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Full-Text Articles in Geography

Smallholder Farmers Spend Credit Primarily On Food: Gender Differences And Food Security Implications In A Changing Climate, Marissa Carranza, Meredith T. Niles Jul 2019

Smallholder Farmers Spend Credit Primarily On Food: Gender Differences And Food Security Implications In A Changing Climate, Marissa Carranza, Meredith T. Niles

College of Agriculture and Life Sciences Faculty Publications

In many low-income nations agriculture is used as the primary source of income, which in the face of a changing climate, is known to be at considerable risk for the smallholder farmers that rely on it. Financial resources may enable smallholder farmers to implement adaptation practices and diversify income and investments, which has the potential to affect household income and food security. Here we explore relationships between access to different types of financial resources among male and female-headed households and women vs. men, use of financial resources, and its relationship to food security. We use data from the CGIAR Climate …


Decision-Making In Livestock Biosecurity Practices Amidst Environmental And Social Uncertainty: Evidence From An Experimental Game, Scott C. Merrill, Christopher J. Koliba, Susan M. Moegenburg, Asim Zia, Jason Parker, Timothy Sellnow, Serge Wiltshire, Gabriela Bucini, Caitlin Danehy, Julia M. Smith Apr 2019

Decision-Making In Livestock Biosecurity Practices Amidst Environmental And Social Uncertainty: Evidence From An Experimental Game, Scott C. Merrill, Christopher J. Koliba, Susan M. Moegenburg, Asim Zia, Jason Parker, Timothy Sellnow, Serge Wiltshire, Gabriela Bucini, Caitlin Danehy, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

Livestock industries are vulnerable to disease threats, which can cost billions of dollars and have substantial negative social ramifications. Losses are mitigated through increased use of disease-related biosecurity practices, making increased biosecurity an industry goal. Currently, there is no industry-wide standard for sharing information about disease incidence or on-site biosecurity strategies, resulting in uncertainty regarding disease prevalence and biosecurity strategies employed by industry stakeholders. Using an experimental simulation game, with primarily student participants, we examined willingness to invest in biosecurity when confronted with disease outbreak scenarios. We varied the scenarios by changing the information provided about 1) disease incidence and …


Network Meta-Metrics: Using Evolutionary Computation To Identify Effective Indicators Of Epidemiological Vulnerability In A Livestock Production System Model, Serge Wiltshire, Asim Zia, Christopher Koliba, Gabriela Buccini, Eric Clark, Scott Merrill, Julie Smith, Susan Moegenburg Mar 2019

Network Meta-Metrics: Using Evolutionary Computation To Identify Effective Indicators Of Epidemiological Vulnerability In A Livestock Production System Model, Serge Wiltshire, Asim Zia, Christopher Koliba, Gabriela Buccini, Eric Clark, Scott Merrill, Julie Smith, Susan Moegenburg

College of Agriculture and Life Sciences Faculty Publications

We developed an agent-based susceptible / infective model which simulates disease incursions in the hog production chain networks of three U.S. states. Agent parameters, contact network data, and epidemiological spread patterns are output after each model run. Key network metrics are then calculated, some of which pertain to overall network structure, and others to each node’s positionality within the network. We run statistical tests to evaluate the extent to which each network metric predicts epidemiological vulnerability, finding significant correlations in some cases, but no individual metric that serves as a reliable risk indicator. To investigate the complex interactions between network …


Risk Attitudes Affect Livestock Biosecurity Decisions With Ramifications For Disease Control In A Simulated Production System, Gabriela Bucini, Scott C. Merrill, Eric Clark, Susan M. Moegenburg, Asim Zia, Christopher J. Koliba, Serge Wiltshire, Luke Trinity, Julia M. Smith Jan 2019

Risk Attitudes Affect Livestock Biosecurity Decisions With Ramifications For Disease Control In A Simulated Production System, Gabriela Bucini, Scott C. Merrill, Eric Clark, Susan M. Moegenburg, Asim Zia, Christopher J. Koliba, Serge Wiltshire, Luke Trinity, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

HOG producers' operational decisions can be informed by an awareness of risks associated with emergent and endemic diseases. Outbreaks of porcine epidemic diarrhea virus (PEDv) have been re-occurring every year since the first onset in 2013 with substantial losses across the hog production supply chain. Interestingly, a decreasing trend in PEDv incidence is visible. We assert that changes in human behaviors may underlie this trend. Disease prevention using biosecurity practices is used to minimize risk of infection but its efficacy is conditional on human behavior and risk attitude. Standard epidemiological models bring important insights into disease dynamics but have limited …


Willingness To Comply With Biosecurity In Livestock Facilities: Evidence From Experimental Simulations, Scott C. Merrill, Susan Moegenburg, Christopher J. Koliba, Asim Zia, Luke Trinity, Eric Clark, Gabriela Bucini, Serge Wiltshire, Timothy Sellnow, Deanna Sellnow, Julia M. Smith Jan 2019

Willingness To Comply With Biosecurity In Livestock Facilities: Evidence From Experimental Simulations, Scott C. Merrill, Susan Moegenburg, Christopher J. Koliba, Asim Zia, Luke Trinity, Eric Clark, Gabriela Bucini, Serge Wiltshire, Timothy Sellnow, Deanna Sellnow, Julia M. Smith

College of Agriculture and Life Sciences Faculty Publications

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Disease in U.S. animal livestock industries annually costs over a billion dollars. Adoption and compliance with biosecurity practices is necessary to successfully reduce the risk of disease introduction or spread. Yet, a variety …