西双版纳热带季节雨林自然和模拟积水树洞内水生生物多样性研究

Aquatic Organism Diversity in Natural and Artificial Water-filled Tree Holes in Seasonal Tropical Rainforest in Xishuangbanna

积水树洞为丰富的水生生物类群提供特殊的栖息地。然而,我国积水树洞中的水生群落尚未得到充分记录,也没有模拟树洞试验。本研究在调查中国西双版纳热带季节雨林中的自然积水树洞的同时,也利用人工容器进行了积水树洞模拟试验,更加全面充分地了解水生群落类群的组成以及检测模拟树洞试验在国内森林生态系统内的可行性。结果表明,积水树洞内水生类群丰富,模拟树洞和自然树洞中双翅目幼虫都是主要类群。自然树洞内的多数物种在模拟树洞内被发现。模拟树洞能够为水生生物提供与自然树洞相似的生存环境,模拟树洞或将成为国内研究积水树洞内水生群落便利有效的工具。

Water-filled tree holes provide special microhabitats for harboring diverse aquatic organisms. However, the aquatic communities in water-filled tree holes have not been fully recorded in China, and artificial water-filled tree holes experiment have not been done yet. In this study, we investigated the natural water-filled tree holes in Xishuangbanna tropical seasonal rainforest of China, and conducted an experiment of artificial water-filled tree holes in artificial containers, so as to fully understand the composition of communities in water-filled tree holes and test the feasibility of artificial water-filled tree holes experiment in domestic forest ecosystems. The results showed that there were abundant aquatic taxa groups in water-filled tree holes, and larvae of Dipteran were dominant groups in both artificial and natural water-filled tree holes. Most species in natural water-filled tree holes were found in artificial water-filled tree holes. Artificial water-filled tree holes can provide aquatic organisms with a similar living environment to natural water-filled tree holes. Artificial water-filled tree holes may become a convenient and effective tool for studying aquatic communities in water-filled tree holes in China.