Dale W Johnson
Affiliation: University of Nevada
- Progressive N limitation in forests: review and implications for long-term responses to elevated CO2Dale W Johnson
Natural Resources and Environmental Science, University of Nevada, Reno 89557, USA
Ecology 87:64-75. 2006....
- Atmospheric mercury exchange with a tallgrass prairie ecosystem housed in mesocosmsJelena Stamenkovic
Department of Natural Resources and Environmental Science, University of Nevada, Reno, Nevada 89557, USA
Sci Total Environ 406:227-38. 2008..Accounting for ecosystem Hg inputs (precipitation, direct plant uptake of atmospheric Hg) and modeled net exchange between litter-and-plant covered soils, the tallgrass prairie was found to be a net annual sink of atmospheric Hg...
- Mercury distribution in two Sierran forest and one desert sagebrush steppe ecosystems and the effects of fireMark A Engle
Department of Natural Resources and Environmental Science, Mail Stop 370, University of Nevada, Reno, Nevada, 89557, USA
Sci Total Environ 367:222-33. 2006..0 to 5.1, 2.2 to 4.9, and 0.36+/-0.13 g ha(-1), respectively, with litter and vegetation being the most important sources...
- Fire effects on stable isotopes in a Sierran forested watershedLaurel Saito
Dep of Natural Resources and Environmental Science, Univ of Nevada Reno, Mail Stop 186, 1000 Valley Road, Reno, NV 89512, USA
J Environ Qual 36:91-100. 2007..Thus, the muffle furnace experiment supported the hypothesis, but it is as yet unconfirmed by actual wildfire field data...
- Experimental evidence against diffusion control of Hg evasion from soilsDale W Johnson
Department of Environmental and Resource Sciences, Fleischmann Agriculture Building, MS 370, University of Nevada, Reno, NV 89557, USA
Sci Total Environ 304:175-84. 2003..We recommend the use of the small wells in all future studies because they are much easier to install and provide more resolution of spatial and temporal patterns in soil gaseous Hg(0)...
- Nitrogen cycling during seven years of atmospheric CO2 enrichment in a scrub oak woodlandBruce A Hungate
Department of Biological Sciences and Merriam Powell Center for Environmental Research, Northern Arizona University, Flagstaff 86011, USA
Ecology 87:26-40. 2006..In N limited ecosystems, such changes in N cycling are likely to reduce the response of plant production to elevated CO2...
- Spatial analysis of a large magnitude erosion event following a Sierran wildfireErin M Carroll
Department of Natural Resources and Environmental Science, College of Agriculture, Biotechnology, and Natural Resources, University of Nevada Reno, Reno, NV 89512, USA
J Environ Qual 36:1105-11. 2007..High fuel loads now common to the Lake Tahoe Basin increase the risk that similar erosion events will become more commonplace, potentially contributing to the accelerated degradation of Lake Tahoe's water clarity...
- CO2 and N-fertilization effects on fine-root length, production, and mortality: a 4-year ponderosa pine studyDonald L Phillips
U S Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Research Laboratory, Western Ecology Division, 200 SW 35th St, Corvallis, OR, 97333, USA
Oecologia 148:517-25. 2006..This study showed the potential for juvenile ponderosa pine to increase fine-root C pools and C fluxes through root mortality in response to elevated CO2...
- CO2 elicits long-term decline in nitrogen fixationBruce A Hungate
Department of Biological Sciences and Merriam Powell Center for Environmental Research, Northern Arizona University, Flagstaff, AZ 86011, USA
Science 304:1291. 2004
- Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm yearJohn A Arnone
Desert Research Institute, Reno, Nevada 89512, USA
Nature 455:383-6. 2008..Our findings suggest that more frequent anomalously warm years, a possible consequence of increasing anthropogenic carbon dioxide levels, may lead to a sustained decrease in carbon dioxide uptake by terrestrial ecosystems...