FN Archimer Export Format PT J TI Bioremediation of fishpond effluent and production of microalgae for an oyster farm in an innovative recirculating integrated multi-trophic aquaculture system BT AF Li, Meng Callier, Myriam Blancheton, Jean-Paul Galès, Amandine Nahon, Sarah Triplet, Sebastien Geoffroy, Thibault Menniti, Christophe Fouilland, Eric ROQUE D'ORBCASTEL, Emmanuelle AS 1:1,2;2:2;3:2;4:3;5:4;6:5;7:5;8:6;9:7;10:3; FF 1:;2:PDG-RBE-MARBEC-LAAAS;3:PDG-RBE-MARBEC-LAAAS;4:PDG-ODE-LITTORAL-LERLR;5:;6:PDG-RBE-MARBEC-LSEA;7:PDG-RBE-MARBEC-LSEA;8:;9:;10:PDG-ODE-LITTORAL-LERLR; C1 Fisheries College, Ocean University of China, Qingdao 266001, China MARBEC, University of Montpellier, IRD, Ifremer, CNRS, Palavas-les-Flots, France MARBEC, University of Montpellier, IRD, Ifremer, CNRS, Sète, France UMR1419 Nutrition, Métabolisme et Aquaculture NuMéA, AquaPôle INRA, 64310 Saint Pée-sur-Nivelle, France Ifremer, L-SEA, Palavas-les-Flots, France Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR5110, Université de Perpignan Via Domitia, 66860 Perpignan, France MARBEC, University of Montpellier, IRD, Ifremer, CNRS, Sète, France C2 UNIV OCEAN CHINA, CHINA IFREMER, FRANCE IFREMER, FRANCE INRA, FRANCE IFREMER, FRANCE CEFREM, FRANCE CNRS, FRANCE SI PALAVAS SETE SE PDG-RBE-MARBEC-LAAAS PDG-ODE-LITTORAL-LERLR PDG-RBE-MARBEC-LSEA UM MARBEC IN WOS Ifremer UPR WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-p187 copubli-int-hors-europe copubli-sud IF 3.224 TC 33 UR https://archimer.ifremer.fr/doc/00480/59207/61900.pdf LA English DT Article DE ;Microalgae;IMTA;Nutrient bioremediation;Community structure;Oysters AB Integrated multi-trophic aquaculture (IMTA) systems are a promising solution for sustainable aquaculture combining nutrient recycling with increased biomass production. An innovative land-based recirculating aquaculture system (RAS) was studied in France for a 60-day experiment. It combined a European sea bass (Dicentrarchus labrax) RAS with two other production systems: high rate algal ponds (HRAP) with natural marine polyspecific algal assemblages, and oysters in separate open tanks. The objective was the assessment of: 1) the efficiency and the stability of the microalgae bioremediation of the effluent from a fish RAS in spring and summer, 2) the abundance and the diversity patterns of the microalgae biomass for consumption in the oyster compartment of the IMTA. Silicate was added every week after the beginning of the experiment for maintaining a Si:N:P molar ratio of 10:5:1 in the HRAP to encourage the growth of diatoms. The HRAP have an overall removal efficiency of 98.6 ± 0.2% for NO3-N, 98.0 ± 0.4% for NO2-N, 97.3 ± 0.7% for NH4-N and 96.1 ± 0.6% for PO4-P, with removal rates of 335.8 ± 0.8, 23.6 ± 0.2, 30.9 ± 0.2, and 22.3 ± 0.2 mg m−2 d−1, respectively. The concentration of total suspended solid (TSS) and chlorophyll a (chl a) increased during the experiment and reached maximum values on day 46 (135.3 ± 34.7 mg TSS L−1 and 0.42 ± 0.03 mg chl a L−1) after which the microalgae collapsed due to a CO2 limitation (pH ca. 10). Sequencing analysis revealed that the microalgae community was dominated by Tetraselmis sp. from day 1 to day 16 (45.7% to 73.8% relative abundance). From day 30 to day 43 the culture was dominated by diatoms, Phaeodactylum sp. (83.4% to 98.1% relative abundance). Although the stable carbon isotope signatures confirmed that the microalgae were consumed, oysters' growth was limited in the RAS-IMTA, suggesting that oysters were under stress or not fed enough. PY 2019 PD APR SO Aquaculture SN 0044-8486 PU Elsevier BV VL 504 UT 000459962400037 BP 314 EP 325 DI 10.1016/j.aquaculture.2019.02.013 ID 59207 ER EF