Results 21 to 30 of about 40,309 (296)
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 +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
Influence of the hyporheic zone on the phosphorus dynamics of a large gravel-bed river, Garonne River, France [PDF]
, 2009 Phosphorus (P) concentrations in sediments and in surface and interstitial water from three gravel bars in a large river (Garonne River, southern France) were measured daily, downstream of a wastewater treatment plant for a city of 740 000 inhabitants ...
Simeoni-Sauvage, Sabine +10 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 +8 more
doaj +1 more source
Excretion of Dissolved Organic Phosphorus in Tropical Brackish Waters
Estuarine, Coastal and Shelf Science, 1981 Dissolved organic phosphorus (DOP) release was measured on natural populations of a brackish lagoon in Ivory Coast (West Africa). DOP mean excretion is 8% of net phosphorus absorption, and represents 1·7% h −1 of the biomass. Only 28% of biomass is involved in rapid uptake and excretion. Release of P is inversely proportional to the C p :N p ratio of
/Lemasson, Lionel, /Pagès, Jean
openaire +2 more sources
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 +3 more
openaire +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 +4 more
doaj +1 more source
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 +3 more
doaj +1 more source
Journal of Limnology, 2014 Phosphorus (P) is an important limiting nutrient in aquatic ecosystems and knowledge of P cycling is fundamental for reducing harmful algae blooms and other negative effects in water.
Peifang Wang +4 more
doaj +1 more source
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 +6 more
doaj +1 more source