HOME >> BIOLOGY >> NEWS
Invasive exotic plants helped by natural enemies

Although conventional wisdom suggests that invasive exotic plants thrive because they escape the natural enemies that kept them in check in their native ranges, a new study in the journal Science suggests the opposite. Exotic plants that are in the presence of their natural enemies actually do better in their introduced ranges. The research from the Georgia Institute of Technology appears in the March 10, 2006 issue of the journal Science, published by the AAAS, the science society, the world's largest general scientific organization.

Each year, invasive exotic species cause an estimated $120 billion in damage in the United States, not to mention the untold amount of harm they do to the structure and function of native ecosystems. In this latest study, researchers found that exotic herbivores, including cattle, rabbits and goats introduced by Old World explorers, can encourage the spread of invasive exotic plants increasing their relative abundance by nearly 70 percent over native plants.

"Exotic herbivores may facilitate the growth of exotic plants by selectively consuming native plants, potentially freeing resources for exotic plants that can resist these herbivores," said John Parker, graduate researcher in the School of Biology at the Georgia Institute of Technology.

Parker, along with Professor Mark Hay and fellow graduate student Deron Burkepile, analyzed 63 published studies of more than 100 exotic and 400 native plant species. In addition to finding that exotic plant eaters increased the percentage of exotic plants in a community, they found that exotic plant eaters also increased the richness and variety of exotic plants.

They also found that native herbivores, once thought to have little effect on exotic plants, are far more effective in reducing their number. They decreased the relative abundance of exotics by 28 percent and the absolute abundance by 15 percent.

"These findings were interesting to us because, on
'"/>

Contact: David Terraso
d.terraso@gatech.edu
404-385-2966
Georgia Institute of Technology
9-Mar-2006


Page: 1 2

Related biology news :

1. National Academies advisory: Invasive aquatic species in the Great Lakes
2. Invasive grass may impede forest regeneration
3. Invasive ants territorial when neighbors are not kin
4. Invasive sea squirts persist on Georges Bank
5. Invasive species alter habitat to their benefit
6. Invasive plants prefer disturbance in exotic regions over home regions
7. Invasive species harms native hardwoods by killing soil fungus
8. Invasive honeysuckle opens door for new hybrid insect species
9. Invasive parasite destroying fish species
10. Invasive plants: Arming to defend and win
11. Invasive sea squirt alive and well on Georges Bank

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Invasive exotic plants helped natural enemies

(Date:7/9/2015)... , July 07, 2015 ... the addition of the "Biometrics for Banking; ... 2015-2020" report to their offering. ... contributor to this growth and the forecast is ... in revenue for companies involved in delivering biometric ...
(Date:7/9/2015)... 9, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced a new Match-in-Sensor™ ... hardware encapsulated fingerprint sensor and matching solution. ... literally off the grid, isolating fingerprint image ... the fingerprint sensor to provide ultimate protection ...
(Date:7/8/2015)... LAKES , N.J. and NEW YORK ... Company) and Guidepoint today announced BD ... start-up healthcare companies with free access to Guidepoint,s expert ... several start-ups that are developing cutting-edge technologies to improve ... a dedicated Guidepoint research manager, each start-up entrepreneur will ...
Breaking Biology News(10 mins):Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 3BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3
(Date:7/29/2015)... July 30, 2015 Sanofi, ... for the second quarter of 2015. CEO ... and its performance in different businesses. ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics covered in ... - Performance drivers - ...
(Date:7/29/2015)... , July 30, 2015 According ... Market - Growth, Trends & Forecasts (2015-2020), , published by ... US$ 30.25 billion by the end of 2020, with ... accounting for more than 40% of the global market size. ... at a CAGR of 13.7% during the period of (2015-2020). ...
(Date:7/29/2015)... (Q2 2015: +14% CER / 20% of sales) led the regional performance ... , as well as solid contributions from Korea, India ... Middle East / Africa (Q2 ... , Turkey and the United Kingdom ... 11%, excluding U.S. HPV sales, on demand across all customer classes. The top ...
(Date:7/29/2015)... July 29, 2015  HealthSouth Corporation ... largest providers of post-acute healthcare services, offering both ... results of operations for the second quarter ended ... was characterized by strong volume growth in both ... EBITDA," said Jay Grinney, President and Chief Executive ...
Breaking Biology Technology:Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10HealthSouth Reports Results for Second Quarter 2015 2HealthSouth Reports Results for Second Quarter 2015 3HealthSouth Reports Results for Second Quarter 2015 4HealthSouth Reports Results for Second Quarter 2015 5HealthSouth Reports Results for Second Quarter 2015 6HealthSouth Reports Results for Second Quarter 2015 7HealthSouth Reports Results for Second Quarter 2015 8HealthSouth Reports Results for Second Quarter 2015 9HealthSouth Reports Results for Second Quarter 2015 10HealthSouth Reports Results for Second Quarter 2015 11HealthSouth Reports Results for Second Quarter 2015 12HealthSouth Reports Results for Second Quarter 2015 13HealthSouth Reports Results for Second Quarter 2015 14HealthSouth Reports Results for Second Quarter 2015 15HealthSouth Reports Results for Second Quarter 2015 16HealthSouth Reports Results for Second Quarter 2015 17HealthSouth Reports Results for Second Quarter 2015 18HealthSouth Reports Results for Second Quarter 2015 19HealthSouth Reports Results for Second Quarter 2015 20HealthSouth Reports Results for Second Quarter 2015 21HealthSouth Reports Results for Second Quarter 2015 22HealthSouth Reports Results for Second Quarter 2015 23HealthSouth Reports Results for Second Quarter 2015 24HealthSouth Reports Results for Second Quarter 2015 25
Cached News: