FN Archimer Export Format PT J TI Restoration ecology of coastal lagoons: new methods for the prediction of ecological trajectories and economic valuation BT AF DE WIT, Rutger REY-VALETTE, Helene BALAVOINE, Juliette OUISSE, Vincent LIFRAN, Robert AS 1:1;2:2;3:1,3;4:4;5:2; FF 1:;2:;3:;4:PDG-ODE-LITTORAL-LERLR;5:; C1 Univ Montpellier, IFREMER, IRD, Ctr Marine Biodivers Exploitat & Conservat MARBEC, Montpellier, France. Univ Montpellier, INRA, UMR LAMETA, Montpellier, France. PAM PNUE Reg Act Ctr, Plan Bleu Mediterranee, Valbonne, France. Univ Montpellier, IFREMER, IRD, Ctr Marine Biodivers Exploitat & Conservat MARBEC, Sete, France. C2 UNIV MONTPELLIER, FRANCE INRA, FRANCE PAM PNUE REG ACT CTR, FRANCE IFREMER, FRANCE SI SETE SE PDG-ODE-LITTORAL-LERLR UM MARBEC IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-univ-france IF 2.988 TC 29 UR https://archimer.ifremer.fr/doc/00317/42867/42368.pdf LA English DT Article DE ;coastal lagoon;seagrass meadow;marine and brackish Magnoliophyta;phytoplankton;ecosystem services;willingness to pay (WTP);ecosystem trajectory' nutrient enrichment;oligotrophication;sediment N and P contents;Water Framework Directive AB Conservation of the seven lagoons of the Palavas complex (southern France) has been severely impaired by nutrient over-enrichment during at least four decades. The effluents of the Montpellier wastewater treatment plant (WWTP) represented the main nutrient input. To improve the water quality of these lagoons, this WWTP was renovated and upgraded and, since the end of 2005, its effluents have been discharged 11 km offshore into the Mediterranean (total investment €150 M). Possibilities of ecosystem restoration as part of a conservation programme were explored by a focus group of experts. Their tasks were: (i) to evaluate the impact of the reduction of the nutrient input; (ii) if necessary, to design additional measures for an active restoration programme; and (iii) to predict ecosystem trajectories for the different cases. Extension of Magnoliophyta meadows can be taken as a proxy for ecosystem restoration as they favour the increase of several fish (seahorse) and bird (ducks, swans, herons) species, albeit they represent a trade-off for greater flamingos. Additional measures for active ecosystem restoration were only recommended for the most impaired lagoon Méjean, while the least impaired lagoon Ingril is already on a trajectory of spontaneous recovery. A multiple contingent valuation considering four different management options for the Méjean lagoon was used in a pilot study based on face-to-face interviews with 159 respondents. Three levels of ecosystem restoration were expressed in terms of recovery of Magnoliophyta meadows, including their impact on emblematic fish and avifauna. These were combined with different options for access (status quo, increasing access, increasing access with measures to reduce disturbance). The results show a willingness of local populations to pay per year about €25 for the highest level of ecological restoration, while they were only willing to allocate about €5 for additional footpaths and hides. PY 2017 PD FEB SO Aquatic Conservation-marine And Freshwater Ecosystems SN 1052-7613 PU Wiley VL 27 IS 1 UT 000394898200012 BP 137 EP 157 DI 10.1002/aqc.2601 ID 42867 ER EF