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Seed dispersal by wintering ducks in a coastal wetland of eastern China

Avian Research 2024年第4期15卷 451-457页

作者： Xin Luo Ning Li Wei Tai Yao Cai Zheng Wang Co-Innovation Center for Sustainable Forestry in Southern China College of Life SciencesNanjing Forestry UniversityNanjing 210037China Institute of Applied Ecology Nanjing Xiaozhuang UniversityNanjing 211171China

duck species are important vectors for seed dispersal of many plants,contributing significantly to the regeneration of wetland plant ***,research on the temporal changes in diet and the dynamics and differences of seed dispersal among different duck species is still *** this study,we analyzed the diversity of duck community and the diversity of seeds in the feces of different duck species from December to February for 2022–23 and 2023–24 in the coastal wetland of Dafeng,eastern Jiangsu Province,China.A total of 13 duck species were recorded in the four habitats,of which Spot-billed ducks(Anas zonorhyncha)and Mallards(***)were the most *** diversity and abundance of ducks vary across different habitats,and tidal flat supports the greatest diversity and abundance of *** collected fecal samples from Spot-billed ducks,Gadwalls(Mareca strepera),Mallards,and Eurasian Teals(***)in the tidal flat,from which seeds belonging to 7 families,13 genera and 15 different plant species were *** were significant differences in seed dispersal among the four duck species,which varied with the *** and Common Teals showed more significant diversity in seed dispersal,with their feces containing a greater variety of plant seeds,which is related to their broader dietary range and ecological ***,the seasonal variation in the number of seeds per feces reflected the availability of seeds in the habitat and the response of ducks to environmental changes,while variations in seed intake among different duck species may be associated with inter-annual weather condition *** results of this study will provide a new perspective for understanding the mechanisms of bird-mediated seed dispersal in coastal wetland and offer preliminary insights for the seed dispersal by Asian ducks.

关键词： Coastal wetland ducks duck diversity duck feces Seed dispersal

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