TY - JOUR
AU - 
AB - Calibration of the random settling technique for calculation of absolute abundances of calcareous nannoplankton 1 2 3 4 1 Markus Geisen , Jörg Bollmann , Jens O. Herrle , Jörg Mutterlose and Jeremy R. Young The Natural History Museum, Palaeontological Dept., London SW7 5BD, Great Britain Eidgenössische Technische Hochschule, Geological Institute, Sonneggstr. 5, 8092 Zürich, Switzerland Universität Tübingen, Institut und Museum für Geologie und Paläontologie, Sigwartstr. 10, 72076 Tübingen, Germany Ruhr-Universität Bochum, Institut für Geologie, Universitätsstraße 150, 44801 Bochum, Germany email: M.Geisen@nhm.ac.uk ABSTRACT: We describe a device for random settling preparation of calcareous nannoplankton (coccolith) samples. The device allows easy draining and cleaning, as well as sedimentation at different heights of the water column through the use of different slide carriers. Reproducibility and accuracy of the device has been tested with standardised microbeads as spiking material. In applying counting techniques with different equations for determining absolute abundances, we discovered major anomalies in the calculated results that we interpreted as being due to the effect of convection currents within the device and the usage of elevated cover slides. A modified formula that corrects for the influence of elevated cover slides in random settling experiments is therefore proposed. Although the settling 
TI - Calibration of the Random Settling Technique for Calculation of Absolute Abundances of Calcareous Nannoplankton
JF - Micropaleontology
DO - 10.2307/1486125
DA - 1999-01-01
UR - https://www.deepdyve.com/lp/unpaywall/calibration-of-the-random-settling-technique-for-calculation-of-Frwz0Ll09p
DP - DeepDyve
ER -