1a. Objectives (from AD-416)
To access the impact of the Natural Resources Conservation Service (NRCS)implemented wetland projects in the Mid-Atlantic region on the populations and activities of amphibian.
1b. Approach (from AD-416)
The presence or absence of amphibians in the Natural Resources Conservation Service (NRCS) implemented wetland projects will be accessed via a variety of techniques. These will include daytime vocalizations, egg mass counts, larval dipnet surveys, minnow trap surveys, and visual encounter surveys (VES) of adults and larvae. This will involve field visits to each site during appropriate seasons to conduct egg mass, larval, and VES. Frog loggers will be used to record calling male frogs.
3. Progress Report
This project is related to inhouse objective 3: Develop practices or technologies that enhance denitrification in riparian buffers and wetlands for improving water quality in streams. The field work for the amphibian component of the Natural Resources Conservation Service Mid-Atlantic Conservation Effects Assessment Project was completed in July 2011. Each of the 48 sites was sampled quantitatively at least four times between 2009 and 2011. Sample sites consisted of wetlands currently in agricultural use (prior converted [PC]), restored wetlands formerly in agricultural production, and natural sites. Twenty of the sites were located in northeastern North Carolina and southeastern Virginia, and 28 of the sites were located on the eastern shore of Maryland and Delaware. Several PC sites had standing water in associated ditches, allowing an assessment of the species that likely occurred in these wetlands before conversion to agriculture. The total number of frog and salamander species registered for the restored sites (13) in the study was higher than that for the PC (6) and natural (11) sites. These results suggest that the wetlands restored through the Wetlands Restoration Program provide the ecological services needed by most of the amphibians in the Mid-Atlantic region. Progress was monitored via planning meetings and site selection visits.