云南泸沽湖省级自然保护区越冬水鸟群落组成及相关性分析

2016年9月—2019年3月,采用样点法在水鸟的南迁期(8—10月)、越冬期(11月—次年1月)、北迁期(2—3月)对云南省泸沽湖省级自然保护区迁徙水鸟进行监测。共记录水鸟7目10科38种,其中有国家二级重点保护野生鸟类3种、云南省省级重点保护野生鸟类1种。研究期内,保护区内越冬水鸟优势种累计记录10种,分别为赤麻鸭(Tadorna ferruginea)、绿头鸭(Anas platyrhynchos)、赤颈鸭(Mareca penelope)、罗纹鸭(M.falcata)、赤膀鸭(M.strepera)、赤嘴潜鸭(Netta rufina)、凤头潜鸭(Aythya fuligula)、红头潜鸭(A.ferina)、白骨顶(Fulica atra)和红嘴鸥(Chroicocephalus ridibundus)。2016—2019年月变化中,水鸟数量峰值都出现在越冬期,最大数量为14 296只;水鸟物种数峰值亦都出现于越冬期,共记录物种数38种。对8种雁形目(Anseriformes)优势种数量随时间变化的种间相关性检验的结果显示,8种雁形目中有14对为显著正相关,其中10对为极显著...

Composition and Correlation Analysis of Overwintering Waterfowl Community in Lugu Lake Provincial Nature Reserve,Yunnan Province

From September 2016 to March 2019,point based sampling approach was used to monitor the migratory waterfowl in the Lugu Lake Provincial Nature Reserve of Yunnan Province during the southward migration period(August to October),the overwintering period(November to January of the next year)and the northward migration period(February to March).A total of 38 species,10 families and seven orders of waterfowl were recorded,including three bird species that are under national secondary key protection and one bird species that are under provincial key protection in Yunnan Province.During the study period,there were 10 dominant species of overwintering waterfowl in the reserve,including Tadorna ferruginea,Anas platyrhynchos,Mareca Penelope,M.falcata,M.strepera,Netta rufina,Aythya fuligula,A.ferina,Fulica atra and Chrococephalus ridibundus.Based upon monthly observations from 2016 to 2019,the population of waterfowl peaked in the overwintering period,with the maximum number of 14,296;the total number of waterfowl species also peaked in the overwintering period,with a total of 38 species recorded.Of the eight species of Anseriformes,the results of interspecific correlation analysis of the number of dominant species varying with time showed that 14 pairs of eight species of geese were significantly and positively correlated,of which 10 pairs were extremely significant positive correlation.Interspecific attraction might be an important reason for affecting the composition of overwintering waterfowl community in the migration season of this region,and the special geographical location and composition of waterfowl community in this region may be the causes for the peak number of local waterfowl before and after migration.Based on the migration dynamics and correlation analysis of waterfowl in the reserve,bird species of F.atra,Mareca strepera and Ichthyaetus ichthyaetus can be used as the monitoring species of Lugu Lake Provincial Nature Reserve.Among them,Fulica atra can be used as the indicator species for migratory birds to reach Lugu Lake and Ichthyaetus ichthyaetus can be used as the indicator species for migratory birds to move out of Lugu Lake.