Publications

Publications Found: 1437

Seasonal Changes In Camera-Based Indices From An Open Canopy Black Spruce Forest In Alaska, And Comparison With Indices From A Closed Canopy Evergreen Coniferous Forest In Japan
Nagai, S., Nakai, T., Saitoh, T. M., Busey, R. C., Kobayashi, H., Suzuki, R., Muraoka, H., Kim, Y.

Evaluation of the carbon, water, and energy balances in evergreen coniferous forests requires accurate in situ and satellite data regarding their spatio-temporal dynamics. Daily digital camera images can be used to determine the relationships among phenology, gross primary productivity (GPP), and meteorological parameters, and to …


Journal: Polar Science, Volume 7 (2): 125-135 (2013). DOI: 10.1016/j.polar.2012.12.001 Sites: US-Prr

Biological And Physical Influences On Soil 14CO2 Seasonal Dynamics In A Temperate Hardwood Forest
Phillips, C., McFarlane, K.J., Risk, D., Desai, A.R.

While radiocarbon (14C) abundances in standing stocks of soil carbon have been used to evaluate rates of soil carbon turnover on timescales of several years to centuries, soil-respired 14CO2 measurements are an important tool for identifying more immediate responses to disturbance and climate change. …


Journal: Biogeosciences, Volume 10 (12): 7999-8012 (2013). DOI: 10.5194/bg-10-7999-2013 Sites: US-WCr

Multivariate Conditional Granger Causality Analysis For Lagged Response Of Soil Respiration In A Temperate Forest
Detto, M., Bohrer, G., Nietz, J., Maurer, K., Vogel, C., Gough, C., Curtis, P.


Journal: Entropy, Volume 15 (12): 4266-4284 (2013). DOI: 10.3390/e15104266 Sites: US-UMB, US-UMd

Characteristics Of Evapotranspiration From A Permafrost Black Spruce Forest In Interior Alaska
Nakai, T., Kim, Y., Busey, R. C., Suzuki, R., Nagai, S., Kobayashi, H., Park, H., Sugiura, K., Ito, A.

Here, the year 2011 characteristics of evapotranspiration and the energy budget of a black spruce forest underlain by permafrost in interior Alaska were explored. Energy balance was nearly closed during summer, and the mean value of the daily energy balance ratio (the ratio of turbulent energy fluxes to available energy) from June …


Journal: Polar Science, Volume 7 (2): 136-148 (2013). DOI: 10.1016/j.polar.2013.03.003 Sites: US-Prr

Net Co2 Exchange And Carbon Budgets Of A Three-Year Crop Rotation Following Conversion Of Perennial Lands To Annual Cropping In Manitoba, Canada
Taylor, A. M., Amiro, B. D., Fraser, T. J.

Eddy covariance flux towers were used to measure net ecosystem production over three adjacent agricultural fields in Manitoba, Canada, from 2009 to 2011. Two fields were converted from long-term perennial hay/pasture to annual cropping, while the third field served as a control field that was maintained as hay/pasture. One converted …


Journal: Agricultural And Forest Meteorology, Volume 182-183: 67-75 (2013). DOI: 10.1016/j.agrformet.2013.07.008 Sites: CA-MA1, CA-MA2, CA-MA3

Landscape And Environmental Controls Over Leaf And Ecosystem Carbon Dioxide Fluxes Under Woody Plant Expansion
Barron-Gafford, G. A., Scott, R. L., Jenerette, G. D., Hamerlynck, E. P., Huxman, T. E.
  1. Many regions of the globe are experiencing a simultaneous change in the dominant plant functional type and regional climatology. We explored how atmospheric temperature and precipitation control leaf- and ecosystem-scale carbon fluxes within a pair of semi-arid …

    Journal: Journal Of Ecology, Volume 101 (6): 1471-1483 (2013). DOI: 10.1111/1365-2745.12161 Sites: US-SRM

Moisture Drives Surface Decomposition In Thawing Tundra
Hicks Pries, C. E., Schuur, E. A., Vogel, J. G., Natali, S. M.

Permafrost thaw can affect decomposition rates by changing environmental conditions and litter quality. As permafrost thaws, soils warm and thermokarst (ground subsidence) features form, causing some areas to become wetter while other areas become drier. We used a common substrate to measure how permafrost thaw affects decomposition …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 118 (3): 1133-1143 (2013). DOI: 10.1002/jgrg.20089 Sites: US-EML

A Data-Driven Analysis Of Energy Balance Closure Across FLUXNET Research Sites: The Role Of Landscape Scale Heterogeneity
Stoy, P. C., Mauder, M., Foken, T., Marcolla, B., Boegh, E., Ibrom, A., Arain, M. A., Arneth, A., Aurela, M., Bernhofer, C., Cescatti, A., Dellwik, E., Duce, P., Gianelle, D., van Gorsel, E., Kiely, G., Knohl, A., Margolis, H., McCaughey, H., Merbold, L., Montagnani, L., Papale, D., Reichstein, M., Saunders, M., Serrano-Ortiz, P., Sottocornola, M., Spano, D., Vaccari, F., Varlagin, A.

The energy balance at most surface-atmosphere flux research sites remains unclosed. The mechanisms underlying the discrepancy between measured energy inputs and outputs across the global FLUXNET tower network are still under debate. Recent reviews have identified …


Journal: Agricultural And Forest Meteorology, Volume 171-172: 137-152 (2013). DOI: 10.1016/j.agrformet.2012.11.004 Sites: BR-Ma2

Extreme Late-Summer Drought Causes Neutral Annual Carbon Balance In Southwestern Ponderosa Pine Forests And Grasslands
Kolb, T., Dore, S., Montes-Helu, M.

We assessed the impacts of extreme late-summer drought on carbon balance in a semi-arid forest region in Arizona. To understand drought impacts over extremes of forest cover, we measured net ecosystem production (NEP), gross primary production (GPP), and total ecosystem respiration (TER) with eddy covariance over five years (2006–10) …


Journal: Environmental Research Letters, Volume 8 (1): n/a-n/a (2013). DOI: 10.1088/1748-9326/8/1/015015 Sites: US-Fuf, US-Fwf

Tropospheric Ozone Reduces Carbon Assimilation In Trees: Estimates From Analysis Of Continuous Flux Measurements
Fares, S., Vargas, R., Detto, M., Goldstein, A. H., Karlik, J., Paoletti, E., Vitale, M.


Journal: Global Change Biology, Volume 19 (8): 2427-2443 (2013). DOI: 10.1111/gcb.12222 Sites: US-Blo, US-Lin