东北山地水生鞘翅目昆虫多样性的比较研究

调查了东北长白山自然保护区及辽宁省医巫闾山两地静水水体中水生甲虫．结果表明，长白山阔叶红松林生态系统水生甲虫比辽宁医巫闾山农林复合生态系统水生甲虫物种丰富的多．长白山水生甲虫共有１７个属２９个种，而辽宁医巫闾山水生甲虫只有１０个属１３个种．两地水生甲虫Ｓｈａｎｎｏｎ多样性指数分别为２．１２４、１．６４３，Ｓｈａｎｎｏｎ均匀度分别为１．２６０、０．６４１，两种不同生态系统中的水生甲虫物种多度分布较好地拟合于对数级数模型，均以少数物种为优势种，其中长白山自然保护区水生甲虫以Ｈｙｄｒｏｇｌｙｐｈｕｓｊａｐｏｎｉｃｕｓ、Ｈａｌｉｐｌｕｓｓｉｍｐｌｅｘ为优势种，辽宁医巫闾山水生甲虫则以Ｈｙｄｒｏｇｌｙｐｈｕｓｐｕｓｉｌｕｓ、Ａｇａｂｕｓｕｓｕｒｉｅｎｓｉｓ、Ａｇａｂｕｓｂｒａｎｄｔｉ占优势．

Diversity of aquatic beetles in mountainous regions of northeastern China.

Investigations on aquatic beetles in static water bodies of Changbai Mountains Nature Reserve and Yiwulushan Mountains show that the species diversity of aquatic beetles is richer in broadleaved Korean pine forest ecosystem of Changbai Mountains than in agroforestry ecosystem of Yiwulushan Mountains. There are 17 genera and 29 species of aquatic beetles in Changbai Mountains, but only 10 genera and 13 species in Yiwulushan Mounatins. The Shannon diversity index is respectively 2.214 and 1.643 in Changbai Mountains and Yiwulushan Mountains, and the Shannon evenness is 1.260 and 0.640, respectively. The species abundance distribution of aquatic beetles in these two different ecosystems is fitted to logarithmic series distribution. A small number of species become the dominant in the two ecosystems. In Changbai Mountains, the dominant species are Hydroglyphus pusillus, Haliplus simplex , and H.pusillus , andin Yiwulushan Mountains, they are Agabus ussuriensis and A.brandti .