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description Publicationkeyboard_double_arrow_right Article 2020Publisher:Elsevier BV Authors: Carmen Ponce;Carmen Ponce;Abstract Agricultural systems are highly sensitive to climate change. Most studies focus on the effect of heat and water availability on crop yields, but little is known about the impact of changes in intra-seasonal climate variability (particularly challenging in mountain regions). Also, beyond the effect on crop yields –mostly focused on single cropping systems and major world crops- little analysis has been done on more complex, diversified and low-input cropping systems like those prevalent in the Andean region. This study investigates whether Andean farmers respond to increasing climate variability by increasing crop diversity (measured by intercropping and crop diversification indices) and by switching to crops which better tolerate heterogeneous environmental conditions. Since previous studies show that crop diversification fosters resilience of agricultural systems, decreasing crop portfolio diversity in an increasingly variable environment may challenge farms sustainability. The data used in the analysis combines district-level socio-economic information from two agrarian censuses (1994 and 2012) with district-level climate estimates of mean temperature, temperature range and precipitation (averages for periods 1964–1994 and 1982–2012). Based on fixed effects models that allow for sub-region parameter heterogeneity, I find that an increase in intra-seasonal climate variability leads farmers in colder areas (
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2019.104740&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2019.104740&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2008Publisher:Elsevier BV Authors: Ricardo Labarta; Douglas White; Scott M. Swinton;Ricardo Labarta; Douglas White; Scott M. Swinton;Summary Using a recursive optimization model, we analyze how the incorporation of charcoal production by pioneer farmers in the Peruvian Amazon rainforest would affect household net returns and the rate of deforestation at the early stage of forest colonization. Because charcoal production diverts scarce dry-season labor from land clearing for agriculture, deforestation by pioneer farmers may be slower. The model predicts that after 10 years, a representative pioneer farmer who produces charcoal would earn 17% higher net income and clear 17% less forested area. A sensitivity analysis predicts that any additional labor would be chiefly devoted to charcoal production, reinforcing the conservation effect.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2007.04.011&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu14 citations 14 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2007.04.011&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1986Publisher:Elsevier BV Authors: Douglas Horton;Douglas Horton;Abstract A number of studies are being conducted to assess the impacts of international agricultural programs. This “second generation” of impact studies can draw on earlier assessments of the production impacts of new, high-yielding rice and wheat varieties, particularly in Asia. New approaches and new data are needed, however, to assess the production impacts of other types of new technology (e.g., pest control methods, seed systems, and post-harvest technology) that are used with other crops and livestock, particularly in Africa and Latin America. Innovative study approaches are also needed to assess the institutional impacts of international programs. Given the high degree of institutional interdependence which characterizes agricultural research and extension it is inappropriate to attribute production impacts at the farm or consumer levels to specific international programs, as has sometimes been done. As an alternative to the narrow production economics framework employed in most previous impact studies, an interdisciplinary approach is outlined.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/0305-750x(86)90062-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu9 citations 9 popularity Average influence Top 10% impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/0305-750x(86)90062-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu
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description Publicationkeyboard_double_arrow_right Article 2020Publisher:Elsevier BV Authors: Carmen Ponce;Carmen Ponce;Abstract Agricultural systems are highly sensitive to climate change. Most studies focus on the effect of heat and water availability on crop yields, but little is known about the impact of changes in intra-seasonal climate variability (particularly challenging in mountain regions). Also, beyond the effect on crop yields –mostly focused on single cropping systems and major world crops- little analysis has been done on more complex, diversified and low-input cropping systems like those prevalent in the Andean region. This study investigates whether Andean farmers respond to increasing climate variability by increasing crop diversity (measured by intercropping and crop diversification indices) and by switching to crops which better tolerate heterogeneous environmental conditions. Since previous studies show that crop diversification fosters resilience of agricultural systems, decreasing crop portfolio diversity in an increasingly variable environment may challenge farms sustainability. The data used in the analysis combines district-level socio-economic information from two agrarian censuses (1994 and 2012) with district-level climate estimates of mean temperature, temperature range and precipitation (averages for periods 1964–1994 and 1982–2012). Based on fixed effects models that allow for sub-region parameter heterogeneity, I find that an increase in intra-seasonal climate variability leads farmers in colder areas (
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2019.104740&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu25 citations 25 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2019.104740&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2008Publisher:Elsevier BV Authors: Ricardo Labarta; Douglas White; Scott M. Swinton;Ricardo Labarta; Douglas White; Scott M. Swinton;Summary Using a recursive optimization model, we analyze how the incorporation of charcoal production by pioneer farmers in the Peruvian Amazon rainforest would affect household net returns and the rate of deforestation at the early stage of forest colonization. Because charcoal production diverts scarce dry-season labor from land clearing for agriculture, deforestation by pioneer farmers may be slower. The model predicts that after 10 years, a representative pioneer farmer who produces charcoal would earn 17% higher net income and clear 17% less forested area. A sensitivity analysis predicts that any additional labor would be chiefly devoted to charcoal production, reinforcing the conservation effect.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2007.04.011&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu14 citations 14 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.worlddev.2007.04.011&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1986Publisher:Elsevier BV Authors: Douglas Horton;Douglas Horton;Abstract A number of studies are being conducted to assess the impacts of international agricultural programs. This “second generation” of impact studies can draw on earlier assessments of the production impacts of new, high-yielding rice and wheat varieties, particularly in Asia. New approaches and new data are needed, however, to assess the production impacts of other types of new technology (e.g., pest control methods, seed systems, and post-harvest technology) that are used with other crops and livestock, particularly in Africa and Latin America. Innovative study approaches are also needed to assess the institutional impacts of international programs. Given the high degree of institutional interdependence which characterizes agricultural research and extension it is inappropriate to attribute production impacts at the farm or consumer levels to specific international programs, as has sometimes been done. As an alternative to the narrow production economics framework employed in most previous impact studies, an interdisciplinary approach is outlined.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/0305-750x(86)90062-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu9 citations 9 popularity Average influence Top 10% impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/0305-750x(86)90062-8&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu