Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Stramski, D.
Right arrow Articles by Kiefer, D. A.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Stramski, D.
Right arrow Articles by Kiefer, D. A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 14 | NUMBER 7 | PAGES 961-977 | 1992
© Oxford University Press

research-article

Changes in the optical properties of a particle suspension caused by protist grazing

Dariusz Stramski, Fereidoun Rassoulzadegan1 and Dale A. Kiefer

Department of Biological Sciences, University of Southern California Los Angeles, CA 90089-0371, USA 1Station Zoologique B.P. 28, 06230 Villefranche-sur-Mer, France

Received on July 3, 1991; accepted on February 10, 1992 The effect of grazing within microbial food webs on the optical properties of seawater was studied in the laboratory by inoculating a culture of cyanobacteria Synechocystis with an oligotnchous ciliate, Strombidium. During the 4 week experiment sequential measurements of spectral absorption and scattering coefficients were supplemented by determinations of the particle size distribution, prey and predator numbers and pigment concentration. All of these parameters changed dramatically during the course of the experiment. Protist grazing caused a large decrease in the concentration of particles that ranged from 0.75 to 2.5 µm in size; Synechocystis is within this range. On the other hand, the concentration of particles <0.75 µm increased. These fine particles consist of small heterotrophic bacteria and disintegrated detrital material. In addition, the concentration of particles in the range of 2.5–16 µm also increased; this size range included a growing population of pigmented flagellates and detritus. Such particle dynamics were associated with large decreases in both the scattering and the absorption coefficient. The spectral shape of the scattering coefficient flattened, and the spectral absorption coefficient shifted to enhanced absorption at shorter wavelengths. These changes suggest that detrital particles and pigmented microflagellates were the dominant contributors to light scattering and absorption at the end of the experiment.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J PLANKTON RESHome page
S. G. H. Simis, M. Tijdens, H. L. Hoogveld, and H. J. Gons
Optical changes associated with cyanobacterial bloom termination by viral lysis
J. Plankton Res., September 1, 2005; 27(9): 937 - 949.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.