Results 21 to 30 of about 155,598 (201)

Investigation of nitrogen and phosphorus contents in water in the tributaries of Danjiangkou Reservoir [PDF]

Royal Society Open Science, 2018
As part of the efforts to ensure adequate supply of quality water from Danjiangkou Reservoir to Beijing, surface water samples were taken from the tributaries of Danjiangkou Reservoir in the normal (May), flood (August) and dry (December) seasons of 2014,
Yan Liu, Yuanyuan Zhu, Xiaocui Qiao, Binghui Zheng, Sheng Chang, Qing Fu   +5 more
doaj   +1 more source

Changes of organic phosphorus in river waters in northern Bangladesh

International Journal of Agricultural Research, Innovation and Technology, 2015
The variability in phosphorus concentrations and the decomposition rates of organic phosphorus were measured in five selected rivers through four surveys in July and November of 2012, and February and May of 2013.
MJ Islam
doaj   +1 more source

The importance of dissolved organic phosphorus to phosphorus uptake by limnetic plankton [PDF]

Limnology and Oceanography, 1992
The substrate [α‐32P]ATP was used to represent the available fraction of the dissolved phosphomonoester (PME) pool and to measure its rate of assimilation by freshwater plankton in systems of low phosphorus availability. We compared [32P]ATP uptake to inorganic 32PO43‒ uptake.
E. Bentzen, W. D. Taylor, E. S. Millard
openaire   +1 more source

Phosphorus imbalance in the global ocean? [PDF]

, 2010
The phosphorus budget of the pre-human modern ocean is constrained applying the most recent estimates of the natural riverine, eolian, and ice-rafted input fluxes, the phosphorus burial in marine sediments, and the hydrothermal removal of dissolved ...
Algeo, Anderson, Anderson, Antia, Archer, Baturin, Baturin, Baturin, Benitez-Nelson, Berelson, Berelson, Berner, Berner, Beusen, Broecker, Burdige, Canfield, Colman, Delaney, Devol, Dunne, Faul, Faure, Filippelli, Filippelli, Filippelli, Froelich, Föllmi, Föllmi, Giraud, Harrison, Hartnett, Hedges, Hedges, Hensen, Ingall, Ingall, Ingall, Ingall, Klaus Wallmann, Kleypas, Mahowald, Martin, McManus, Meile, Najjar, Oschlies, Paytan, Raiswell, Redfield, Ruttenberg, Ruttenberg, Ruttenberg, Sarmiento, Seiter, Seitzinger, Slomp, Slomp, Slomp, Slomp, Smith, Stramma, Sutula, Syvitski, Tamburini, Tsandev, Tsandev, Van Cappellen, Van Cappellen, Vance, Wallmann, Wheat, Wheat, Zabel   +73 more
core   +1 more source

Quantifying Phosphorus Leaching Loss from Mollisol with Organic Amendments

Agronomy, 2022
The phosphorus (P) leaching from continuous fertilization is generally neglected in mollisol. The in situ leaching loss of phosphorus (P), especially dissolved organic P, is poorly quantified under organic amendments given its potential environmental ...
Hongyan Wang, Shuxiang Zhang, Chang Peng, Guangyu Chi, Xin Chen, Bin Huang, Caiyan Lu, Jizhi Li, Li Xu   +8 more
doaj   +1 more source

Forecasting wind speed data by using a combination of ARIMA model with single exponential smoothing [PDF]

, 2021
Wind serves as natural resources as the solution to minimize global warming and has been commonly used to produce electricity. Because of their uncontrollable wind characteristics, wind speed forecasting is considered one of the best challenges in ...
A. Rahman, Nur H., Hassan, Siti F., Kamisan, Nur A., Lee, Muhammad H., Nor, Maria E., Norrulashikin, Siti M.   +5 more
core   +1 more source

Distributions and stoichiometry of dissolved nitrogen and phosphorus in the iron-fertilized region near Kerguelen (Southern Ocean) [PDF]

Biogeosciences, 2015
During KEOPS2 (Kerguelen Ocean and Plateau Compared Study 2), we determined dissolved inorganic and organic nitrogen and phosphorus species in the naturally fertilized region of Kerguelen Island (Southern Ocean).
S. Blain, J. Capparos, A. Guéneuguès, I. Obernosterer, L. Oriol   +4 more
doaj   +1 more source

Estudo das diferentes formas de fósforo nas águas da plataforma continental do Amazonas Study of different forms of phosphorus in the Amazon continental shelf waters

Química Nova, 2007
Hydrological samples were collected on the continental shelf of the Amazon river to determine particulate organic and inorganic matter, dissolved organic phosphorus (DOP), phosphate, total particulate phosphorus (TPP), chlorophyll a, temperature ...
Maria de Lourdes Souza Santos, Kátia Muniz, Fernando Antonio do Nascimento Feitosa, Benício de Barros Neto   +3 more
doaj   +1 more source

Estimating submarine groundwater discharge in Jeju volcanic island (Korea) during a typhoon (Kong-rey) using humic-fluorescent dissolved organic matter-Si mass balance

Scientific Reports, 2021
We examined the residence time, seepage rate, and submarine groundwater discharge (SGD)-driven dissolved nutrients and organic matter in Hwasun Bay, Jeju Island, Korea during the occurrence of a typhoon, Kong-rey, using a humic fluorescent dissolved ...
Hyung-Mi Cho, Tae-Hoon Kim, Jae-Hong Moon, Byung-Chan Song, Dong-Woon Hwang, Taejin Kim, Dong-Hoon Im   +6 more
doaj   +1 more source

Lake metabolism: Relationships with dissolved organic carbon and phosphorus [PDF]

Limnology and Oceanography, 2003
Recent literature has suggested that for many lakes and rivers, the respiratory breakdown of organic matter (R) exceeds production of organic matter by photosynthesis (gross primary production [GPP]) within the water body. This metabolic balance (GPP > R; “heterotrophy”) implies that allochthonous organic matter supports a portion of the aquatic ...
Paul C. Hanson, Darren L. Bade, Stephen R. Carpenter, Timothy K. Kratz   +3 more
openaire   +1 more source