Skip to main content

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

Preservation of the light field in turbid lake and river water in laboratory-scale enclosure
Rijkeboer, M.; Gons, H.J.; Kromkamp, J. (1993). Preservation of the light field in turbid lake and river water in laboratory-scale enclosure. J. Plankton Res. 15(5): 517-530. http://dx.doi.org/10.1093/plankt/15.5.517
In: Journal of Plankton Research. Oxford University Press: New York,. ISSN 0142-7873; e-ISSN 1464-3774, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal

Authors  Top 
  • Rijkeboer, M., more
  • Gons, H.J.
  • Kromkamp, J.

Abstract
    The laboratory-scale enclosure (LSE), as a physical model of the water column, has been introduced for studies of seston dynamics in shallow, mixed lakes. Preserving the ‘natural’ underwater light climate was among the design criteria. However, lateral exchange of light between the LSE cylinder and its water bath caused deviations from conditions in the water column in situ. Two modifications of the original design are introduced by providing the LSE cylinder with (i) a masking plate and (ii) a reflective coating. The light fields in the original and modified designs are compared for Osciiiatoria limnetica culture and Western Scheldt Estuary water. These test suspensions had dry weight concentrations of ~50 mg l-1 and differed widely in scattering to absorption ratios, i.e. 4 and 12 for the culture and natural water, respectively. Using the reflective coating, the LSE provided an underwater light field conforming to general theory for diffuse attenuation and reflectance. Using the masking plate may suffice for cultures of cyanobacteria, but the reflective coating is needed for studies of phytoplankton growth in relation to the optical conditions in turbid lake and river water.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors