现代湖泊中的造迹生物暨滨湖带生物痕迹——以青海湖为例

现代湖泊中的造迹生物以底栖的寡毛类蠕虫、甲壳动物、软体动物的双壳类和腹足类、昆虫幼虫为主。通过观察,作者发现青海湖滨湖带有5类生物痕迹,它们是鸟的足迹、足辙迹、昆虫爬迹、钩虾的拖迹和甲壳虫的潜穴.生物痕迹的分布和底栖生物的分布一样受控于盐度、底层性质和岩性,共生动植物数量等环境条件。

TRACE-MAKING ORGANISMS IN LACUSTRINE ENVIRONMENTS AND THE LEBENSSPUREN FROM LITTORAL ZONES OF LAKES——QINGHAI LAKE AS AN EAMPLE

Trace-making organisms in modern lacustrine environments are mainly benthic oligochaete annelids. Crustaceans, bivalves and gastropods, insect larvae. Five types of lebensspuren are found in the littoral zone of Qinghai Lake, they are tracks and traekways of birds and other vertebrate animals, crawling traces of insects, trails of Gammarus(amphipod), burrows of beetles. The lebensspuren diversity, abundance and distribution are controlled by the factors such as salinity of water, substrate property, food supply etc., just as that of their trace-making organisms.