Journal of Ecology and Rural Environment ›› 2021, Vol. 37 ›› Issue (9): 1176-1182.doi: 10.19741/j.issn.1673-4831.2020.0862

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Diversity of Wintering Waterbirds in Tiaozini Wetland of Dongtai and Rudong Wetland, Jiangsu Province

GAO Shuai1, LIU Wei2, ZHANG Shuai1, YI Jian-feng2, WANG Zheng1   

  1. 1. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China;
    2. Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
  • Received:2020-10-30 Online:2021-09-25 Published:2021-09-18

Abstract: The Tiaozini wetland in Dongtai and Rudong wetland are important nodes on the East Asian-Australasian Flyway which serve as important stopovers and wintering sites for waterbirds. In the winters of 2017-2020, the diversity and habitat utilization of wintering waterbirds in the Tiaozini and Rudong wetlands were surveyed by a sampling method. A total of 52 species of waterbirds were found in the two wetlands, belonging to 8 orders and 13 families. Specifically, 42 waterbird species from 8 orders and 12 families were recorded in the Tiaozini wetland, and the wintering population of five species in a single survey exceeded 1% of their global populations. In addition, 43 waterbird species from 6 orders and 11 families were recorded in the Rudong wetland. The wintering population of three species in a single survey exceeded 1% of their global populations. There were no significant differences in the species number of waterbirds, number of individual waterbirds, or diversity index between the two wetlands in different years. The waterbird density of the Tiaozini wetland was significantly higher than that of the Rudong wetland. Ponds and tidal flats were the main habitats for wintering waterbirds. The species composition, community similarity index, and diversity index of the waterbirds in the two habitats of the Dongtai and Rudong wetlands were different. Some reasonable suggestions for the protection and management of waterbirds and their habitats are put forward. Enhancing active waterbird monitoring should play an important ecological role in the protection of East Asian-Australasian Flyways.

Key words: Tiaozini wetland in Dongtai, Rudong wetland, wintering waterbird, diversity, habitat utilization

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