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Now showing items 1081-1100 of 1520

    • A Qualitative Analysis of The Southern Pine Beetle's Wildlife Impact 

      Maine, John D.; Leuschner, William A.; Tipton, Alan R. (Virginia Tech. Division of Forestry and Wildlife Resources, 1980)
      Wildlife's social value has long been known. Early attempts to place dollar values on wildlife were crude (Stains and Barkalow, 1951; Collins, 1959) and often incomprehensible. For example, Collins found that each deer ...
    • Quantifying climate sensitivity and climate-driven change in North American amphibian communities 

      Miller, David A. W.; Grant, Evan H. Campbell; Muths, Erin; Amburgey, Staci M.; Adams, Michael J.; Joseph, Maxwell B.; Waddle, J. Hardin; Johnson, Pieter T. J.; Ryan, Maureen E.; Schmidt, Benedikt R.; Calhoun, Daniel L.; Davis, Courtney L.; Fisher, Robert N.; Green, David M.; Hossack, Blake R.; Rittenhouse, Tracy A. G.; Walls, Susan C.; Bailey, Larissa L.; Cruickshank, Sam S.; Fellers, Gary M.; Gorman, Thomas A.; Haas, Carola A.; Hughson, Ward; Pilliod, David S.; Price, Steven J.; Ray, Andrew M.; Sadinski, Walt; Saenz, Daniel; Barichivich, William J.; Brand, Adrianne; Brehme, Cheryl S.; Dagit, Rosi; Delaney, Katy S.; Glorioso, Brad M.; Kats, Lee B.; Kleeman, Patrick M.; Pearl, Christopher A.; Rochester, Carlton J.; Riley, Seth P. D.; Roth, Mark; Sigafus, Brent H. (2018-09-25)
      Changing climate will impact species' ranges only when environmental variability directly impacts the demography of local populations. However, measurement of demographic responses to climate change has largely been limited ...
    • Quantifying Extreme Precipitation Forecasting Skill in High-Resolution Models Using Spatial Patterns: A Case Study of the 2016 and 2018 Ellicott City Floods 

      Zick, Stephanie E. (MDPI, 2020-01-25)
      Recent historic floods in Ellicott City, MD, on 30 July 2016 and 27 May 2018 provide stark examples of the types of floods that are expected to become more frequent due to urbanization and climate change. Given the profound ...
    • Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines 

      Grant, Evan H. Campbell; Miller, David A. W.; Schmidt, Benedikt R.; Adams, Michael J.; Amburgey, Staci M.; Chambert, Thierry; Cruickshank, Sam S.; Fisher, Robert N.; Green, David M.; Hossack, Blake R.; Johnson, Pieter T. J.; Joseph, Maxwell B.; Rittenhouse, Tracy A. G.; Ryan, Maureen E.; Waddle, J. Hardin; Walls, Susan C.; Bailey, Larissa L.; Fellers, Gary M.; Gorman, Thomas A.; Ray, Andrew M.; Pilliod, David S.; Price, Steven J.; Saenz, Daniel; Sadinski, Walt; Muths, Erin (Springer Nature, 2016-05-23)
      Since amphibian declines were first proposed as a global phenomenon over a quarter century ago, the conservation community has made little progress in halting or reversing these trends. The early search for a "smoking gun" ...
    • Quantitative Genetic Background of the Host Influences Gut Microbiomes in Chickens 

      Zhao, L. L.; Wang, G.; Siegel, P.; He, C.; Wang, H. Z.; Zhao, W. J.; Zhai, Z. X.; Tian, F. W.; Zhao, J. X.; Zhang, H.; Sun, Z. K.; Chen, W.; Zhang, Y.; Meng, H. (Nature Publishing Group, 2013-01)
      Host genotype and gender are among the factors that influence the composition of gut microbiota. We studied the population structure of gut microbiota in two lines of chickens maintained under the same husbandry and dietary ...
    • Range-wide Assessment of Habitat Suitability for Roanoke Logperch (Percina rex) 

      Anita M. Lahey; Paul L. Angermeier (Virginia Center for Transportation Innovation and Research, 2007-01)
      The Roanoke logperch (Percina rex) is a federally endangered darter endemic to Virginia. Knowledge of its distribution and habitat requirements is limited. Before this study, it was known to occur in the Smith, Pigg, Roanoke ...
    • A Range-Wide Experiment to Investigate Nutrient and Soil Moisture Interactions in Loblolly Pine Plantations 

      Will, Rodney E.; Fox, Thomas R.; Akers, Madison; Domec, Jean-Christophe; González-Benecke, Carlos; Jokela, Eric J.; Kane, Michael; Laviner, Marshall A.; Lokuta, Geoffrey; Markewitz, Daniel; McGuire, Mary Anne; Meek, Cassandra; Noormets, Asko; Samuelson, Lisa; Seiler, John R.; Strahm, Brian; Teskey, Robert; Vogel, Jason; Ward, Eric; West, Jason; Wilson, Duncan; Martin, Timothy A. (MDPI, 2015-06-03)
      The future climate of the southeastern USA is predicted to be warmer, drier and more variable in rainfall, which may increase drought frequency and intensity. Loblolly pine (Pinus taeda) is the most important ...
    • A Range-Wide Meta-Analysis of Wild Turkey Nesting Phenology and Spring Season Opening Dates 

      Whitaker, Darroch M.; Pack, James C.; Norman, Gary W.; Stauffer, Dean F.; Klopfer, Scott D. (Michigan Department of Natural Resources, 2005)
      Timing of nesting is an important consideration when setting opening dates for spring male-only wild turkey (Meleagris gallopavo) hunts. We conducted a meta-analysis in which we used mean dates of incubation initiation ...
    • Rapid assays for microbial degradation of 2-chlorophenol 

      Pal, H. S.; Murphy, T.; Carter, A. C.; Drew, S. W. (Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1980)
    • Rapid Life-History Diversification of an Introduced Fish Species across a Localized Thermal Gradient 

      Zhu, Fengyue; Rypel, Andrew L.; Murphy, Brian R.; Li, Zhongjie; Zhang, Tanglin; Yuan, Jing; Guo, Zhiqiang; Tang, Jianfeng; Liu, Jiashou (PLOS, 2014-02-04)
      Climatic variations are known to engender life-history diversification of species and populations at large spatial scales. However, the extent to which microgeographic variations in climate (e.g., those occurring within a ...
    • Rapid Removal of Zinc(II) from Aqueous Solutions Using a Mesoporous Activated Carbon Prepared from Agricultural Waste 

      Zhang, Xiaotao; Hao, Yinan; Wang, Ximing; Chen, Zhangjing (MDPI, 2017-08-28)
      A low-cost activated carbon (XSBLAC) prepared from Xanthoceras Sorbifolia Bunge hull via chemical activation was investigated to determine its adsorption and desorption properties for zinc(II) ...
    • Recent and Historical Environmental Change in Lake Drummond, Within the Great Dismal Swamp 

      Burdige, David Jay, 1956-; Slate, Jennifer; Hicks, Jeremy; Frazier, Melissa; Donalty, Sean (Virginia Water Resources Research Center, 2004)
    • Recent declines in salmon body size impact ecosystems and fisheries 

      Oke, K. B.; Cunningham, C. J.; Westley, P. A. H.; Baskett, M. L.; Carlson, S. M.; Clark, J.; Hendry, A. P.; Karatayev, V. A.; Kendall, N. W.; Kibele, J.; Kindsvater, H. K.; Kobayashi, K. M.; Lewis, B.; Munch, S.; Reynolds, J. D.; Vick, G. K.; Palkovacs, E. P. (2020-08-19)
      Declines in animal body sizes are widely reported and likely impact ecological interactions and ecosystem services. For harvested species subject to multiple stressors, limited understanding of the causes and consequences ...
    • Recent Developments in US Hardwood Lumber Markets and Linkages to Housing Construction 

      Buehlmann, Urs; Bumgardner, Matthew; Alderman, Delton (2017-09)
      The housing industry has long provided important markets for the higher-value hardwood lumber used in fixtures such as cabinets, flooring, and millwork. These markets have become even more important in the face of the ...
    • Recent Evaluation of Corbicula Form D Distribution in the Midwest, USA 

      Douglass, Sarah; Reasor, Emily; Tiemann, Jeremy; Stodola, Alison; McMurray, Stephen; Poulton, Barry (2020-01)
      The genus Corbicula contains one of the most common and successful aquatic invasive species to North America. Prior to 2015 two predominant species of Corbicula were known from the United States-C. fluminea and C. largillierti, ...
    • Recent Remote Sensing Innovations and Future Direction 

      Thomas, Valerie A.; Wynne, Randolph H.; Liknes, G. C.; Derwin, J. M.; Coulston, J. W.; Brooks, Evan B.; Finco, M. V.; Saxena, R.; Watson, Layne T.; Moisen, G. G.; Ruefenacht, B.; Megown, K. (2017-10-25)
    • Recommendations for improving water resources management in Virginia 

      Walker, William R.; Cox, William Edward, 1944- (Virginia Water Resources Research Center, Virginia Polytechnic Institute and State University, 1976)
    • Recommendations for University Tree-Care Programs 

      Schmitt-Harsh, Mikaela; Wiseman, P. Eric (Association of Physical Plant Administrators, 2019-11-18)
    • Reconciling larval and adult sampling methods to model growth across life-stages 

      Brooks, George C.; Gorman, Thomas A.; Jiao, Yan; Haas, Carola A. (2020-08-21)
      Individual growth rates are intrinsically related to survival and lifetime reproductive success and hence, are key determinants of population growth. Efforts to quantify age-size relationships are hampered by difficulties ...
    • Recovery and reuse of coagulants from treatment of water and wastewater 

      King, Paul H.; Chen, Ben Hsueh Hai, 1946-; Weeks, R. Kenneth (Water Resources Research Center, Virginia Polytechnic Institute and State University, 1975)
      The focus of water quality research in the decade ahead will emphasize the development of processes which will enable reclamation and reuse as opposed to wastewater treatment and disposal to a nearby water course. In th ...