منابع مشابه
Recent range expansion and divergence among North American Prairie Grouse.
Prairie grouse (genus: Tympanuchus) once existed throughout much of North America but have recently experienced significant population declines, isolation, and extinction. In previous molecular studies, contrasting patterns or an unresolved polytomy among Tympanuchus taxa (Tympanuchus phasianellus, Tympanuchus pallidicinctus, and Tympanuchus cupido) have resulted from traditional phylogenetic m...
متن کاملRestoring Tallgrass Prairie and Grassland Bird Populations in Tall Fescue Pastures With Winter Grazing
Restoration of grasslands dominated by tall fescue (Schedonorus phoenix [Scop.] Holub) to native tallgrass prairie usually requires burning, herbicides, or reseeding. We tested seasonal grazing by livestock in winter, combined with cessation of fertilization, as a restoration tool for modifying the competitive dynamics among herbaceous plants to restore tallgrass prairie communities in southeas...
متن کاملFire history of a prairie/forest boundary: more than 250 years of frequent fire in a North American tallgrass prairie
Results: Fires were recorded in 46.6% of the years between 1729 and 2005. In 41 cross-sections at one site, the mean fire interval between 1759 and 2003 was 2.59 years, with fire interval decreasing from a mean fire interval of 3.76 years in the early part of the record to 2.13 years in modern times. No extended periods without fire were recorded in the study area. Drought conditions had no sig...
متن کاملNorth American prairie wetlands are important non-forested land-based carbon storage sites.
We evaluated the potential of prairie wetlands in North America as carbon sinks. Agricultural conversion has resulted in the average loss of 10.1 Mg ha(-1) of soil organic carbon on over 16 million ha of wetlands in this region. Wetland restoration has potential to sequester 378 Tg of organic carbon over a 10-year period. Wetlands can sequester over twice the organic carbon as no-till cropland ...
متن کاملAboveground predation by an American badger (Taxidea taxus) on black-tailed prairie dogs (Cynomys ludovicianus)
—During research on black-tailed prairie dogs (Cynomys ludovicianus), we repeatedly observed a female American badger (Taxidea taxus) hunting prairie dogs on a colony in southern Phillips County, Montana. During 1–14 June 2006, we observed 7 aboveground attacks (2 successful) and 3 successful excavations of prairie dogs. The locations and circumstances of aboveground attacks suggested that the ...
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ژورنال
عنوان ژورنال: Oryx
سال: 1981
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605300017154