Department of Animal Science and Fishery, Faculty of Agriculture and Food Sciences, Universiti Putra Malaysia Bintulu Sarawak
Faculty of Agriculture, Universiti Putra Malaysia
抄録
This study in a coastal lagoon of Merchang Terengganu, east coast of Peninsular Malaysia evaluated the morphological characteristics, shoot density and biomass for Halophila in pure and mixed population with Halodule pinifolia (Miki) den Hartog. Both species inhabited the silt and sand substrates at depth of about 1.9 m to 2.0 m. They are well adapted and tolerated a range of micro-ecology; pH of 6.57-7.32, wide salinity differences of 9.42-34.47 psu, conductivity 16.14-52.27 ms/cm, and light availability of 446.63-624.1 lux. Morphologically, there are two forms for Halophila (a) small-leaved in pure population and those mixed with the short-leaved, (b) big-leaved with the long-leaved Halodule pinifolia. Both forms have variable leaf shapes, a respond to the wide and frequent fluctuation in water salinity. Leaves possessed red or purplish spots or blotches with more spots and blotches in leaves of Halophila in pure population. These spots or blotches are believed to be UV-blocking pigments for protection of plants exposed directly to strong sun-light during low tides. Shoot density of 79.08±38.02 shoots/100cm2; is comparatively higher in pure Halophila population compared with 26.33±13.20 shoots/100cm2 and 64.00±17.09 shoots/100cm2 for small-leaved and big-leaved Halophila sp. respectively. Halophila biomass (AG and BG) exhibit similar trend as those observed for shoot density. In pure or mixed Halophila population the majority of the biomasses (63-77% of the total) were in the belowground parts (rhizome and roots). Although Halophila sp. is a smaller size seagrass, for propagation they would need extensive rhizome networks buried in the substrates.
内容記述
Proceedings of 4th JSPS-VAST Joint Seminar on 'Coastal Marine Science', Hai Phong, Viet Nam, 26-28 October 2009
Oceanography
雑誌名
Coastal marine science
巻
34
号
1
ページ
108 - 112
発行年
2010-08-20
ISSN
13493000
書誌レコードID
AA11957899
日本十進分類法
452
出版者
International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo
出版者別名
東京大学大気海洋研究所国際沿岸海洋研究センター
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Morphological characteristics, shoot density and biomass variability of Halophila sp. in a coastal lagoon of the east coast of Malaysia
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