Explore featured publications representing ongoing work being conducted by early career professionals across the Department of the Interior's Climate Science Centers and partner institutions. If you are a student or post-doc affiliated with one of the regional CSCs and would like to have your publications featured on this page, please contact us at

Southeast CSC

Variability in isotopic composition of base flow in two headwater streams of the southern Appalachians

Singh, N.K., Emanuel, R.E., & McGlynn, B.L.

2016 | Water Resources Research

We investigated the influence of hillslope scale topographic characteristics and the relative position of hillslopes along streams (i.e., internal catchment structure) on the isotopic composition of base flow in first-order, forested headwater streams at Coweeta Hydrologic Laboratory. The study focused on two adjacent forested catchments with different topographic characteristics.

Hydro-climatological influences on long-term dissolved organic carbon in a mountain stream of the southeastern United States

Singh, N.K. et al.

2016 | Journal of Environmental Quality

In the past decade, significant increases in surface water dissolved organic carbon (DOC) have been reported for large aquatic ecosystems of the Northern Hemisphere and have been attributed variously to global warming, altered hydrologic conditions, and atmospheric deposition, among other factors. We analyzed a 25-yr DOC record (1988-2012) available for a forested headwater stream in the United States and documented two distinct regimes of stream DOC trends.

Comparison of visual survey and mark-recapture population estimates of a benthic fish in Hawaii

Hain, E.F., Lamphere, B.A., Blum, M.J., McIntyre, P.B., Nelson, S.A.C. & Gilliam, J.F.

2016 | Transactions of the American Fisheries Society

Visual surveys are conducted to rapidly estimate population densities of stream fishes, often without calibration against more established or more widely used methods to determine precision and accuracy or to correct for potential biases. We compared population density estimates from a visual survey (VS) point quadrat method widely used in Hawaii with estimates from “in hand” individual and batch mark–recapture (BMR) methods.

Do biomass harvesting guidelines influence herpetofauna following harvests of logging residues for renewable energy?

Fritts, S., Moorman, C., Grodsky, S., et al.

2016 | Ecological Applications

Forests are a major supplier of renewable energy; however, gleaning logging residues for use as woody biomass feedstock could negatively alter habitat for species dependent on downed wood. Biomass Harvesting Guidelines (BHGs) recommend retaining a portion of woody biomass on the forest floor following harvest.

Quantifying Multi-scale Habitat Use of Woody Biomass by Southern Toads

2015 | Forest Ecology and Management

We examined habitat use of the southern toad (Anaxyrus terrestris) as an indicator of relationships between amphibians and woody biomass in pine plantations of the southeastern United States using a controlled enclosure experiment and a field-based radio-telemetry study. Toads used woody debris for diurnal cover, particularly during hot and dry weather, but used other cover sources as well.

Effects of processing time on blood and plasma samples from loggerhead sea turtles (Caretta caretta) for 1H-NMR-based metabolomics

Niemuth, J.N., Harms, C.A., & Stoskopf, M.K.

2015 | Herpetological Conservation and Biology

The use of metabolomics in veterinary medicine is growing, but still tends to be limited to laboratory or hospital settings. In this study, we examined the effects of delayed processing time for loggerhead sea turtle (Caretta caretta) whole blood and plasma samples under field conditions.

Global divergence of the human follicle mite Demodex folliculorum: Persistent associations between host ancestry and mite lineages

Palopoli, M.F. et al, including Thoemmes, M.S.

2015 | PNAS

Demodex mite lineages can be predicted by the ancestral geography of humans, where 27% of the total molecular variance of mites segregated according to the regional ancestries of their hosts. D. folliculorum populations are stable on an individual over the course of years or even across generations outside of the geographic region of birth or ancestry, and mite haplotypes were much more likely to be shared within families and between spouses than between unrelated individuals, indicating that mite transmission requires close contact. Additionally, D. folliculorum evolution reflects ancient human population divergences that are consistent with an out-of-Africa dispersal hypothesis, presenting a model system for further understanding the history of human movement.

Decomposition of sources of errors in seasonal streamflow forecasting over the U.S. Sunbelt

This research introduces a streamflow forecasting framework and then quantifies the error (uncertainty) added to the forecasts at each of the stages of the forecasting framework. The designed approach for error quantification can be generalized and applied to other research fields as well. 

2015 | Journal of Geological Research

Mazrooei, A., Sinha, T., Sankarasubramanian, A., Kumar, S., & Peters-Lidard, C.D.

Quantifying multi-scale habitat use of woody biomass by southern toads

2015 | Forest Ecology and Management
Female southern toad with a radio transmitter

Woody biomass extraction for use as a feedstock for renewable energy may remove woody debris that provides suitable micro-climates for amphibians. We examined habitat use of the southern toad (Anaxyrus terrestris) as an indicator of relationships between amphibians and woody biomass in pine plantations of the southeastern United States using a controlled enclosure experiment and a field-based radio-telemetry study.

Biomass harvesting guidelines affect downed woody debris retention

Fritts, S.R., Moorman, C.E., Hazel, D.W., Jackson, B.D.

2014 | Biomass and Bioenergy

Biomass Harvesting Guidelines (BHGs) resulted in retention of downed woody debris fractions approximate to those prescribed, suggesting BHGs can be implemented successfully in an operational setting.