FN Archimer Export Format
PT J
TI Population dynamics of modern planktonic foraminifera in the western Barents Sea
BT 
AF Meilland, Julie
   Howa, Hélène
   Hulot, Vivien
   Demangel, Isaline
   Salaun, Joëlle
   Garlan, Thierry
AS 1:1;2:2;3:3,4;4:5,6;5:7;6:7;
FF 1:;2:;3:;4:;5:;6:;
C1 MARUM - Center for Marine Environmental Sciences, Leobener Str. 8, D-28359, Bremen, Germany
   LPG-BIAF, UMR-CNRS 6112, University of Angers, France
   University of French Polynesia, UMR-241 EIO, Labex Corail, FAA’A, Tahiti, French Polynesia
   Ifremer, UMR-241 EIO, Labex Corail, Departement Ressources Biologiques et Environnement, Vairao, Tahiti, French Polynesia
   Institute of Earth Sciences, University of Graz, NAWI Graz Geocenter, Graz, Austria
   Department of Geology, University of Lund, Lund, Sweden
   SHOM – Sciences et Techniques Marines/Géologie Marine, Brest, France
C2 UNIV BREMEN MARUM, GERMANY
   UNIV ANGERS, FRANCE
   UNIV POLYNESIE FRANCAISE, FRANCE
   IFREMER, FRANCE
   UNIV GRAZ, AUSTRIA
   UNIV LUND, SWEDEN
   SHOM, FRANCE
SI TAHITI
SE PDG-RBE-RMPF
UM EIO
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.295
TC 13
UR https://archimer.ifremer.fr/doc/00591/70265/68323.pdf
   https://archimer.ifremer.fr/doc/00591/70265/71898.pdf
LA English
DT Article
CR MOCOSED 2014
BO Pourquoi pas ?
AB This study reports on species diversity and distribution of planktonic foraminifera (PF) at the Barents Sea Opening (BSO). PF populations living in late summer (collected by mean of stratified plankton tows) and recently settled individuals (sampled by interface corer) were studied and compared. High abundances reaching up to 400 ind.m−3 in tow samples and 8000 ind.cm−3 in surface sediments were recorded in the centre of the studied area while low abundances were observed in coastal areas, likely hampered by continental influences. The living and subfossil (i.e. core-top) assemblages are mainly composed of the four same species Neogloboquadrina pachyderma, Neogloboquadrina incompta, Turborotalita quinqueloba and Globigerinita uvula. The two species G. uvula and T. quinqueloba largely dominate the upper water column whereas surface sediment assemblages display especially high concentrations of N. pachyderma. The unusual dominance of G. uvula in the water sample assemblages compared to its low occurrence in surface sediments might be the signature of (1) a seasonal signal due to summer phytoplankton composition changes at the BSO, linked to the increase of summer temperature at the study site, and/or (2) a signal of a larger time-scale and wide geographical reach phenomenon inducing poleward temperate/subpolar species migration and consecutive foraminiferal assemblage diversification at high latitudes under global climate forcing. Protein concentrations were measured on single specimens and used as a proxy of individual carbon biomass. Specimens of all species show the same trend, i.e. a northward decrease of their size-normalized-protein concentration suggesting foraminiferal biomass to be potentially controlled by different constituents of their organelles (e.g. lipids). The originality of coupling data from plankton tows, protein measurements and surface sediments allows us to hypothesise that PF dynamics (seasonality and distribution) is decoupled from their metabolism. 
PY 2020
PD MAR
SO Biogeosciences
SN 1726-4170
PU Copernicus GmbH
VL 17
IS 6
UT 000521640600001
BP 1437
EP 1450
DI 10.5194/bg-17-1437-2020
ID 70265
ER

EF