منابع مشابه
North American Birds and West Nile Virus
Whether tempter sent, or whether tempest tossed thee here ashore, Desolate, yet all undaunted, on this desert land enchanted— On this home by horror haunted—tell me—tell me I implore! " Is there—is there balm in Gilead?—tell me—tell me I implore! " Edgar Allan Poe " The Raven " " N ot far from the house sat a great wooden raven mounted on a rather low pole; his wings were flattened to his sides...
متن کاملThe Helminth Parasites of Birds , Iii : Dicrocoeliid Trematodes from North American Birds
During the past several years we have examined, for helminth parasites, more than 700 specimens of wild birds, which represent 14 orders, 40 families, and 134 species. Although the avian hosts came from various localities throughout the southeastern section of the United States, the greater concentrations were collected from State College, Miss. ; Athens and Augusta, Ga. ; Highlands, N. C. ; Re...
متن کاملEcological correlates of geographical range occupancy in North American birds
Aim The degree to which a species is predictably encountered within its range varies tremendously across species. Understanding why some species occur less frequently within their range than others has important consequences for conservation and for analyses of ecological patterns based on range maps. We examined whether patterns in geographical range occupancy can be explained by species-level...
متن کاملComprehensive DNA barcode coverage of North American birds
DNA barcoding seeks to assemble a standardized reference library for DNA-based identification of eukaryotic species. The utility and limitations of this approach need to be tested on well-characterized taxonomic assemblages. Here we provide a comprehensive DNA barcode analysis for North American birds including 643 species representing 93% of the breeding and pelagic avifauna of the USA and Can...
متن کاملPoleward shifts in winter ranges of North American birds.
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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ژورنال
عنوان ژورنال: Transactions of the American Microscopical Society
سال: 1918
ISSN: 0003-0023
DOI: 10.2307/3221445