AmeriFlux Publications from the Community

A Biogeochemical Compromise: The High Methane Cost Of Sequestering Carbon In Restored Wetlands
Hemes, K. S., Chamberlain, S. D., Eichelmann, E., Knox, S. H., Baldocchi, D. D.

Peatland drainage is an important driver of global soil carbon loss and carbon dioxide (CO2) emissions. Restoration of peatlands by re‐flooding reverses CO2 losses at the cost of increased methane (CH4) emissions, presenting a biogeochemical compromise. While restoring peatlands is a potentially effective method for sequestering …

Journal: Geophysical Research Letters, Volume : (2018), ISBN . DOI: 10.1029/2018GL077747 Sites: US-Myb, US-Tw1, US-Tw4

A Unique Combination Of Aerodynamic And Surface Properties Contribute To Surface Cooling In Restored Wetlands Of The Sacramento-San Joaquin Delta, California
Hemes, K. S., Eichelmann, E., Chamberlain, S., Knox, S. H., Oikawa, P. Y., Sturtevant, C., Verfaillie, J., Szutu, D., Baldocchi, D. D.

Land use change and management affect climate by altering both the biogeochemical and biophysical interactions between the land and atmosphere. Whereas climate policy often emphasizes the biogeochemical impact of land use change, biophysical impacts, including changes in reflectance, energy partitioning among sensible and latent …

Journal: Journal Of Geophysical Research: Biogeosciences, Volume : (2018), ISBN . DOI: 10.1029/2018JG004494 Sites: US-Myb, US-Tw1, US-Tw3, US-Tw4

The Effect Of Land Cover Type And Structure On Evapotranspiration From Agricultural And Wetland Sites In The Sacramento–San Joaquin River Delta, California
Eichelmann, E., Hemes, K. S., Knox, S. H., Oikawa, P. Y., Chamberlain, S. D., Sturtevant, C., Verfaillie, J., Baldocchi, D. D.

Water is a limited and valuable resource in California. A large proportion of the fresh water for southern California is supplied by the Sacramento and San Joaquin rivers. With recent efforts to restore large areas of land in the Sacramento–San Joaquin Delta region from farmland to managed wetlands, it is important to investigate …

Journal: Agricultural And Forest Meteorology, Volume 256-257: 179-195 (2018), ISBN . DOI: 10.1016/j.agrformet.2018.03.007 Sites: US-Myb, US-Snd, US-Tw1, US-Tw3, US-Tw4, US-Twt

Evaluation Of Density Corrections To Methane Fluxes Measured By Open-Path Eddy Covariance Over Contrasting Landscapes
Chamberlain, S. D., Verfaillie, J., Eichelmann, E., Hemes, K. S., Baldocchi, D. D.

Corrections accounting for air density fluctuations due to heat and water vapour fluxes must be applied to the measurement of eddy-covariance fluxes when using open-path sensors. Experimental tests and ecosystem observations have demonstrated the important role density corrections play in accurately quantifying carbon dioxide ( CO …

Journal: Boundary-Layer Meteorology, Volume : (2017), ISBN . DOI: 10.1007/s10546-017-0275-9 Sites: US-Myb, US-Snd, US-Tw1, US-Tw3, US-Tw4, US-Twt

Using digital camera and Landsat imagery with eddy covariance data to model gross primary production in restored wetlands
Knox, Sara Helen Dronova, Iryna Sturtevant, Cove Oikawa, Patricia Y. Matthes, Jaclyn Hatala Verfaillie, Joseph Baldocchi, Dennis

Wetlands have the ability to accumulate large amounts of carbon (C), and therefore wetland restoration has been proposed as a means of sequestering atmospheric carbon dioxide (CO2) to help mitigate climate change. There is a growing interest in using the C services of wetlands to help reduce habitat loss and finance restoration projects. …

Journal: Agricultural and Forest Meteorology, Volume 237–238: 233-245 (2017), ISBN . DOI: http://dx.doi.org/10.1016/j.agrformet.2017.02.020 Sites: US-Myb, US-Tw1

Evaluation of a hierarchy of models reveals importance of substrate limitation for predicting carbon dioxide and methane exchange in restored wetlands
Oikawa, P. Y.; Jenerette, G. D.; Knox, S. H.; Sturtevant, C.; Verfaillie, J.; Dronova, I.; Poindexter, C. M. ; Eichelmann, E.; Baldocchi, D. D.

Wetlands and flooded peatlands can sequester large amounts of carbon (C) and have high greenhouse gas mitigation potential. There is growing interest in financing wetland restoration using C markets; however, this requires careful accounting of both CO2 and CH4 exchange at the ecosystem scale. Here we present a new model, the PEPRMT …

Journal: Journal of Geophysical Research: Biogeosciences, Volume 122 (1): 145-167 (2017), ISBN . DOI: 10.1002/2016JG003438 Sites: US-Myb, US-Tw1, US-Tw4

2016. Effects of seasonality, transport-pathway, and spatial structure on greenhouse gas fluxes in a restored wetland.
McNicol, G., C. S. Sturtevant, S. H. Knox, I. Dronova, D. D. Baldocchi, and W. L. Silver.

Journal: Global Change Biology, Volume : nnn-nnn (2016), ISBN . DOI: 10.1111/gcb.13580 Sites: US-Myb

2015. Identifying scale-emergent, non-linear, asynchronous processes of wetland methane exchange.
Sturtevant, C., B. L. Ruddell, S. H. Knox, J. Verfaillie, J. H. Matthes, P. Y. Oikawa, and D. Baldocchi.

Journal: Journal of Geophysical Research: Biogeosciences, Volume 121: 188-204 (2015), ISBN . DOI: 10.1002/2015jg003054 Sites: US-Myb

Agricultural peatland restoration: effects of land-use change on greenhouse gas (CO2 and CH4) fluxes in the Sacramento-San Joaquin Delta
Knox, S. H.,, Sturtevant, C., Matthes, J.H., Koteen, L., Verfaillie,J., Baldocchi. D.

Agricultural drainage of organic soils has resulted in vast soil subsidence and contributed to increased atmospheric carbon dioxide (CO2) concentrations. The Sacramento-San Joaquin Delta in California was drained over a century ago for agriculture and human settlement and has since experienced subsidence rates that are among the …

Journal: Global Change Biology, Volume 21: 750-765 (2014), ISBN . DOI: 10.1111/gcb.12745 Sites: US-Myb, US-Snd, US-Tw1, US-Tw2, US-Twt

Parsing The Variability In Ch4 flux At A Spatially Heterogeneous Wetland: Integrating Multiple Eddy Covariance Towers With High-Resolution Flux Footprint Analysis
Matthes, J. H., Sturtevant, C., Verfaillie, J., Knox, S., Baldocchi, D.

Restored wetlands are a complex mosaic of open water and new and old emergent vegetation
patches, where multiple environmental and biological drivers contribute to the measured heterogeneity in
methane (CH4) flux. In this analysis, we replicated the measurements of CH4 flux using the eddy covariance
technique at three tower locations …

Journal: Journal Of Geophysical Research: Biogeosciences, Volume 119 (7): 1322-1339 (2014), ISBN . DOI: 10.1002/2014JG002642 Sites: US-Myb

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