The role of microzooplankton grazing in the microbial food web of a tropical mangrove estuary

Yong, Yu Lin and Lee, Choon Weng and Bong, Chui Wei and Chew, Li Lee and Chong, Ving Ching (2022) The role of microzooplankton grazing in the microbial food web of a tropical mangrove estuary. Estuarine Coastal and Shelf Science, 275. ISSN 0272-7714, DOI

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In the Matang Mangrove Forest Reserve (MMFR), the role of microzooplankton (20-200 mu m) grazing on phytoplankton as a channel for carbon transfer to higher trophic levels was investigated. Our results showed that primary production was higher during the southwest monsoon (SWM) (1905 +/- 1478 mu gCl(-1)d(-1)) than in the northeast monsoon (NEM) (708 +/- 474 mu gCl(-1)d(-1)). Microzooplankton grazing was tightly coupled to primary production in both SWM and NEM, accounting for 97% and 68% of primary production, respectively. Both primary production (activation energy: 1.29 +/- 0.54 eV) and microzooplankton grazing (2.05 +/- 0.63 eV) showed temperature dependency, and revealed a shift towards heterotrophy with seawater warming, specifically at temperatures above 32 degrees C. As a conclusion, the microbial food web in MMFR is characterised by high primary production that was efficiently grazed by microzooplankton.

Item Type: Article
Funders: Ministry of Education, Malaysia (Grant No: IOES-2014D & FP017- 2012A), Asia -Pacific Network for Global Change Research (Grant No: CRRP2020-06MY-Loh)
Uncontrolled Keywords: Tintinnids; Aloricate ciliates; Tropical estuary; Peninsular Malaysia; Primary production; Microbial loop
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Divisions: Faculty of Science > Institute of Biological Sciences
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Nov 2023 02:43
Last Modified: 08 Nov 2023 02:43

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