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Authors Fong, CW; Lee, SY; Wu, RSS
Author Full Name Fong, CW; Lee, SY; Wu, RSS
Title The effects of epiphytic algae and their grazers on the intertidal seagrass Zostera japonica
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords Zoslera japonica; epiphytes; grazing; Clithon; caging experiment
Keywords Plus PAPUA-NEW-GUINEA; MARINA L; COMMUNITY STRUCTURE; WESTERN AUSTRALIA; SPECIES RICHNESS; COCKBURN SOUND; EELGRASS; GROWTH; BIOMASS; LEAVES
Abstract The impact of the dominant grazers (Clithon spp.) of epiphytic algae on the biomass and percentage cover of a population of the intertidal seagrass Zostera japonica was investigated at Lai Chi Wo, northeast Hong Kong. The population density of Clithon spp. followed a seasonal pattern, varying between <1400 in summer to >2800 individuals m(-2) in winter. High population densities of the gastropods were temporally correlated with high biomass of epiphytic algae on the surface of Z. japonica. An exclusion experiment using full, half and open fences to manipulate the density of Clithon spp. resulted in significant differences in the biomass of the epiphytes between the full fences and the other two treatments after 47 days. The percentage cover of Z. japonica also decreased significantly in the full fence treatment after 120 days, as a result of increased sloughing of leaves. These results suggest that epiphytic algae and their grazers play an important role in the growth and survival of Z. japonica, and such interactions should be considered in the conservation of the species. (C) 2000 Elsevier Science B.V. All rights reserved.
Author Address Univ Hong Kong, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China; City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China
Reprint Address Lee, SY (corresponding author), Griffith Univ, Sch Environm & Appl Sci, PMB 50 GCMC, Nathan, Qld 9726, Australia.
E-mail Address joe.lee@mailbox.gu.edu.au
ResearcherID Number Wu, Rudolf/B-4203-2010; Lee, Joe S. Y./B-9185-2008
ORCID Number Lee, Joe S. Y./0000-0001-9336-2323
Times Cited 37
Total Times Cited Count (WoS, BCI, and CSCD) 46
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date AUG
Year Published 2000
Volume 67
Issue 4
Beginning Page 251
Ending Page 261
Digital Object Identifier (DOI) 10.1016/S0304-3770(00)00101-7
Page Count 11
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number 334GK
Unique Article Identifier WOS:000088178600001
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