FN Archimer Export Format PT J TI Temporal variability of benthic-pelagic coupling in shallow enclosed environment: A case study with eutrophying shrimp ponds BT AF Hochard, Sébastien ROYER, Florence Hubert, Morgane Lemonnier, Hugues AS 1:1,2;2:1;3:1,3;4:1; FF 1:;2:PDG-RBE-LEADNC;3:PDG-REM-EEP-LEP;4:PDG-RBE-LEADNC; C1 IFREMER ,LEAD, BP 32078, 98897, Nouméa Cedex, New Caledonia SOPOMER, BP 1605, 98713, Papeete, French Polynesia IFREMER, LEP, Centre Bretagne, ZI de la Pointe du Diable, CS 10070, 29280, Plouzané, France C2 IFREMER, FRANCE SOPOMER, FRANCE IFREMER, FRANCE SI SAINT VINCENT BREST SE PDG-RBE-LEADNC PDG-REM-EEP-LEP IN WOS Ifremer UPR copubli-france IF 2.727 TC 3 UR https://archimer.ifremer.fr/doc/00485/59681/62754.pdf LA English DT Article DE ;Tropical aquaculture;Shrimp;Eutrophication;Benthic-pelagic coupling;Microphytobenthos;Bioturbation AB The evolution of benthic pelagic coupling was followed in two semi-intensive shrimp ponds in New Caledonia, with a special emphasis on the role of microphytobenthos (MPB). Three distinct periods could be identified. During the first period, MPB activity led to relative decoupling between the water column and the sediment, both compartments being autotrophic with low nutrients exchanges. During the second period, the sediment operated at the edge of a functional switch between autotrophy and heterotrophy. The amplitude of nutrient fluxes depended of the pool considered (DIN, DIP) and showed light dark variation. In the last period, sediment switched to heterotrophy with the establishment of benthic-pelagic coupling concomitantly to a massive sediment resuspension due to the shrimp activity. These findings should be considered for the management of aquaculture ponds and shallow enclosed water bodies. PY 2019 PD APR SO Marine Environmental Research SN 0141-1136 PU Elsevier BV VL 146 UT 000467511000005 BP 46 EP 56 DI 10.1016/j.marenvres.2019.03.005 ID 59681 ER EF