[APWG] Wavyleaf Basketgrass

[Marc Imlay]

Integrating spread dynamics and economics of timber
<http://invasivespecies.org.au/traction?type=single&proj=WeedsNews&rec=3106>
production to manage Chinese tallow invasions in Southern U.S. Forestlands 

WeedsNews3106
<http://invasivespecies.org.au/traction/permalink/WeedsNews3106>  |
<http://invasivespecies.org.au/traction?type=single&proj=WeedsNews&rec=3106&
sdate=20120327> March 27, 2012 | 2:10 PM 
Posted by David  <http://invasivespecies.org.au/traction/profile/1> Low

Abstract: Economic costs associated with the invasion of nonnative species
are of global concern. We estimated expected costs of Chinese tallow
(Triadica sebifera (L.) Small) invasions related to timber production in
southern U.S. forestlands under different management strategies. Expected
costs were confined to the value of timber production losses plus costs for
search and control. We simulated management strategies including (1) no
control (NC), and control beginning as soon as the percentage of invaded
forest land exceeded (2) 60 (Low Control), (3) 25 (Medium Control), or (4) 0
(High Control) using a spatially-explicit, stochastic, bioeconomic model.
With NC, simulated invasions spread northward and westward into Arkansas and
along the Gulf of Mexico to occupy ?1.2 million hectares within 20 years,
with associated expected total costs increasing exponentially to ?$300
million. With LC, MC, and HC, invaded areas reached ?275, 34, and 2 thousand
hectares after 20 years, respectively, with associated expected costs
reaching ?$400, $230, and $200 million. Complete eradication would not be
cost-effective; the minimum expected total cost was achieved when control
began as soon as the percentage of invaded land exceeded 5%. These results
suggest the importance of early detection and control of Chinese tallow, and
emphasize the importance of integrating spread dynamics and economics to
manage invasive species. {Wang H-H, Grant WE, Gan J, Rogers WE, Swannack TM,
et al. (2012). Integrating spread dynamics and economics of timber
production to manage Chinese tallow invasions in Southern U.S. Forestlands.
PLoS ONE, 7(3): e33877. doi:10.1371/journal.pone.0033877]

  
Marc Imlay, PhD, 

Conservation biologist, Park Ranger Office

 <tel:%28301%29%20442-5657> (301) 442-5657 cell

  <mailto:ialm at erols.com> ialm at erols.com

Natural and Historical Resources Division

The Maryland-National Capital Park and Planning Commission

 <http://www.pgparks.com/> www.pgparks.com


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