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The relative abundance (%) of planktonic foraminifera over time in core MD032607, located off the coast South Australia

The advent of deep-sea drilling in the 1950's prompted the use of planktonic foraminifera (unicellular protozans) as palaeoceanographic indicators. They provide a natural archive of past environmental changes due to their global distribution, their prolific productivity and sensitivity to environmental variations.The highest species abundance of foraminifera in core MD032607 was recorded by Globigerina bulloides (~45%) during the penultimate glacial period (MIS 6) and, generally, was the most abundant with an average abundance of 19.5%. The dominance of the sub-polar, transitional species, Ga. bulloides in this core suggests the influence of cold, nutrient-rich water during certain isotopic stages. Conversely, the dominant warm and oligotrophic species Globigerinoides ruber recorded its lowest abundance in Marine Isotope Stage (MIS) 6, and is totally removed from the record (0%) at 146K, 142K, and 139K yrs BP.

Data and Resources

Additional Info

Field Value
Title The relative abundance (%) of planktonic foraminifera over time in core MD032607, located off the coast South Australia
Type Dataset
Language English
Licence Creative Commons Attribution 2.5 Australia
Data Status inactive
Update Frequency never
Landing Page https://data.gov.au/data/dataset/ff3f53ac-cd06-4b86-a5fa-fd5f28ebc3cf
Date Published 2017-06-24
Date Updated 2023-08-11
Contact Point
Australian National University
michelle.spooner8@gmail.com
Temporal Coverage 2017-06-24 17:36:54
Geospatial Coverage {"type": "Polygon", "coordinates": [[[137.0, -40.0], [137.5, -40.0], [137.5, -39.5], [137.0, -39.5], [137.0, -40.0]]]}
Jurisdiction Commonwealth of Australia
Data Portal data.gov.au
Publisher/Agency Australian National University