Biogeography of planktonic Foraminifera

Arnold, Anthony J.; Parker, William C.

doi:10.1007/0-306-48104-9_7

Cited by 36 publications

(36 citation statements)

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“…The use of P/B ratio to represent sea-level changes exhibits many drawbacks. For instance, dissolution affects preferentially to planktic foraminifera (Kucera, 2007), and the planktic foraminifera abundance decreases in brackish waters (Arnold and Parker, 1999;Retailleau et al, 2009). Furthermore, benthic foraminiferal abundance interferes with oxygen and food levels at the sea floor affecting the P/B ratio (van Hinsbergen et al, 2005;Milker, 2010).…”

Section: Methodsmentioning

confidence: 99%

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Messinian paleoenvironmental evolution in the lower Guadalquivir Basin (SW Spain) based on benthic foraminifera

Pérez-Asensio

Aguirre

Schmiedl

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

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Benthic foraminiferal assemblages of a drill core from the lower Guadalquivir Basin (northern Gulf of Cádiz, SW Spain) have been analysed in order to reconstruct the paleoenvironmental evolution in the vicinity of the Betic seaways during the Messinian. The core consists of marine sediments ranging from the latest Tortonian to the early Pliocene. Changes in the abundance of certain marker species, planktonic/benthic ratio (P/B ratio), paleodepth estimated with a transfer function, content of sand grains and presence of glauconitic layers indicate a complete transgressive-regressive sea-level cycle from the bottom to the top of the section. An abrupt sea-level rise, from inner-middle shelf to middle slope, is recorded at the lowermost part of the core (latest Tortonian-earliest Messinian), followed by a relatively rapid shallowing from middle slope to outer shelf. Magnetobiostratigraphic data show These assemblages are dominated by Nonion fabum and Bulimina elongata, two taxa that are able to feed from continental low-quality organic matter, most likely derived from river run-off. The paleoenviromental evolution on the Atlantic side of Betic and Rifian seaways is similar during the Messinian, with a Messinian continuous sea-level lowering driven by regional tectonic uplift and upwelling-related waters reaching the upper slope. This study will further contribute to understand the role of tectonics on the sea-level changes as well as on the closure of the Atlantic-Mediterranean gateways that led to the MSC, and on the paleoceanography on the Atlantic sides of these corridors.

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Section: Methodsmentioning

confidence: 99%

“…Enhanced river run-off influence is also suggested by the low P/B ratio values in the muddy interval (Fig. 4), because planktic foraminifera do not tolerate brackish waters (Arnold and Parker, 1999;Retailleau, et al, 2009). …”

mentioning

confidence: 96%

Messinian paleoenvironmental evolution in the lower Guadalquivir Basin (SW Spain) based on benthic foraminifera

Pérez-Asensio

Aguirre

Schmiedl

et al. 2012

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…There is scope for review and better definition of the global provinces. Their distribution may not be as simple as presently envisaged [5].…”

Section: Discussionmentioning

confidence: 85%

“…Ordinal data are also of interest because Kidwell [33] found that fossil mollusc faunas commonly preserve the species rank signal of their source living faunas and may mitigate the effects of taphonomy and time averaging on quantitative data [5,34]). A few local data are relevant.…”

Section: Ordinal Classification and Taphonomymentioning

confidence: 99%

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Planktonic Foraminifera as Oceanographic Proxies: Comparison of Biogeographic Classifications Using Some Southwest Pacific Core-Top Faunas

Scott

2013

ISRN Oceanography

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The distribution of planktonic foraminifera, as free-floating protists, is largely controlled by hydrography. Their death assemblages in surficial sediments provide proxy data on upper water mass properties for paleoceanography. Techniques for mapping faunal distributions for this purpose are compared in a study of 35 core-top samples that span the Subtropical Front in the Southwest Pacific. Faunas are analyzed by taxon composition, order of dominant taxa, and abundance. Taxon composition (presence-absence data) and dominant taxa (ordinal data) recognize groups of sites that approximate major water mass distributions (cool subtropical water, subantarctic water) and clearly define the location of the Subtropical Front. Quantitative data (relative abundances) more closely reflect the success of taxa in upper water mass niches. This information resolves groups of sites that reflect differences in intrawater mass hydrography. Comparisons suggest that abundance data should provide much better oceanographic resolution globally than the widely used ordinal biogeographic classification that identifies only Tropical, Subtropical Transitional, Subpolar and Polar provinces. As the data are strongly structured by variance in the abundance of Globigerina bulloides, Globorotalia inflata, Neogloboquadrina incompta, and Neogloboquadrina pachyderma, comparable classifications result from most clustering strategies. Principal coordinates analysis best represents the configuration of sites in two dimensions.

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Modeling the distribution and seasonality ofNeogloboquadrina pachydermain the North Atlantic Ocean during Heinrich Stadial 1

2016

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Fossil shells of planktonic foraminifera serve as the prime source of information on past changes in surface ocean conditions. Because the population size of planktonic foraminifera species changes throughout the year, the signal preserved in fossil shells is biased toward the conditions when species production was at its maximum. The amplitude of the potential seasonal bias is a function of the magnitude of the seasonal cycle in production. Here we use a planktonic foraminifera model coupled to an ecosystem model to investigate to what degree seasonal variations in production of the species Neogloboquadrina pachyderma may affect paleoceanographic reconstructions during Heinrich Stadial 1 (∼ 18-15 cal ka B.P.) in the North Atlantic Ocean. The model implies that during Heinrich Stadial 1 the maximum seasonal production occurred later in the year compared to the Last Glacial Maximum (∼ 21-19 cal ka B.P.) and the preindustrial era north of 30 ∘ N. A diagnosis of the model output indicates that this change reflects the sensitivity of the species to the seasonal cycle of sea ice cover and food supply, which collectively lead to shifts in the modeled maximum production from the Last Glacial Maximum to Heinrich Stadial 1 by up to 6 months. Assuming equilibrium oxygen isotopic incorporation in the shells of N. pachyderma, the modeled changes in seasonality would result in an underestimation of the actual magnitude of the meltwater isotopic signal recorded by fossil assemblages of N. pachyderma wherever calcification is likely to take place.

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Biogeography of planktonic Foraminifera

Cited by 36 publications

References 0 publications

Messinian paleoenvironmental evolution in the lower Guadalquivir Basin (SW Spain) based on benthic foraminifera

Messinian paleoenvironmental evolution in the lower Guadalquivir Basin (SW Spain) based on benthic foraminifera

Planktonic Foraminifera as Oceanographic Proxies: Comparison of Biogeographic Classifications Using Some Southwest Pacific Core-Top Faunas

Modeling the distribution and seasonality ofNeogloboquadrina pachydermain the North Atlantic Ocean during Heinrich Stadial 1

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