Pigmented nanoflagellates grazing on Synechococcus: Seasonal variations and effect of flagellate size in the coastal ecosystem of subtropical western pacific
Resource
Microbial Ecology 58 (3): 548-557
Journal
Microbial Ecology
Journal Volume
58
Journal Issue
3
Pages
548-557
Date Issued
2009
Author(s)
Abstract
We investigated seasonal variation of grazing impact of the pigmented nanoflagellates (PNF) with different sizes upon Synechococcus in the subtropical western Pacific coastal waters using grazing experiments with fluorescently labeled Synechococcus (FLS). For total PNF, conspicuous seasonal variations of ingestion rates on Synechococcus were found, and a functional response was observed. To further investigate the impact of different size groups, we separated the PNF into four categories (10 microm). Our results indicated that the smallest PNF (10 microm PNFs showed significant seasonal variation. During the warm season, 3-5 microm PNF were responsible for the grazing of 12% of Synechococcus production, 5-10 microm PNF for 48%, and >10 microm PNF for 2%. Taken together, our results demonstrate that the PNF of 3-10 microm consumed most Synechococcus during the warm season and exhibited a significant functional response to the increase in prey concentration.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
05.pdf
Size
313.99 KB
Format
Adobe PDF
Checksum
(MD5):34b532dd03fd038ca188d1af9a596e0d