Birds extend their ranges northwards
نویسندگان
چکیده
منابع مشابه
Cytonemes extend their reach.
Cytonemes are specialized filopodia, first described in the Drosophila wing imaginal disc, that were proposed to mediate long distance signalling during development. A recent report from Barna and colleagues (Sanders et al, 2013) published in Nature shows that cytonemes in the chick limb bud carry SHH signalling proteins out to signal receiving cells, thus highlighting their evolutionarily cons...
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Climate change is thought to promote the poleward movement of geographic ranges; however, the spatial dynamics, mechanisms, and regional anthropogenic drivers associated with these trends have not been fully explored. We estimated changes in latitude of northern range boundaries, center of occurrence, and center of abundance for 254 species of winter avifauna in North America from 1975 to 2004....
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Those interested in the relationship between environment structure and behavior—the topic of this special issue of Adaptive Behavior —will find much of value in Peter Godfrey-Smith's new book, Complexity and the Function of Mind in Nature (hereafter CFMN; all page citations are to CFMN unless otherwise indicated). The writing is clear and concise, aptly balancing precision and breadth, and a ho...
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Africanized honey bees (Apis mellifera) arrived in the western hemisphere in the 1950s and quickly spread north reaching California in the 1990s. These bees are highly defensive and somewhat more difficult to manage for commercial purposes than the European honey bees traditionally kept. The arrival of these bees and their potentially replacing European bees over much of the state is thus of gr...
متن کاملClosely related species of birds differ more in body size when their ranges overlap--in warm, but not cool, climates.
Differences in body size are widely thought to allow closely related species to coexist in sympatry, but body size also varies as an adaptive response to climate. Here, we use a sister lineage approach to test the prediction that body size differences between closely related species of birds worldwide are greater for species whose ranges are sympatric rather than allopatric. We further test if ...
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ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/20335