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| Schindler, David; University of Alberta; d.schindler@ualberta.ca. |
| Few boreal waters are managed in a sustainable manner, because cumulative effects of a variety of human activities are not considered. Fisheries and water quality have declined in most large water bodies of the southern boreal zone. Some of the reasons are direct, including overexploitation of fisheries, alteration of flow patterns, introductions of non-native species, and discharge of eutrophying nutrients and persistent contaminants. However, improper management of watersheds and airsheds also causes degradation of aquatic ecosystems. Clear-cut logging, climatic warming, acid precipitation, and stratospheric ozone depletion are among the more important of these indirect stressors. There are important interactions among these stressors, requiring that... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Atmospheric stressors; Aquatic ecosystems; Biodiversity of streams and lakes; Boreal ecosystems; Clear-cutting; Cumulative effects; Ecological invasions; Fisheries; Indigenous peoples; Land-water interactions; Sustainable development; Watershed management.. |
| Ano: 1998 |
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| Brown, J. Bradley. |
| Many forest amenities are derived not only from the age of the trees, but also from the density of the trees. When an externality such as erosion control is considered, clear-cutting results in much larger damages than occur with selective cutting. This paper extends current methodology, allowing firms to optimize over both rotation time and the commercial use percentage per acre. A two-part instrument, a "clear-cut" tax combined with a lump sum "licensing fee", controls for commercial use percentage and rotation time in a firm that does not internalize non-timber benefits. Optimal taxes are presented that correct the firm's suboptimal behavior. A two-part instrument is shown to remedy market failure when a private firm clear-cuts and harvests... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Two-Part Tax; Forestry; Clear-cutting; Optimal Rotation; Externalities; Optimal Harvest; Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19560 |
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