Planktic foraminiferal populations and test flux in the eastern North Atlantic Ocean ...

• Main Authors: Schiebel, Ralf, Hemleben, Christoph
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2000
• Subjects: Multiple opening/closing net; FCA97; M6/7; M10/2; M11/1; M12/3; M21/1; M21/2; M21/3; M21/4; M21/5; M21/6; M26/1; M27/2; M36/2; M36/6; M42/3; POS200/6; POS231/3; POS247; Arquipelago; Meteor 1986; Poseidon; Institute for Geosciences, Christian Albrechts University, Kiel GIK/IfG; Joint Global Ocean Flux Study JGOFS; Paleoceanography at Tübingen University GeoTü; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.728676; https://doi.pangaea.de/10.1594/PANGAEA.728676

Planktic foraminiferal assemblages vary in response to seasonal fluctuations of hydrographic properties, between water masses, and after periodical changes and episodic events (e.g. reproduction, storms). Distinct annual variability of the planktic foraminiferal flux is also known from sediment trap data. In this paper we discuss the short-term impacts on interannual flux rates based on data from opening-closing net hauls obtained between the ocean surface and 500 m water depth. Data were recorded during April, May, June, and August at around 47°N, 20°W (BIOTRANS) in 1988, 1989, 1990, 1992, 1993, and during May 1989 and 1992 at 57°N, 20-22°W. Species assemblages closely resemble each other when comparing the mixed layer fauna with the fauna of the upper 100 m and the upper 500 m of the water column. In addition, species assemblages >100 µm are almost indistinguishable from assemblages that are >125 µm in test size. The standing stock of planktic foraminifers at BIOTRANS can vary by more than one order ... : Supplement to: Schiebel, Ralf; Hemleben, Christoph (2000): Interannual variability of planktic foraminiferal populations and test flux in the eastern North Atlantic Ocean (JGOFS). Deep Sea Research Part II: Topical Studies in Oceanography, 47(9-11), 1809-1852 ...