FN Archimer Export Format
PT J
TI A Multidisciplinary Approach for Restoration Ecology of Shallow Coastal Lagoons, a Case Study in South France
BT 
AF De Wit, Rutger
   Leruste, Amandine
   Le Fur, Ines
   Maki Sy, Mariam
   Bec, Beatrice
   Ouisse, Vincent
   Derolez, Valerie
   Rey-Valette, Hélène
AS 1:1;2:4;3:2;4:4;5:4;6:2;7:2;8:3;
FF 1:;2:;3:PDG-ODE-LITTORAL-LERLR;4:;5:;6:PDG-ODE-LITTORAL-LERLR;7:PDG-ODE-LITTORAL-LERLR;8:;
C1 MARBEC, Université de Montpellier, CNRS, IRD, Ifremer, Montpellier, France
   MARBEC, Université de Montpellier, CNRS, IRD, Ifremer, Séte, France
   CEE-M, Université de Montpellier, CNRS, INRA, Montpellier SupAgro, Montpellier, France
   MARBEC, Université de Montpellier, CNRS, IRD, Ifremer, Montpellier, France
C2 CNRS, FRANCE
   IFREMER, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV MONTPELLIER, FRANCE
SI SETE
SE PDG-ODE-LITTORAL-LERLR
UM MARBEC
IN WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-univ-france
IF 2.686
TC 18
UR https://archimer.ifremer.fr/doc/00629/74145/73683.pdf
   https://archimer.ifremer.fr/doc/00629/74145/73684.pdf
LA English
DT Article
DE ;restoration ecology;ecological restoration;water quality;WFD;ecosystem trajectories;DPSIR;conservation;ecological indices
AB By the end of the 20th century, many of the coastal lagoons along the French Mediterranean coast showed insufficient water quality and degraded ecosystem states due to anthropogenic impacts. Among these, nutrient over-enrichment, resulting in eutrophication, has been a major concern. The EU Water Framework Directive (WFD) has initiated public action to improve their water quality and ecosystem state using an approach rooted in restoration ecology. Here we analyze how this has been applied for the coastal lagoons in South France, considering eutrophication as an example of ecosystem degradation and oligotrophication as the corresponding trajectory for ecological restoration of the eutrophied coastal lagoons. Oligotrophication trajectories, initiated by the reduction of external nutrient loading, have resulted in a quick recovery (i.e., within 3 years) of integrative water column variables (Chlorophyll a, total N and P) and phytoplankton. Starting from hypertrophic systems, the oligotrophication trajectory is described by a sequence of three ecosystem states dominated respectively by (i) phytoplankton with bare non-vegetated sediments, (ii) opportunistic macroalgae, (iii) angiosperm and perennial macroalgae, punctuated by regime shifts between these ecosystem states. Nevertheless, the latter regime shift has not been observed for the most degraded ecosystems after 10-years oligotrophication. The N and P accumulated in sediments during eutrophication may also retard the ecological restoration. In shallow freshwater lakes, the phytoplankton-dominated and the angiosperm-dominated states are also characteristic for highly degraded and fully restored ecosystems states, respectively. In contrast, opportunistic macroalgae do not bloom in these systems. Hence, the alternative stable state model, used successfully for these lakes, cannot be applied straightforwardly for coastal lagoons. To be successful, ecological restoration should consider the legislative and societal questions as according the DPSIR framework it typically is a response of society. The conservation-oriented Habitats Directive systematically applies to coastal lagoons and the Birds Directive in some cases as well. The WFD approach is complementary to these more conventional nature conservation approaches. Collectively, local citizens and highly involved stakeholders strongly value the coastal lagoons and attribute very high importance to their regulating ecosystem services (ESs), while differences between stakeholder profiles are related to different perceptions and appreciations of cultural ESs. Hence, coastal lagoon ESs are very important for the different stakeholders and public policies aiming at the ecological restoration of these ecosystems may count on public support. 
PY 2020
PD MAY
SO Frontiers In Ecology And Evolution
SN 2296-701X
PU Frontiers Media SA
VL 8
IS 108
UT 000539217800001
DI 10.3389/fevo.2020.00108
ID 74145
ER

EF