FN Archimer Export Format
PT J
TI Shift in benthic assemblages and organisms’ diet at salmon farms: community structure and stable isotope analyses
BT 
AF CALLIER, Myriam
   LEFEBVRE, Sebastien
   DUNAGAN, Mary K.
   BATAILLE, Marie-Paule
   COUGHLAN, Jennifer
   CROWE, Tasman P.
AS 1:1,2;2:3;3:2;4:4;5:2;6:2;
FF 1:PDG-RBE-BOME-LALR;2:;3:;4:;5:;6:;
C1 IFREMER, Dept Ressources Biol & Environm, Unite Biol Organismes Marins Exploites, ECOSYM,UMR 5119,Stn Palavas, F-34250 Palavas Les Flots, France.
   Univ Coll Dublin, Sch Biol & Environm Sci, Dublin 4, Ireland.
   Univ Lille 1 Sci & Technol, LOG, UMR CNRS 8187, Stn Marine Wimereux, F-62930 Wimereux, France.
   Univ Caen, Inst Biol Fondamentale & Appl, EVA, INRA,UMR 950, F-14032 Caen, France.
C2 IFREMER, FRANCE
   UNIV COLL DUBLIN, IRELAND
   UNIV LILLE, FRANCE
   UNIV CAEN, FRANCE
SI PALAVAS
   AUTRE
SE PDG-RBE-BOME-LALR
   AUTRE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.64
TC 18
UR https://archimer.ifremer.fr/doc/00144/25481/23634.pdf
LA English
DT Article
DE ;Aquaculture;Organic matter;Stable isotope;Community structure;Diet shift;Trophic structure
AB The extent of the influence of salmon farming on the environment and on the uptake of particulate and dissolved effluents by benthic organisms was assessed using community structure and stable isotope analyses. Sediment cores were collected in 2 directions: perpendicular and parallel to the main residual current, 0, 25 and 200 m from 2 salmon farms (Millstone and Cranford) located in Mulroy Bay, Ireland. In addition, artificial substrates were placed for 2 mo at 1 m depth 0, 25 and 200 m from one farm to trace the uptake of farm-related nutrients by fouling organisms. The extent of measurable change in benthic communities (abundance, diversity, structure, trophic composition) depended on residual current direction. Intraspecific variation in isotopic values in benthic invertebrates was mostly explained by distance from cages. Organisms collected at impacted sites exhibited a shift in isotopic composition towards that of farm wastes. A shift in δ13C was observed in several invertebrates, including the polychaetes Malacoceros fuliginosus and Nephtys hombergii, Nematoda and the anemone Anthopleura balii. Fouling communities collected on artificial structures, mainly composed of the tunicate Ascidiella aspersa, showed higher δ15N values at fish cage sites compared to sites 200 m away. The study demonstrated that fish effluents were assimilated and became food sources for several organisms.
PY 2013
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 483
UT 000319680700011
BP 153
EP 167
DI 10.3354/meps10251
ID 25481
ER

EF