Publications

Publications Found: 1445

Five Years Of Carbon Fluxes And Inherent Water-Use Efficiency At Two Semi-Arid Pine Forests With Different Disturbance Histories
Vickers, D., Thomas, C., Pettijohn, C., Martin, J.G., Law, B.E.

Five years of eddy-covariance and other measurements at a mature ponderosa pine forest and a nearby young plantation are used to contrast the carbon fluxes for long-term averages, seasonal patterns, diel patterns and interannual variability, and to examine …


Journal: Tellus Series B-Chemical and Physical Meteorology, Volume 64 (0): 17159-n/a (2012). DOI: 10.3402/tellusb.v64i0.17159 Sites: US-Me2

CO2 Fluxes Of A Boreal Black Spruce Chronosequence In Eastern North America
Payeur-Poirier, J., Coursolle, C., Margolis, H. A., Giasson, M.

Forest harvest and subsequent stand development can have major effects on the carbon cycle of boreal stands. Carbon dioxide (CO2) fluxes of a three-point black spruce harvest chronosequence located in the boreal forest of eastern North America were measured over a one-year period at the ecosystem scale with the eddy covariance …


Journal: Agricultural And Forest Meteorology, Volume 153: 94-105 (2012). DOI: 10.1016/j.agrformet.2011.07.009 Sites: CA-Qcu

Upscaling Of CO2 Fluxes From Heterogeneous Tundra Plant Communities In Arctic Alaska
Kade, A., Bret-Harte, M. S., Euskirchen, E. S., Edgar, C., Fulweber, R. A.

We characterized the tundra vegetation at three eddy covariance towers located along a toposequence in northern Alaska and studied seasonal variations in plot-level CO2 fluxes among the dominant vegetation types with chambers during the summer and with the gradient-diffusion technique during the winter. We performed footprint …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G4): n/a-n/a (2012). DOI: 10.1029/2012JG002065 Sites: US-ICh, US-ICs, US-ICt

Seven-Year Trends Of CO2 Exchange In A Tundra Ecosystem Affected By Long-Term Permafrost Thaw
Trucco, C., Schuur, E. A., Natali, S. M., Belshe, E. F., Bracho, R., Vogel, J.

Arctic warming has led to permafrost degradation and ground subsidence, created as a result of ground ice melting. Frozen soil organic matter that thaws can increase carbon (C) emissions to the atmosphere, but this can be offset in part by increases in plant growth. The balance of plant and microbial processes, and how this balance …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G2): n/a-n/a (2012). DOI: 10.1029/2011jg001907 Sites: US-EML

Effects Of Water Availability On Carbon And Water Exchange In A Young Ponderosa Pine Forest: Above- And Belowground Responses
Ruehr, N. K., Martin, J. G., Law, B. E.

Changes in the hydrological cycle, as predicted and currently observed, are expected to significantly impact the water and carbon balance of water-limited forest ecosystems. However, differences in the water-sensitivity of component processes make carbon balance predictions challenging. To examine responses of ecosystem components …


Journal: Agricultural And Forest Meteorology, Volume 164: 136-148 (2012). DOI: 10.1016/j.agrformet.2012.05.015 Sites: US-Me6

Creating Wetlands: Primary Succession, Water Quality Changes, And Self-Design Over 15 Years
Mitsch, W. J., Zhang, L., Stefanik, K. C., Nahlik, A. M., Anderson, C. J., Bernal, B., Hernandez, M., Song, K.
The succession of vegetation, soil development, water quality changes, and carbon and nitrogen dynamics are summarized in this article for a pair of 1-hectare flow-through-created riverine wetlands for their first 15 years. Wetland plant richness increased from 13 originally planted species to 116 species …


Journal: Bioscience, Volume 62 (3): 237-250 (2012). DOI: 10.1525/bio.2012.62.3.5 Sites: US-ORv

Effects Of Invasive Insects And Fire On Forest Energy Exchange And Evapotranspiration In The New Jersey Pinelands
Clark, K. L., Skowronski, N., Gallagher, M., Renninger, H., Schäfer, K.

We used eddy covariance and meteorological measurements to quantify energy exchange and evapotranspiration (Et) in three representative upland forest stands in the New Jersey Pinelands that were either defoliated by gypsy moth (Lymantria dispar L.) or burned …


Journal: Agricultural And Forest Meteorology, Volume 166-167: 50-61 (2012). DOI: 10.1016/j.agrformet.2012.07.007 Sites: US-Ced, US-Slt

Carbon Dioxide Exchange Over Multiple Temporal Scales In An Arid Shrub Ecosystem Near La Paz, Baja California Sur, Mexico
Bell, T. W., Menzer, O., Troyo-Diéquez, E., Oechel, W. C.

Arid environments represent 30% of the global terrestrial surface, but are largely under-represented in studies of ecosystem carbon flux. Less than 2% of all FLUXNET eddy covariance sites exist in a hot desert climate. Long-term datasets of these regions are vital for capturing the seasonal and interannual variability that occur …


Journal: Global Change Biology, Volume 18 (8): 2570-2582 (2012). DOI: 10.1111/j.1365-2486.2012.02720.x Sites: MX-Lpa

Incorporating Spatial Heterogeneity Created By Permafrost Thaw Into A Landscape Carbon Estimate
Belshe, E. F., Schuur, E. A., Bolker, B. M., Bracho, R.

The future carbon balance of high-latitude ecosystems is dependent on the sensitivity of biological processes (photosynthesis and respiration) to the physical changes occurring with permafrost thaw. Predicting C exchange in these ecosystems is difficult because the thawing of permafrost is a heterogeneous process that creates a complex …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G1): n/a-n/a (2012). DOI: 10.1029/2011jg001836 Sites: US-EML

Seasonal Patterns Of Carbon Dioxide And Water Fluxes In Three Representative Tundra Ecosystems In Northern Alaska
Euskirchen, E. S., Bret-Harte, M. S., Scott, G. J., Edgar, C., Shaver, G. R.

Understanding the carbon dioxide and water fluxes in the Arctic is essential for accurate assessment and prediction of the responses of these ecosystems to climate change. In the Arctic, there have been relatively few studies of net CO2, water, and energy exchange using micrometeorological methods due to the difficulty …


Journal: Ecosphere, Volume 3 (1): 1-19 (2012). DOI: 10.1890/ES11-00202.1 Sites: US-ICh, US-ICs, US-ICt