Journal: Biogeosciences Discussions, Volume 10 (2): 3039-3077 (2013). DOI: 10.5194/bgd-10-3039-2013 Sites: US-UMB
Quantifying the response of soil respiration to past environmental conditions is critical for predicting how future climate and vegetation change will impact ecosystem carbon balance. Increased shrub dominance in semiarid grasslands has potentially large effects on soil carbon cycling. The goal of this study was to characterize the …
Journal: Ecosystems, Volume 16 (7): 1230-1247 (2013). DOI: 10.1007/s10021-013-9679-7 Sites: US-LS2
Journal: Journal Of Ecology, Volume 101 (6): 1471-1483 (2013). DOI: 10.1111/1365-2745.12161 Sites: US-LS2, US-SRM
A fully coupled land surface hydrologic model, Flux-PIHM, is developed by incorporating a land surface scheme into the Penn State Integrated Hydrologic Model (PIHM). The land surface scheme is adapted from the Noah land surface model. Because PIHM is capable of simulating lateral water flow and deep ground- water at spatial resolutions …
Journal: Journal Of Hydrometeorology, Volume 14 (5): 1401-1420 (2013). DOI: 10.1175/JHM-D-12-0145.1 Sites: US-SSH
Terrestrial ecosystem-atmosphere exchange of carbon, water vapor, and energy has been measured for over a decade at many sites globally. To minimize measurement and analysis errors, quality assurance data have been collected over short periods along-side tower instruments at AmeriFlux research sites. Theoretical and empirical error …
Journal: Journal of Geophysical Research - Biogeoscience, Volume 117 (G4): 1-15 (2012). DOI: 10.1029/2012JG002100 Sites:
The success of invasive aridland plants may depend on their utilization of precipitation not fully exploited by native species, which could lead to seasonally altered ecosystem carbon and water fluxes. We measured volumetric soil water across 25-cm profiles (θ25cm) and springtime whole-plant water- and carbon-fluxes of …
Journal: Plant Ecology, Volume 213 (8): 1229-1239 (2012). DOI: 10.1007/s11258-012-0081-x Sites: US-SRM
Northern peatlands are likely to be important in future carbon cycle-climate feedbacks due to their large carbon pools and vulnerability to hydrological change. Use of non-peatland-specific models could lead to bias in modeling studies of peatland-rich regions. Here, seven ecosystem models were used to simulate CO2fluxes …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G01031): n/a-n/a (2012). DOI: 10.1029/2011JG001862 Sites: US-Los
Tundra ecosystems are especially sensitive to climate change, which is particularly rapid in high northern latitudes resulting in significant alterations in temperature and soil moisture. Numerous studies have demonstrated that soil drying increases the respiration loss from wet Arctic tundra. And, warming and drying of tundra soils …
Journal: Global Biogeochemical Cycles, Volume 26 (GB2004): n/a-n/a (2012). DOI: 10.1029/2011GB004037 Sites: US-Bes
Permafrost soils are a significant global store of carbon (C) with the potential to become a large C source to the atmosphere. Climate change is causing permafrost to thaw, which can affect primary production and decomposition, therefore affecting ecosystem …
Journal: Ecosystems, Volume 15 (1): 162-173 (2012). DOI: 10.1007/s10021-011-9500-4 Sites: US-EML
In a suburban neighborhood of Minneapolis–Saint Paul, Minnesota, USA, we simultaneously measured net CO2 exchange of trees using sap flow and leaf gas exchange measurements, net CO2exchange of a turfgrass lawn using eddy covariance from a portable tower, and total surface-atmosphere CO2 fluxes (FC) …
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G03005): n/a-n/a (2012). DOI: 10.1029/2011JG001933 Sites: US-KUO