FN Archimer Export Format
PT J
TI A box-model of carrying capacity of the Thau lagoon in the context of ecological status regulations and sustainable shellfish cultures
BT 
AF Pete, Romain
   Guyondet, Thomas
   Bec, Beatrice
   Derolez, Valerie
   Cesmat, Ludovic
   Lagarde, Franck
   Pouvreau, Stephane
   Fiandrino, Annie
   Richard, Marion
AS 1:1;2:2;3:1;4:1;5:3;6:1;7:4;8:1;9:1;
FF 1:PDG-ODE-LITTORAL-LERLR;2:;3:PDG-ODE-LER-LERAR;4:PDG-ODE-LITTORAL-LERLR;5:;6:PDG-ODE-LITTORAL-LERLR;7:PDG-RBE-PFOM-LPI;8:PDG-ODE-LITTORAL-LERLR;9:PDG-ODE-LITTORAL-LERLR;
C1 Marine Biodiversity, Exploitation and Conservation (MARBEC). Univ Montpellier, CNRS, Ifremer, IRD, CC093, Place Eugène Bataillon, 34095, Montpellier Cedex 5, Montpellier & Sète, France
   Department of Fisheries and Oceans, Gulf Fisheries Center, P.O. Box 5030, Science Branch, Moncton, NB E1C 9B6 , Canada
   Syndicat Mixte du Bassin de Thau, 328, Quai des Moulins-34200 SETE, France
   Ifremer, Laboratoire des Sciences de l'Environnement Marin (LEMAR), 29840 Argenton-en-Landunvez, France
C2 IFREMER, FRANCE
   MPO, CANADA
   SYNDICAT MIXTE BASSIN THAU (SMBT), FRANCE
   IFREMER, FRANCE
SI SETE
   ARCACHON
   ARGENTON
SE PDG-ODE-LITTORAL-LERLR
   PDG-ODE-LER-LERAR
   PDG-RBE-PFOM-LPI
UM LEMAR
   MARBEC
IN WOS Ifremer UPR
   WOS Ifremer UMR
   copubli-france
   copubli-int-hors-europe
IF 2.974
TC 13
UR https://archimer.ifremer.fr/doc/00622/73395/75312.pdf
LA English
DT Article
DE ;Shellfish farming;Carrying capacity;Stakeholder implication;Nitrogen and phosphorus inputs;Water frame directive;Ecological indicators;Phytoplankton depletion;Coupled biogeochemical-deb model
AB The decrease of microbial and nutrient inputs from the watershed has long dominated lagoon ecosystem management objectives. Phytoplankton biomass and abundance have drastically decreased for more than a decade and Zostera meadow have gradually recovered, expressing lagoon ecosystem restoration such as Thau lagoon. Do the progressive achievement of the good ecological status of the Thau lagoon possibly threatens the shellfish industry in terms of production and oyster quality, by reducing the carrying capacity? To provide answers about the right balance to be achieved between conservation and exploitation, a new numerical tool was developed to help in decision-making. We hereby propose to incorporate a Dynamic Energy Budget type shellfish production model to an existing lagoon ecosystem box-model. The influence of different scenarios of nutrient inputs (related to projections of population growth or improvement of treatment plants) and shellfish stocks were tested on oyster performances (production, oyster condition index), carrying capacity of the lagoon and ecological status indices used within the EU Water Framework Directive. Model outputs demonstrated that shellfish production was mainly controlled by nutrient inputs, which depend on hydro-meteorological variability, and specifically by phosphorus and N:P ratios of nutrient inputs. Scenarios tested, however, demonstrated smaller differences of oyster production in comparison to inter-annual variability. The overall ecological status of the lagoon remained in a “good” status with acceptable lagoon-scale phytoplankton depletion, regardless of scenarios, setting the carrying capacity of this ecosystem to be sustainable. 
PY 2020
PD JUL
SO Ecological Modelling
SN 0304-3800
PU Elsevier BV
VL 426
UT 000529795300004
DI 10.1016/j.ecolmodel.2020.109049
ID 73395
ER

EF