IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page
A simplified 14C method for grazing measurements on natural planktonic populations
Daro, M.H. (1978). A simplified 14C method for grazing measurements on natural planktonic populations. Helgol. Wiss. Meeresunters. 31: 241-248
In: Helgoländer Wissenschaftliche Meeresuntersuchungen. Biologische Anstalt Helgoland: Hamburg. ISSN 0017-9957, more
Peer reviewed article  
Available in  Author 
Keywords
    Marine/Coastal; Brackish water; Fresh water
Author  Top 
Abstract
    The method used consists of adding highly radioactive material (40 µCi/l NaH14CO3) to sea water with its natural concentrations of zoo- and phytoplankton, incubating this water in the light, separating zoo- from phytoplankton after 1h or at the most 2h and measuring the radioactivity of both. Under such conditions, the concentration of the tracer in phytoplankton can be simplified as a linear function of time, and that of the zooplankton as a parabolic function of time. This simplification leads to an overestimation of grazing of at most 2-3%. Comparisons with the Coulter Counter method are given and discussed.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Author