FN Archimer Export Format
PT J
TI Deep-dwelling foraminifera as thermocline temperature recorders
BT 
AF CLEROUX, Caroline
   CORTIJO, Elsa
   DUPLESSY, Jean-Claude
   ZAHN, Rainer
AS 1:1;2:1;3:1;4:2,3;
FF 1:;2:;3:;4:;
C1 IPSL, Lab Sci Climat & Environm, Lab Mixte, CEA CNRS UVSQ, F-91198 Gif Sur Yvette, France.
   ICREA, E-08193 Bellaterra, Cerdanyola, Spain.
   Univ Autonoma Barcelona, Inst Ciencia & Tecnol Ambientals, E-08193 Bellaterra, Cerdanyola, Spain.
C2 IPSL, FRANCE
   ICREA, SPAIN
   UNIV AUTONOMA BARCELONA, SPAIN
IF 2.354
TC 82
UR https://archimer.ifremer.fr/doc/00236/34727/33178.pdf
LA English
DT Article
CR IMAGES 1-MD101
   IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
   MD 126 / MONA
   MD 127 / PAGE
BO Marion Dufresne
DE ;deep-dwelling foraminifera;depth habitat;isotopic temperature;thermocline;North Atlantic;Mauritanian upwelling;ecological prediction;stable isotopes;micropaleontology
AB We measured the oxygen isotopic composition of the deep-dwelling foraminiferal species G. inflata, G. truncatulinoides dextral and sinistral, and P. obliquiloculata in 29 modern core tops raised from the North Atlantic Ocean. We compared calculated isotopic temperatures with atlas temperatures and defined ecological models for each species. G. inflata and G. truncatulinoides live preferentially at the base of the seasonal thermocline. Under temperature stress, i.e., when the base of the seasonal thermocline is warmer than 16 degrees C, G. inflata and G. truncatulinoides live deeper in the main thermocline. P. obliquiloculata inhabits the seasonal thermocline in warm regions. We tested our model using 10 cores along the Mauritanian upwelling and show that the comparison of delta(18)O variations registered by the surficial species G. ruber and G. bulloides and the deep-dwelling species G. inflata evidences significant glacial-interglacial shifts of the Mauritanian upwelling cells.
PY 2007
PD APR
SO Geochemistry Geophysics Geosystems
SN 1525-2027
PU Amer Geophysical Union
VL 8
IS 4
UT 000246140300002
BP 1
EP 19
DI 10.1029/2006GC001474
ID 34727
ER

EF