FN Archimer Export Format
PT J
TI Polychaete diversity at tropical Atlantic deep-sea sites: environmental effects
BT 
AF COSSON-SARRADIN, Nathalie
   SIBUET, Myriam
   PATERSON, GLJ
   VANGRIESHEIM, Annick
AS 1:1;2:1;3:2;4:1;
FF 1:;2:;3:;4:;
C1 IFREMER, Ctr Brest, Lab Ecol Abyssale, DRO,EP, F-29280 Plouzane, France.
   British Museum Nat Hist, Dept Zool, Nematode & Polychaete Res Grp, London SW7 5BD, England.
C2 IFREMER, FRANCE
   BRIT MNHN, UK
SI BREST
   BREST,SIEGE
IN WOS Ifremer jusqu'en 2018
IF 1.928
TC 60
UR https://archimer.ifremer.fr/doc/00179/28978/27398.pdf
LA English
DT Article
CR EUMELI 1
   EUMELI 2 LEG1 ET 2
   EUMELI 3 LEG 2
   EUMELI 4 LEG 1
   EUMELI 4 LEG 2
   EUMELI 5
   EUMELI3-OLIGO
BO Jean Charcot
   L'Atalante
   Le Suroît
   Anchored Buoy
DE ;deep sea;tropical Atlantic;diversity;polychaete community;environmental conditions
AB This study assesses how differences in nutrient flux and bottom currents affect the diversity and trophic structure of deep-sea polychaete communities from the tropical northeast Atlantic at 20 degrees to 21 degrees N latitude. Faunal assemblages were studied from 3 sets of USNEL box cores (0.25 m(2)) taken at depths of 1700, 3100 and 4600 m. In terms of primary productivity, the cores were taken beneath water which is eutrophic, mesotrophic and oligotrophic, respectively. Total polychaete abundance, abundance of dominant species, and faunal similarity and diversity were compared among the 3 sites. Polychaete abundance decreased with increasing depth. Community structure reflected environmental characteristics as well as the influence of coastal upwelling. Polychaete diversity showed a parabolic distribution, with depth peaking at about 2000 m. Species richness observed at the eutrophic site was generally higher than observed at other deep-sea regions of comparable depth at temperate latitudes. This points to regional variation in processes contributing to diversity patterns of deep fauna. We suggest that the diversity pattern observed results from non-equilibrial interactions between production and disturbance in the form of current energy and bioturbation. Diversity patterns observed in the EUMELI sites seem best explained by the intermediate productivity theory. The rate of production encountered at the eutrophic site may overcome much of the impact of physical and biological disturbances, favouring a diverse species assemblage.
PY 1998
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 165
UT 000073828700015
BP 173
EP 185
DI 10.3354/meps165173
ID 28978
ER

EF