Search Results - "Richey, J. E."

Long-term spatial and temporal variation of CO2 partial pressure in the Yellow River, China by Ran, L, Lu, X X, Richey, J E, Sun, H, Han, J, Yu, R, Liao, S, Yi, Q

“…Carbon transport in river systems is an important component of the global carbon cycle. Most rivers of the world act as atmospheric CO2 sources due to high…”
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Spatial and temporal variability of turbidity, dissolved oxygen, conductivity, temperature, and fluorescence in the lower Mekong River–Tonle Sap system identified using continuous monitoring by Irvine, K. N, Richey, J. E, Holtgrieve, G. W, Sarkkula, J, Sampson, M

“…Continuous monitoring of turbidity, dissolved oxygen (DO), conductivity, temperature, and fluorescence was done at five locations on the Tonle Sap Lake and the…”
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A remote sensing/GIS-based physical template to understand the biogeochemistry of the Ji-Paraná river basin (Western Amazônia) by Ballester, M.V.R, Victoria, D.de C, Krusche, A.V, Coburn, R, Victoria, R.L, Richey, J.E, Logsdon, M.G, Mayorga, E, Matricardi, E

“…Amazônia is one of the most important ecosystems of the planet, containing the largest extent of contiguous tropical rain forest on earth, over 5 million…”
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The use of spaceborne radar data to model inundation patterns and trace gas emissions in the central Amazon floodplain by Rosenqvist, Å., Forsberg, B. R., Pimentel, T., Rauste, Y. A., Richey, J. E.

“…River floodplains are the dominant wetland habitat in the Amazon river basin, providing important habitation for aquatic flora and fauna, and playing a key…”
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Outgassing from Amazonian rivers and wetlands as a large tropical source of atmospheric CO2 by RICHEY, Jeffrey E, MELACK, John M, AUFDENKAMPE, Anthony K, BALLESTER, Victoria M, HESS, Laura L

“…Terrestrial ecosystems in the humid tropics play a potentially important but presently ambiguous role in the global carbon cycle. Whereas global estimates of…”
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Long-term spatial and temporal variation of CO 2 partial pressure in the Yellow River, China by Ran, L., Lu, X. X., Richey, J. E., Sun, H., Han, J., Yu, R., Liao, S., Yi, Q.

“…Carbon transport in river systems is an important component of the global carbon cycle. Most rivers of the world act as atmospheric CO2 sources due to high…”
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Groundwater Nitrogen Dynamics at the Terrestrial-Lotic Interface of a Small Catchment in the Central Amazon Basin by McClain, Michael E., Richey, Jeffrey E., Pimentel, Tania Pena

“…Processes operating at the terrestrial-lotic interface may significantly alter dissolved nitrogen concentrations in groundwater as a result of shifting redox…”
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The 18O:16O of dissolved oxygen in rivers and lakes in the Amazon Basin: Determining the ratio of respiration to photosynthesis rates in freshwaters by Quay, P. D., Wilbur, D. 0., Richey, J. E., Devol, A. H., Benner, R., Forsberg, B. R.

“…The concentration and 18O:16O ratio of dissolved oxygen were measured for 23 rivers and lakes of the Amazon Basin during 1988, 1990, and 1991. With only two…”
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Surface Air Temperature Variations in the Amazon Region and Its Borders during This Century by Victoria, R. L., Martinelli, L. A., Moraes, J. M., Ballester, M. V., Krusche, A. V., Pellegrino, G., Almeida, R. M. B., Richey, J. E.

“…Monthly average surface air temperature records from 17 stations in the Brazilian Amazon from 1913 to 1995 were used to compute annual air temperature means…”
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Estimating cell-to-cell land surface drainage paths from digital channel networks, with an application to the Amazon basin by Mayorga, Emilio, Logsdon, Miles G., Ballester, Maria Victoria R., Richey, Jeffrey E.

“…Cell-to-cell surface flow paths are commonly derived from gridded digital elevation models (DEM) by choosing the direction of steepest descent to one of the…”
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Origins and Processing of Organic Matter in the Amazon River as Indicated by Carbohydrates and Amino Acids by Hedges, John I., Cowie, Gregory L., Richey, Jeffrey E., Quay, Paul D., Benner, Ronald, Strom, Mike, Forsberg, Bruce R.

“…Aldose, amino acid, and elemental compositions were determined for flux-weighted samples of coarse $(>63 \mu m)$ and fine $(<63 \mu m)$ particulate organic…”
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Bacterial Carbon Metabolism in the Amazon River System by Benner, Ronald, Opsahl, Stephen, Chin-Leo, Gerardo, Richey, Jeffrey E., Forsberg, Bruce R.

“…Bacterial abundance and production and community respiration were measured at several mainstem and tributary stations in November-December 1988, April-May…”
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15N natural abundance in plants of the Amazon River floodplain and potential atmospheric N2 fixation by Martinelli, L.A, Victoria, R.L, Trivelin, P.C.O, Devol, A.H, Richey, J.E

“…The15N natural abundance values of various Amazon floodplain (várzea) plants was investigated. Samples of young leaf tissues were collected during three…”
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Dissolved organic matter and terrestrial-lotic linkages in the Central Amazon Basin of Brazil by McClain, Michael E., Richey, Jeffrey E., Brandes, Jay A., Pimentel, Tania P.

“…We evaluate the hypothesis that decomposition and adsorption reactions operating in upland soils of headwater catchments control the concentration and…”
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Nitrogen yields from undisturbed watersheds in the Americas by Lewis, W.M. Jr, Melack, J.M, McDowell, W.H, McClain, M, Richey, J.E

“…Yields of total fixed nitrogen and nitrogen fractions are summarized for thirty-one watersheds in which anthropogenic disturbance of the nitrogen cycle, either…”
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Amazon River Discharge and Climate Variability: 1903 to 1985 by Richey, Jeffrey E., Nobre, Carlos, Deser, Clara

“…Reconstruction of an 83-year record (1903 to 1985) of the discharge of the Amazon River shows that there has been no statistically significant change in…”
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Reviews and syntheses: Anthropogenic perturbations to carbon fluxes in Asian river systems – concepts, emerging trends, and research challenges by Park, Ji-Hyung, Nayna, Omme K, Begum, Most S, Chea, Eliyan, Hartmann, Jens, Keil, Richard G, Kumar, Sanjeev, Lu, Xixi, Ran, Lishan, Richey, Jeffrey E, Sarma, Vedula V. S. S, Tareq, Shafi M, Xuan, Do Thi, Yu, Ruihong

“…Human activities are drastically altering water and material flows in river systems across Asia. These anthropogenic perturbations have rarely been linked to…”
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Plankton metabolism and carbon processes in the Amazon River, its tributaries, and floodplain waters, Peru-Brazil, May-June 1977 [Phytoplankton] by Wissmar, R. C., Richey, J. E., Stallard, R. F., Edmond, J. M.

“…A synoptic study of photosynthetic and respiratory activity of plankton communities in different Amazon surface waters indicates that large-scale events such…”
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Biogeochemistry of Carbon in the Amazon River by Richey, Jeffrey E., Hedges, John I., Devol, Allan H., Quay, Paul D., Victoria, Reynaldo, Martinelli, Luiz, Forsberg, Bruce R.

“…Depth-integrated, discharge-weighted water samples were collected over 1,800 km of the Amazon River on eight cruises at different stages of the hydrograph,…”
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Compositions and Fluxes of Particulate Organic Material in the Amazon River by Hedges, John I., Clark, Wayne A., Quay, Paul D., Richey, Jeffrey E., Devol, Allan H., Umberto de M. Santos

“…Lignin, elemental, and stable carbon isotope compositions are reported for local plants and for coarse $(> 63 \mu m)$ and fine $(< 63 \mu m)$ suspended…”
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