Benthic foraminifera in surface sediments, South Atlantic ...

• 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; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.53139; https://doi.pangaea.de/10.1594/PANGAEA.53139

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 ...