3 CANR professors awarded UDRF projects

July 17, 2013 under CANR News

Jeff Buler studies ticks across newark, delawareDelaware has one of the highest incidence rates of Lyme disease in the United States, according to the Centers for Disease Control. The tick-borne disease can have debilitating consequences in humans, dogs, even cats.

University of Delaware scientist Jeffrey Buler aims to see the number of infections decline.

“In urban areas, humans face the greatest exposure to infected ticks along forest edges,” says Buler, who is an assistant professor of wildlife ecology in UD’s College of Agriculture and Natural Resources.

With funding from the University of Delaware Research Foundation (UDRF), Buler will use radio telemetry to track bird movements in a network of 21 fragmented patches of forest in and around Newark, Del. He wants to better understand the role that birds may play in dispersing ticks in these forested areas.

UDRF, a private corporation chartered in 1955, awards seed funding on a competitive basis to researchers early in their careers at UD.

“The University of Delaware Research Foundation is tremendously valuable to our research community, particularly in these times of federal funding austerity,” says Charlie Riordan, UD vice provost for research. “These seed funds are critical for our new faculty to collect the preliminary data necessary to establish proof of concept and convince the funding agencies their ideas are worth further investment.”

A holistic approach to reduce tick-borne diseases in an urban landscape. Wildlife ecologist Jeff Buler and doctoral student Solny Adalsteinsson will study bird movements in 21 forest fragments in and around Newark, Del., to better understand how birds influence tick survival and distribution. This project will contribute to the development of an Integrated Pest Management (IPM) strategy to manage ticks that spread Lyme disease.

Impact of land-use activities on pollinators. Deborah Delaney, assistant professor of entomology and wildlife ecology, will survey pollinator communities in northern Delaware to determine pesticide exposure levels in spring-summer 2013 and 2014 during the bloom periods for many trees and shrubs. Exposure risk will be linked with land-use activities such as agriculture, suburban lawns and gardens, roads, parking lots and other impervious surfaces.

Exploring plant immortality. Although climate-induced stress has caused plant mortalities worldwide, some plants native to the Baja desert can live over 500 years. Rodrigo Vargas Ramos, assistant professor of plant and soil science, will conduct experiments to understand the physiological mechanisms of resilience of long-lived plants in arid ecosystems, with special emphasis on carbon allocation.

Article by Tracey Bryant

Photo by Danielle Quigley

To read about the rest of the UDRF projects, check out the full article on UDaily.

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Study to quantify turbine impact on birds and bats

March 7, 2011 under CANR News

A study will quantify the impact of the wind turbine at UD's Hugh R. Sharp Campus in Lewes on birds and bats.

The University of Delaware’s 2-megawatt wind turbine is the site of new research that will help answer a common question about the alternative energy producers: How do they affect birds and bats?

The two-year project, which will assess the mortality risk of birds and bats around the turbine, is led by UD Department of Entomology and Wildlife Ecology researchers Jeffrey Buler and Gregory Shriver. It is funded by First State Marine Wind, a partnership between UD-owned Blue Hen Wind and turbine manufacturer Gamesa. The Delaware Department of Natural Resources and Environmental Control (DNREC) also committed funds to support the effort.

A complementary project at the wind turbine that focuses solely on bats is being conducted by an expert at Delaware State University and is funded by the Maryland Department of Natural Resources.

While a University-commissioned pre-construction study found that the turbine’s impacts on birds are likely to be minimal, that study also recommended that UD undertake post-construction monitoring. One motivating factor is the machine’s location at UD’s Hugh R. Sharp Campus in Lewes, which sits along an important international flyway stopover for migrating birds. UD and Gamesa thus placed a priority on this research once the turbine was up and running (it began producing power in summer 2010).

The research also fulfills UD obligations under the federal National Environmental Policy Act. UD has been working closely with U.S. Fish and Wildlife Service, DNREC and other stakeholders on the scope of the study.

“The results of the study will be useful for other coastal communities considering wind turbines and ought to provide some useful lessons for offshore wind energy projects,” said Jeremy Firestone, associate professor of marine policy. Firestone is a wind energy expert and faculty member in UD’s College of Earth, Ocean, and Environment (CEOE) and CEOE’s Center for Carbon-free Power Integration (CCPI).

The UD project began March 1, with spring and fall sampling periods focusing on birds and bats migrating through the area and summer and winter periods on resident bird and bat flight activity.

During each of the four seasons, the researchers will use a variety of techniques to collect data. Acoustic monitoring, visual surveys, radar, and thermal imaging will provide information on bird and bat traffic and flight patterns. Spring and fall carcass searches around the turbine will help determine the fatality rate.

Local and regional weather data, which will help researchers understand bird and bat movement, will be provided by a nearby meteorological tower and the National Weather Service.

“We want to monitor how much bird and bat activity there is in the vicinity of the turbine so we have a context for how much risk there may be for them to collide with the turbine,” said Buler, who specializes in using radar to track bird migration.

The scientists also want to know which birds and bats are moving through the area. Although the main focus is on migrating land birds and bats, other types of birds also occur near the turbine throughout the year. These include raptors, waterfowl, marsh birds, and shorebirds.

The team expects to have a final report of data and analysis completed by December 2013. They will present findings at technical meetings and publish them in scientific journals. The researchers also will share their bat data with Delaware State’s Kevina Vulinec, an expert on the winged mammals whose research looks to determine the type of bats around the turbine and their behavior.

“We are pleased by the collaboration with Delaware State University,” Firestone said. “These research projects are a prime example of how the UD wind turbine can serve as a platform for important research that will benefit society.”

Article by Elizabeth Boyle
Photo by Kathy F. Atkinson

This article can also be viewed online on UDaily by clicking here.

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