科研之友
微信
新浪微博
Facebook
分享链接
摘要
The migration routes, stopover sites, wintering areas, and site fidelity of five Pallas's Gulls captured in July 2006 at Qinghai Lake, Qinghai, western China, are documented. Each gull was captured after the breeding season using leg nooses and fitted with a 12 g solar-powered Platform Transmitter Terminal. One bird died within a month of capture near the release site, two birds completed the return journey between the breeding and wintering grounds on three occasions, and two birds completed the return migration twice. After departing from Qinghai Lake, migration to the wintering areas took an average of 99 days and covered a mean distance of 2,990 km. Return migration to Qinghai Lake in spring averaged 38 days and covered a mean distance of 2,556 km. In 2006-2009, the gulls left the breeding grounds between 2 and 14 August, stopping at 1 4 sites en route to the wintering areas, which they reached between 3 November and 3 December. In 2007-2009, returning birds departed from the wintering areas and stopped at 1 2 sites before reaching Qinghai Lake. Wetlands at Donggeicuona, Zhaling and Eling Lakes, Keluke Lake, Qinggeda Lakes, Xinjiang, and wetlands along the Yellow River, Ningxia, were most extensively used. The number of Pallas's Gull breeding at Qinghai Lake has already fallen dramatically from over 87,000 in the 1970s to about 15,000 in present times. Rapid economic development on the Qinghai-Tibet plateau (Qinghai province and the Tibet autonomous region), particularly for tourism, poses serious threats to the fragile ecosystems associated with the wetlands where gulls stop over, with some wetlands became unsuitable for the gulls during the period of this study. Conservation measures must be put in place urgently to protect the fragile wetland ecosystems on the Qinghai-Tibet plateau.
- 出版日期2014
- 单位中国林业科学研究院
