LONG-TERM TRENDS IN THE ARRIVAL DATES OF SPRING MIGRANTS
LONG-TERM TRENDS IN THE ARRIVAL DATES OF SPRING MIGRANTS
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DOI：
10.1080/00063659509477167
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发表时间：
1995-11-01
期刊：
影响因子：
0.7
通讯作者：
MASON, CF
中科院分区：
文献类型：
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作者：
MASON, CF
本文介绍了莱斯特郡50年来23种候鸟春季到达日期的数据。在此期间，苍头鸟、沙马丁、黑头莺和芦苇莺有明显的提前到达趋势，而树皮鸟、杜鹃、莺、白喉鸟和花园莺有明显的推迟到达趋势。15个物种在20世纪40年代明显提前到达，这是一个温暖的春天，而几个物种在20世纪80年代也出现了提前到达。在20世纪60年代和70年代，由于4月份的气温比平均气温低，许多物种的到达时间都晚了。有几个品种在到达日期和温度之间表现出显著的相关性。最早到达的物种的到达日期比晚到达的物种变化更大，而在4月下半月到达的物种则基本同步到达。这些结果在全球变暖的背景下进行了讨论。
Data on the spring arrival dates of 23 species of migrants in Leicestershire over a 50-year period are presented. Chiffchaff, Sand Martin, Blackcap and Sedge Warbler showed a significant trend towards earlier arrival over the period, while Tree Pipit, Cuckoo, Whinchat, Whitethroat and Garden Warbler showed It significant trend towards later arrival. Fifteen species arrived noticeably earlier in the 1940s, a period of warm springs, while several species showed earlier arrivals in the 1980s. A number of species showed later arrival dates in the 1960s and 1970s, when April temperatures were colder than average. Several species showed significant correlations between arrival date and temperature. Arrival dates of the earliest species were much more variable than those arriving later, while species arriving in the second half of April showed a generally synchronous arrival. The results are discussed in the context of global warming.