Distribution of living benthic foraminifera in sediment cores of cruise M77 Leg 1 and 2, 63-2000 µm fraction
Citation
Mallon J, Glock N, Schönfeld J (2011). Distribution of living benthic foraminifera in sediment cores of cruise M77 Leg 1 and 2, 63-2000 µm fraction. PANGAEA - Publishing Network for Geoscientific and Environmental Data. Occurrence dataset https://doi.org/10.1594/pangaea.757092 accessed via GBIF.org on 2023-10-02.Description
Recent benthic foraminifera and their distribution in surface sediments were studied on a transect through the Peruvian oxygen minimum zone (OMZ) between 10 and 12°S. The OMZ with its steep gradients of oxygen concentrations allows to determine the oxygen-dependent changes of species compositions in a relatively small area. Our results from sediments of thirteen multicorer stations from 79 to 823 m water depth demonstrate that calcareous species, especially bolivinids dominate the assemblages throughout the OMZ. The depth distribution of several species matches distinct ranges of bottom water oxygen levels. The distribution pattern inferred a proxy which allows to estimate dissolved oxygen concentrations for reconstructing oxygen levels in the geological past.Taxonomic Coverages
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Chromistarank: kingdom
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Foraminiferarank: kingdom
Geographic Coverages
Event: M77/1_449-1, ; Event: M77/1_456-1, ; Event: M77/1_459-1, ; Event: M77/1_470-1, ; Event: M77/1_473-1, ; Event: M77/1_482-1, ; Event: M77/1_487-1, ; Event: M77/1_516-1, ; Event: M77/1_540-1, ; Event: M77/1_553-1, ; Event: M77/1_616-1, ; Event: M77/1_622-1, ; Event: M77/2_002-2, ;
Bibliographic Citations
Contacts
Jürgen Mallonoriginator
Nicolaas Glock
originator
Joachim Schönfeld
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: https://www.pangaea.de
Frank-Oliver Glöckner
administrative point of contact
Robert Huber
administrative point of contact