Planktonic foraminifera
Factors controlling the depth habitat of planktonic foraminifera in the subtropical eastern North Atlantic
... Abstract. Planktonic foraminifera preserved in marine sed- iments archive the physical and chemical conditions under which they built their ...fossil foraminifera, the recorded proxy signals have to ...
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Reconciling single chamber Mg/Ca with whole test δ<sup>18</sup>O in surface to deep dwelling planktonic foraminifera from the Mozambique Channel
... Using core top samples from the Indian Ocean, Birch et al. (2013) report δ 13 C and δ 18 O measurements made on several species of planktonic foraminifera across a range of tightly constrained size windows. ...
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Calcification intensity in planktonic Foraminifera reflects ambient conditions irrespective of environmental stress
... intensity could be due to changes in sea water carbonate chemistry. Such link seems to be the most commonly invoked hypothesis explaining differences in calcification rates among modern planktonic ...
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Calcification in the planktonic foraminifera <i>Globigerina bulloides</i> linked to phosphate concentrations in surface waters of the North Atlantic Ocean
... the planktonic foraminifera Globigerina bulloides, collected from the surface waters of the North Atlantic, are compared with in situ carbonate ion concen- trations ([CO 2− 3 ]), optimum growth conditions ...
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Calcification depth of deep-dwelling planktonic foraminifera from the eastern North Atlantic constrained by stable oxygen isotope ratios of shells from stratified plankton tows
... In addition, several studies have reported that the isotopic composition of shells of some planktonic foraminifera devi- ate from the predicted theoretical value for the ambient sea- water in which they ...
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Lunar periodicity in the shell flux of planktonic foraminifera in the Gulf of Mexico
... Abstract. Synchronised reproduction offers clear benefits to planktonic foraminifera – an important group of ma- rine calcifiers – as it increases the chances of success- ful gamete fusion. Such synchrony ...
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Radiocarbon age offsets between two surface dwelling planktonic foraminifera species during abrupt climate events in the SW Iberian Margin
... Age discrepancies between paired leached samples and leachates highlight the secondary 220.. addition of younger carbon and subsequent contamination on the outer shell (Fig.[r] ...
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Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast
... benthic foraminifera and cytherurid ostracods, associate with the reduction in the abundance of planktonic ...the foraminifera and ostracods are rare and badly preserved, which could be related to ...
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Braz. j. oceanogr. vol.59 número4
... in planktonic foraminifera species are related to test size, having important implications when choosing foraminifera test size fractions for paleoceanographic interpretations (OPPO; FAIRBANKS, ...
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Upper ocean mixing controls the seasonality of planktonic foraminifer fluxes and associated strength of the carbonate pump in the oligotrophic North Atlantic
... An overarching climatological variable affecting this re- gion especially is the North Atlantic Oscillation (NAO), which exerts a strong influence on air temperature, stormi- ness, heat loss, winter mixed layer depth, ...
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AbstrAct: Strontium isotope data were obtained from foraminifera
... Another hiatus was identified in the Miocene section in drill-hole PEL-2A. This major discontinuity between the middle and late Miocene (Langhian–Tortonian) spanning 3.54 Ma that involved the complete Serravalian stage ...
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Impact of seawater <i>p</i>CO<sub>2</sub> on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with <i>Ammonia tepida</i>
... ]. Planktonic foraminifera shell weight have been shown to increase with increasing temperature (Barker and Elderfield, 2002), therefore, the co-variation of these two pa- rameters made it difficult to ...
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Benthic foraminiferal distribution influenced by rivers on the northern gulf of Cadiz continental shelf
... of foraminifera in the study region, fragments of dead benthic foraminifera were counted and compared with intact ones, as well as the intact tests of planktonic ...dead foraminifera with ...
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Seasonality in planktic foraminifera of the central California coastal upwelling region
... and foraminifera (Barker and Elderfield, 2002; Manno et ...planktic foraminifera in this intense upwelling region can therefore serve as a base- line for future climate-driven change and may help to iden- ...
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Benthic foraminifera as palaeo-environmental indicators in the Northern Gulf of Cadiz
... 23 In the laboratory, each vial was marked with a line to delimit total sediment volume. Samples were washed with tap water for 10 to 15 minutes, through 63 and 2000 μm sieves, which had previously been placed in a tub ...
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Molecular evidence for Lessepsian invasion of soritids (larger symbiont bearing benthic foraminifera).
... Living specimens of the soritids were collected from various depths along the Israeli Mediterranean coast and the Gulf of Elat, under the official approval of Israel Nature and Parks Authority (Figure 1, Table 1). The ...
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Braz. J. Geol. vol.45 número2
... 2. Distinct depositional environments were recognized within a low slope homoclinal carbonate ramp system. Shallow carbonate shoals are composed of oolitic and oncolitic grainstones, which presents low micrite content ...
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Susceptibility of planktonic cultures of Streptococcus mutans to photodynamic therapy with a light-emitting diode
... Current options to reduce the population of car- iogenic microorganisms are restricted to mechanical removal and the use of antiseptics. PDT might be an excellent alternative, or accessory therapy, for the control of ...
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Resistance of Oxidative Stress in Biofilm and Planktonic Cells
... of bacteria to the surface and going into a state of a settled lifestyle is associated with the changes in the protein profile (unpublished results). For many microorganisms it was observed that sudden changes in living ...
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Ecologic zonation model of the benthic foraminifera and thecamoebians of Guadiana river estuary and application in paleoenvironmental reconstruction
... and foraminifera paleo-assemblages in five boreholes drilled in the estuarine sediments, these authors proposed the first chronological model for post-glacial marine transgression in the Guadiana ...
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