崇明东滩黑脸琵鹭迁徙种群的初步研究

Preliminary Research of the Migrant Populatiopn of the Black-Faced Spoonbill Platatlea minor in Dongtan Wetland of Chongming Island,Shanghai

从2002年4月至2003年12月,对迁徙途中在崇明东滩停留的黑脸琵鹭进行了观察,记录到718只次在东滩活动.结果发现,黑脸琵鹭主要在春季北迁时在东滩停留,占全年的93.2%,时间长达1个月以上,并选择鱼蟹塘作为主要的栖息和觅食地,占94.8%.冬季黑脸琵鹭在东滩偶见,说明该区域不是其重要越冬地.2002年春季黑脸琵鹭以相对较大的集群在东滩活动,而2003年春季则是小种群分批到达并离开.其中经过并停留的黑脸琵鹭达130只左右,说明崇明东滩是该物种在迁徙过程中重要的栖息地.

From April 2002 to December 2003, the black-faced spoonbills were investigated in Dongtan Wetland in Chongming Island of Shanghai, China. Results showed that the species were recorded in Dongtan mostly during the northward migrant. They prefer crab ponds as their feeding and resting sites. The black-faced spoonbill is very rarely in winter. In the spring of 2002, the species stayed in Dongtan at a flock of 45-16 individuals; but in the spring of 2003, each flock was less than 30 individuals and the total amount recorded there is about 130. This showed the Dongtan Wetland has become one of the important overstop areas of black-faced spoonbills during their migration.