Ebook: Grasshoppers and Grassland Health: Managing Grasshopper Outbreaks without Risking Environmental Disaster

Acridids (grasshoppers and locusts) can range from being rare curiosities to abundant menaces. Some are threatened with extinction and become subjects of intensive conservation efforts, while others are devastating pests and become the objects of massive control programmes. Even within a species, there are times when the animal is so abundant that its crushed masses cause the wheels of trains to skid (the Rocky Mountain grasshopper, Melanoplus spretus Walsh in western North America in the 1860s and I 870s), while at other times the animal is alarmingly scarce (the Rocky Mountain grasshopper went extinct in the early 1900s). Why are there these extremes in one insect family, and even in a single species? The NATO workshop examined this paradox and its implications for Environmental Security, which must address both the elements of land use (agricultural production and pest management) and conservation of biodiversity. The reconciliation of these objectives clearly demands a critical assessment of current knowledge and policies, identification of future research, and close working relationships among scientists. Insects can present two clear faces, as well as the intervening gradation. These extremes require us to respond in two ways: conservation of scarce species and suppression of abundant (harmful) species. But perhaps most important, these opposite poles also provide the opportunity for an exchange of information and insight.

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The first comprehensive, international exploration of the environmental and economic costs and benefits of acridids (grasshoppers and locusts) both as essential ecological components and as serious grassland pests. Using a risk analysis approach to examine the ecological role of acridids and the effect of controlling these insects, the authors assess our current understanding of the grasshopper-grassland relationship. They also propose new directions for research and management in acridology and ecology that are consistent with developing a more economically productive and environmentally sustainable human presence on the world's grasslands. The integration of ecological, agricultural, economic, political and cultural perspectives brings into focus the enormous complexity of managing native insect populations in natural ecosystems. This general survey is supported by individual chapters devoted to particularly relevant and contemporary studies of grasshopper and locust ecology, pest management and conservation.

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The first comprehensive, international exploration of the environmental and economic costs and benefits of acridids (grasshoppers and locusts) both as essential ecological components and as serious grassland pests. Using a risk analysis approach to examine the ecological role of acridids and the effect of controlling these insects, the authors assess our current understanding of the grasshopper-grassland relationship. They also propose new directions for research and management in acridology and ecology that are consistent with developing a more economically productive and environmentally sustainable human presence on the world's grasslands. The integration of ecological, agricultural, economic, political and cultural perspectives brings into focus the enormous complexity of managing native insect populations in natural ecosystems. This general survey is supported by individual chapters devoted to particularly relevant and contemporary studies of grasshopper and locust ecology, pest management and conservation.
Content:
Front Matter....Pages i-ix
Front Matter....Pages 1-1
A Novel Approach to Solving Complex Ecological Problems: An International Polylogue on the Art and Science of Applied Acridology....Pages 1-6
Front Matter....Pages 7-7
Do Grasshoppers Diminish Grassland Productivity? A New Perspective for Control Based on Conservation....Pages 7-29
What are the Consequences of Ecosystem Disruption on Acridid Diversity and Abundance?....Pages 31-59
What is the the Role of Grassland Vegetation in Grasshopper Population Dynamics?....Pages 61-70
Front Matter....Pages 71-71
How do Spatial Population Structures Affect Acridid Management?....Pages 71-87
Can Micropopulation Management Protect Rare Grasshoppers?....Pages 89-95
What Factors Govern Orthopteran Community Structure and Species Prevalence?....Pages 97-107
Front Matter....Pages 109-109
How can Acridid Population Ecology be Used to Refine Pest Management Strategies?....Pages 109-129
What are the Consequences of Non-Linear Ecological Interactions for Grasshopper Control Strategies?....Pages 131-144
What Tools have Potential for Grasshopper Pest Management?....Pages 145-156
Front Matter....Pages 157-157
How can Acridid Outbreaks be Managed in Dryland Agricultural Landscapes?....Pages 157-172
Can Locust Control be Compatible with Conserving Biodiversity?....Pages 173-179
How does Insecticidal Control of Grasshoppers Affect Non-Target Arthropods?....Pages 181-192
Front Matter....Pages 193-193
The Risks of Grasshoppers and Pest Management to Grassland Agroecosystems: An International Perspective on Human Well-Being and Environmental Health....Pages 193-215
Back Matter....Pages 217-221

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The first comprehensive, international exploration of the environmental and economic costs and benefits of acridids (grasshoppers and locusts) both as essential ecological components and as serious grassland pests. Using a risk analysis approach to examine the ecological role of acridids and the effect of controlling these insects, the authors assess our current understanding of the grasshopper-grassland relationship. They also propose new directions for research and management in acridology and ecology that are consistent with developing a more economically productive and environmentally sustainable human presence on the world's grasslands. The integration of ecological, agricultural, economic, political and cultural perspectives brings into focus the enormous complexity of managing native insect populations in natural ecosystems. This general survey is supported by individual chapters devoted to particularly relevant and contemporary studies of grasshopper and locust ecology, pest management and conservation.
Content:
Front Matter....Pages i-ix
Front Matter....Pages 1-1
A Novel Approach to Solving Complex Ecological Problems: An International Polylogue on the Art and Science of Applied Acridology....Pages 1-6
Front Matter....Pages 7-7
Do Grasshoppers Diminish Grassland Productivity? A New Perspective for Control Based on Conservation....Pages 7-29
What are the Consequences of Ecosystem Disruption on Acridid Diversity and Abundance?....Pages 31-59
What is the the Role of Grassland Vegetation in Grasshopper Population Dynamics?....Pages 61-70
Front Matter....Pages 71-71
How do Spatial Population Structures Affect Acridid Management?....Pages 71-87
Can Micropopulation Management Protect Rare Grasshoppers?....Pages 89-95
What Factors Govern Orthopteran Community Structure and Species Prevalence?....Pages 97-107
Front Matter....Pages 109-109
How can Acridid Population Ecology be Used to Refine Pest Management Strategies?....Pages 109-129
What are the Consequences of Non-Linear Ecological Interactions for Grasshopper Control Strategies?....Pages 131-144
What Tools have Potential for Grasshopper Pest Management?....Pages 145-156
Front Matter....Pages 157-157
How can Acridid Outbreaks be Managed in Dryland Agricultural Landscapes?....Pages 157-172
Can Locust Control be Compatible with Conserving Biodiversity?....Pages 173-179
How does Insecticidal Control of Grasshoppers Affect Non-Target Arthropods?....Pages 181-192
Front Matter....Pages 193-193
The Risks of Grasshoppers and Pest Management to Grassland Agroecosystems: An International Perspective on Human Well-Being and Environmental Health....Pages 193-215
Back Matter....Pages 217-221
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