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Full-Text Articles in Life Sciences

Can Peers Improve Agricultural Revenue?, Tisorn Songsermsawas, Kathy Baylis, Ashwini Chhatre, Hope Michelson Jan 2015

Can Peers Improve Agricultural Revenue?, Tisorn Songsermsawas, Kathy Baylis, Ashwini Chhatre, Hope Michelson

Kathy Baylis

Crop revenues vary greatly among farmers and the source of that variation is not fully understood. Using a household survey from India, we estimate peer effects on cash crop revenue. Results show that 60% of farmers' revenue can be explained by peers. Peer effects in input expenditure and land allocation cannot fully explain the variation in revenue, implying peers may also associate with management, negotiation and marketing strategies. Although caste-based networks are important, their effect is substantially smaller than that of self-reported peers. Peer effects are strongest for agricultural peers and in the cultivation of a new crop.


How Effective Are Biodiversity Conservation Payments In Mexico?, Sebastien Costedoat, Esteve Corbera, Driss Ezzine De Blas, Jordi Honey-Roses, Kathy Baylis, Miguel Angel Catillo-Santiago Dec 2014

How Effective Are Biodiversity Conservation Payments In Mexico?, Sebastien Costedoat, Esteve Corbera, Driss Ezzine De Blas, Jordi Honey-Roses, Kathy Baylis, Miguel Angel Catillo-Santiago

Kathy Baylis

We assess the additional forest cover protected by 13 communities located in the Lacandon rainforest, Mexico, as a result of the economic incentives received through the country's national program of payments for biodiversity conservation. We use spatially explicit data at the intra-community level to define a credible counterfactual of conservation outcomes. We use covariate-matching specifications associated with spatially explicit variables and difference-in-difference estimators to determine the treatment effect. We estimate that the additional conservation represents between 12 and 14.7 percent of forest area enrolled in the program in comparison to control areas. Despite this high degree of additionality, we also …


A National Survey Of Managed Honey Bee 2013-2014 Annual Colony Losses In The Usa: Results From The Bee Informed Partnership, Katie V. Lee, Natalie Steinhauer, Karen Rennich, Michael E. Wilson, David R. Tarpy, Dewey M. Caron, Roslyn Rose, Keith S. Delaplane, Kathy Baylis, Eugene J. Lengerich, Jeff Pettis, John A. Skinner, J T. Wilkes, Dennis Vanengelsdorp Dec 2014

A National Survey Of Managed Honey Bee 2013-2014 Annual Colony Losses In The Usa: Results From The Bee Informed Partnership, Katie V. Lee, Natalie Steinhauer, Karen Rennich, Michael E. Wilson, David R. Tarpy, Dewey M. Caron, Roslyn Rose, Keith S. Delaplane, Kathy Baylis, Eugene J. Lengerich, Jeff Pettis, John A. Skinner, J T. Wilkes, Dennis Vanengelsdorp

Kathy Baylis

Honey bee colony losses are a major concern in the US and across the globe. Long-term data on losses are critical for putting yearly losses in context. US colony loss surveys have been conducted yearly since the winter of 2006-7. Here we report the results from the eighth annual survey on winter losses, and the second annual survey of summer and annual losses. There were 7,425 valid respondents (7,123 backyard, 190 sideline, and 112 commercial beekeepers) managing 497,855 colonies, 19% of the total US colonies. Total losses reported were 19.8% [95% CI: 19.3-20.3%] over the summer, 23.7% [95% CI: 23.3-24.1%] …