FN Archimer Export Format
PT J
TI From seasonal patterns to a reference situation in an estuarine environment: Example of the small fish and shrimp fauna of the Gironde estuary (SW France)
BT 
AF LOBRY, Jeremy
   LEPAGE, Mario
   ROCHARD, Eric
AS 1:1,2;2:1;3:1;
FF 1:PDG-DOP-DCN-EMH;2:;3:;
C1 Estuarine Ecosyst & Diadromous Fish Res Unit, Cemagref, Grp Bordeaux, F-33612 Cestas, France.
C2 CEMAGREF, FRANCE
   IFREMER, FRE 3102 CNRS - UNIVERSITE DU HAVRE
SI NANTES
SE PDG-DOP-DCN-EMH
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
IF 1.733
TC 25
UR https://archimer.ifremer.fr/doc/2006/publication-1989.pdf
LA English
DT Article
DE ;Fish and shrimp assemblages dynamics;Gironde estuary;Correspondence analysis;Spatial pattern;STATIS
AB Detecting changes in animal communities suggests that a reference situation exists. It is a particularly difficult task in estuarine environments that are complex and fluctuate with time. Effects of human pressures are difficult to assess due to the scarcity or even the lack of evaluation and monitoring systems. In order to detect anomalies in the functioning of the system and to identify effects of perturbations upon populations and communities, it is necessary to analyse the dynamics in order to infer a reference state. This work aims to describe an approach based on K-Tab analyses and allows to define an average situation called "compromise" which is then compared to a single year of data. In this situation, the Gironde estuary, which has been monitored monthly from the 1980s, appears to be a very relevant case study. This paper focuses on spatial and temporal variations in species composition of fish and shrimp assemblages in the mesohaline and oligohaline stretches of the estuary and demonstrates a strong downstream-upstream structuring of species composition. Seasonal structure of the biological assemblages is highlighted and a biomass transfer in the water column between summer and winter is noticed. The habitat suitability is mainly discussed in terms of hydraulic regime but could also be discussed in terms of trophic resources availability. No important differences in the spatial distribution of the fish and shrimp assemblages can be detected between the year 2000 and the reference situation however the method is probably more relevant when detecting trends rather than single anomalies in the structure of the assemblages. (c) 2006 Elsevier Ltd. All rights reserved.
PY 2006
PD OCT
SO Estuarine, Coastal and Shelf Science
SN 0272-7714
PU Elsevier
VL 70
IS 1-2
UT 000241327200022
BP 239
EP 250
DI 10.1016/j.ecss.2006.06.014
ID 1989
ER

EF