منابع مشابه
Towering tribute to botany
One of the world's greatest plant collections has won a top heritage award at a time when it is highlighting with a tree-top walkway the need to study the forest canopy which is one of the most crucial but least understood habitats.
متن کاملTowering Figures in American Mathematics, 1890-1950
The state of American mathematics in the year 1890 was quite bleak. Only two schools offered true graduate education, The Johns Hopkins University and Clark University. Both were new, Hopkins having been founded in 1876 and Clark in 1889. When compared to their counterparts in Europe, the courses taught at the vast majority of American universities were paltry, the spirit of research almost non...
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Biological research on birds of the grouse family has become increasingly related to conservation. We review trends in grouse biology, analysing the representation of species and topics in the titles of 2,788 papers published since 1930. Ruffed grouse Bonasa umbellus, the most frequently studied species before 1960, was overtaken by willow ptarmigan Lagopus lagopus in the 1970s, after which bla...
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Coyotes (Canis latrans) are lethally controlled throughout the range of Greater Sage-Grouse (Centrocercus urophasianus) and it has been suggested that such control may benefit sage-grouse. However, the perceived benefits of control are based on the direct effects of coyotes on sage-grouse and largely ignore potential indirect interactions. Here, we summarize some of the evidence for direct effe...
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This paper provides an overview of conservation status and major threats to grouse based on information collected by the IUCN/SSC BirdLife WPA Grouse Specialist Group during 2004-2005. At the time of compiling the first Grouse Action Plan (Storch 2000b) in 1999, no grouse species were considered to be threatened following the IUCN criteria, but three species with limited geographic distribution...
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ژورنال
عنوان ژورنال: Nature
سال: 1876
ISSN: 0028-0836,1476-4687
DOI: 10.1038/015116d0