Russell Lande, Steinar Engen, and Bernt-Erik SÆther
- Published in print:
- 2003
- Published Online:
- April 2010
- ISBN:
- 9780198525257
- eISBN:
- 9780191584930
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198525257.003.0006
- Subject:
- Biology, Ecology
This chapter reviews recent analytical models of sustainable harvesting of fluctuating populations without age structure that incorporate the risk of population collapse or extinction. Using ...
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This chapter reviews recent analytical models of sustainable harvesting of fluctuating populations without age structure that incorporate the risk of population collapse or extinction. Using diffusion theory it compares three classical harvesting strategies and one new strategy in terms of their harvest statistics and the mean time to population collapse or extinction. It uses simple analytical models to derive general principles and then apply these principles to more realistic, age-structured models of particular species to derive by simulation the optimal harvesting strategies.Less
This chapter reviews recent analytical models of sustainable harvesting of fluctuating populations without age structure that incorporate the risk of population collapse or extinction. Using diffusion theory it compares three classical harvesting strategies and one new strategy in terms of their harvest statistics and the mean time to population collapse or extinction. It uses simple analytical models to derive general principles and then apply these principles to more realistic, age-structured models of particular species to derive by simulation the optimal harvesting strategies.
Stephen F. Siebert
- Published in print:
- 2012
- Published Online:
- November 2016
- ISBN:
- 9780824835361
- eISBN:
- 9780824871826
- Item type:
- chapter
- Publisher:
- University of Hawai'i Press
- DOI:
- 10.21313/hawaii/9780824835361.003.0009
- Subject:
- Anthropology, Asian Cultural Anthropology
This chapter discusses the issue of sustainable rattan harvesting from a local perspective. Defining and implementing sustainable use of tropical forests and its products have been the subject of ...
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This chapter discusses the issue of sustainable rattan harvesting from a local perspective. Defining and implementing sustainable use of tropical forests and its products have been the subject of considerable debate for decades. Academics and conservationists have argued over the meaning, potential paths, obstacles to, and the viability of sustainable resource use. Drawing on conversations with a number of rattan gatherers, this chapter asks whether rattan harvesting can be sustained and what ecological effects are associated with cane harvesting. It also examines what institutional arrangements and governing capabilities are required at national and local levels to manage harvesting; the role of market demand, financial returns, government policies, and resource tenure in sustainable harvesting of rattan and other nontimber forest products (NTFPs); and how community forestry, and community-based natural resource management (CBNRM) more generally, can help promote the sustainable management of natural resources.Less
This chapter discusses the issue of sustainable rattan harvesting from a local perspective. Defining and implementing sustainable use of tropical forests and its products have been the subject of considerable debate for decades. Academics and conservationists have argued over the meaning, potential paths, obstacles to, and the viability of sustainable resource use. Drawing on conversations with a number of rattan gatherers, this chapter asks whether rattan harvesting can be sustained and what ecological effects are associated with cane harvesting. It also examines what institutional arrangements and governing capabilities are required at national and local levels to manage harvesting; the role of market demand, financial returns, government policies, and resource tenure in sustainable harvesting of rattan and other nontimber forest products (NTFPs); and how community forestry, and community-based natural resource management (CBNRM) more generally, can help promote the sustainable management of natural resources.
Ray Hilborn and Ulrike Hilborn
- Published in print:
- 2019
- Published Online:
- July 2019
- ISBN:
- 9780198839767
- eISBN:
- 9780191875533
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198839767.003.0017
- Subject:
- Biology, Aquatic Biology, Biodiversity / Conservation Biology
The Future of Fisheries. The much-ballyhooed imminent collapse of the world’s fish stocks is simply not borne out by the available data. In much of the world, fish stocks are increasing. We foresee ...
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The Future of Fisheries. The much-ballyhooed imminent collapse of the world’s fish stocks is simply not borne out by the available data. In much of the world, fish stocks are increasing. We foresee continued fish production wherever there is effective fisheries management, but an uncertain future where there is none, and it is there that establishing effective fisheries management is the most pressing issue. Individual countries and their management agencies will increasingly be challenged to decide between economic efficiency and maintaining traditional fishing communities and practices. As long as the management systems stay in place and the marine ecosystems remain productive, the fish they produce can be sustainably harvested and contribute to food security.Less
The Future of Fisheries. The much-ballyhooed imminent collapse of the world’s fish stocks is simply not borne out by the available data. In much of the world, fish stocks are increasing. We foresee continued fish production wherever there is effective fisheries management, but an uncertain future where there is none, and it is there that establishing effective fisheries management is the most pressing issue. Individual countries and their management agencies will increasingly be challenged to decide between economic efficiency and maintaining traditional fishing communities and practices. As long as the management systems stay in place and the marine ecosystems remain productive, the fish they produce can be sustainably harvested and contribute to food security.
