Reforesting and managing ecosystems have been proposed as ways to mitigate global warming and offset anthropogenic carbon emissions. The intent of our opinion piece is to provide a perspective on how well plants and ecosystems sequester carbon. The ability of individual plants and ecosystems to mine carbon dioxide from the atmosphere, …
Journal: Global Change Biology, Volume : (2018). DOI: 10.1111/gcb.14559 Sites: CA-Man, CA-NS1, CA-NS2, CA-NS3, CA-NS4, CA-NS5, CA-NS6, CA-NS7, CA-Qfo, CA-SF1, CA-SF2, CA-SF3, US-AR1, US-AR2, US-ARc, US-ARM, US-Blo, US-GBT, US-GLE, US-HAR, US-KS2, US-Me1, US-MMS, US-Myb, US-NC1, US-NC2, US-PFa, US-Snd, US-SRG, US-Ton, US-Tw1, US-Tw2, US-Tw3, US-Twt, US-Var, US-WCr
he ability to accurately predict changes of the carbon and energy balance on a regional scale is of great importance for assessing the effect of land use changes on carbon sequestration under future climate conditions. Here, a suite of land cover-specific Distributed Time Delay Neural Networks with a parameter adoption algorithm …
Journal: Neural Networks, Volume 108: 97-113 (2018). DOI: 10.1016/j.neunet.2018.08.004 Sites: US-Var
tThe Mediterranean-type oak/grass savanna of California is composed of widely spaced oak trees withunderstory grasses. These savanna regions are interspersed with large areas of more open grasslands.The ability of remotely sensed data (with various spatial resolutions) to monitor the phenology in thesewater-limited oak/grass savannas …
Journal: Agricultural And Forest Meteorology, Volume 237-238: 311-325 (2017). DOI: 10.1016/j.agrformet.2017.02.026 Sites: US-Ton, US-Var
Time series of vegetation indices (e.g. normalized difference vegetation index [NDVI]) and color indices (e.g. green chromatic coordinate [GCC]) based on radiometric measurements are now available at different spatial and temporal scales ranging from weekly satellite observations to sub-hourly in situ measurements …
Journal: Agricultural and Forest Meteorology, Volume : (2017). DOI: https://doi.org/10.1016/j.agrformet.2017.11.003 Sites: US-Ton, US-Var
Many ecophysiological and biogeochemical processes respond rapidly to changes in biotic and abiotic conditions, while ecosystem-level responses develop much more slowly (e.g., over months, seasons, years, or decades). To better understand the role of the slow responses in regulating interannual variability in NEE, we partitioned …
Journal: Agricultural and Forest Meteorology, Volume : 252-264 (2016). DOI: 10.1016/j.agrformet.2016.07.016 Sites: US-Ton, US-Var
The global terrestrial carbon sink offsets one-third of the world’s fossil fuel emissions, but the strength of this sink is highly sensitive to large-scale extreme events. In 2012, the contiguous United States experienced exceptionally warm temperatures and the most severe drought since the Dust Bowl era of the 1930s, resulting …
Journal: Proceedings of the National Academy of Sciences, Volume 113 (21): 5880-5885 (2016). DOI: 10.1073/pnas.1519620113 Sites: US-Bar, US-Ced, US-Ho1, US-KFS, US-Kon, US-Me2, US-Me6, US-MMS, US-Mpj, US-NR1, US-PFa, US-Slt, US-SRC, US-SRM, US-Ton, US-UMB, US-Var, US-Vcm, US-Vcp, US-Whs, US-Wjs, US-Wkg
Journal: Nature Climate Change, Volume 6 (11): 1023-1027 (2016). DOI: 10.1038/nclimate3114 Sites: US-ARM, US-Bar, US-Blk, US-Blo, US-Bo1, US-Br3, US-Dk1, US-Dk2, US-Dk3, US-Fmf, US-FR2, US-Fuf, US-GLE, US-IB1, US-IB2, US-KFS, US-Kon, US-KS2, US-Me1, US-Me2, US-MMS, US-MOz, US-MRf, US-Ne1, US-Ne3, US-NR1, US-Oho, US-SRG, US-SRM, US-Syv, US-Ton, US-UMB, US-Var, US-WBW, US-WCr, US-Whs, US-Wkg
It is necessary to partition eddy covariance measurements of carbon dioxide exchange into its offsetting gross fluxes, canopy photosynthesis, and ecosystem respiration, to understand the biophysical controls on the net fluxes. And independent estimates of canopy photosynthesis (G) and ecosystem respiration (R) are needed to validate …
Journal: Agricultural and Forest Meteorology, Volume 207: 117-126 (2015). DOI: 10.1016/j.agrformet.2015.03.010 Sites: CA-Ca1, CA-Ca2, CA-Ca3, CA-Let, CA-Mer, CA-NS1, CA-NS3, CA-NS5, CA-NS6, CA-NS7, CA-Oas, CA-Obs, CA-Ojp, CA-Qcu, CA-Qfo, CA-SJ2, CA-SJ3, CA-TP4, CA-WP1, US-ARM, US-Aud, US-Bo1, US-Ho1, US-Ho2, US-IB2, US-KS2, US-MMS, US-MOz, US-NC2, US-NR1, US-SO2, US-SO3, US-SO4, US-SP2, US-SP3, US-SRM, US-Ton, US-Tw3, US-UMB, US-Var, US-WBW, US-Wkg, US-Wrc
The proliferation of digital cameras co‐located with eddy covariance instrumentation provides new opportunities to better understand the relationship between canopy phenology and the seasonality of canopy photosynthesis. In this paper we analyze the abilities and limitations of canopy color metrics measured by digital repeat photography …
Journal: Ecological Applications, Volume 25 (1): 99-115 (2015). DOI: http://doi.org/10.1890/14-0005.1 Sites: US-ARM, US-Bar, US-Ha1, US-Ho1, US-MMS, US-MOz, US-NR1, US-UMB, US-UMd, US-Var, US-Wrc
Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (7): 1458-1473 (2014). DOI: 10.1002/2014JG002623 Sites: CA-Ca1, CA-Gro, CA-Let, CA-Oas, CA-Ojp, CA-Qfo, US-ARM, US-Dk3, US-Ha1, US-Ho1, US-IB2, US-Me2, US-MMS, US-MOz, US-Ne1, US-Ne2, US-Ne3, US-NR1, US-PFa, US-Syv, US-Ton, US-UMB, US-Var, US-WCr