Feeding selectivity of calanoid copepods on phytoplankton in jangmok bay, south coast of Korea SCOPUS KCI

Title
Feeding selectivity of calanoid copepods on phytoplankton in jangmok bay, south coast of Korea
Author(s)
Jang, M.-C.; Shin, K.; Lee, T.; Noh, I.
KIOST Author(s)
Shin, Kyoung Soon(신경순)
Publication Year
2010
Abstract
Grazing impacts of calanoid copepods on size-fractionated phytoplankton biomass [chlorophyll (Chl)-a] were measured in Jangmok Bay, Geoje Island, Korea, monthly from November 2004 to October 2005. The ingestion rate of calanoid copepods on total phytoplankton biomass ranged between 1 and 215 ng Chl-a copepod-1 day-1 during bottle incubations. Results indicated that microphytoplankton (>20 μm) was the primary food source for calanoid copepods in grazing experiments on 3 phytoplankton size categories (>3 μm, 3-20 μm, and >20 μm). The ingestion rate on microphytoplankton showed a significant increase (r= 0.93, p <0.01) with Chl-a concentration. Nanophytoplankton (3-20 μm) showed a negative ingestion rate from June 2005 to October 2005, but the reason is not completely understood. Calanoid copepods were unable to feed efficiently on picophytoplankton (<3 μm) due to unfavorable size. Calanoid copepods removed between 0.1% and 27.7% (average, 3.6 ±15.8%) of the phytoplankton biomass daily during grazing experiments. Grazing pressure was high in winter and early spring (January-March: 15.6-27.7%), while low in summer (June-August:-33.1-0.0%) and autumn (September-November:-1.4-5.1%). Results suggest that calanoid copepods play an important role in controlling the biomass and size structure of phytoplankton in winter and early spring. © 2010 Korea Ocean Research & Development Institute (KORDI) and the Korean Society of Oceanography (KSO) and Springer Netherlands.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4185
DOI
10.1007/s12601-010-0009-0
Bibliographic Citation
Ocean Science Journal, v.45, no.2, pp.101 - 111, 2010
Subject
biomass; crustacean; feeding; food organism; grazing pressure; ingestion rate; phytoplankton; seasonal variation; Goeje Island; Jangmok Bay; South Korea; South Kyongsang; Calanoida; Copepoda
Keywords
Calanoid copepods; Grazing; Jangmok Bay
Type
Article
Language
English
Document Type
Article
Related Researcher
Research Interests

Plankton ecology and physiology,Risk assessment,Ship ballast water,플랑크톤 생리, 생태,위해성평가,선박평형수

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse