Citation:

PANGAEA.927262

Name: Average shell size of plantkonic foraminifera from 28 stations in the Aegean and the Levantine Sea
Published: 2021-01-29
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Average shell size; Eastern Mediterranean; Planktonic foraminifera abundances

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Abstract:

For detailed quantitative micropalaeontological analysis, specimens of planktonic foraminifera were picked from about 3g of dry marine sediment, taken from the 1-2 topmost centimeters of the cores. After wet sieving, the dried coarse fraction was sieved through a 125 μm screen and split using an Otto micro-splitter into aliquots of at least 300 planktonic foraminifera specimens. The specimens were orientated and stabilized in separate cells on a Plumer microslide with tragacanth glue for and were photographed for assemblage size analysis. Images were acquired using a modular Leica M165 C fully apochromatic stereo microscope with an integrated 10 megapixel Leica IC90 E color camera (at 2× magnification) and processed using ImageJ software (version 1.50i). The image analysis system determines test 2-D (silhouette) areas and Feret's diameters for each aliquot. Foraminifera shells were positioned to capture the maximum silhouette area of each individual, corresponding to the umbilical or spiral sides, since the difference in average areas for the spiral and umbilical orientations was found for several species to be negligible (Marshall et al., 2013; doi:10.1002/palo.20034). Calibration for the silhouette area and Feret's diameter measurements was performed using a microscale image taken at the same magnification as the foraminiferal images (2×).

Keyword(s):

Average shell size; Eastern Mediterranean; Planktonic foraminifera abundances

Related to:

Zarkogiannis, Stergios; Kontakiotis, George; Antonarakou, A (2020): Recent planktonic foraminifera population and size response to Eastern Mediterranean hydrography. Revue de Micropaléontologie, 69, 100450, https://doi.org/10.1016/j.revmic.2020.100450

Coverage:

Median Latitude: 36.815120 * Median Longitude: 26.474570 * South-bound Latitude: 32.650000 * West-bound Longitude: 23.800000 * North-bound Latitude: 40.590000 * East-bound Longitude: 34.100000

Date/Time Start: 1998-01-22T02:36:00 * Date/Time End: 2007-02-02T15:50:00

Minimum Elevation: -3621.0 m * Maximum Elevation: -119.0 m

Event(s):

Aegeo_1992_M22-103 * Latitude: 36.900000 * Longitude: 26.750000 * Elevation: -395.0 m * Location: Eastern Mediterranean Sea * Method/Device: Gravity corer (GC)

Aegeo_1998_MNB5 * Latitude: 40.250000 * Longitude: 25.750000 * Elevation: -520.0 m * Location: Eastern Mediterranean Sea * Method/Device: MultiCorer (MUC)

Aegeo_1998_MNB6 * Latitude: 40.590000 * Longitude: 25.130000 * Elevation: -152.0 m * Location: Eastern Mediterranean Sea * Method/Device: MultiCorer (MUC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Zarkogiannis, Stergios
2	Latitude of event	Latitude		Zarkogiannis, Stergios
3	Longitude of event	Longitude		Zarkogiannis, Stergios
4	Elevation of event	Elevation	m	Zarkogiannis, Stergios
5	Cruise/expedition	Expedition		Zarkogiannis, Stergios
6	Station label	Station		Zarkogiannis, Stergios
7	Method/Device of event	Method/Device		Zarkogiannis, Stergios
8	Globigerinoides ruber sensu stricto, size average	G. ruber ss size	µm	Zarkogiannis, Stergios	Measured
9	Globigerinoides ruber sensu lato, size average	G. ruber sl size	µm	Zarkogiannis, Stergios	Measured
10	Globigerinoides ruber var. rosea, size average	G. ruber var. rosea size	µm	Zarkogiannis, Stergios	Measured
11	Globigerina bulloides, size average	G. bulloides size	µm	Zarkogiannis, Stergios	Measured
12	Orbulina universa, size average	O. universa size	µm	Zarkogiannis, Stergios	Measured
13	Globoturborotalita rubescens, size average	G. rubescens size	µm	Zarkogiannis, Stergios	Measured
14	Globigerinita glutinata, size average	G. glutinata size	µm	Zarkogiannis, Stergios	Measured
15	Trilobatus trilobus, size average	T. trilobus size	µm	Zarkogiannis, Stergios	Measured
16	Globigerinella siphonifera, size average	G. siphonifera size	µm	Zarkogiannis, Stergios	Measured
17	Neogloboquadrina pachyderma, size average	N. pachyderma size	µm	Zarkogiannis, Stergios	Measured
18	Turborotalita quinqueloba, size average	T. quinqueloba size	µm	Zarkogiannis, Stergios	Measured
19	Foraminifera, planktic, size average	Foram plankt size	µm	Zarkogiannis, Stergios	Measured	Average shell size
20	Foraminifera, planktic, size average	Foram plankt size	µm	Zarkogiannis, Stergios	Measured	Minimum shell size
21	Foraminifera, planktic, size average	Foram plankt size	µm	Zarkogiannis, Stergios	Measured	Maximum shell size

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

369 data points

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