Size distribution of Holocene planktic foraminifer assemblages


The size of any organism is influenced by the surrounding ecological conditions. In this study, we investigate the effects of such factors on the size spectra of planktic foraminiferal assemblages from Holocene surface sediments. We analyzed assemblages from 69 Holocene samples, which cover the major physical and chemical gradients of the oceans. On a global scale, the range of sizes in assemblages triples from the poles to the tropics. This general temperature-related size increase is interrupted by smaller sizes at temperatures characteristic of the polar and subtropical fronts, at 2°C and 17°C, respectively, as well as in upwelling areas. On a regional scale, surface water stratification, seasonality and primary productivity are highly correlated with the size patterns. Such environmentally controlled size changes are not only characteristic for entire assemblage, but also for the dominant single species.

Supplement to: Schmidt, Daniela N; Renaud, Sabrina; Bollmann, Jörg; Schiebel, Ralf; Thierstein, Hans R (2004): Size distribution of Holocene planktic foraminifer assemblages: biogeography, ecology and adaptation. Marine Micropaleontology, 50(3-4), 319-338

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Metadata Access
Creator Schmidt, Daniela N ORCID logo; Renaud, Sabrina ORCID logo; Bollmann, Jörg; Schiebel, Ralf ORCID logo; Thierstein, Hans R
Publisher PANGAEA
Publication Year 2004
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-6.130W, -65.821S, 14.143E, 89.983N); Southern East Pacific Rise; Angola Basin; Equatorial Atlantic; Walvis Ridge; Cape Basin; Namibia continental slope; Northeast Brasilian Margin; Brazil Basin; Arabian Sea; North Atlantic; Greenland Sea; Meteor Rise; Atlantic Ridge; Greenland Slope; Weddell Sea; Amundsen Basin; Agulhas Basin; Agulhas Ridge; South Atlantic; Southeast Pacific
Temporal Coverage Begin 1955-09-05T00:00:00Z
Temporal Coverage End 1998-05-09T23:22:00Z