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Title

Changes in the distribution of copepods in the Gironde estuary: A warming and marinisation consequence?

Publication Year

2013

Author(s)
  • Chaalali, Aurelie
  • Chevillot, Xavier
  • Beaugrand, Gregory
  • David, Valerie
  • Luczak, Christophe
  • Boet, Philippe
  • Sottolichio, Aldo
  • Sautour, Benoit
Source
ESTUARINE COASTAL AND SHELF SCIENCE Volume: 134 Pages: 150-161 Published: 2013
ISSN
0272-7714 eISSN: 1096-0015
Abstract

The Gironde is the largest estuary of South-West Europe and is one of the best monitored estuarine systems in the world. This macrotidal estuary is characterized by a low biodiversity in both oligo- and mesohaline zones. Its zooplankton community is constituted by only five major species, three calanoid copepods (including one invasive species) and two mysids. Retrospective analyses have already documented a warming associated to a phenomenon of marinisation. Here, we investigate the influence of both marinisation and warming on the spatial distribution and the abundance of copepods (i.e. Eurytemora affinis, Acartia bifilosa and neritic species) in the Gironde estuary. We modelled the environmental envelope of the copepods as a function of salinity and temperature to demonstrate that the alteration of their longitudinal distribution in the estuary between 1975 and 2003 was the result of both changing temperature and salinity. Although the upstream movement of neritic species was mostly related to salinity, we show that the augmentation of both temperature and salinity was at the origin of the upstream progression of both A. bifilosa and E. affinis. These results suggest that the distribution of copepods can be affected by both anthropogenic forcing and climatic change, which modulate the physic-chemistry of the Gironde estuary. (C) 2012 Elsevier Ltd. All rights reserved.

Author Keyword(s)
  • Gironde estuary
  • marinisation
  • copepods
  • temperature
  • climate change
  • environmental envelope
KeyWord(s) Plus
  • HIGHLY TURBID ESTUARY
  • LONG-TERM CHANGES
  • EURYTEMORA-AFFINIS
  • CLIMATE-CHANGE
  • EUROPEAN ESTUARIES
  • TEMPORAL PATTERNS
  • MARINE ECOSYSTEMS
  • TEMPERATE ESTUARY
  • MONDEGO ESTUARY
  • SCHELDE ESTUARY
ESI Discipline(s)
  • Geosciences
  • Plant & Animal Science
Web of Science Category(ies)
  • Marine & Freshwater Biology
  • Oceanography
Adress(es)

[Chaalali, Aurelie; Chevillot, Xavier; David, Valerie; Sautour, Benoit] Univ Bordeaux 1, Environm & Paleoenvironm Ocean & Continentaux, Stn Marine Arcachon, CNRS,UMR 5805, F-33120 Arcachon, France; [Beaugrand, Gregory; Luczak, Christophe] CNRS, Lab Oceanol & Geosci, Stn Marine Wimereux, UMR 8187, F-75700 Paris, France; [Chevillot, Xavier; Boet, Philippe] Irstea, Unite Ecosyst Estuariens & Poissons Migrateur Amp, Cestas, France; [Sottolichio, Aldo] Univ Bordeaux 1, EPOC, CNRS, UMR 5805, F-33405 Talence, France

Reprint Adress

Chaalali, A (reprint author), Univ Bordeaux 1, Environm & Paleoenvironm Ocean & Continentaux, Stn Marine Arcachon, CNRS,UMR 5805, 2 Rue Prof Jolyet, F-33120 Arcachon, France.

Country(ies)
  • France
CNRS - Adress(es)
  • Environnements et paléoenvironnements océaniques et continentaux (EPOC), UMR5805
  • Institut de Physique du Globe de Paris (IPGP), UMR7154
Accession Number
WOS:000327677300016
uid:/08F84DPS
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