haku: @indexterm BIOLOGY / yhteensä: 18
viite: 7 / 18
| Tekijä: | Eiswerth, M. E. Johnson, W. S. |
| Otsikko: | Managing Nonindigenous Invasive Species: Insights from Dynamic Analysis |
| Lehti: | Environmental and Resource Economics
2002 : NOV, VOL. 23:3, p. 319-342 |
| Asiasana: | MODELS BIOLOGY CONTROL MANAGEMENT |
| Kieli: | eng |
| Tiivistelmä: | Accidental introductions of nonindigenous invasive species impair ecosystems, increase the risk of native species extinctions, and cause substantial economic damages on a worldwide basis. Despite the magnitude of the problem, very little economic analysis has been focused on this topic to date. This manuscript develops an optimal control model of the management of a nonindigenous species stock following its introduction and establishment. The authors find that the influence of changes in ecological and human factors (such as the invader's intrinsic growth rate, carrying capacity, and the effectiveness of invasive species management technologies) on the optimal level of management are analytically (mathematically) ambiguous in sign and depend on the values of other parameters and variables. |
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