FN Archimer Export Format
PT J
TI Evaluating ecosystem functioning of a long-term dumping site in the Bay of Seine (English Channel)
BT 
AF Raoux, Aurore
   Baux, Noémie
   Pezy, Jean-Philippe
   Balay, Pierre
   Lesourd, Sandric
   Dauvin, Jean-Claude
AS 1:1;2:1,2,3;3:1;4:4;5:1;6:1;
FF 1:;2:;3:;4:;5:;6:;
C1 Normandie Univ, UNICAEN, Laboratoire Morphodynamique Continentale et Côtière, CNRS UMR 6143 M2C, 24 rue des Tilleuls, 14000 Caen, France
   Normandie univ., UNICAEN, Laboratoire des Sciences Appliquées de Cherbourg, EA 4253, 50100 Cherbourg, France
   Conservatoire National des Arts et Métiers, INTECHMER, 50100 Cherbourg, France
   Cellule de Suivi du Littoral Normand, CSLN, 53 Rue de Prony, 76600 Le Havre, France
C2 UNIV NORMANDIE, FRANCE
   UNIV NORMANDIE, FRANCE
   INTECHMER CNAM, FRANCE
   CSLN, FRANCE
IF 1.14
TC 4
UR https://archimer.ifremer.fr/doc/00622/73393/72610.pdf
LA English
DT Article
DE ;Dredged material disposal;Harbour activities;Ecopath model;Ecological Network;Analysis;Benthic indicators;Impacted zone;Non-impacted zone;Bay of Seine
AB The impact of 70 years of dumping harbour dredged material on ecosystem functioning was compared to a control site (non-impacted zone). A combination of indices (Shannon-Wiener diversity, Pielou evenness, BO2A, AMBI benthic indices) and modelling (Ecopath models) generated Ecological Network Analysis indices were used to detect the dumping operations effects. ENA indices showed that dumping operations appear to have a relatively limited impact on the structure and flow pattern of the local food web. In fact, only small variations between the two sites are revealed by a comparison of ENA indices between the impacted and non-impacted zone. This result could be explained by the fact that the Bay of Seine is historically characterized by a high level of human activities, which have led to an increase in resilience through time to face these multiple pressures. AMBI and BO2A indices (of the sediment fauna) did not allow a clear distinction between impacted and non-impacted zone while species richness, abundance, biomass and Shannon-Wiener diversity index values were significantly higher in the non-impacted zone which is in accordance with the small variations of ENA indices between the two zones and revealed a local and limited impact. Our results suggested that a combination of several tools should be used to detect the true impacts and to conduct diagnosis of the ecological status of dumping deposit in a coastal area permanently stressed under natural and anthropogenic forcing. 
PY 2020
PD AUG
SO Ecological Indicators
SN 1470-160X
PU Elsevier BV
VL 115
UT 000561438700007
DI 10.1016/j.ecolind.2020.106381
ID 73393
ER

EF