Comparative reproductive phenology of subtropical mangrove communities at Manko Wetland, Okinawa Island, Japan
Comparative reproductive phenology of subtropical mangrove communities at Manko Wetland, Okinawa Island, Japan
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DOI：
10.1080/13416979.2017.1284032
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发表时间：
2017-02
影响因子：
1.5
通讯作者：
M. Kamruzzaman;A. Osawa;Kamara Mouctar;Sahadev Sharma
中科院分区：
文献类型：
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作者：
M. Kamruzzaman;A. Osawa;Kamara Mouctar;Sahadev Sharma
摘要对5年来亚热带地区木本植物、倒卵叶树和海鞘的生殖物候进行了调查和比较。根霉科的三种红树植物在整个年循环中都产生生殖器官，但倒卵叶红树除外。木霉全年开花，9月份产量最高，7月份产量最高。倒卵圆线虫的生殖器官有一个非常特殊的月周期。柱花草的花果产量在7月份最高，9月份繁殖体产量最高。花朵数以柱花草最多，其次是倒卵草和木本植物。但是，与其他两种植物相比，柱花草的繁殖体结实率最低。在柱花草中也观察到最大的繁殖体。这与其他两个物种的情况有显著不同。多元回归分析表明，月平均气温和日长对三个物种的生殖器官有显著影响。平均生殖器官产量分别占总凋落量的37.5%、18.7%和21.5%。
ABSTRACT We aimed to investigate and compare the reproductive phenology of Bruguiera gymnorrhiza, Kandelia obovata, and Rhizophora stylosa in subtropical area, over 5 years. The three mangrove species of the Rhizophorace family yielded reproductive organs throughout the entire annual cycle, with the exception of K. obovata. In case of B. gymnorrhiza, flowers were observed throughout the year, with a massive production in September, whereas propagule production was highest in July. Reproductive organs of K. obovata followed a very specific monthly periodicity. The highest production of flowers, fruits were observed in July, and massive production of propagule was observed in September for R. stylosa. The highest number of flowers was recorded in R. stylosa followed by K. obovata and B. gymnorrhiza. However, propagule setting was lowest in R. stylosa as compared to other two species. The largest propagule was also observed in R. stylosa. This was significantly different from that of other two species. Multiple regression analysis showed that reproductive organs of the three species were pronouncedly influenced by monthly mean air temperature and day length. Mean production of reproductive organs in B. gymnorrhiza, K. obovata, and R. stylosa contributed 37.5%, 18.7%, and 21.5% to the total litterfall, respectively.