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Authors Pasqualini, V; Derolez, V; Garrido, M; Orsoni, V; Baldi, Y; Etourneau, S; Leoni, V; Rebillout, P; Laugier, T; Souchu, P; Malet, N
Author Full Name Pasqualini, Vanina; Derolez, Valerie; Garrido, Marie; Orsoni, Valerie; Baldi, Yoann; Etourneau, Sabrina; Leoni, Vanina; Rebillout, Patrick; Laugier, Thierry; Souchu, Philippe; Malet, Nathalie
Title Spatiotemporal dynamics of submerged macrophyte status and watershed exploitation in a Mediterranean coastal lagoon: Understanding critical factors in ecosystem degradation and restoration
Source ECOLOGICAL ENGINEERING
Language English
Document Type Article
Author Keywords Coastal lagoons; Human pressures; Long-term changes; Submerged macrophytes; Community shifts
Keywords Plus OF-VENICE; RUPPIA-CIRRHOSA; NUTRIENT LIMITATION; ZOSTERA-MARINA; CHESAPEAKE BAY; REGIME SHIFTS; ULVA RIGIDA; EBRO DELTA; EUTROPHICATION; PHYTOPLANKTON
Abstract Increases in the intensity of disturbances in coastal lagoons can lead to shifts in vegetation from aquatic angiosperms to macroalgal or phytoplankton communities. Such abrupt and discontinuous responses are facilitated by instability in the equilibrium controlling the trajectory of the community response. We hypothesized that the shift in macrophyte populations is reversible, and that this reversibility is dependent on changes in the pressures exerted on the watershed and lagoon functioning. Biguglia lagoon (Mediterranean Sea, Corsica) is an interesting case study for the evaluation of long-term coastal lagoon ecosystem functioning and the trajectory of submerged macrophyte responses to disturbances, to facilitate the appropriate restoration of ecosystems. We used historical data for a two hundred-year period to assess changes in human activities on the watershed of the Biguglia lagoon. Macrophyte mapping (from 1970) and monitoring data for dynamics (from 1999) were used to investigate the trajectory of the community response. The changes observed in this watershed included a large number of hydrological developments affecting salinity and resulting in changes in macrophyte distribution. Nutrient inputs over the last 40 years have led to a shift in the aquatic vegetation from predominantly aquatic angiosperm community to macroalgae and phytoplankton in 2007 (dystrophic crisis). Changes in hydrological management and improvements in sewage treatment after 2007 led to a significant increase of aquatic angiosperms over a relatively short period of time (4-5 years), particularly for Ruppia cirrhosa and Stuckenia pectinata. There has been a significant resurgence of Najas marina, due to changes in salinity. The observed community shift suggests that Biguglia lagoon is resilient and that the transition may be reversible. The restored communities closely resemble those present before disturbance. These findings demonstrate the need to understand watershed exploitation and ecosystem variability in lagoon restoration. (C) 2017 Elsevier B.V. All rights reserved.
Author Address [Pasqualini, Vanina; Garrido, Marie] Univ Corse, UMR SPE CNRS UMS Stella Mare CNRS, F-20250 Corte, France; [Derolez, Valerie; Laugier, Thierry; Souchu, Philippe] UMR MARBEC Ifremer, LER LR, 17 Rue Jean Monet, F-34200 Sete, France; [Orsoni, Valerie; Baldi, Yoann; Malet, Nathalie] IFREMER, LER PAC, Stn Bastia, F-20600 Immeuble Agostini, Bastia, France; [Etourneau, Sabrina; Leoni, Vanina] Reserve Nat Etang Biguglia, Dept Haute Corse, Route Etang, F-20600 Furiani, France; [Rebillout, Patrick] Meteo France, Stn Campo Oro, F-20090 Ajaccio, France
Reprint Address Pasqualini, V (reprint author), Univ Corse, UMR SPE CNRS UMS Stella Mare CNRS, F-20250 Corte, France.
E-mail Address pasquali@univ-corse.fr
ResearcherID Number Pasqualini, Vanina/D-7255-2012
ORCID Number Pasqualini, Vanina/0000-0001-5919-4805; Malet, Nathalie/0000-0003-1922-527X; Laugier, Thierry/0000-0003-0409-4510; Derolez, Valerie/0000-0002-6392-971X
Funding Agency and Grant Number national water agency (Rhone-Mediterranee-Corse); European ZOUMGEST program
Funding Text This study received financial support from the national water agency (Rhone-Mediterranee-Corse) and from the European ZOUMGEST program
Times Cited 12
Total Times Cited Count (WoS, BCI, and CSCD) 13
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0925-8574
29-Character Source Abbreviation ECOL ENG
ISO Source Abbreviation Ecol. Eng.
Publication Date MAY
Year Published 2017
Volume 102
Beginning Page 1
Ending Page 14
Digital Object Identifier (DOI) 10.1016/j.ecoleng.2017.01.027
Page Count 14
Web of Science Category Ecology; Engineering, Environmental; Environmental Sciences
Subject Category Environmental Sciences & Ecology; Engineering
Document Delivery Number ES5YX
Unique Article Identifier WOS:000399623700001
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