Search Results - "Flanagan, Lawrence B."

Stimulation of both photosynthesis and respiration in response to warmer and drier conditions in a boreal peatland ecosystem by FLANAGAN, LAWRENCE B, SYED, KAMRAN H

“…Peatland ecosystems have been consistent carbon (C) sinks for millennia, but it has been predicted that exposure to warmer temperatures and drier conditions…”
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Multiple processes contribute to methane emission in a riparian cottonwood forest ecosystem by Flanagan, Lawrence B., Nikkel, Dylan J., Scherloski, Lauren M., Tkach, Rachel E., Smits, Kristian M., Selinger, L. Brent, Rood, Stewart B.

“…Summary Methane emission from trees may partially or completely offset the methane sink in upland soils, the only process that has been regularly included in…”
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Diurnal and seasonal variation in methane emissions in a northern Canadian peatland measured by eddy covariance by LONG, KEVIN D, FLANAGAN, LAWRENCE B, CAI, TIEBO

“…Eddy covariance measurements of methane (CH₄) net flux were made in a boreal fen, typical of the most abundant peatlands in western Canada during May-September…”
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Lateral subsurface flow modulates forest mortality risk to future climate and elevated CO2 by Tai, Xiaonan, Venturas, Martin D, Mackay, D Scott, Brooks, Paul D, Flanagan, Lawrence B

“…Forest mortality has been widely observed across the globe during recent episodes of drought and extreme heat events. But the future of forest mortality…”
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How climate and vegetation type influence evapotranspiration and water use efficiency in Canadian forest, peatland and grassland ecosystems by Brümmer, Christian, Black, T. Andrew, Jassal, Rachhpal S., Grant, Nicholas J., Spittlehouse, David L., Chen, Baozhang, Nesic, Zoran, Amiro, Brian D., Arain, M. Altaf, Barr, Alan G., Bourque, Charles P.-A., Coursolle, Carole, Dunn, Allison L., Flanagan, Lawrence B., Humphreys, Elyn R., Lafleur, Peter M., Margolis, Hank A., McCaughey, J. Harry, Wofsy, Steven C.

“…► We analyzed the effects of climatic factors and vegetation type on evapotranspiration and water use efficiency for mature forest, grassland and peatland…”
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Variability in exchange of CO₂ across 12 northern peatland and tundra sites by LUND, MAGNUS, LAFLEUR, PETER M, ROULET, NIGEL T, LINDROTH, ANDERS, CHRISTENSEN, TORBEN R, AURELA, MIKA, CHOJNICKI, BOGDAN H, FLANAGAN, LAWRENCE B, HUMPHREYS, ELYN R, LAURILA, TUOMAS, OECHEL, WALTER C, OLEJNIK, JANUSZ, RINNE, JANNE, SCHUBERT, PER, NILSSON, MATS B

“…Many wetland ecosystems such as peatlands and wet tundra hold large amounts of organic carbon (C) in their soils, and are thus important in the terrestrial C…”
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Interannual variation of evapotranspiration from forest and grassland ecosystems in western canada in relation to drought by Zha, Tianshan, Barr, Alan G., van der Kamp, Garth, Black, T. Andy, McCaughey, J. Harry, Flanagan, Lawrence B.

“…▶ Climate models predict rising temperatures and more frequent and prolonged droughts, particularly in the northern hemisphere and in the Canadian Prairies…”
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Productivity of riparian Populus forests: Satellite assessment along a prairie river with an environmental flow regime by Zimmerman, Oscar R., Rood, Stewart B., Flanagan, Lawrence B.

“…In semiarid regions, the growth and survival of cottonwoods (riparian Populus species) depend on river water supplementing the limited precipitation…”
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Interacting effects of temperature, soil moisture and plant biomass production on ecosystem respiration in a northern temperate grassland by Flanagan, Lawrence B., Johnson, Bruce G.

“…Chamber measurements of total ecosystem respiration (TER) in a native Canadian grassland ecosystem were made during two study years with different…”
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Warmer and drier conditions stimulate respiration more than photosynthesis in a boreal peatland ecosystem: Analysis of automatic chambers and eddy covariance measurements by CAI, TIEBO, FLANAGAN, LAWRENCE B, SYED, KAMRAN H

“…Continuous half-hourly net CO₂ exchange measurements were made using nine automatic chambers in a treed fen in northern Alberta, Canada from June-October in…”
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On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums by Ryu, Youngryel, Baldocchi, Dennis D., Black, T. Andrew, Detto, Matteo, Law, Beverly E., Leuning, Ray, Miyata, Akira, Reichstein, Markus, Vargas, Rodrigo, Ammann, Christof, Beringer, Jason, Flanagan, Lawrence B., Gu, Lianhong, Hutley, Lindsay B., Kim, Joon, McCaughey, Harry, Moors, Eddy J., Rambal, Serge, Vesala, Timo

“…The regular monitoring of evapotranspiration from satellites has been limited because of discontinuous temporal coverage, resulting in snapshots at a…”
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On the use of MODIS EVI to assess gross primary productivity of North American ecosystems by Sims, Daniel A., Rahman, Abdullah F., Cordova, Vicente D., El‐Masri, Bassil Z., Baldocchi, Dennis D., Flanagan, Lawrence B., Goldstein, Allen H., Hollinger, David Y., Misson, Laurent, Monson, Russell K., Oechel, Walter C., Schmid, Hans P., Wofsy, Steven C., Xu, Liukang

“…Carbon flux models based on light use efficiency (LUE), such as the MOD17 algorithm, have proved difficult to parameterize because of uncertainties in the LUE…”
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Characterizing spatial representativeness of flux tower eddy-covariance measurements across the Canadian Carbon Program Network using remote sensing and footprint analysis by Chen, Baozhang, Coops, Nicholas C., Fu, Dongjie, Margolis, Hank A., Amiro, Brian D., Black, T. Andrew, Arain, M. Altaf, Barr, Alan G., Bourque, Charles P.-A., Flanagan, Lawrence B., Lafleur, Peter M., McCaughey, J. Harry, Wofsy, Steven C.

“…We describe a pragmatic approach for evaluating the spatial representativeness of flux tower measurements based on footprint climatology modeling analyses of…”
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A multi-site analysis of random error in tower-based measurements of carbon and energy fluxes by Richardson, Andrew D., Hollinger, David Y., Burba, George G., Davis, Kenneth J., Flanagan, Lawrence B., Katul, Gabriel G., William Munger, J., Ricciuto, Daniel M., Stoy, Paul C., Suyker, Andrew E., Verma, Shashi B., Wofsy, Steven C.

“…Measured surface-atmosphere fluxes of energy (sensible heat, H, and latent heat, LE) and CO 2 ( FCO 2) represent the “true” flux plus or minus potential random…”
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Seasonal and interannual variation in carbon dioxide exchange and carbon balance in a northern temperate grassland by Flanagan, Lawrence B., Wever, Linda A., Carlson, Peter J.

“…Net ecosystem carbon dioxide (CO2) exchange (NEE) was measured in a northern temperate grassland near Lethbridge, Alberta, Canada for three growing seasons…”
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Comparison of ecosystem water-use efficiency among Douglas-fir forest, aspen forest and grassland using eddy covariance and carbon isotope techniques by Ponton, StÉphane, Flanagan, Lawrence B, Alstad, Karrin P, Johnson, Bruce G, Morgenstern, Kai, Kljun, Natascha, Black, T. Andrew, Barr, Alan G

“…Comparisons were made among Douglas-fir forest, aspen (broad leaf deciduous) forest and wheatgrass (C₃) grassland for ecosystem-level water-use efficiency…”
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CO2 fluxes at northern fens and bogs have opposite responses to inter-annual fluctuations in water table by Sulman, Benjamin N., Desai, Ankur R., Saliendra, Nicanor Z., Lafleur, Peter M., Flanagan, Lawrence B., Sonnentag, Oliver, Mackay, D. Scott, Barr, Alan G., van der Kamp, Garth

“…This study compares eddy‐covariance measurements of carbon dioxide fluxes at six northern temperate and boreal peatland sites in Canada and the northern United…”
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Impact of hydrological variations on modeling of peatland CO2 fluxes: Results from the North American Carbon Program site synthesis by Sulman, Benjamin N., Desai, Ankur R., Schroeder, Nicole M., Ricciuto, Dan, Barr, Alan, Richardson, Andrew D., Flanagan, Lawrence B., Lafleur, Peter M., Tian, Hanqin, Chen, Guangsheng, Grant, Robert F., Poulter, Benjamin, Verbeeck, Hans, Ciais, Philippe, Ringeval, Bruno, Baker, Ian T., Schaefer, Kevin, Luo, Yiqi, Weng, Ensheng

“…Northern peatlands are likely to be important in future carbon cycle‐climate feedbacks due to their large carbon pools and vulnerability to hydrological…”
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Photosynthesis, chlorophyll fluorescence and spectral reflectance in Sphagnum moss at varying water contents by Van Gaalen, K. Eric, Flanagan, Lawrence B, Peddle, Derek R

“…Moss samples from the Fluxnet-Canada western peatland flux station in the Boreal Region of Alberta were measured in the laboratory to obtain the net…”
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Summer carbon dioxide and water vapor fluxes across a range of northern peatlands by Humphreys, Elyn R., Lafleur, Peter M., Flanagan, Lawrence B., Hedstrom, Newell, Syed, Kamran H., Glenn, Aaron J., Granger, Raoul

“…Northern peatlands are a diverse group of ecosystems varying along a continuum of hydrological, chemical, and vegetation gradients. These ecosystems contain…”
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