Skip Navigation

This Article
Right arrow Full Text
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 Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (8)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Odate, T.
Right arrow Articles by Imai, K.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Odate, T.
Right arrow Articles by Imai, K.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

JOURNAL OF PLANKTON RESEARCH | VOLUME 25 | NUMBER 12 | PAGES 1497-1505 | 2003
© Oxford University Press; all rights reserved

Seasonal variation in chlorophyll-specific growth and microzooplankton grazing of phytoplankton in Japanese coastal water

T. Odate* and K. Imai1

National Institute of Polar Research, 1-9-10 Kaga, Itabashi-Ku, Tokyo 173-8515 and 1 Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano-Ku, Tokyo 164-8639, Japan

* Corresponding Author: odate{at}nipr.ac.jp

Chlorophyll-specific growth (µ) and grazing mortality rates (g) due to microzooplankton (grazers of <200 µm) were estimated, based on the dilution method, in surface waters collected at four stations in Funka Bay, Japan, from December 1995 to March 1997. From May to October, the mean µ and g were 0.66 ± 0.44 day-1 (n = 21) and 0.60 ± 0.31 day-1 (n = 21), respectively. The estimated chlorophyll variation was 0.02 ± 0.31 µg l-1 day-1 (n = 21), which is consistent with field observations in this bay. On the other hand, µ was 0.51 ± 0.37 day-1 (n = 4) during the spring bloom (February and March). There was no significant difference between the mean µ in summer and in the spring bloom (P > 0.05). However, g during the bloom (0.15 ± 0.09 day-1) (n = 4) was significantly lower than in summer (P < 0.01). These results suggest that the low g was one of the factors contributing to the development of the spring bloom. On a seasonal basis, it was estimated that 83 and 39% of phytoplankton production were grazed by microzooplankton in summer and winter–spring seasons, respectively. The seasonal variation in the microzooplankton grazing pressure seems to result from the dominant size class of the phytoplankton community of this bay, i.e. picophytoplankton (<2 µm) predominate in summer, while phytoplankton >10 µm prevail in winter–spring.


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
R. Palomares-Garcia, J. J. Bustillos-Guzman, and D. Lopez-Cortes
Pigment-specific rates of phytoplankton growth and microzooplankton grazing in a subtropical lagoon
J. Plankton Res., December 1, 2006; 28(12): 1217 - 1232.
[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.