, C L, Wiltshire, K H, Möllmann, C, and Renz, J

Subjects
HYDROZOA, UNIVARIATE analysis, MULTIVARIATE analysis, CLIMATE change, ECOLOGICAL regime shifts, COMMUNITY change, EUTROPHICATION
Abstract

The North Sea (NS) is changing rapidly. Temporal variations in fishing intensity and eutrophic conditions, along with the ongoing impact of climate change, act in synergy resulting in modifications in marine communities. Although zooplankton has been extensively investigated, studies often ignore the large-sized meso- and macro-zooplankton (>500 µm), including holoplankton and meroplankton taxa. Here, we examined changes in abundances and community structure of these organisms between 1975 and 2018, using univariate and multivariate analysis, at different taxonomic levels. Abrupt changes in the abundances of (sub)communities occurred during different time periods and resulted in a significant restructuration of the entire community in 2006. These changes were consistent with the regime shifts reported in the NS and were a consequence of the environmental pressures on the whole community or on specific subcommunities. In the long term, the community shifted from higher abundances of hydrozoans and holoplankton taxa to an increasing abundance of decapods. Furthermore, we reveal the environmental variables that most explain the variability in the community dynamics, highlighting the importance of temperature and top-down processes. Our study underlines the relevance of investigations at different taxonomic levels, which elucidates how distinct responses to environmental changes ultimately shape the entire community structure. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Identification of tipping years and shifts in mesozooplankton community structure using multivariate analyses: a long-term study in southern North Sea.

Author

Di Pane, J, Boersma, M, Marques, R, Deschamps, M, Ecker, U, and Meunier, C L

Subjects
MULTIVARIATE analysis, TIME series analysis, COPEPODA, COMMUNITY change, REGRESSION trees
Abstract

Many previous studies on the changes in zooplankton communities considered only subsets of the total community. In this study, we investigated the temporal dynamics of the mesozooplankton community structure, considering all taxa (holo- and meroplankton) sampled over the last five decades at Helgoland Roads. We identified two tipping years. The first one occurred in 1983, which is consistent with previous studies conducted on copepods. The second shift, even more pronounced, took place in the mid-2000s. During the first shift, most taxa significantly increased in abundance and kept high densities until the end of the 1990s. Then, we observed in the mid-2000s a sharp decrease in community diversity and abundances of almost all taxa. One of the aims of the study was to test the robustness depending on the choice of taxa. To test this, we selected different subsets of the total zooplankton community, both randomly as well as based on functionality. We observed very similar trends over time for all groups, showing the complete community experienced the same changes. However, the timing of the tipping years depended on the organisms considered. These results highlight that the observed changes in the planktonic community are surprisingly robust and visible in most planktonic organisms. [ABSTRACT FROM AUTHOR]

Published
2024
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15. Introduction

Author

Bousquet, J., Bourret, R., Camuzat, T., Augé, P., Domy, P., Bringer, J., Best, N., Jonquet, O., de la Coussaye, J.-E., Noguès, M., Robine, J.-M., Avignon, A., Blain, H., Combe, B., Dray, G., Dufour, V., Fouletier, M., Giraudeau, N., Hève, D., Jeandel, C., Laffont, I., Larrey, D., Laune, D., Laurent, C., Mares, P., Marion, C., Pastor, E., Pélissier, J.-Y., Radier-Pontal, F., Reynes, J., Royère, E., Ychou, M., Bedbrook, A., Granier, S., Abecassis, F., Albert, S., Adnet, P.-A., Alomène, B., Amouyal, M., Arnavielhe, S., Asteriou, T., Attalin, V., Aubas, P., Azevedo, C., Badin, M., Bakhti, Baptista, G., Bardy, B., Battesti, M.-P., Bénézet, O., Bernard, P.-L., Berr, C., Berthe, J., Bobia, X., Bockaert, J., Boegner, C., Boichot, S., Bonnin, H.-Y., Boulet, P., Bouly, S., Boubakri, C., Bourdin, A., Bourrain, J.-L., Bourrel, G., Bouix, V., Breuker, C., Bruguière, V., Burille, J., Cade, S., Caimmi, D., Calmels, M.-V., Camu, W., Canovas, G., Carre, V., Cavalli, G., Cayla, G., Chiron, R., Claret, P.-G., Coignard, P., Coroian, F., Costa, D.-J., Costa, P., Cottalorda, Coulet, B., Coupet, A.-L., Courrouy-Michel, M.-C., Courtet, P., Cristol, J.-P., Cros, V., Cuisinier, F., Daien, C., Danko, M., Dauenhauer, P., Dauzat, M., David, M., Davy, J.-M., Delignières, D., Demoly, P., Desplan, J., Dhivert-Donnadieu, H., Dujols, P., Dupeyron, A., Dupeyron, G., Engberink, O., Enjalbert, M., Fattal, C., Fernandes, J., Fesler, P., Fraisse, P., Froger, J., Gabrion, P., Galano, E., Gellerat-Rogier, M., Gellis, A., Goucham, A.-Y., Gouzi, F., Gressard, F., Gris, J.-C., Guillot, B., Guiraud, D., Handweiler, V., Hantkié, H., Hayot, M., Hérisson, C., Heroum, C., Hoa, D., Jacquemin, S., Jaber, S., Jakovenko, D., Jorgensen, C., Journot, L., Kaczorek, M., Kouyoudjian, P., Labauge, P., Landreau, L., Lapierre, M., Leblond, C., Léglise, M.-S., Lemaitre, J.-M., Le Moing, V., Le Quellec, A., Leclercq, F., Lehmann, S., Lognos, B., Lussert, J.-M., Makinson, A., Mandrick, K., Marmelat, V., Martin-Gousset, P., Matheron, A., Mathieu, G., Meissonnier, M., Mercier, G., Messner, P., Meunier, C., Mondain, M., Morales, R., Morel, J., Morquin, D., Mottet, D., Nérin, P., Nicolas, P., Ninot, G., Nouvel, F., Ortiz, J.-P., Paccard, D., Pandraud, G., Pasdelou, M.-P., Pasquié, J.-L., Patte, K., Perrey, S., Pers, Y.-M., Picot, M.-C., Pin, J.-P., Pinto, N., Porte, E., Portejoie, F., Pujol, J.-L., Quantin, X., Quéré, I., Raffort, N., Ramdani, S., Ribstein, J., Rédini-Martinez, I., Richard, S., Ritchie, K., Riso, J.-P., Rivier, F., Rolland, C., Roubille, F., Sablot, D., Savy, J.-L., Schifano, L., Senesse, P., Sicard, R., Soua, B., Stephan, Y., Strubel, D., Sultan, A., Taddei-Ologeanu, Tallon, G., Tanfin, M., Tassery, H., Tavares, I., Torre, K., Touchon, J., Tribout, V., Uziel, A., Van de Perre, P., Vasquez, X., Verdier, J.-M., Vergne-Richard, C., Vergotte, G., Vian, L., Viarouge-Reunier, C., Vialla, F., Viart, F., Villain, M., Villiet, M., Viollet, E., Wojtusciszyn, A., Aoustin, M., Bourquin, C., and Mercier, J.

Published
2015
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16. Living Lab MACVIA-LR Équilibre et prévention des chutes

Author

Blain, H., Léglise, M.-S., Bernard, P.-L., Dupeyron, A., Pastor, E., Strubel, D., Akbaraly, T., Abecassis, F., Adnet, P.-A., Alomène, B., Amouyal, M., Bardy, B., Battesti, M.-P., Baptista, G., Boubakri, C., Burille, J., Calmels, M.-V., Canovas, G., Combe, B., Delignières, D., Dupeyron, G., Engberink, O., Gressard, F., Heve, D., Jakovenko, D., Jeandel, C., Lapierre, M., Laffont, I., Laurent, C., Lognos, B., Lussert, J.-M., Mandrick, K., Marmelat, V., Martin-Gousset, P., Matheron, A., Mercier, G., Meunier, C., Morel, J., Ninot, G., Nouvel, F., Pasdelou, M.-P., Pélissier, J.-Y., Perrey, S., Picot, M.-C., Pinto, N., Raffort, N., Ramdani, S., Radier-Pontal, F., Royère, E., Rédini-Martinez, I., Robine, J.-M., Roux, E., Savy, J.-L., Stephan, Y., Tallon, G., Torre, K., Verdier, J.-M., Vergotte, G., Viollet, E., Bedbrook, A., Granier, S., Camuzat, T., Bourret, R., Jonquet, O., de la Coussaye, J.-E., Noguès, M., Aoustin, M., Domy, P., Bringer, J., Mercier, J., and Bousquet, J.

Published
2015
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18. MACVIA-LR, Reference site of the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) in Languedoc Roussillon

Author

Bousquet, J., Bourquin, C., Augé, P., Domy, P., Bringer, J., Aoustin, M., Camuzat, T., Bourret, R., Best, N., Jonquet, O., de la Coussaye, J.E., Robine, J.M., Avignon, A., Blain, H., Giraudeau, N., Hève, D., Jeandel, C., Laffont, I., Larrey, D., Laurent, C., Noguès, M., Pélissier, J.Y., Radier-Pontal, F., Royère, E., Bedbrook, A., Granier, S., Abecassis, F., Albert, S., Adnet, P.A., Alomène, B., Amouyal, M., Arnavieilhe, S., Attalin, V., Aubas, P., Badin, M., Baptista, G., Bardy, B., Battesti, M.P., Bénézet, O., Bernard, P.L., Berr, C., Berthe, J., Bockaert, J., Boubakri, C., Bourdin, A., Bourrain, J.L., Bourrel, G., Bouix, V., Burille, J., Cade, S., Caimmi, D., Calmels, M.V., Camu, W., Cavalli, G., Cayla, G., Chiron, R., Combe, B., Costa, D.J., Costa, P., Courrouy-Michel, M.C., Courtet, P., Cristol, J.P., Cuisinier, F., Daien, C., Danko, M., Dauenhauer, P., Dauzat, M., David, M., Davy, J.M., Delignières, D., Demoly, P., Dhivert-Donnadieu, H., Dray, G., Dujols, P., Dupeyron, A., Dupeyron, G., Engberink, O., Fesler, P., Gellerat-Rogier, M., Gouzi, F., Gressard, F., Hoa, D., Jacquemin, S., Gris, J.C., Guillot, B., Handweiler, V., Hayot, M., Jaber, S., Jakovenko, D., Jorgensen, C., Journot, L., Kaczorek, M., Lapierre, M., Laune, D., Léglise, M.S., Le Quellec, A., Leclerc, F., Lehmann, S., Lognos, B., Lussert, J.M., Mandrick, K., Marmelat, V., Martin-Gousset, P., Matheron, A., Mathieu, G., Mercier, G., Messner, P., Meunier, C., Mondain, M., Morel, J., Morquin, D., Nérin, P., Ninot, G., Nouvel, F., Ortiz, J.P., Pandraud, G., Pasdelou, M.P., Pasquié, J.L., Pastor, E., Perrey, S., Pers, Y.M., Picot, M.C., Pin, J.P., Pinto, N., Portejoie, F., Pujol, J.L., Quantin, X., Quéré, I., Raffort, N., Ramdani, S., Reynes, J., Ribstein, J., Rédini-Martinez, I., Richard, S., Ritchie, K., Rolland, C., Roubille, F., Roux, E., Salvat, A., Savy, J.L., Stephan, Y., Strubel, D., Sultan, A., Tallon, G., Tassery, H., Torre, K., Uziel, A., Van de Perre, P., Vasquez, X., Verdier, J.M., Vergotte, G., Vian, L., Viarouge-Reunier, C., Vialla, F., Viart, F., Villain, M., Viollet, E., Ankri, J., Berrut, G., Crooks, G., Joël, M.E., Michel, J.P., Samolinski, B., Strandberg, T., Vellas, B., and Mercier, J.

Published
2014
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19. Living Lab Falls-MACVIA-LR: The falls prevention initiative of the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) in Languedoc-Roussillon

Author

Blain, H., Abecassis, F., Adnet, P.A., Alomène, B., Amouyal, M., Bardy, B., Battesti, M.P., Baptista, G., Bernard, P.L., Berthe, J., Boubakri, C., Burille, J., Calmels, M.V., Combe, B., Delignières, D., Dupeyron, A., Dupeyron, G., Engberink, O., Gressard, F., Hève, D., Jakovenko, D., Jeandel, C., Lapierre, M., Léglise, M.S., Laffont, I., Laurent, C., Lognos, B., Lussert, J.M., Mandrick, K., Marmelat, V., Martin-Gousset, P., Matheron, A., Mercier, G., Meunier, C., Morel, J., Ninot, G., Nouvel, F., Ortiz, J.P., Pasdelou, M.P., Pastor, E., Pélissier, J.Y., Perrey, S., Picot, M.C., Pinto, N., Ramdani, S., Radier-Pontal, F., Royère, E., Rédini-Martinez, I., Robine, J.M., Roux, E., Savy, J.L., Stephan, Y., Strubel, D., Tallon, G., Torre, K., Verdier, J.M., Vergotte, G., Viollet, E., Albinet, C., Ankri, J., Annweiler, C., Benetos, A., Beauchet, O., Berrut, G., Dargent, P., Decker, L., Hanon, O., Joël, M.E., Nourashemi, F., Puisieux, F., Rolland, Y., Ruault, G., Vellas, B., Vuillemin, A., Becker, C., Holand, N., Michel, J.P., Strandberg, T., Bedbrook, A., Granier, S., Camuzat, T., Bourret, R., Best, N., Jonquet, O., de la Coussaye, J.E., Mercier, J., Noguès, M., Aoustin, M., Domy, P., Bringer, J., Augé, P., Bourquin, C., and Bousquet, J.

Published
2014
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