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Bacterial Decomposition of Avicennia marina Leaf Litter from Al-khor (Qatar-Arabian Gulf)

Author(s): Adel M. Mahasneh

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 1;
Issue: 8;
Start page: 717;
Date: 2001;
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Keywords: Marine bacteria | A. marine | decomposition | sea-water

Overall rate of bacterial decomposition of Avicennia marina L. leaves of 0.34% day-1 was recorded on dry weight basis after 256 days of in situ incubation. Initial loss of 68.45% was observed after first 108 days and additional 20.66% loss was achieved at the end of the experiment after 256 days. Decomposing leaf litter samples harbored variable mean counts of bacteria ranging from 146 x106 of amylolytic bacteria to the lowest of 0.029X106 of the spore formers per gram wet weight. The dominant bacterial groups during decomposition were non spore formers and were in the order amylolytic > proteolytic > cellulolytic > lipolytic > spore formers. Highest decomposition percentage was observed during warm months.
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