FN Archimer Export Format
PT J
TI Fishing effects on diversity, size and community structure of the benthic invertebrate and fish megafauna on the Bay of Biscay coast of France
BT 
AF BLANCHARD, Fabian
   LE LOC'H, Francois
   HILY, Christian
   BOUCHER, Jean
AS 1:1;2:2;3:2;4:1;
FF 1:;2:;3:;4:;
C1 IFREMER, Ressources Halieut, F-29280 Plouzane, France.
   Univ Bretagne Occidentale, UMR CNRS 6539, LEMAR, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
SI BREST
SE IRD
   IUEM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.052
TC 82
UR https://archimer.ifremer.fr/doc/00000/10896/7578.pdf
LA English
DT Article
CR INTRIGAS I
BO Cote D'Aquitaine
DE ;benthic communities;community dynamics;disturbance;diversity;size spectrum
AB Within the framework of the 'dynamic equilibrium model', we tested the hypothesis that fishing causes major disturbance to benthic communities on deeper bottoms of the continental shelf. Benthic megafauna on the Bay of Biscay coast of France was sampled on fishing grounds subject to various conditions of exploitation. Samples were taken at around 100 m depth to avoid strong natural disturbances. Species diversity and the largest body mass class of invertebrates were smaller in strongly exploited areas than in moderately exploited ones. Biomass size spectra in strongly exploited areas were characterised by a comparatively large biomass of small invertebrates, hence the K-dominance curve of abundance was either above the biomass curve, or the curves intersected. In moderately exploited areas, the K-dominance biomass curves were above the abundance curves; the dominant species were a commercial species and a benthic species sensitive to the physical effects of the fishing gears. In the heavily exploited areas, the dominant species were opportunistic carnivorous species of minor or no commercial interest. There were no dominant fish species in the most strongly exploited areas, while 2 fish species were found in the moderately exploited areas. No fragile species were found in the most exploited areas, whereas 6 fragile species were found in the moderately exploited ones. It is concluded that the differences between the most strongly exploited and the moderately exploited areas were consistent with the hypothesis.
PY 2004
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 280
UT 000225268500021
BP 249
EP 260
DI 10.3354/meps280249
ID 10896
ER

EF