| 要旨トップ | 目次 | 日本生態学会第56回全国大会 (2009年3月,盛岡) 講演要旨


一般講演(口頭発表) I1-08

Litter production of mangrove Kandelia obovata stand at Manko Wetland, Okinawa Island

Sahadev Sharma*(Graduate Schoolof Engineering and Science, University of the Ryukyus, Okinawa 903-0213, Japan), Kangkuso Analuddin (Graduate Schoolof Engineering and Science, University of the Ryukyus, Okinawa 903-0213, Japan), A.T.M. Rafiqul Hoque (Graduate Schoolof Engineering and Science, University of the Ryukyus, Okinawa 903-0213, Japan), Rempei Suwa (Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan), Akio Hagihara (Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan)

Litterfall in a Kandelia obovata (S., L.) Yong stand was quantified monthly over three years. Using the stepwise method, leaf litterfall showed significant positive relations with monthly mean air temperature and maximum wind speed. Stipule and flower litterfalls showed a significant positive relation with monthly mean air temperature. Propagule litterfall did not depend on the climatic variables. Branch litterfall strongly related with monthly maximum wind speed. Total litterfall after the first typhoon was the highest, while the successive typhoon never increased the total litterfall. The stipule litterfall, an indicator of new leaves, positively correlated to the leaf litterfall, which suggests that the leaf litterfall followed the production of new leaves. The stipule litterfall decreased up to a lower limit of the new leaves with increasing flower-propagule litterfall.


日本生態学会