... and moving a bit north.Breeding ranges of British birds British Birds could refer to
Faculties The various schools, institutes and centres of the University are arranged into nine faculties, each with a dean, pro-deans and central functions:
"The most parsimonious par·si·mo·ni·ous adj. Excessively sparing or frugal. par  si·mo explanation is climate," say Chris
D. Thomas and Jack J. Lennon in the May 20 NATURE.
Thomas and Lennon spotted the trend by comparing the outer edges of nesting ranges recorded in two atlases of bird breeding grounds in Great Britain Great Britain, officially United Kingdom of Great Britain and Northern Ireland, constitutional monarchy (2005 est. pop. 60,441,000), 94,226 sq mi (244,044 sq km), on the British Isles, off W Europe. The country is often referred to simply as Britain. . The first atlas covered 1968 through 1972, and the second, 1988 through 1991. Population booms and busts can affect range margins. Taking such shifts into account, the researchers report that 42 of Great Britain's southerly species further extended their northern nesting border over the 2 decades. The researchers suspect that climate drove the shifts because it affects so many features of bird life. Other work links warmer spring weather to variations in timing and success of nests and shows that temperature correlates with patterns of bird distribution in Britain. Also, the range shift occurred during a time of climate warming, Thomas and Lennon point out. Others find similar shifts among European butterflies but·ter·fly n. 1. Any of various insects of the order Lepidoptera, characteristically having slender bodies, knobbed antennae, and four broad, usually colorful wings. 2. . |
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