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Publication Type J
Authors Sridhar, KR; Karamchand, KS; Sumathi, P
Author Full Name Sridhar, Kandikere R.; Karamchand, Kishore S.; Sumathi, Prabhu
Title Fungal colonization and breakdown of sedge (Cyperus malaccensis Lam.) in an Indian mangrove
Source BOTANICA MARINA
Language English
Document Type Article; Proceedings Paper
Conference Title 11th International Marine and Freshwater Mycology Symposium
Conference Date NOV, 2009
Conference Location Taichung, TAIWAN
Author Keywords Cyperus malaccensis; decomposition; fungi; mangroves; sedge
Keywords Plus LEAF-LITTER; RHIZOPHORA-MANGLE; VERTICAL-DISTRIBUTION; FILAMENTOUS FUNGI; MARINE FUNGI; EAST-COAST; HONG-KONG; DECOMPOSITION; LEAVES; DEGRADATION
Abstract We studied patterns of fungal colonization, mass loss and biochemical changes during decomposition of the dominant mangrove sedge Cyperus malaccensis in a mangal located in southwestern India. Litter bags containing dried bracts, basal stem and top stem were introduced into a sedge sward in a mid-tidal zone for periods of up to 8 weeks (April-June 2005). After retrieval of sedge substrates and incubation in the laboratory, 19 fungi (10 anamorphs, 8 ascomycetes and one zygomycete) were found. Terrestrial fungi dominated over the first 2-3 weeks. Later, in spite of falling water temperatures and salinity, they were replaced by typical mangrove/marine ascomycetes and anamorphs. Up to 79% of bract mass loss occurred in 4 weeks; respective losses for basal stems and top stems were 88% and 51% through 8 weeks. The estimated durations of 50% mass loss (t(50)) were 4.5, 10.9 and 22.9 days for bract, basal stem and top stem, respectively. Accordingly, there were significant differences in daily decay coefficients (k) among substrates. Organic carbon and phenolics decreased steadily in all substrates. Phosphorus concentrations decreased, attained a minimum and increased again, reaching final concentrations similar to initial values. Nitrogen concentration increased through the end of the experiment. Cellulase, xylanase and pectinase in all sedge substrates generally peaked within 4 weeks. This is the first study on decomposition of the macrophyte C. malaccensis.
Author Address [Sridhar, Kandikere R.; Karamchand, Kishore S.] Mangalore Univ, Dept Biosci, Mangalore 574199, Karnataka, India; [Sumathi, Prabhu] Mangalore Univ, Dept Stat, Mangalore 574199, Karnataka, India
Reprint Address Sridhar, KR (reprint author), Mangalore Univ, Dept Biosci, Mangalore 574199, Karnataka, India.
E-mail Address sirikr@yahoo.com
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Cited Reference Count 68
Times Cited 5
Total Times Cited Count (WoS, BCI, and CSCD) 5
Publisher WALTER DE GRUYTER & CO
Publisher City BERLIN
Publisher Address GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY
ISSN 0006-8055
29-Character Source Abbreviation BOT MAR
ISO Source Abbreviation Bot. Marina
Publication Date DEC
Year Published 2010
Volume 53
Issue 6
Special Issue SI
Beginning Page 525
Ending Page 533
Digital Object Identifier (DOI) 10.1515/BOT.2010.062
Page Count 9
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number 688RF
Unique Article Identifier WOS:000284869000007
Plants associated with this reference

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