Search Results - "Sparks, J. P."

Rhizosphere microbiomes derived from vermicompost alter gene expression and regulatory pathways in tomato (Solanum lycopersicum, L.) by Garcia, J., Moravek, M., Fish, T., Thannhauser, T., Fei, Z., Sparks, J. P., Giovannoni, J., Kao-Kniffin, J.

“…The gut microbiome of worms from composting facilities potentially harbors organisms that are beneficial to plant growth and development. In this experiment,…”
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Predicting photosynthesis and transpiration responses to ozone: decoupling modeled photosynthesis and stomatal conductance by Lombardozzi, D, Levis, S, Bonan, G, Sparks, J. P

“…Plants exchange greenhouse gases carbon dioxide and water with the atmosphere through the processes of photosynthesis and transpiration, making them essential…”
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Disturbance and the resilience of coupled carbon and nitrogen cycling in a north temperate forest by Nave, L. E., Gough, C. M., Maurer, K. D., Bohrer, G., Hardiman, B. S., Le Moine, J., Munoz, A. B., Nadelhoffer, K. J., Sparks, J. P., Strahm, B. D., Vogel, C. S., Curtis, P. S.

“…Much of our biogeochemical understanding of forest disturbances comes from studies of severe or stand‐replacing events, which may have different impacts on…”
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Carbon sequestration in a high-elevation, subalpine forest by Monson, R. K., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Scott-Denton, L. E., Sparks, K., Huxman, T. E.

“…We studied net ecosystem CO2 exchange (NEE) dynamics in a high‐elevation, subalpine forest in Colorado, USA, over a two‐year period. Annual carbon…”
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Eddy covariance fluxes of peroxyacetyl nitrates (PANs) and NOy to a coniferous forest by Turnipseed, A. A., Huey, L. G., Nemitz, E., Stickel, R., Higgs, J., Tanner, D. J., Slusher, D. L., Sparks, J. P., Flocke, F., Guenther, A.

“…We employed a fast response thermal dissociation‐chemical ionization mass spectrometer (TD‐CIMS) system to measure eddy covariance fluxes of peroxyacetyl…”
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Temperature as a Control over Ecosystem CO₂ Fluxes in a High-Elevation, Subalpine Forest by Huxman, T. E., Turnipseed, A. A., J. P. Sparks, P. C. Harley, Monson, R. K.

“…We evaluated the hypothesis that CO₂ uptake by a subalpine, coniferous forest is limited by cool temperature during the growing season. Using the eddy…”
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Changes in soil nitrogen cycling in a northern temperate forest ecosystem during succession by Nave, L. E, Sparks, J. P, Le Moine, J, Hardiman, B. S, Nadelhoffer, K. J, Tallant, J. M, Vogel, C. S, Strahm, B. D, Curtis, P. S

“…Nitrogen (N) transformations in forest soils are fundamentally important to plant and microbial N nutrition and the N balance of forest ecosystems, but changes…”
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Modeling and measuring the effects of disturbance history and climate on carbon and water budgets in evergreen needleleaf forests by Thornton, P.E, Law, B.E, Gholz, Henry L, Clark, Kenneth L, Falge, E, Ellsworth, D.S, Goldstein, A.H, Monson, R.K, Hollinger, D, Falk, M, Chen, J, Sparks, J.P

“…The effects of disturbance history, climate, and changes in atmospheric carbon dioxide (CO 2) concentration and nitrogen deposition (N dep) on carbon and water…”
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Leaf carbon isotope discrimination and nitrogen content for riparian trees along elevational transects by Sparks, J.P, Ehleringer, J.R

“…Leaf carbon isotope discrimination (Δ), seasonal estimates of the leaf-to-air water vapor gradient on a molar basis (ω), and leaf nitrogen contents were…”
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The Influence of Chronic Ozone Exposure on Global Carbon and Water Cycles by Lombardozzi, D., Levis, Samuel, Bonan, G., Hess, P. G., Sparks, J. P.

“…Ozone (O₃) is a phytotoxic greenhouse gas that has increased more than threefold at Earth’s surface from preindustrial values. In addition to directly…”
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Gaseous fluxes of peroxyacetyl nitrate (PAN) into plant leaves by TEKLEMARIAM, T. A., SPARKS, J. P.

“…ABSTRACT Peroxyactyl nitrate (PAN) is the most abundant of the gaseous organic nitrates produced from the photochemistry of hydrocarbons and NOx (i.e. ozone…”
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Integrating O 3 influences on terrestrial processes: photosynthetic and stomatal response data available for regional and global modeling by Lombardozzi, D., Sparks, J. P., Bonan, G.

“…Plants have a strong influence on climate by controlling the transfer of carbon dioxide and water between the biosphere and atmosphere during the processes of…”
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Ammonia oxidizer populations vary with nitrogen cycling across a tropical montane mean annual temperature gradient by Pierre, S., Hewson, I., Sparks, J. P., Litton, C. M., Giardina, C., Groffman, P. M., Fahey, T. J.

“…Functional gene approaches have been used to better understand the roles of microbes in driving forest soil nitrogen (N) cycling rates and bioavailability…”
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Regulation of water loss in populations of Populus trichocarpa: the role of stomatal control in preventing xylem cavitation by Sparks, J.P, Black, R.A

“…Variations in resistance to drought-induced xylem cavitation, xylem air-entry points, stomatal behavior, and hydraulic conductivity were measured in four…”
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Integrating O3 influences on terrestrial processes: photosynthetic and stomatal response data available for regional and global modeling by Lombardozzi, D, Sparks, J P, Bonan, G

“…Plants have a strong influence on climate by controlling the transfer of carbon dioxide and water between the biosphere and atmosphere during the processes of…”
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Light-mediated 15N fractionation in Caribbean gorgonian octocorals: implications for pollution monitoring by Baker, D. M., Kim, K., Andras, J. P., Sparks, J. P.

“…The stable nitrogen isotope ratio ( δ 15 N) of coral tissue is a useful recorder of anthropogenic pollution in tropical marine ecosystems. However, little is…”
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Allergic to life: psychological factors in environmental illness by Simon, G E, Katon, W J, Sparks, P J

“…Environmental illness is an increasingly frequent and medically unexplained syndrome of "allergy" to common environmental agents. A recent outbreak of…”
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Quantitative analysis and detection of chaptalization and watering down of wine using isotope ratio mass spectrometry by Smajlovic, I., Wang, D., Túri, M., Qiding, Z., Futó, I., Veres, M., Sparks, K.L., Sparks, J.P., Jakšić, D., Vuković, A., Vujadinović, M.

“…In early 1990's European Union has established new isotopic approach for detection of wine authenticity. In this article we setup the possibility of using new…”
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Ethanol isotope method (EIM) for uncovering illegal wine by Smajlović, I., Sparks, K.L., Sparks, J.P., Čukalović, I. Leskošek, Jović, S.

“…Isotopic methods have proven to be a powerful analytical tool for the determination of origin and authenticity of wine. In addition, measuring the stable…”
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The uptake of gaseous organic nitrogen by leaves: A significant global nitrogen transfer process by Sparks, Jed P., Roberts, James M., Monson, Russell K.

“…We report measurements of the uptake of peroxyacetyl nitrate (PAN) by plant leaves at mixing ratios typical of the continental lower troposphere. PAN uptake…”
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