Zobrazeno 1 - 10
of 26
pro vyhledávání: '"J. E. Richey"'
Autor:
J.-H. Park, O. K. Nayna, M. S. Begum, E. Chea, J. Hartmann, R. G. Keil, S. Kumar, X. Lu, L. Ran, J. E. Richey, V. V. S. S. Sarma, S. M. Tareq, D. T. Xuan, R. Yu
Publikováno v:
Biogeosciences, Vol 15, Pp 3049-3069 (2018)
Human activities are drastically altering water and material flows in river systems across Asia. These anthropogenic perturbations have rarely been linked to the carbon (C) fluxes of Asian rivers that may account for up to 40–50 % of the global
Externí odkaz:
https://doaj.org/article/1fc84a53282b4b3eaa4ff07c42b22fa7
Publikováno v:
Biogeosciences, Vol 12, Iss 4, Pp 921-932 (2015)
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 riverine CO2 partial pressure (pCO2). By determining the pCO2 from alkalinity and pH, we inves
Externí odkaz:
https://doaj.org/article/c4eca1b4d4824bfca19aecb8f0297eb3
Publikováno v:
Acta Amazonica, Vol 10, Iss 4, Pp 823-834 (1980)
Resumo Estudos planctônicos e químicos efetuados durante um cruzeiro sinótico do Amazonas, em maio-junho de 1977, indicam que substâncias inorgânicas e orgânicas de origem terrestre podem influenciar a atividade microbiana no canal principal, t
Externí odkaz:
https://doaj.org/article/cc3955c6cd9b472baf37300d392d91f9
Autor:
W. T. Harry, J. E. Richey
Publikováno v:
Geological Journal. 3:254-268
Doubt is cast on the general assumption that individual plutonic units were each emplaced in one intrusive act. Lack of internal contacts does not prove this assumption. It is suggested that all plutonic units may well have been intruded as a series
Autor:
Yosio Shimabukoro, J E Richey, Miles G. Logsdon, Milton O. Smith, Victoria M. Ballester, Robin J. Weeks
Publikováno v:
Earth Interactions. 9:1-16
In the Amazon basin, seasonal and interannual spectral changes measured by satellites result from anthropogenic disturbance and from the interaction between climate variation and the surface cover. Measurements of spectral change, and the characteriz
Autor:
Eraldo Aparecido Trondoli Matricardi, R. Coburn, J E Richey, Emilio Mayorga, Reynaldo Luiz Victoria, Alex V. Krusche, D. de C. Victoria, Maria Victoria Ramos Ballester, Miles G. Logsdon
Publikováno v:
Remote Sensing of Environment. 87:429-445
Amazonia is one of the most important ecosystems of the planet, containing the largest extent of contiguous tropical rain forest on earth, over 5 million square kilometers. While most of the region remains forested, rapid development has led, over th
Publikováno v:
Limnology and Oceanography. 46:1921-1935
A consistent observation of river waters in the Amazon Basin and elsewhere is that suspended fine particulate organic matter (FPOM) is compositionally distinct from coexisting dissolved organic matter (DOM). The present article presents experimental
Autor:
Giampaolo Queiroz Pellegrino, R. M. B. Almeida, Alex V. Krusche, Luiz Antonio Martinelli, Jorge Marcos de Moraes, Maria Victoria Ramos Ballester, J E Richey, Reynaldo Luiz Victoria
Publikováno v:
Journal of Climate. 11:1105-1110
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. The data were converted into temperature anomalies, as the differences between annual mean t
15N natural abundance in plants of the Amazon River floodplain and potential atmospheric N2 fixation
Autor:
Luiz Antonio Martinelli, Allan H. Devol, P. C. O. Trivelin, J E Richey, Reynaldo Luiz Victoria
Publikováno v:
Oecologia. 90:591-596
The15N natural abundance values of various Amazon floodplain (varzea) plants was investigated. Samples of young leaf tissues were collected during three different periods of the river hydrography (low water, mid rising water and high water) and durin