Benthic foraminifera in surface sediments, South Atlantic ...

Sixty surface sediment samples from the eastern South Atlantic Ocean including the Walvis Ridge, the Angola and Cape basins, and the Southwest African continental margin were analysed for their benthic foraminiferal content to unravel faunal distribution patterns and ecological preferences.Live (sta...

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Bibliographic Details
Main Authors: Schmiedl, Gerhard, Mackensen, Andreas, Müller, Peter J
Format: Dataset
Language:English
Published: PANGAEA 1997
Subjects:
Campaign of event
Event label
Latitude of event
Longitude of event
Date/Time of event
Elevation of event
DEPTH, sediment/rock
Porosity
Calcium carbonate
Carbon, organic, total
Accumulation rate, total organic carbon
Foraminifera, benthic living
Foraminifera, benthic dead
Foraminifera, benthic, standing stock
Foraminifera, benthic, number of species
Miliolina live
Miliolina dead
Textulariina live
Textulariina dead
Giant box corer
MultiCorer
Calculated
Element analyser CHN
Counting >125 µm fraction
M6/6
M12/1
M20/2
ANT-IX/4
Meteor 1986
Polarstern
Geosciences, University of Bremen GeoB
Andreas
South Atlantic Ocean
Online Access:https://dx.doi.org/10.1594/pangaea.53139
https://doi.pangaea.de/10.1594/PANGAEA.53139
Description
Summary:Sixty surface sediment samples from the eastern South Atlantic Ocean including the Walvis Ridge, the Angola and Cape basins, and the Southwest African continental margin were analysed for their benthic foraminiferal content to unravel faunal distribution patterns and ecological preferences.Live (stained with Rose Bengal) and dead faunas were counted separately and then each grouped by Q-mode principal component analysis into seven principal faunal end-members. Then, multiple regression technique was used to correlate Recent assemblages with available environmental variables and to finally differentiate between four principal groups of environmental agents acting upon the generation of benthic foraminiferal assemblages: (1) seasonality of food supply and organic carbon flux rates, together with oxygen content in the pore and bottom waters; (2) lateral advection of deep-water masses; (3) bottom water carbonate corrosiveness; and (4) energetic state at the benthic boundary layer and grain size composition of ... : Supplement to: Schmiedl, Gerhard; Mackensen, Andreas; Müller, Peter J (1997): Recent benthic foraminifera from the eastern South Atlantic Ocean: dependence on food supply and water masses. Marine Micropaleontology, 32(3-4), 249-287 ...

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