期刊
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
卷 45, 期 4, 页码 212-216出版社
SPRINGER-VERLAG
DOI: 10.1007/s004840100095
关键词
migration timing; Hirundo rustica; temperature; altitude; latitude
The (barn) swallow Hirundo rustica is a traditional harbinger of spring in many countries of the Northern Hemisphere. This paper uses information on the arrival and departure dates of the swallow in the Slovak Republic for the 30 years 1961-1985 and 1996-2000. Records were taken at 19 locations throughout the Republic representing an altitude range from 105 m to 760 m. Monthly temperature data were constructed from six meteorological stations. With the use of regression techniques, trends towards later arrival, earlier departure and the effects of latitude, altitude and temperature are all apparent.
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