Benthic foraminiferal biodiversity response to changing Arctic palaeoclimate ...

• Main Authors: Wollenburg, Jutta Erika, Mackensen, Andreas, Kuhnt, Wolfgang
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2007
• Subjects: Gravity corer Kiel type; Kasten corer; ARK-III/3; ARK-VIII/3; ARK-IX/4; ARK-XIII/2; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Arctic Ocean; Barents Sea; Foraminifera*; Fram Strait; laptev; Laptev Sea; Yermak plateau
• Online Access: https://dx.doi.org/10.1594/pangaea.527976; https://doi.pangaea.de/10.1594/PANGAEA.527976

Four sediment cores recovered from 1000 to 2500 m water depth in the Arctic Ocean, tracing the inflowing Atlantic water from Fram Strait, Yermak Plateau, northern Barents Sea continental slope as far as the Laptev Sea, have been analyzed for species richness and diversity. Samples were wet sieved after freeze-drying using a 63-µm sieve. Where possible at least 300 specimens were counted from the size fraction >63 µm, however, samples from deglacial periods are often affected by carbonate dissolution. In such samples foraminiferal numbers are low. Samples containing less than 40 specimens were excluded from statistical analyses. Because we are aware that specimen numbers <100 specimen are still critical for H analyses, core sections containing less than 100 specimens are highlighted in the figures. Here, we will characterize biodiversity trends by the two most widely used biodiversity measurements, the information function H (Buzas and Gibson, 1969) with its decomposition equation ln(S) and ln(E) (Buzas ... : Supplement to: Wollenburg, Jutta Erika; Mackensen, Andreas; Kuhnt, Wolfgang (2007): Benthic foraminiferal biodiversity response to a changing Arctic palaeoclimate in the last 24.000 years. Palaeogeography, Palaeoclimatology, Palaeoecology, 255(3-4), 195-222 ...