ANR MANA
MANagement of Atolls
Pearl farming is the main economic activity of many atolls and islands of French Polynesia and the Cook Islands. However, it remains fragile. One of the weak links is the ability to explain the variability of pearl oyster spat collection efficiency. In particular, the problem depends on the life cycle of oyster populations and lagoon hydrodynamics. This 2017-2022 project focused on better understanding and modeling these aspects for lagoons with contrasting ocean openings, for the sites of Ahe, Takaroa, Raroia and Manihiki.
The ANR MANA project has been closed since September 2022, but in addition to the valorization of the results which will continue for several more years given the volume of data acquired, the same objectives as MANA are already being pursued on new pearl sites (Gambier, Takapoto and Apataki) thanks to funding from French Polynesia and the contribution of the Commission Nationale de la Flotte Côtière.
The scientific publications of the project published to date are listed below.
A 64-page summary document on the results of the project, intended for pearl farming professionals, has been produced for distribution in paper and digital versions. It constitutes the number 25 of the magazine Te Reko Parau published by the partner Direction des Ressources Marines de Polynésie française. It is available on http://www.ressources-marines.gov.pf/cdi/magazines/te-reko-parau/
© Andréfouët et al.
References
André, L.V., Chinain, M., Gatti, C.M., Liao, V., Van Wynsberge, S., Tedesco, P., Andréfouët, S., 2022a. A systematic prioritization approach for identifying suitable pearl oyster restocking zones following a mass mortality event in Takaroa Atoll, French Polynesia. Marine Pollution Bulletin 176, 113472. https://doi.org/10.1016/j.marpolbul.2022.113472
André, L.V., Van Wynsberge, S., Chinain, M., Gatti, C.M.I., Liao, V., Andréfouët, S., 2022b. Spatial Solutions and Their Impacts When Reshuffling Coastal Management Priorities in Small Islands with Limited Diversification Opportunities. Sustainability 14, 3871. https://doi.org/10.3390/su14073871
André, L.V., Van Wynsberge, S., Chinain, M., Andréfouët, S., 2022c. Benefits of collaboration between indigenous fishery management and data-driven spatial planning approaches: the case of a Polynesian traditional design (rāhui). Fisheries Research 256, 106475. https://doi.org/10.1016/j.fishres.2022.106475
André, L.V., Van Wynsberge, S., Chinain, M., Andréfouët, S., 2021a. An appraisal of systematic conservation planning for Pacific Ocean Tropical Islands coastal environments. Mar. Poll. Bull. 165, 112131. https://doi.org/10.1016/j.marpolbul.2021.112131
André, L.V., Van Wynsberge, S., Chinain, M., Gatti, C.M.I., Dempsey, A., Andréfouët, S., 2021b. A framework for mapping local knowledge on ciguatera and artisanal fisheries to inform systematic conservation planning. ICES Journal of Marine Science 78, 1357–1371. https://doi.org/10.1093/icesjms/fsab016
Andréfouët, S., Genthon, P., Pelletier, B., Le Gendre, R., Friot, C., Smith, R., Liao, V., 2020. The lagoon geomorphology of pearl farming atolls in the Central Pacific Ocean revisited using detailed bathymetry data. Mar. Poll. Bull. 160, 111580. https://doi.org/10.1016/j.marpolbul.2020.111580
Andréfouët, S., Le Gendre, R., Thomas, Y., Lo-Yat, A., Reisser, C.M.O., 2021. Understanding connectivity of pearl oyster populations within Tuamotu atoll semi-closed lagoons: Cumulative insight from genetics and biophysical modelling approaches. Mar. Poll. Bull. 167, 112324. https://doi.org/10.1016/j.marpolbul.2021.112324
Andréfouët, S., Lo-Yat, A., Lefebvre, S., Bionaz, O., Liao, V., 2022a. The MANA (MANagement of Atolls, 2017–2022) project for pearl oyster aquaculture management in the Central Pacific Ocean using modelling approaches: Overview of first results. Marine Pollution Bulletin 178, 113649. https://doi.org/10.1016/j.marpolbul.2022.113649
Andréfouët, S., Desclaux, T., Buttin, J., Jullien, S., Aucan, J., Le Gendre, R., Liao, V., 2022b. Periodicity of wave-driven flows and lagoon water renewal for 74 Central Pacific Ocean atolls. Marine Pollution Bulletin 179, 113748. https://doi.org/10.1016/j.marpolbul.2022.113748
Aucan, J., Desclaux, T., Le Gendre, R., Liao, V., Andréfouët, S., 2021. Tide and wave driven flow across the rim reef of the atoll of Raroia (Tuamotu, French Polynesia). Mar. Poll. Bull. 171, 112718. https://doi.org/10.1016/j.marpolbul.2021.112718
Bionaz, O., Le Gendre, R., Liao, V., Andréfouët, S., 2022. Natural stocks of Pinctada margaritifera pearl oysters in Tuamotu and Gambier lagoons: New assessments, temporal evolutions, and consequences for the French Polynesia pearl farming industry. Marine Pollution Bulletin 183, 114055. https://doi.org/10.1016/j.marpolbul.2022.114055
Dutheil, C., Andrefouët, S., Jullien, S., Le Gendre, R., Aucan, J., Menkes, C., 2020. Characterization of south central Pacific Ocean wind regimes in present and future climate for pearl farming application. Mar. Poll. Bull. 160, 111584. https://doi.org/10.1016/j.marpolbul.2020.111584
Dutheil, C., Jullien, S., Aucan, J., Menkes, C., Le Gendre, R., Andréfouët, S., 2021. The wave regimes of the Central Pacific Ocean with a focus on pearl farming atolls. Mar. Poll. Bull. 162, 111751. https://doi.org/10.1016/j.marpolbul.2020.111751
Grenz, C., Rodier, M., Seceh, C., Varillon, D., Haumani, G., Pinazo, C., 2021. Benthic nutrients and oxygen fluxes at the water sediment interface in a pearl farming atoll (Ahe, Tuamotu, French Polynesia). Mar. Poll. Bull. 173, 112963. https://doi.org/10.1016/j.marpolbul.2021.112963
Lefebvre, S., Verpoorter, C., Rodier, M., Sangare, N., Andréfouët, S. 2022. Remote sensing provides new insights on phytoplankton biomass dynamics and black pearl oyster life-history traits in a Pacific Ocean deep atoll. Marine Pollution Bulletin. https://doi.org/10.1016/j.marpolbul.2022.113863
Lo-Yat, A., Monaco, C.J., Thomas, Y., Czorlich, Y., Le Borgne, F., Muylaert, M., Le Moullac, G., Vanaa, V., Beliaeff, B., Garen, P., 2022. Mismatch between the ecological processes driving early life-stage dynamics of bivalves at two contrasting French Polynesian lagoons. Marine Pollution Bulletin 183, 114099. https://doi.org/10.1016/j.marpolbul.2022.114099
Monaco, C.J., Sangare, N., Le Moullac, G., Basset, C., Belliard, C., Mizuno, K., Smith, D.L., Lo-Yat, A., 2021. Dynamic Energy Budget model suggests feeding constraints and physiological stress in black-lip pearl oysters, 5 years post mass-mortality event. Mar. Poll. Bull. 167, 112329. https://doi.org/10.1016/j.marpolbul.2021.112329
Pagano, M., Rodier, M., Guillaumot, C., Thomas, Y., Henry, K., Andréfouët, S., 2017. Ocean-lagoon water and plankton exchanges in a semi-closed pearl farming atoll lagoon (Ahe, Tuamotu archipelago, French Polynesia). Estuarine, Coastal and Shelf Science 191, 60–73. https://doi.org/10.1016/j.ecss.2017.04.017
Reisser, C.M.O., Gendre, R.L., Chupeau, C., Lo-Yat, A., Planes, S., Andréfouët, S., 2020. Population Connectivity and Genetic Assessment of Exploited and Natural Populations of Pearl Oysters within a French Polynesian Atoll Lagoon. Genes 11, 426. https://doi.org/10.3390/genes11040426
Rodier, M., Pinazo, C., Seceh, C., Varillon, D., 2021. Pelagic stocks and carbon and nitrogen uptake in a pearl farming atoll (Ahe, French Polynesia). Mar. Poll. Bull. 167, 112352. https://doi.org/10.1016/j.marpolbul.2021.112352
Sangare, N., Lo-Yat, A., Le Moullac, G., Pecquerie, L., Thomas, Y., Beliaeff, B., Andréfouët, S., 2019. Estimation of physical and physiological performances of blacklip pearl oyster larvae in view of DEB modeling and recruitment assessment. Journal of Experimental Marine Biology and Ecology 512, 42–50. https://doi.org/10.1016/j.jembe.2018.12.008
Sangare, N., Lo-Yat, A., Moullac, G.L., Pecquerie, L., Thomas, Y., Lefebvre, S., Gendre, R.L., Beliaeff, B., Andréfouët, S., 2020. Impact of environmental variability on Pinctada margaritifera life-history traits: A full life cycle deb modeling approach. Ecological Modelling 423, 109006. https://doi.org/10.1016/j.ecolmodel.2020.109006
Seceh, C., Pinazo, C., Rodier, M., Lajaunie-Salla, K., Mazoyer, C., Grenz, C., Le Gendre, R., 2021. Biogeochemical model of nitrogen cycling in Ahe (French Polynesia), a South Pacific coral atoll with pearl farming. Mar. Poll. Bull. 169, 112526. https://doi.org/10.1016/j.marpolbul.2021.112526
Van Wynsberge, S., Menkes, C., Le Gendre, R., Passfield, T., Andréfouët, S., 2017. Are Sea Surface Temperature satellite measurements reliable proxies of lagoon temperature in the South Pacific? Estuarine, Coastal and Shelf Science 199, 117–124. https://doi.org/10.1016/j.ecss.2017.09.033
Van Wynsberge, S., Le Gendre, R., Sangare, N., Aucan, J., Menkes, C., Liao, V., Andréfouët, S., 2020. Monitoring pearl farming lagoon temperature with global high resolution satellite-derived products: An evaluation using Raroia Atoll, French Polynesia. Mar. Poll. Bull. 160, 111576. https://doi.org/10.1016/j.marpolbul.2020.111576
