12 projects

2009 to 2013

The Foodprints and Foodsheds project identifies the potential for local food systems based on regional soils information, food production estimates, population maps and dietary guidelines. The area needed to feed one person or a whole population center is calculated using GIS and optimization models. Minimizing the distance food must travel or maximizing economic return to land are factors that can be optimized.


Research in my lab examines the functional significance of animals in aquatic ecosystems. This includes examining the consequence of species loss as well the addition of novel organisms through invasion. In addition, we are interested in how organisms interact with their environment in an evolutionary context.


Together with researchers at Los Alamos National Laboratory and Duke University, I have been working analysis of early acute phase viral dynamics in HIV infected blood donors. The data come from longitudinal samples of HIV infected blood donors archived during the 1990s, and comprise pre-infection, acute infection and, in most cases, peak viremia and viral decline for each donor. In addition, there is information about immune cell status at each time point.


Intellectual property rights for plants have increased private investment and breeder numbers. This study examines the effect on the quality of wheat germplasm in the state of Washington. Using state variety testing data, the intellectual property rights (IPR) system was found to lead to more productive varieties from both public and private breeders.

2007 to 2012

Plant viruses invade a susceptible host to cause disease by transporting their genomes across the barrier of the plant cell wall. Doing this requires a unique class of proteins made by the virus, termed movement proteins. This process serves as a model for the transport of molecular complexes between plant cells and hence for the mechanism of cell-cell communication in plants.

2007 to 2016

Growers and consumers detest rotten onions. They cause financial losses to both groups. Most rots are caused by bacterial pathogens, and there are no good methods available to prevent the problem. If the losses from rot can be reduced or eliminated, everyone will be happier! In 2007, my program began to address bacterial disease problems of onions.


Hybrids of native and European grapes are widely planted in the Eastern and Midwestern U.S. However, so-called "hybrid" aromas typical of these crosses often compromise the flavor quality of wines from these grapes. Preventing these unpleasant aromas is difficult due to a lack of understanding of optimal growing conditions for these species and the hands-off approach many hybrid grape growers take.

2006 to 2010

The Howard Hughes Medical Institute (HHMI) has awarded Cornell a large grant since the 1990s. Two major areas are funded: Undergraduate research in the basic sciences, and outreach to science teachers. The undergraduate component focuses on a highly successful summer program in which students work in Cornell laboratories doing frontline research.


Fruit farmers and turfgrass managers must produce pesticide and fertilizer records on demand for EPA Worker Protection, NYS Dept. of Environmental Conservation, food safety audits, food processors, produce brokers, eco-markets, organic certifiers, etc. Trac Software has been documented to improve pesticide application record keeping and to facilitate generating reports. Since its invention in 2003 by Juliet Carroll, NYS IPM Program, over 500 fruit farmers in New York and worldwide have obtained Trac Software, and 98 percent continue using it.


Nutrition programming through Cooperative Extension programs focus not only on updated nutrition content but also the quality of program delivery and lasting behavioral impacts in the target audience. To this end, trainings on both nutrition content, facilitation methods and program management are delivered in county, regional, statewide and multi-state settings.