Although soil phosphorus is essential for vegetation growth it not always found in labile forms, hampering its absorption by plants, and limited forest ecosystems. This study explores P state availability calcareous soils, determining which processes affect different pools parameters influence productivity of a Mediterranean pine species. We used sequential fractionation method to determine fra...

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• EPS-C, N, P preferentially retained during adsorption and coprecipitation with Fh. EPS mass uptake selective fractionation opposite for the two formation pathways. Proteins acidic polysaccharides selectively in complexes. Lipids polysaccharide components coprecipitates. Differential sorption process of Fh revealed by 2D-COS-FTIR. Recent work shows that microbially-derived compounds constitute...

conclusions as a result of the full range uv-vis scanning of the responsible band in the hptlc experiments (200-700 nm), the flavonoid was the most imaginable natural compound. results through the bioassay guided fractionation method, the greatest antibacterial activities were related to the n-hexane extract. it was also revealed that the effective anti-mrsa agent of the assessed plant was a re...

Nano and colloidal particles (1-1000 nm) play important roles in phosphorus (P) migration loss from agricultural soils; however, little is known about their relative distribution arable crop soils under varying geolandscapes at the regional scale. Surface (0-20 cm depth) were collected 15 fields, including two sites with different carbon input strategies, Zhejiang Province, China, water-dispers...

We developed a complex eutrophication model to simulate the current chemical and biological properties of Lake Washington (USA). The model reproduces the key epilimnetic and hypolimnetic temporal patterns of the system and results in a good fit between simulated and observed monthly values. The relative error of model estimates was below 20% for most of the water quality parameters (phytoplankt...

Dairy manure has been linked to elevated phosphorus (P) levels in surface waters of Lake Okeechobee basin. Prevalent soils of the basin (Aquods) retain little P in sandy, quartz-dominated upper horizons, and lateral P transport is favored by high water tables. The stability of manure-derived P forms is thus an important factor in the Okeechobee basin and other regions where soil and hydrologic ...