Publications

Publications Found: 26
Modeling Soil And Biomass Carbon Responses To Declining Water Table In A Wetland-Rich Landscape
Sulman, B. N., Desai, A. R., Mladenoff, D. J.

Peatlands and forested wetlands can cover a large fraction of the land area and contain a majority of the regional carbon pool in wet northern temperate landscapes. We used the LANDIS-II forest landscape succession model coupled with a model of plant community …


Journal: Ecosystems, Volume 16 (3): 491-507 (2013), ISBN . DOI: 10.1007/s10021-012-9624-1 Sites: US-Los

Modelling Contrasting Responses Of Wetland Productivity To Changes In Water Table Depth
Grant, R.F., Desai, A.R.,  Sulman, B.N.

Responses of wetland productivity to changes in water table depth (WTD)
are controlled by complex interactions among several soil and plant
processes, and hence are site-specific rather than general in nature.
Hydrological controls on wetland productivity were studied by
representing …


Journal: Biogeosciences, Volume 9 (11): 4215-4231 (2012), ISBN . DOI: 10.5194/bg-9-4215-2012 Sites: US-Los

Impact of Hydrological Variations on Modeling of Peatland CO2 Fluxes: Results From the North American Carbon Program Site Synthesis
Sulman, B. N., Desai, A. R., Schroeder, N. M., Ricciuto, D., Barr, A., Richardson, A. D., Flanagan, L. B., Lafleur, P. M., Tian, H., Chen, G., Grant, R. F., Poulter, B., Verbeeck, H., Ciais, P., Ringeval, B., Baker, I. T., Schaefer, K., Luo, Y., Weng, E.

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), ISBN . DOI: 10.1029/2011JG001862 Sites: US-Los

CO2 Fluxes At Northern Fens And Bogs Have Opposite Responses To Inter-Annual Fluctuations In Water Table
Sulman, B. N., Desai, A. R., Saliendra, N. Z., Lafleur, P. M., Flanagan, L. B., Sonnentag, O., Mackay, D. S., Barr, A. G., van der Kamp, G.

This study compares eddy-covariance measurements of carbon dioxide fluxes at six northern temperate and boreal peatland sites in Canada and the northern United States of America, representing both bogs and fens. The two peatland types had opposite responses of gross ecosystem photosynthesis (GEP) and ecosystem respiration (ER) to …


Journal: Geophysical Research Letters, Volume 37 (19): n/a-n/a (2010), ISBN . DOI: 10.1029/2010GL044018 Sites: US-Los

Climatic And Phenological Controls On Coherent Regional Interannual Variability Of Carbon Dioxide Flux In A Heterogeneous Landscape
Desai, A.R.

The climate sensitivity of plant seasonal life cycles, or phenology, may impart significant carbon cycle feedbacks on climatic change. Analysis of interannual ecosystem carbon exchange provides one way to assess this climate sensitivity. Multiyear eddy covariance carbon dioxide flux observations from five different ecosystems (deciduous …


Journal: Journal Of Geophysical Research, Volume 115 (G00J02): n/a-n/a (2010), ISBN . DOI: 10.1029/2010JG001423 Sites: US-Los, US-PFa, US-Syv, US-WCr

Contrasting Carbon Dioxide Fluxes Between A Drying Shrub Wetland In Northern Wisconsin, USA, And Nearby Forests
Sulman, B.N.,  Desai, A.R., Cook, B.D., Saliendra, N., Mackay, D.S.

Wetland biogeochemistry is strongly influenced by water and temperature dynamics, and these interactions are currently poorly represented in ecosystem and climate models. A decline in water table of approximately 30 cm was observed at a wetland in Northern Wisconsin, USA over a period from 2001–2007, which was highly correlated …


Journal: Biogeosciences, Volume 6 (6): 1115-1126 (2009), ISBN . DOI: 10.5194/bg-6-1115-2009 Sites: US-Los

Influence Of Vegetation And Seasonal Forcing On Carbon Dioxide Fluxes Across The Upper Midwest, Usa: Implications For Regional Scaling
Desai, A. R., Noormets, A., Bolstad, P. V., Chen, J., Cook, B. D., Davis, K. J., Euskirchen, E. S., Gough, C., Martin, J. G., Ricciuto, D. M., Schmid, H. P., Tang, J., Wang, W.

Carbon dioxide fluxes were examined over the growing seasons of 2002 and 2003 from 14 different sites in Upper Midwest (USA) to assess spatial variability of ecosystem–atmosphere CO2 exchange. These sites were exposed to similar temperature/precipitation regimes and spanned a range of vegetation types typical of the …


Journal: Agricultural And Forest Meteorology, Volume 148 (2): 288-308 (2008), ISBN . DOI: 10.1016/j.agrformet.2007.08.001 Sites: US-Los, US-PFa, US-Syv, US-WCr, US-Wi0, US-Wi1, US-Wi2, US-Wi3, US-Wi4, US-Wi6, US-Wi8

Carbon Exchange And Venting Anomalies In An Upland Deciduous Forest In Northern Wisconsin, USA
Cook, B. D., Davis, K. J., Wang, W., Desai, A., Berger, B. W., Teclaw, R. M., Martin, J. G., Bolstad, P. V., Bakwin, P. S., Yi, C., Heilman, W.

Turbulent fluxes of carbon, water vapor, and temperature were continuously measured above an upland forest in north central Wisconsin during 1999 and 2000 using the eddy covariance method. Maple (Acer saccharum), basswood (Tilia americana), and green ash (Fraxinus pennsylvanica) species found in this forest …


Journal: Agricultural And Forest Meteorology, Volume 126 (3-4): 271-295 (2004), ISBN . DOI: 10.1016/j.agrformet.2004.06.008 Sites: US-Los, US-PFa, US-WCr

Stem Wood Properties Of Populus Tremuloides, Betula Papyrifera And Acer Saccharum Saplings After 3 Years Of Treatments To Elevated Carbon Dioxide And Ozone
Kaakinen, S., Kostiainen, K., Ek, F., Saranpaa, P., Kubiske, M. E., Sober, J., Karnosky, D. F., Vapaavuori, E.

The aim of this study was to examine the effects of elevated carbon dioxide [CO2] and ozone [O3] and their interaction on wood chemistry and anatomy of …


Journal: Global Change Biology, Volume 10 (9): 1513-1525 (2004), ISBN . DOI: 10.1111/j.1365-2486.2004.00814.x Sites: US-Los

Regional Carbon Dioxide Fluxes From Mixing Ratio Data
Bakwin, P. S., Davis, K. J., Yi, C., Wofsy, S. C., Munger, J. W., Haszpra, L., Barcza, Z.

We examine the atmospheric budget of CO2 at temperate continental sites in the Northern Hemisphere. On a monthly time scale both surface exchange and atmospheric transport are important in determining the rate of change of CO2 mixing ratio at these sites. Vertical differences between the atmospheric boundary …


Journal: Tellus Series B-Chemical and Physical Meteorology, Volume 56 (4): 301-311 (2004), ISBN . DOI: 10.3402/tellusb.v56i4.16446 Sites: CA-Man, US-Los, US-PFa, US-WCr