Completed Projects
PI's: David Bryan Dail, University of Maine, Orono, Maine
Eric A. Davidson, Woods Hole Research Center, Falmouth, MA
Project Title: "Long-term CO2 exchange and biomass measurements in a spruce-hemlock stand near Howland, Maine, supporting regional-scale studies and ecosystem manipulation experiments"
Davidson, E.A., A.D. Richardson, K.E. Savage, and D.Y. Hollinger. 2006. A distinct seasonal pattern of the ratio of soil respiration to total ecosystem respiration in a spruce-dominated temperate forest. Global Change Biology 12:230-239.
Davidson, E.A., I. Janssens, and Y. Luo. 2006. On the variability of respiration in terrestrial ecosystems: moving beyond Q10. Global Change Biology 12:154-164.
Gaige E., Dail, D.B., Hollinger D.Y., Davidson, E.A., Lee, J.T., Fernandez, I.F., SIevering, H., Rodrigues, C. Hughes, H., White, A. and Halteman, W. 2007. Changes in canopy processes following whole-forest canopy nitrogen fertilization of a mature spruce-hemlock forest. Ecosystems. DOI 10.1007/s10021-007-9081-4. http://www.springerlink.com/content/v7707g863101142g/
PI's: David R. Foster, Harvard University, Harvard Forest, Petersham, MA
Julian L. Hadley, Harvard University, Harvard Forest, Petersham, MA
Project Title: "Effects of forest age, soil drainage and interannual climate variation on deciduous forest carbon exchange: A comparison to long-term Harvard Forest measurements, in a contrasting forest type"
The following paper which includes data from NIGEC and NICCR-funded research at the Little Prospect Hill site, and will acknowledge NIGEC and NICCR support, has been accepted in final form, and is scheduled for publication in Tree Physiology in March 2008:
Hadley, J. L., P.S. Kuzeja, M.J. Daley, N.G. Phillips, S. Singh and T. Mulcahy. 2008. Water use and carbon exchange of eastern hemlock (Tsuga canadensis L.) and deciduous forests in the northeastern U.S.
PI: Xuhui Lee, Yale University, Connecticut
Project Title: "Response of Soil Respiration to Rain"
Lee X., W. Massman, B. Law. 2004, 'Handbook of Micrometeorology: A Guide for Surface Flux Measurement and Analysis'. Kluwer Academic Publishers, Dordrecht.
Lee, X., J. Finnigan, K.T. Paul U. 2004, 'Coordinate systems and flux bias error', in Handbook of Micrometeorology: A Guide for Surface Flux Measurement and Analysis (X. Lee, W. Massman, B. Law eds.), Kluwer Academic Publishers, 33-66.
Lee, X., H.-J. Wu, J. Sigler, C. Oishi, T. Siccama. 2004, 'Rapid and transient response of soil respiration to rain', Global Change Biology, 10:1017:1026.
Wu, H.-J. Ph.D. thesis title: 'Short-Term Response of Soil Respiration to Rain Events in Temperate Forests and Agricultural Fields' (in preparation), Yale University.
PI: Paul R. Moorcroft, Harvard University, Cambridge, MA
Project Title: "Past, present & future rates of terrestrial CO2 flux in North-Eastern Forests: the role of ecophysiological responses, land-use history & disturbance legacies"
Albani, M., G.C. Hurtt & P.R. Moorcroft. 2006. The contributions of land-use change, CO2 fertilization and climate variability to the carbon sink in the Eastern United States. Global Change Biology 12:2370-2390.
Desai, A.R., P.R. Moorcroft, P.V. Bolstad, and K.J. Davis. 2007. Regional carbon fluxes from an observationally constrained dynamic ecosystem model: Impacts of disturbance, CO2 fertilization, and heterogeneous land cover, J. Geophys. Res. 112, G01017, doi: 10.1029/2006JG000264.
Moorcroft, P.R. 2006. (Invited Feature). How close are we to a predictive science of the biosphere? Trends in Ecol. & Evol. 21:400-407.
PI's: Ruth K. Varner, University of New Hampshire, Durham, NH
Patrick M. Crill, Stockholm University, Sweden
Project Title: "High Frequency Measurements of CO2 Efflux from Forest Soil"
Philips, S., R.K. Varner, S. Frolking, J.W. Munger, P.M. Crill, S. Wofsy and J. Bubier. submitted October 2007.
Seasonal variation in soil respiration measured by autochambers along a moisture gradient at Harvard Forest. J. Geophy. Res. Biogeosciences.
Varner, R.K., S. Phillips, S. Frolking, P.M. Crill. In preparation. Diurnal temperature hysteresis of soil CO2 efflux. Geophysical Research Letters.
Ongoing Projects
PI's: Christine L. Goodale, Cornell University, Ithaca NY
Scott C. Ollinger, University of New Hampshire, Durham NH
Project Title: "Effects of Future Changes in Climate and Atmospheric Composition on Forest Ecosystems across the Northeastern U.S.: Model Development, Testing, and Projections"
Ollinger, S.V., C.L. Goodale, K. Hayhoe and J.P. Jenkins. In Press. 'Potential Effects of Climate Change and Rising CO2 on Ecosystem Processes in Northeaster U.S. Forests'. Mitigation and Adaptation Strategies for Global Change.
PI's: Xuhui Lee, Yale University, Connecticut
Edward Patton, National Center for Atmospheric Research, Colorado
Project Title: "Influence of Boundary Layer Flow on Vegetation-Air Exchanges of Energy, Water and Carbon Dioxide"
Huang J, Lee X., E.G. Patton. 2007, 'A modelling study of flux imbalance and the influence of entrainment in the convective boundary layer', Boundary-Layer Meteorology, submitted. (preprint available at: http://pantheon.yale.edu/~zhlee/huang1.pdf)
