Plant-pollinator interactions in tropical monsoon forests in Southeast Asia.
Plant-pollinator interactions in tropical monsoon forests in Southeast Asia.
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DOI：
10.3732/ajb.0800114
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发表时间：
2008-11
影响因子：
3
通讯作者：
Makoto Kato;Yasuyuki Kosaka;A. Kawakita;Y. Okuyama;Chisato Kobayashi;Thavy Phimminith;Daovorn Thongphan-Daovorn-Thongph
中科院分区：
文献类型：
--
作者：
Makoto Kato;Yasuyuki Kosaka;A. Kawakita;Y. Okuyama;Chisato Kobayashi;Thavy Phimminith;Daovorn Thongphan-Daovorn-Thongph
不同植物群和植被类型的森林中有不同的访花者组合，不同森林中的植物-传粉者相互作用也不同。在季风占主导地位的东亚和东南亚，气候沿着纬度有一个特有的梯度，形成了广泛的森林类型，可能有多种多样的传粉者群落。为了检测植物-传粉者相互作用的地理模式，我们调查了研究最少的森林类型中的开花物候和传粉者组合，即，老挝万象平原的热带季风森林。在整个5年的研究中，我们观察到171种植物开花，并检测到145种花访客。全年都有开花，但开花植物的数量在旱季结束时达到高峰。占主导地位的树冠树木，包括龙脑香科，每年开花，与东南亚热带雨林中发生的超年度一般开花形成对比。在134种本地植物中，有68种是由雨燕传粉的，其他的是由鳞翅目、甲虫、苍蝇或其他昆虫传粉的。在观察到的蜜蜂，木蜂，megachilids，蜜蜂主要贡献了树冠树木授粉，而长舌Amegilla蜜蜂授粉不同的多年生植物长花冠管。这是第一个在亚洲热带季风森林生态系统中进行的植物-传粉者相互作用的群落水平研究。
Forests with different flora and vegetation types harbor different assemblages of flower visitors, and plant-pollinator interactions vary among forests. In monsoon-dominated East and Southeast Asia, there is a characteristic gradient in climate along latitude, creating a broad spectrum of forest types with potentially diverse pollinator communities. To detect a geographical pattern of plant-pollinator interactions, we investigated flowering phenology and pollinator assemblages in the least-studied forest type, i.e., tropical monsoon forest, in the Vientiane plain in Laos. Throughout the 5-year study, we observed 171 plant species blooming and detected flower visitors on 145 species. Flowering occurred throughout the year, although the number of flowering plant species peaked at the end of dry season. The dominant canopy trees, including Dipterocarpaceae, bloomed annually, in contrast to the supra-annual general flowering that occurs in Southeast Asian tropical rain forests. Among the 134 native plant species, 68 were pollinated by hymenopterans and others by lepidopterans, beetles, flies, or diverse insects. Among the observed bees, Xylocopa, megachilids, and honeybees mainly contributed to the pollination of canopy trees, whereas long-tongued Amegilla bees pollinated diverse perennials with long corolla tubes. This is the first community-level study of plant-pollinator interactions in an Asian tropical monsoon forest ecosystem.