Search Results - "CHAMBERS, J. Q."

Tree allometry and improved estimation of carbon stocks and balance in tropical forests by Chave, J, Andalo, C, Brown, S, Cairns, M.A, Chambers, J.Q, Eamus, D, Folster, H, Fromard, F, Higuchi, N, Kira, T

“…Tropical forests hold large stores of carbon, yet uncertainty remains regarding their quantitative contribution to the global carbon cycle. One approach to…”
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Controls on terrestrial carbon feedbacks by productivity versus turnover in the CMIP5 Earth System Models by Koven, C. D, Chambers, J. Q, Georgiou, K, Knox, R, Negron-Juarez, R, Riley, W. J, Arora, V. K, Brovkin, V, Friedlingstein, P, Jones, C. D

“…To better understand sources of uncertainty in projections of terrestrial carbon cycle feedbacks, we present an approach to separate the controls on modeled…”
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Forest response to increased disturbance in the central Amazon and comparison to western Amazonian forests by Holm, J. A, Chambers, J. Q, Collins, W. D, Higuchi, N

“…Uncertainties surrounding vegetation response to increased disturbance rates associated with climate change remains a major global change issue for Amazonian…”
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Internal respiration of Amazon tree stems greatly exceeds external CO2 efflux by Angert, A, Muhr, J, Juarez, R Negron, Muñoz, W Alegria, Kraemer, G, Santillan, J Ramirez, Barkan, E, Mazeh, S, Chambers, J Q, Trumbore, S E

“…Respiration in tree stems is an important component of forest carbon balance. The rate of CO2 efflux from the stem has often been assumed to be a measure of…”
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Decomposition and carbon cycling of dead trees in tropical forests of the central Amazon by Chambers, J.Q, Higuchi, N, Schimel, J.P, Ferreira, L.V, Melack, J.M

“…Decomposition rate constants were measured for boles of 155 large dead trees (> 10 cm diameter) in central Amazon forests. Mortality data from 21 ha of…”
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The impacts of tropical cyclones on the net carbon balance of eastern US forests (1851-2000) by Fisk, J P, Hurtt, G C, Chambers, J Q, Zeng, H, Dolan, K A, Negrón-Juárez, R I

“…In temperate forests of the eastern US, tropical cyclones are a principal agent of catastrophic wind damage, with dramatic impacts on the structure and…”
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The contribution of respiration in tree stems to the Dole Effect by Angert, A, Muhr, J, Negron Juarez, R, Alegria Muñoz, W, Kraemer, G, Ramirez Santillan, J, Chambers, J. Q, Trumbore, S. E

“…Understanding the variability and the current value of the Dole Effect, which has been used to infer past changes in biospheric productivity, requires accurate…”
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Forest disturbance and recovery: A general review in the context of spaceborne remote sensing of impacts on aboveground biomass and canopy structure by Frolking, S., Palace, M. W., Clark, D. B., Chambers, J. Q., Shugart, H. H., Hurtt, G. C.

“…Abrupt forest disturbances generating gaps >0.001 km2 impact roughly 0.4–0.7 million km2 a−1. Fire, windstorms, logging, and shifting cultivation are dominant…”
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Relationship between soils and Amazon forest biomass: a landscape-scale study by Laurance, William F, Fearnside, Philip M, Laurance, Susan G, Delamonica, Patricia, Lovejoy, Thomas E, Rankin-de Merona, Judy M, Chambers, Jeffrey Q, Gascon, Claude

“…Above-ground dry biomass of living trees including palms was estimated in 65 1ha plots spanning a 1000km2 landscape in central Amazonia. The study area was…”
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Highly reactive light-dependent monoterpenes in the Amazon by Jardine, A. B., Jardine, K. J., Fuentes, J. D., Martin, S. T., Martins, G., Durgante, F., Carneiro, V., Higuchi, N., Manzi, A. O., Chambers, J. Q.

“…Despite orders of magnitude difference in atmospheric reactivity and great diversity in biological functioning, little is known about monoterpene speciation in…”
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Mechanical vulnerability and resistance to snapping and uprooting for Central Amazon tree species by Ribeiro, G.H.P.M., Chambers, J.Q., Peterson, C.J., Trumbore, S.E., Magnabosco Marra, D., Wirth, C., Cannon, J.B., Négron-Juárez, R.I., Lima, A.J.N., de Paula, E.V.C.M., Santos, J., Higuchi, N.

“…•Novel approach used to understand risks of Amazonian trees to wind-throw.•Approach allowed comparison of critical turning moments across different…”
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Parameter estimation for a global model of terrestrial biogeochemical cycling by an iterative method by Kercher, J.R, Chambers, J.Q

“…We have implemented a geographically distributed ecosystem model TERRA for the carbon, nitrogen, and water dynamics of the global terrestrial biosphere. The…”
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Measuring Net Primary Production in Forests: Concepts and Field Methods by Clark, Deborah A., Brown, Sandra, Kicklighter, David W., Chambers, Jeffrey Q., Thomlinson, John R., Ni, Jian

“…There are pressing reasons for developing a better understanding of net primary production (NPP) in the world's forests. These ecosystems play a large role in…”
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Respiration from a tropical forest ecosystem: partitioning of sources and low carbon use efficiency by Chambers, J.Q, Tribuzy, E.S, Toledo, L.C, Crispim, B.F, Higuchi, N, Santos, J. dos, Araújo, C, Kruijt, B, Nobre, A.D, Trumbore, S.E

“…Understanding how tropical forest carbon balance will respond to global change requires knowledge of individual heterotrophic and autotrophic respiratory…”
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Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest by Chambers, Jeffrey Q, Santos, Joaquim dos, Ribeiro, Ralfh J, Higuchi, Niro

“…The loss of tree mass over time from damage can lead to underestimates in above-ground net primary productivity (ANPP) if not accounted for properly. Bias in…”
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Determination of Oxide in Fluoride Salts Using an Yttria-Stabilized-Zirconia Oxygen Pump by Eklund, Sven E, Toth, L. M, Chambers, J. Q, Mamantov, Gleb

“…An improved method over a previous technique has been developed to determine the ppm oxide concentration of fluoride salts. The oxide is released as oxygen gas…”
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Forest Structure and Carbon Dynamics in Amazonian Tropical Rain Forests by Vieira, Simone, de Camargo, Plinio Barbosa, Selhorst, Diogo, da Silva, Roseana, Hutyra, Lucy, Chambers, Jeffrey Q., Brown, I. Foster, Higuchi, Niro, Santos, Joaquim dos, Wofsy, Steven C., Trumbore, Susan E., Martinelli, Luiz Antonio

“…Living trees constitute one of the major stocks of carbon in tropical forests. A better understanding of variations in the dynamics and structure of tropical…”
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Tungsten Fluorides:  Syntheses and Electrochemical Characterization in the FLINAK Molten Salt Eutectic by Eklund, Sven E, Chambers, James Q, Mamantov, Gleb, Diminnie, Jon, Barnes, Craig E

“…The following tungsten fluorides have been synthesized by simple addition reactions or by reduction with tungsten metal at elevated temperature:  KWF7, K2WF8,…”
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Dynamic Electrochemistry: Methodology and Application by Ryan, Michael D, Bowden, Edmond F, Chambers, James Q

“…Literature published between Dec 1991 and Nov 1993 pertaining to electroanalytical chemistry is discussed. The focus is on fundamental advances and practical…”
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Chronoamperometry of Surface-Confined Redox Couples for Irreversible Two-Step and Three-Step Consecutive Reaction Mechanisms by Kertesz, Vilmos, Chambers, James Q, Mullenix, Adam N

“…Chronoamperometry has been widely employed to determine kinetic rate constants for electron-transfer reactions of surface-confined redox couples. When the…”
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