Morphology and size of Neogloboquadrina pachyderma in the North Atlantic ...

• Main Authors: Moller, Tobias F, Schulz, Hartmut, Kucera, Michal
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: Neogloboquadrina pachyderma; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.789413; https://doi.pangaea.de/10.1594/PANGAEA.789413

The variability in size and shape of shells of the polar planktonic foraminifer Neogloboquadrina pachyderma have been quantified in 33 recent surface sediment samples throughout the northern Atlantic Ocean and correlated with the properties of the ambient surface waters. The aim of the study was to determine whether any of the morphological features could be used to reconstruct sea surface properties in the polar realm of the North Atlantic, where most paleotemperature proxies appear to fail. The analyses revealed that shell morphology is only weakly controlled by habitat properties, whereas shell size showed a strong correlation with sea surface temperature. The regression of mean shell size on sea surface temperature revealed the presence of two trends among the sinistrally coiled shells: a continuous increase in shell size with decreasing SST in sediments deposited under polar water masses and a continuous increase in shell size with increasing SST in samples from transitional waters. The second trend ... : Supplement to: Moller, Tobias F; Schulz, Hartmut; Kucera, Michal (2013): The effect of sea surface properties on shell morphology and size of the planktonic foraminifer Neogloboquadrina pachyderma in the North Atlantic. Palaeogeography, Palaeoclimatology, Palaeoecology, 391(A), 34-48 ...