Deep‐dwelling foraminifera as thermocline temperature recorders

Cléroux, Caroline; Cortijo, Elsa; Duplessy, Jean Claude; Zahn, Rainer

doi:10.1029/2006gc001474

Cited by 94 publications

(92 citation statements)

References 44 publications

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“…N. dutertrei records conditions towards the bottom of the seasonal thermocline (Billups et al, 2004) with the highest flux in winter (Deuser and Ross, 1989). Thus its living conditions are comparable to those of G. inflata (Fairbanks et al, 1980;Deuser and Ross, 1989;Cléroux et al, 2007). Contrary to the other sites in this study, heaviest δ 13 C values were not concurrent with the sea level highstands of MIS 13a and 11c, both of which exhibit relatively low values (Fig.…”

Section: Comparison To Published Recordscontrasting

confidence: 46%

“…G. inflata is one of the dominant species in the planktic foraminifer fauna associated with the NAC (Ottens, 1991). Its stable isotope values reflect hydrographic conditions at the base of the seasonal thermocline (Cléroux et al, 2007); conditions that are close to those in the winter mixed layer to which Ganssen (1983) relates G. inflata in the NW-African upwelling region. Details on stable isotope measurements for ODP Site 980 are given by Oppo et al (1998) and McManus et al (1999), for ODP Site 1056 by Chaisson et al (2002) and Billups et al (2004) and for ODP Site 1058 by Billups et al (2006) (Shackleton, 1974).…”

Section: Methodsmentioning

confidence: 99%

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Variations in mid-latitude North Atlantic surface water properties during the mid-Brunhes (MIS 9–14) and their implications for the thermohaline circulation

Voelker¹,

Rodrigues²,

et al. 2010

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Abstract. Stable isotope and ice-rafted debris records from three core sites in the mid-latitude North Atlantic (IODP Site U1313, MD01-2446, MD03-2699 are combined with records of ODP Sites 1056/1058 and 980 to reconstruct hydrographic conditions during the middle Pleistocene spanning Marine Isotope Stages (MIS) 9-14 (300-540 ka). Core MD03-2699 is the first high-resolution mid-Brunhes record from the North Atlantic's eastern boundary upwelling system covering the complete MIS 11c interval and MIS 13. The array of sites reflect western and eastern basin boundary current as well as north to south transect sampling of subpolar and transitional water masses and allow the reconstruction of transport pathways in the upper limb of the North Atlantic's circulation. Hydrographic conditions in the surface and deep ocean during peak interglacial MIS 9 and 11 were similar among all the sites with relative stable conditions and confirm prolonged warmth during MIS 11c also for the mid-latitudes. Sea surface temperature (SST) reconstructions further reveal that in the mid-latitude North Atlantic MIS 11c is associated with two plateaus, the younger one of Correspondence to: A. Voelker (antje.voelker@lneg.pt) which is slightly warmer. Enhanced subsurface northward heat transport in the eastern boundary current system, especially during early MIS 11c, is denoted by the presence of tropical planktic foraminifer species and raises the question how strongly it impacted the Portuguese upwelling system. Deep water ventilation at the onset of MIS 11c significantly preceded surface water ventilation. Although MIS 13 was generally colder and more variable than the younger interglacials the surface water circulation scheme was the same. The greatest differences between the sites existed during the glacial inceptions and glacials. Then a north -south trending hydrographic front separated the nearshore and offshore waters off Portugal. While offshore waters originated from the North Atlantic Current as indicated by the similarities between the records of IODP Site U1313, ODP Site 980 and MD01-2446, nearshore waters as recorded in core MD03-2699 derived from the Azores Current and thus the subtropical gyre. Except for MIS 12, Azores Current influence seems to be related to eastern boundary system dynamics and not to changes in the Atlantic overturning circulation.

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Section: Comparison To Published Recordscontrasting

confidence: 46%

Section: Methodsmentioning

confidence: 99%

Variations in mid-latitude North Atlantic surface water properties during the mid-Brunhes (MIS 9–14) and their implications for the thermohaline circulation

Voelker¹,

Rodrigues²,

et al. 2010

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“…The subsurface-dwellers Neogloboquadrina dutertrei and Pulleniatina obliquiloculata have been associated with a calcification depth of 0 -100 meters and 60 -150 meters in the upper and middle thermocline, respectively (Erez and Honjo, 1981;Fairbanks et al, 1982;Ravelo and Fairbanks, 1992;Pflaumann and Jian, 1999;Spero et al, 2003;Field, 2004;Kuroyanagi and Kawahata, 2004;Cléroux et al, 2007;Huang et al, 2008). We also included the deep-dwelling species Globorotalia scitula to analyse deep water conditions (Bé, 1969;Ortiz et al, 1996;Itou et al, 2001;Fallet et al, 2011).…”

Section: Species Selection and Chamber Analysis Used For Proxy Develomentioning

confidence: 99%

“…(red), N. dutertrei (blue), P. obliquiloculata (orange) and G. scitula (green). Species specific Mn/Ca is plotted at depth as suggested habitat depth based on literature and inferred calcification depth (Bé, 1969;Cléroux et al, 2007;Erez and Honjo, 1981;Fairbanks et al, 1982;Fallet et al, 2011;Hemleben et al, 1989;Huang et al, 2008;Itou et al, 2001;Kuroyanagi and Kawahata, 2004;Ortiz et al, 1996;Pflaumann and Jian, 1999;Ravelo and Fairbanks, 1992;Spero et al, 2003) for the species studied here. The boundary of the box closest to zero indicates the 25th percentile, a line within the box marks the median, and the boundary of the box farthest from zero indicates the 75th percentile.…”

Section: Paleo-applicationmentioning

confidence: 99%

Anti-cyclonic eddy imprint on calcite geochemistry of several planktonic foraminiferal species in the Mozambique Channel

Steinhardt

Cléroux

Ullgren³

et al. 2014

Marine Micropaleontology

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Hydrographic conditions in the Mozambique Channel are dominated by the passing of large anticyclonic eddies, propagating poleward into the upstream Agulhas area. Further south, these eddies have been found to control the shedding of Agulhas rings into the Atlantic ocean, thereby playing a key role in Indo-Atlantic Ocean exchange. The element composition of several planktonic foraminifera species collected from sediment trap samples, was compared to in situ water column data from the Mozambique Channel. Single-chamber trace element composition of these foraminifera reveals a close coupling with hydrographic changes induced by anticyclonic eddies.Obtained Mg/Ca values for the surface dwelling Globigerinoides ruber as well as the thermocline dwelling Neogloboquadrina dutertrei follow temperature changes and reduced temperature stratification during eddy conditions. At greater depth, Globorotalia scitula and Pulleniatina obliquiloculata record stable temperatures and thus respond to hydrographic changes with a deepening in habitat depth. Furthermore, test Mn/Ca values indicate a close relationship between water column oxygenation and Mn incorporation in these planktonic foraminiferal species.

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“…The observed composition of the analysed shells is explained on the basis of a statistical comparison between modern surface hydrology and shells extracted from sediment core tops (Imbrie and Kipp, 1971; without consideration of biological mechanisms such as seasonality or potential deeper habitat in the water column (e.g. Cleroux et al, 2007;King and Howard, 2005). Planktic foraminiferal seasonality and depth preferences in the ocean waters, as well as growth under laboratory conditions, are strongly linked to environmental conditions, mainly temperature, light (for species with symbionts) and food availability (Bijma et al, 1990;Kuroyanagi and Kawahata, 2004;Lombard et al, 2009b;Schiebel et al, 2001;Spero and Parker, 1985).…”

Section: Introductionmentioning

confidence: 99%

Modelling planktic foraminifer growth and distribution using an ecophysiological multi-species approach

et al. 2011

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Abstract. We present an eco-physiological model reproducing the growth of eight foraminifer species (Neogloboquadrina pachyderma, Neogloboquadrina incompta, Neogloboquadrina dutertrei, Globigerina bulloides, Globigerinoides ruber, Globigerinoides sacculifer, Globigerinella siphonifera and Orbulina universa). By using the main physiological rates of foraminifers (nutrition, respiration, symbiotic photosynthesis), this model estimates their growth as a function of temperature, light availability, and food concentration. Model parameters are directly derived or calibrated from experimental observations and only the influence of food concentration (estimated via Chlorophyll-a concentration) was calibrated against field observations. Growth rates estimated from the model show positive correlation with observed abundance from plankton net data suggesting close coupling between individual growth and population abundance. This observation was used to directly estimate potential abundance from the model-derived growth. Using satellite data, the model simulate the dominant foraminifer species with a 70.5% efficiency when compared to a data set of 576 field observations worldwide. Using outputs of a biogeochemical model of the global ocean (PISCES) instead of satellite images as forcing variables gives also good results, but with lower efficiency (58.9%). Compared to core tops observations, the model also correctly reproduces the relative worldwide abundance and the diversity of the eight species when using either satellite data either PISCES Correspondence to: F. Lombard (lombardfa@gmail.com) results. This model allows prediction of the season and water depth at which each species has its maximum abundance potential. This offers promising perspectives for both an improved quantification of paleoceanographic reconstructions and for a better understanding of the foraminiferal role in the marine carbon cycle.

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Deep‐dwelling foraminifera as thermocline temperature recorders

Cited by 94 publications

References 44 publications

Variations in mid-latitude North Atlantic surface water properties during the mid-Brunhes (MIS 9–14) and their implications for the thermohaline circulation

Variations in mid-latitude North Atlantic surface water properties during the mid-Brunhes (MIS 9–14) and their implications for the thermohaline circulation

Anti-cyclonic eddy imprint on calcite geochemistry of several planktonic foraminiferal species in the Mozambique Channel

Modelling planktic foraminifer growth and distribution using an ecophysiological multi-species approach

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