Stable oxygen isotope composition of planktonic foraminifera in the Canary Islands region ...

• Main Authors: Wilke, Iris, Meggers, Helge, Bickert, Torsten
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2009
• Subjects: Bottle, Niskin; Trap, sediment; Water sample; Multiple opening/closing net; POS212/3; VH96/1-2; POS237/3; M42/1a; Poseidon; Victor Hensen; Meteor 1986; Center for Marine Environmental Sciences MARUM; Geosciences, University of Bremen GeoB; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.737991; https://doi.pangaea.de/10.1594/PANGAEA.737991

Seasonal depth stratified plankton tows, sediment traps and core tops taken from the same stations along a transect at 29°N off NW Africa are used to describe the seasonal succession, the depth habitats and the oxygen isotope ratios (delta18O(shell)) of five planktic foraminiferal species. Both the delta18O(shell) and shell concentration profiles show variations in seasonal depth habitats of individual species. None of the species maintain a specific habitat depth exclusively within the surface mixed layer (SML), within the thermocline, or beneath the thermocline. Globigerinoides ruber (white) and (pink) occur with moderate abundance throughout the year along the transect, with highest abundances in the winter and summer/fall season, respectively. The average delta18O(shell) of G. ruber (w) from surface sediments is similar to the delta18O(shell) values measured from the sediment-trap samples during winter. However, the delta18O(shell) of G. ruber (w) underestimates sea surface temperature (SST) by 2 °C in ... : Supplement to: Wilke, Iris; Meggers, Helge; Bickert, Torsten (2009): Depth habitats and seasonal distributions of recent planktic foraminifers in the Canary Islands region (29°N) based on oxygen isotopes. Deep Sea Research Part I: Oceanographic Research Papers, 56(1), 89-106 ...