نتایج جستجو برای: phosphorus loss
تعداد نتایج: 485722 فیلتر نتایج به سال:
Although phosphorus has long been considered an important factor in the growth of diverse biota such as bacteria, algae, and zooplankton, insect nutrition has classically focused on dietary protein and energy content. However, research in elemental stoichiometry has suggested that primary producer biomass has similar N:P ratios in aquatic and terrestrial systems, and phosphorus-rich herbivores ...
abstractbackground and objectives:the phosphorus is second limiting nutrient in soil for crop production after nitrogen. mobility and availability of phosphorus (p) in soils is affected by phosphorus desorption characteristics. information about the effect of organic matter on kinetics and thermodynamics of p desorption in calcareous soils of east azerbaijan province is limited. the objective o...
This paper presents an investigation of the effects of experimental high intestinal obstruction in dogs, with particular emphasis on changes observable in the distribution of phosphorus in the blood. The experiments were undertaken as a part of a series of studies of phosphorus distribution in the blood of man and experimental animals in a variety of pathologic conditions. In dogs, marked chang...
Phosphorus (P) Index assessment requires independent estimates of long-term average annual P loss from fields, representing multiple climatic scenarios, management practices, and landscape positions. Because currently available measured data are insufficient to evaluate P Index performance, calibrated and validated process-based models have been proposed as tools to generate the required data. ...
The filamentous green alga Cladophora grows to nuisance proportions in Lake Ontario. Stimulated by high phosphorus concentrations, growth results the degradation of beaches and clogging industrial water intakes with attendant loss beneficial uses. We develop a multi-module bioavailable model examine efficacy management strategies mitigating algal growth. platform includes modules simulating hyd...
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