%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Lefebvre, S.
%A Verpoorter, C.
%A Rodier, Martine
%A Sangare, N.
%A Andréfouët, Serge
%T Remote sensing provides new insights on phytoplankton biomass dynamics and black pearl oyster life-history traits in a Pacific Ocean deep atoll
%D 2022
%L fdi:010085892
%G ENG
%J Marine Pollution Bulletin
%@ 0025-326X
%K Landsat-8, time series ; Plankton ; Aquaculture ; DEB model ; Pinctada margaritifera
%K PACIFIQUE ; POLYNESIE FRANCAISE ; TUAMOTU ARCHIPEL
%M ISI:000830496500001
%P 113863 [13 ]
%R 10.1016/j.marpolbul.2022.113863
%U https://www.documentation.ird.fr/hor/fdi:010085892
%> https://www.documentation.ird.fr/intranet/publi/2022-09/010085892.pdf
%V 181
%W Horizon (IRD)
%X Thus far, no long-term in situ observation of planktonic biomass have been undertaken to optimize the black-lip pearl oyster aquaculture in the remote Tuamotu atolls. The feasibility of using data from the OLI sensor onboard Landsat-8 satellite to determine chlorophyll a concentrations (Chla) in a deep atoll, Ahe, was then assessed over the 2013-2021 period using 153 images. Validations with in situ observations were satisfactory, while seasonal and spatial patterns in Chla were evidenced within the lagoon. Then, a bioenergetic modelling exercise was undertaken to estimate oyster life-history traits when exposed to the retrieved Chla. The outputs provide spatio-temporal variations in pelagic larval duration (11.1 to 30.6 days), time to reach commercial size (18.8 to 45.3 months) and reproductive outputs (0.5 to 1.7 event year(-1)). This first study shows the potential of using remote sensing to monitor the trophic status of deep pearl farming lagoons and help aquaculture management.
%$ 040 ; 126 ; 036 ; 020