Living coccolith assemblages of surface sediment samples from the Pacific sector of the Southern Ocean ...

This study examined recent coccolith surface sediment assemblages across the Pacific sector of the Southern Ocean (from Punta Arenas, Chile toWellington, New Zealand). Twenty five stations located within 44.4°S to 65.4°S and 80.1°W to 174.5°E were selected in order to assess if and how the surface s...

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Bibliographic Details
Main Authors: Saavedra-Pellitero, Mariem, Baumann, Karl-Heinz
Format: Dataset
Language:English
Published: PANGAEA 2015
Subjects:
Event label
Latitude of event
Longitude of event
Elevation of event
DEPTH, sediment/rock
Coccoliths
Calcidiscus leptoporus
Emiliania huxleyi
Gephyrocapsa oceanica
Gephyrocapsa muellerae
Gephyrocapsa ericsonii
Gephyrocapsa spp.
Umbellosphaera tenuis
Helicosphaera carteri
Coccolithus braarudii
Syracosphaera spp.
Florisphaera profunda
Umbilicosphaera sp.
Acanthoica sp.
MultiCorer
ANT-XXVI/2
Polarstern
Center for Marine Environmental Sciences MARUM
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158
Antarctic
Arctic
New Zealand
Pacific
Southern Ocean
Antarc*
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.867497
https://doi.pangaea.de/10.1594/PANGAEA.867497
Description
Summary:This study examined recent coccolith surface sediment assemblages across the Pacific sector of the Southern Ocean (from Punta Arenas, Chile toWellington, New Zealand). Twenty five stations located within 44.4°S to 65.4°S and 80.1°W to 174.5°E were selected in order to assess if and how the surface sediment assemblages reflect the present-day coccolithophore community and surface-water oceanographic conditions. The highest numbers of coccoliths in the surface sediments are reached near the East Pacific Rise and close to the Subtropical Front, at the New Zealand Margin (>6x109 coccoliths/g of sediment). The dominant taxa are Emiliania huxleyi (including types A, B, B/C and C), Calcidiscus leptoporus, Gephyrocapsa spp. (including G. muellerae, G. oceanica and G. ericsonii), Umbellosphaera tenuis and Coccolithus braarudii. Despite the recognition of species morphotypes being hampered by carbonate dissolution at some locations, we observed that numbers generally decrease southward until almost a monospecific ... : This work was funded by DFG Fellowship SA 2593/1-1. ...

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