FN Archimer Export Format
PT J
TI Faunal changes and geographic crypticism indicate the occurrence of a biogeographic transition zone along the southern East Pacific Rise
BT 
AF MATABOS, M.
   PLOUVIEZ, S.
   HOURDEZ, S.
   DESBRUYERES, Daniel
   LEGENDRE, P.
   WAREN, A.
   JOLLIVET, D.
   THIEBAUT, E.
AS 1:1,2;2:2,3;3:2,3;4:4;5:5;6:6;7:2,3;8:2,3;
FF 1:;2:;3:;4:PDG-REM-EEP-LEP;5:;6:;7:;8:;
C1 Museum Natl Hist Nat, UPMC, CNRS, Dept Milieux & Peuplements Aquat,UMR BOREA 7208, F-75231 Paris 05, France.
   CNRS, UMR 7144, F-29682 Roscoff, France.
   Univ Paris 06, Stn Biol Roscoff, UMR 7144, Lab Adaptat & Divers Milieu Marin, F-29680 Roscoff, France.
   IFREMER, Dept Etud Ecosyst Profonds, F-29280 Plouzane, France.
   Univ Montreal, Dept Sci Biol, Montreal, PQ H3C 3J7, Canada.
   Swedish Museum Nat Hist, SE-10405 Stockholm, Sweden.
C2 MNHN, FRANCE
   CNRS, FRANCE
   UNIV PARIS 06, FRANCE
   IFREMER, FRANCE
   UNIV MONTREAL, CANADA
   SWEDISH MUSEUM NAT HIST, SWEDEN
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 4.544
TC 25
UR https://archimer.ifremer.fr/doc/00033/14395/11767.pdf
LA English
DT Article
CR BIOSPEEDO
BO L'Atalante
DE ;Biogeographic patterns;community structure;East Pacific Rise;hydrothermal vents;marine biodiversity;molecular systematics;mussel beds;species richness
AB Aim Deep-sea hydrothermal vents have now been reported along all active mid-ocean ridges and back-arc basins, but the boundaries of biogeographic entities remain questionable owing to methodological issues. Here we examine biogeographic patterns of the vent fauna along the East Pacific Rise (EPR) and determine the relative roles of regional and local factors on the distribution of biodiversity associated with mussel beds along a poorly explored zone, the southern EPR (SEPR). Location East Pacific Rise. Methods A species list of macrobenthic invertebrates along the EPR was compiled from the literature and supplemented with data recovered during the French research cruise BIOSPEEDO carried out in 2004 along the SEPR. Biogeographic patterns were assessed by combining the identification of morphological species with a molecular barcoding approach. A multivariate regression tree (MRT) analysis was performed to identify any geographic breaks, and an empirical distribution of species richness was compared with predictions provided by a mid-domain effect model. Macrofaunal community structure associated with mussel beds along the SEPR was analysed in relation to environmental factors using cluster and canonical redundancy analyses. Results Sequencing of the cytochrome c oxidase subunit I gene revealed the occurrence of several cryptic species complexes along the EPR, with the equator separating the southern and northern clades. Furthermore, during the BIOSPEEDO cruise at least 10 still unnamed species were collected between 7 degrees 25' S and 21 degrees 33' S. The shift in community structure identified by MRT analysis was located south of 17 degrees 34' S or south of 13 degrees 59' S, depending on the data used, suggesting that the southern part of the SEPR (17 degrees 25'-21 degrees 33' S) constitutes a biogeographic transition zone in the vent fauna along the EPR. At a regional scale, latitude combined with the type of venting was significantly correlated with the community structure associated with mussel beds. Main conclusions Together, the molecular data, in situ observations, and the distribution of species suggest that the high diversity of vent fauna species presently observed between 17 degrees 25' S and 21 degrees 33' S is probably a result of the overlap of several distinct biogeographic provinces. We argue that this area thus constitutes a biogeographic vent fauna transition zone along the EPR.
PY 2011
PD MAR
SO Journal Of Biogeography
SN 0305-0270
PU Wiley-blackwell
VL 38
IS 3
UT 000288462800013
BP 575
EP 594
DI 10.1111/j.1365-2699.2010.02418.x
ID 14395
ER

EF