منابع مشابه
Nahuatlea: a new genus of compositae (Gochnatieae) from North America
In the course of a detailed molecular study of the tribe Gochnatieae (Compositae: Gochnatioideae) it became apparent that the genus Gochnatia (sensu Cabrera) was not monophyletic but composed of a number of morphologically, geographically, and molecularly distinct clades. All but one of these clades had previously been recognized at the generic or sectional level and therefore had a name that c...
متن کاملDistributions of exotic plants in eastern Asia and North America.
Although some plant traits have been linked to invasion success, the possible effects of regional factors, such as diversity, habitat suitability, and human activity are not well understood. Each of these mechanisms predicts a different pattern of distribution at the regional scale. Thus, where climate and soils are similar, predictions based on regional hypotheses for invasion success can be t...
متن کاملBovicola tibialis (Phthiraptera:Trichodectidae): occurrence of an exotic chewing louse on cervids in North America.
Through a recent (2003-2007) survey of ectoparasites on hoofed mammals in western North America, a literature review, and examination of archived museum specimens, we found that the exotic deer-chewing louse, Bovicola tibialis (Piaget), is a long-term, widespread resident in the region. The earliest known collection was from Salt Spring Island, Canada, in 1941. We found these lice on the typica...
متن کاملSoil Biota Facilitate Exotic Acer Invasions in Europe and North America
The primary hypothesis for successful exotic plant invasions is that the invaders have escaped the specialist consumers that control them (Enemy Release Hypothesis). However, few studies have rigorously tested this assertion with biogeographical experiments or considered the effects of soil organisms. We tested the Enemy Release Hypothesis and the enhanced role of mutualisms by comparing densit...
متن کاملL ETTER Distributions of exotic plants in eastern Asia and North America
Qinfeng Guo,* Hong Qian, Robert E. Ricklefs and Weimin Xi U.S. Geological Survey, Northern Prairie WRC, 8711 37th St. SE, Jamestown, ND 58401, USA Research and Collections Center, Illinois State Museum, 1011 East Ash Street, Springfield, IL 62703, USA Department of Biology, University of Missouri-St Louis, 8001 Natural Bridge Road, St Louis, MO 63121-4499, USA Department of Biology, University ...
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ژورنال
عنوان ژورنال: Annals of the Missouri Botanical Garden
سال: 1917
ISSN: 0026-6493
DOI: 10.2307/2989948