FN Archimer Export Format
PT J
TI A reverse taxonomic approach to assess macrofaunal distribution patterns in abyssal Pacific polymetallic nodule fields
BT 
AF JANSSEN, Annika
   KAISER, Stefanie
   MEISSNER, Karin
   BRENKE, Nils
   MENOT, Lenaick
   MARTINEZ ARBIZU, Pedro
AS 1:1;2:1;3:2;4:1;5:3;6:1;
FF 1:;2:;3:;4:;5:PDG-REM-EEP-LEP;6:;
C1 Deutsch Zentrum Marine Biodiversitatsforsch, Senckenberg Meer, D-26382 Wilhelmshaven, Germany.
   Deutsch Zentrum Marine Biodiversitatsforsch, Senckenberg Meer, Biozentrum Grindel, D-20146 Hamburg, Germany.
   Inst Francais Rech Exploitat Mer, Ctr Brest, F-29280 Plouzane, France.
C2 DZMB, GERMANY
   DZMB, GERMANY
   IFREMER, FRANCE
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-europe
IF 3.057
TC 70
UR https://archimer.ifremer.fr/doc/00255/36595/35158.pdf
LA English
DT Article
CR BIONOD
BO L'Atalante
AB Heightened interest in the exploitation of deep seafloor minerals is raising questions on the consequences for the resident fauna. Assessing species ranges and determination of processes underlying current species distributions are prerequisites to conservation planning and predicting faunal responses to changing environmental conditions. The abyssal central Pacific nodule belt, located between the Clarion and Clipperton Fracture Zones (CCZ), is an area prospected for mining of polymetallic nodules. We examined variations in genetic diversity and broad-scale connectivity of isopods and polychaetes across the CCZ. Faunal assemblages were studied from two mining claims (the eastern German and French license areas) located 1300 km apart and influenced by different productivity regimes. Using a reverse taxonomy approach based on DNA barcoding, we tested to what extent distance and large-scale changes in environmental parameters lead to differentiation in two macrofaunal taxa exhibiting different functions and life-history patterns. A fragment of the mitochondrial gene Cytochrome Oxidase Subunit 1 (COI) was analyzed. At a 97% threshold the molecular operational taxonomic units (MOTUs) corresponded well to morphological species. Molecular analyses indicated high local and regional diversity mostly because of large numbers of singletons in the samples. Consequently, variation in composition of genotypic clusters between sites was exceedingly large partly due to paucity of deep-sea sampling and faunal patchiness. A higher proportion of wide-ranging species in polychaetes was contrasted with mostly restricted distributions in isopods. Remarkably, several cryptic lineages appeared to be sympatric and occurred in taxa with putatively good dispersal abilities, whereas some brooding lineages revealed broad distributions across the CCZ. Geographic distance could explain variation in faunal connectivity between regions and sites to some extent, while assumed dispersal capabilities were not as important.
PY 2015
PD FEB
SO Plos One
SN 1932-6203
PU Public Library Science
VL 10
IS 2
UT 000349545300070
BP 1
EP 26
DI 10.1371/journal.pone.0117790
ID 36595
ER

EF