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Invasive plants prefer disturbance in exotic regions over home regions
July 27, 2006One of the most invasive exotics in the western United States, the yellow starthistle, is successful both at "invasion" in non-native areas and "colonization" in native ones. However, new research from an international team of researchers finds that a disturbance - such as fire or grazing - actually increased the success of yellow starthistle far more in non-native than in its home regions. Furthermore, yellow starthistle was able to establish virtual monocultures in disturbed plots only where it is exotic.
"Our results are novel," says Jose Hierro (University of Montana and Universidad Nacional de La Pampa). "No one else has ever shown that ruderals, that is, plants that are generally adapted to disturbance, respond differently to disturbance in native versus non-native regions."
The researchers suggest that soil pathogens suppress the growth of certain species and may contribute to the disproportionately powerful effect of disturbance in introduced regions.
"The potential for disturbance to have much stronger effects in invaded systems than in native systems is not trivial," says Ragan Callaway (University of Montana). "If disturbance in non-native regions is no different than in native regions, then clearly the management response is to limit disturbance and thus to limit invasions. However, if disturbance in invaded regions has a much stronger effect that in native regions, then the management response must look beyond disturbance to control or limit the invasion."
University of Chicago Press Journals
Invasive Plant Current Events and Invasive Plant News RSSGlobal Seed Banking Milestone Celebrated by Wildflower Center, 122 Other Organizations
An international partnership of 54 countries led by the United Kingdom's Royal Botanic Gardens, Kew is celebrating a decade of work to set aside seeds for future generations from 10 percent of the world's wild flowering species.
Northwestern United States could face more tamarisk invasion by century's end
If the future warming trends that scientists have projected are realized, one of the country's most aggressive exotic plants will have the potential to invade more U.S. land area, according to a new study published in the current issue of the journal Invasive Plant Science and Management.
Over time, an invasive plant loses its toxic edge
Like most invasive plants introduced to the U.S. from Europe and other places, garlic mustard first found it easy to dominate the natives. A new study indicates that eventually, however, its primary weapon - a fungus-killing toxin injected into the soil - becomes less potent.
Leicester research paves way for first use in Europe of an insect to fight invasive plant
Researchers at the University of Leicester have paved the way for the first ever use in Europe of an insect (biocontrol) to combat an invasive plant species in Britain.
Nitrogen research shows how some plants invade, take over others
Biologists know that when plants battle for space, often the actual battle is for getting the nitrogen.
Changing climate may make 'super weed' even more powerful
Researchers at the University of Delaware have discovered a new reason why the tall, tasseled reed Phragmites australis is one of the most invasive plants in the United States.
Scientist Names Top Five Invasive Plants Threatening Southern Forests in 2009
U.S. Forest Service Southern Research Station (SRS) Ecologist Jim Miller, Ph.D., one of the foremost authorities on nonnative plants in the South, today identified the invasive plant species he believes pose the biggest threats to southern forest ecosystems in 2009.
Biocontrol Insect Exacerbates Invasive Weed
Biocontrol agents, such as insects, are often released outside of their native ranges to control invasive plants. But scientists in Montana have found that through complex community interactions among deer mice, native plants and seeds, the presence of an introduced fly may exacerbate the effects of the invasive plant it was meant to control.
Window of opportunity for restoring oaks small, new study finds
Communities of Oregon white oak were once widespread in the Pacific Northwest's western lowlands, but, today, they are in decline. Fire suppression, conifer and invasive plant encroachment, and land use change have resulted in the loss of as much as 99 percent of the oak communities historically present in some areas of the region.
Woody and aquatic plants pose greatest invasive threat to China
Although China currently has fewer invasive woody plants than the United States, China's potential for invasion by nonnative trees and shrubs is high, according to an article in the May 2008 issue of BioScience.
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Native Alternatives to Invasive Plants (Brooklyn Botanic Garden All-Region Guide) by C. Colston Burrell (Author) The biggest enemy of any garden is not a pest, disease, or poison—it’s any plant with tougher survival skills than the plants it competes with. The best way to weed out the invaders is with this fiendishly clever guide to native plants that can seek and destroy the top 100 most unwelcome perennials, grasses, vines, shrubs, and trees. While replacing the invaders, the beautiful, hardy native plants described here also attract native birds and butterflies, while turning away their own enemy invaders. Word-and-picture guides provide tips on care and maintenance, while helpful “at a glance” boxes depict shapes, sizes, best locations, and most attractive features of each native alternative. |
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Demystifying Woods and Wildlife Management: Simple and Sustainable Projects for Landowners Also With: Don Schaufler (Forester) (Primary Contributor), Jerry Gordon (Landowner) (Primary Contributor) Do you own or lease property but arent exactly sure what to do with it or how to improve the value for both timber and wildlife? This DVD lets you accompany a landowner and a certified forester as they discuss and demonstrate techniques, concepts, and principles of simple projects that will help you get the most out of your woods and wildlife, such as; Understanding basic forestry concepts and terminology Attracting more wildlife to your property, including how to prune wild apple trees Planting trees for timber and wildlife Increasing the value of the timber on your property And much more, including a bonus PowerPoint slideshow (over 90 slides) and a list of over 50 web link resources! Detailed info: TOPICS COVERED INCLUDE: Wildlife Management Pruning Apple Trees Patch... |
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Purple Loosestrife, Invasive Alien Plant, Portsmouth, New Hampshire, USA Photographic Poster Print by Jerry & Marcy Monkman, 12x16 by AllPosters.com AllPosters.com is the world's #1 seller of posters, prints, photographs, specialty products and framed art. We're dedicated to bringing our customers the best selection of high quality wall décor that is perfect for their home or office. Browse our catalog of over 300,000 items that include entertainment and specialty posters, decorative prints, and art reproductions. Whether you're looking for your favorite movie or music poster, a framed Monet reproduction, or a print of the Eiffel Tower you will find it at AllPosters.com. Visit our Amazon store today at www.amazon.com/allposters to find Special Offers and search by subject category or artist. AllPosters.com provides unmatched service with a 100% satisfaction guarantee. We ship internationally to over 80 countries. Decorate your... |
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