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| Hirsch, Steven A.; Leitch, Jay A.. |
| The economic impact of three invasive, exotic weeds--diffuse, spotted, and Russian knapweed (Centaurea diffusa, C. maculosa, and Acroptilon repens)--on Montana's economy was estimated using a procedure developed for another invasive weed species. Published data and that from a survey of county weed boards were used to estimate direct negative impacts of over $14 million annually due to infestation of over 2 million acres of rangeland and wildland. This amounts to about $10.63 on each infested grazing land acre and $3.95 on each infested wildland acre. Direct plus secondary economic impacts, estimated using an input-output model, are about $42 million annually, which could support over 500 jobs in the state's economy. This first approximation suggests... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Knapweed (Centaurea diffusa; C. maculosa; And Acroptilon repens); Montana; Economic impact; Invasive weeds; Rangeland; Wildland; Resource /Energy Economics and Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/23289 |
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| Eagle, Alison J.; Eiswerth, Mark E.; Johnson, Wayne S.; Schoenig, Steve E.; van Kooten, G. Cornelis. |
| While the significant ecosystem damage caused by invasive weeds has been well documented, the economic impacts of specific invasive weed species are poorly understood. Yellow starthistle (Centaurea solstitialis L., hereafter YST) is the most widespread non-crop weed in California, resulting in serious damage to forage on natural range and improved pasture. A survey was administered to California cattle ranchers to investigate YST infestation rates, loss of forage quantity and value, and control or eradication efforts. The results were used to estimate county-wide economic losses for three focus counties, as well as state-wide economic losses, due to YST in California. Total losses of livestock forage value due to YST on private land for the state of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Nonnative species; Invasive weeds; Yellow starthistle; Ranching profitability; Forage; Livestock; Crop Production/Industries; Environmental Economics and Policy; Livestock Production/Industries; Q24; Q57. |
| Ano: 2006 |
URL: http://purl.umn.edu/37028 |
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