Distribution and stem growth patterns of mangrove species along the Nakara River in Iriomote Island, Southwestern Japan |
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| Authors: | Tsutomu Enoki Moeko Ueda Daisuke Nanki Rempei Suwa Akio Hagihara |
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| Institution: | (1) Kasuya Research Forest, Kyushu University, 394 Tsubakuro, Sasaguri Fukuoka, 811-2415, Japan;(2) Faculty of Science, University of the Ryukyus, Nishihara, Okinawa, Japan;(3) Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, Japan |
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| Abstract: | We examined variations in stand structure and tree growth of a mangrove forest along two gradients: from the river mouth to
upper stream and from the riverside to inland, along the Nakara River, Iriomote Island, Japan. Bruguiera gymnorrhiza (L.) Lamk. occurred throughout the intertidal area, though Rhizophora stylosa Griff. and Kandelia candel (L) Druce did not occur upstream. Basal area and maximum tree height of B. gymnorrhiza decreased downstream. The growth rate in stem diameter of B. gymnorrhiza decreased downstream in relation with the soil salinity. The basal area and the maximum tree height of B. gymnorrhiza increased with the distance from the riverside. R. stylosa increased in stem diameter and growth rate toward the riverside. |
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| Keywords: | Growth rate Maximum tree height Rhizophoraceae River zonation Shoreline zonation |
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