Search Results - "Ryan, M G"

Reconciling Carbon-Cycle Concepts, Terminology, and Methods by Chapin, F. S., Woodwell, G. M., Randerson, J. T., Rastetter, E. B., Lovett, G. M., Baldocchi, D. D., Clark, D. A., Harmon, M. E., Schimel, D. S., Valentini, R., Wirth, C., Aber, J. D., Cole, J. J., Goulden, M. L., Harden, J. W., Heimann, M., Howarth, R. W., Matson, P. A., McGuire, A. D., Melillo, J. M., Mooney, H. A., Neff, J. C., Houghton, R. A., Pace, M. L., Ryan, M. G., Running, S. W., Sala, O. E., Schlesinger, W. H., Schulze, E.-D.

“…Recent projections of climatic change have focused a great deal of scientific and public attention on patterns of carbon (C) cycling as well as its controls,…”
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A Wideband Transmitarray Using Dual-Resonant Double Square Rings by Ryan, Colan G M, Chaharmir, Mohammad Reza, Shaker, J, Bray, Joey R, Antar, Yahia M M, Ittipiboon, A

“…A four-layer transmitarray operating at 30 GHz is designed using a dual-resonant double square ring as the unit cell element. The two resonances of the double…”
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Stomatal conductance and photosynthesis vary linearly with plant hydraulic conductance in ponderosa pine by Hubbard, R. M., Ryan, M. G., Stiller, V., Sperry, J. S.

“…Recent work has shown that stomatal conductance (gs) and assimilation (A) are responsive to changes in the hydraulic conductance of the soil to leaf pathway…”
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A test of the hydraulic limitation hypothesis in fast‐growing Eucalyptus saligna by BARNARD, H. R., RYAN, M. G.

“…ABSTRACT The hydraulic limitation hypothesis proposes that (1) reduced growth in taller trees is caused by decreased photosynthesis resulting from a decrease…”
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Short- and medium-term effects of fuel reduction mulch treatments on soil nitrogen availability in Colorado conifer forests by Rhoades, C.C., Battaglia, M.A., Rocca, M.E., Ryan, M.G.

“…► Fuel reduction mulch treatments increase soil N availability in Colorado forests. ► Soil N was higher in operational-scale treatments compared to untreated…”
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Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature by Giardina, Christian P, Ryan, Michael G

“…It has been suggested that increases in temperature can accelerate the decomposition of organic carbon contained in forest mineral soil (Cs ), and, therefore,…”
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The Relationship between Tree Height and Leaf Area: Sapwood Area Ratio by N. Mc Dowell, Barnard, H., Bond, B. J., T. Hinckley, R. M. Hubbard, Ishii, H., B. Köstner, Magnani, F., Marshall, J. D., Meinzer, F. C., Phillips, N., Ryan, M. G., Whitehead, D.

“…The leaf area to sapwood area ratio ($A_{1}\colon A_{\text{s}}$) of trees has been hypothesized to decrease as trees become older and taller. Theory suggests…”
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Evaluating different soil and plant hydraulic constraints on tree function using a model and sap flow data from ponderosa pine by Williams, M., Bond, B. J., Ryan, M. G.

“…Relationships between tree size and physiological processes such as transpiration may have important implications for plant and ecosystem function, but as yet…”
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Reliance on stored water increases with tree size in three species in the Pacific Northwest by Phillips, N G, Ryan, M G, Bond, B J, McDowell, N G, Hinckley, T M, Cermák, J

“…In tall old forests, limitations to water transport may limit maximum tree height and reduce photosynthesis and carbon sequestration. We evaluated the degree…”
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Leaf Area Compounds Height-Related Hydraulic Costs of Water Transport in Oregon White Oak Trees by Phillips, N., Bond, B. J., McDowell, N. G., Ryan, M. G., Schauer, A.

“…1. The ratio of leaf to sapwood area generally decreases with tree size, presumably to moderate hydraulic costs of tree height. This study assessed…”
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Two Compact, Wideband, and Decoupled Meander-Line Antennas Based on Metamaterial Concepts by Ryan, C. G. M., Eleftheriades, G. V.

“…A two-antenna system employing wideband metamaterial-inspired meander-line antennas with a maximum separation of λ 0 /5 is presented, and a very wide measured…”
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Transpiration and Whole-Tree Conductance in Ponderosa Pine Trees of Different Heights by Ryan, Michael G., Bond, Barbara J., Law, Beverly E., Robert M. Hubbard, Woodruff, David, Emil Cienciala, Jiri Kucera

“…Changes in leaf physiology with tree age and size could alter forest growth, water yield, and carbon fluxes. We measured tree water flux (Q) for 14 ponderosa…”
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Foliage, fine-root, woody-tissue and stand respiration in Pinus radiata in relation to nitrogen status by Ryan, M.G, Hubbard, R.M, Pongracic, S, Raison, R.J, McMurtrie, R.E

“…We measured respiration of 20-year-old Pinus radiata D. Don trees growing in control (C)7 irrigated (I), and irrigated + fertilized (IL) stands in the Biology…”
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Comparing nocturnal eddy covariance measurements to estimates of ecosystem respiration made by scaling chamber measurements at six coniferous boreal sites by Lavigne, M. B., Ryan, M. G., Anderson, D. E., Baldocchi, D. D., Crill, P. M., Fitzjarrald, D. R., Goulden, M. L., Gower, S. T., Massheder, J. M., McCaughey, J. H., Rayment, M., Striegl, R. G.

“…During the growing season, nighttime ecosystem respiration emits 30–100% of the daytime net photosynthetic uptake of carbon, and therefore measurements of…”
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An investigation of hydraulic limitation and compensation in large, old Douglas-fir trees by McDowell, Nate G, Phillips, Nathan, Lunch, Claire, Bond, Barbara J, Ryan, Michael G

“…The hydraulic limitation hypothesis (Ryan and Yoder 1997) proposes that leaf-specific hydraulic conductance (kl) and stomatal conductance (gs) decline as trees…”
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The oncofetal protein, 5T4, is a suitable target for antibody-guided anti-cancer chemotherapy with calicheamicin by BOGHAERT, E. R, SRIDHARAN, L, DOUGHER, M, DIJOSEPH, J. F, DAMLE, N. K, KHANDKE, K. M, ARMELLINO, D, RYAN, M. G, MYERS, K, HARROP, R, KUNZ, A, HAMANN, P. R, MARQUETTE, K

“…The oncofetal protein, 5T4, is a tumor-associated protein displayed on the cell membrane of various carcinomas. This molecule is a promising target for…”
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Effects of Climate Change on Plant Respiration by Ryan, Michael G.

“…Plant respiration is a large, environmentally sensitive component of the ecosystem carbon balance, and net ecosystem carbon flux will change as the balance…”
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Canopy and hydraulic conductance in young, mature and old Douglas-fir trees by Phillips, Nathan, Bond, Barbara J, McDowell, Nate G, Ryan, Michael G

“…We tested for reductions in water transport with increasing tree size, a key component in determining whether gas exchange and growth are hydraulically limited…”
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Growth and maintenance respiration rates of aspen, black spruce and jack pine stems at northern and southern BOREAS sites by Lavigne, M.B, Ryan, M.G

“…We measured stem respiration rates during and after the 1994 growing season of three common boreal tree species at sites near the northern and southern…”
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Tree age, disturbance history, and carbon stocks and fluxes in subalpine Rocky Mountain forests by Bradford, J.B, Birdsey, R.A, Joyce, L.A, Ryan, M.G

“…Forest carbon stocks and fluxes vary with forest age, and relationships with forest age are often used to estimate fluxes for regional or national carbon…”
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