phosphorus modeling News

  • The phosphorus index: changes afoot

    Twenty years after its inception, the continued need for water quality improvement has led to a call for further advancement of the Phosphorus Index Phosphorus (P) is both an essential nutrient in agricultural fields and a contributor to poor water quality in surface waters. To encourage improved P management in fields, the P Index was proposed as a risk assessment tool in 1992. After 20 ...

  • From noxious to precious - moving phosphorus

    The International Institute for Sustainable Development has issued a report today looking at ways to keep phosphorus on the land and out of waterways as part of an overall plan to address issues associated with the health of Lake Winnipeg. The problem of excessive phosphorus loading is affecting water bodies in all parts of the world, including Lake Winnipeg, which is the tenth ...


    By GLOBE Foundation

  • More dynamic indicators needed to measure phosphorus’s availability

    Current knowledge on the availability of mineral resources is explored in a recent study, which focuses on phosphorus as a key example. Static measures of availability, such as the consumption-to-production ratio, are useful as early warning signals, the researchers suggest, but more dynamic indicators that consider technological development and population change are needed to better inform ...

  • Europe`s discharge of nitrogen and phosphorus calculated

    Agriculture discharges the most nitrogen into Europe's coastal seas. Discharges of phosphorus come from treatment works to a larger extent, although in some areas agriculture and forestry are responsible for large discharges. This is shown by a study carried out by scientists at SMHI. For the first time scientists have carried out a complete calculation of the amount of nitrogen and ...

  • Potential for more efficient energy, land and phosphorus use by 2050

    There is a large potential to improve the global efficiency of energy, land and phosphorus use, finds new research which modelled the effects of four worldwide scenarios between 2010 and 2050. An ‘ambitious resource strategy’ could moderate the increases in energy use (+25% globally instead of +80% in the baseline scenario), phosphorus use (+9% instead of +40%) and arable land (-9% ...

  • Shimadzu Releases Total Nitrogen/Total Phosphorus Online Analyzers

    Shimadzu’s TNPC-4110 Series online analyzers are capable of measuring Total Nitrogen (TN) and Total Phosphorus (TP) in water. Easy-to-handle and simple-to-maintain, the TNPC-4110 analyzers are intended for use as automatic water analyzers for the water quality regulations currently being prepared for implementation governing TN and TP. These nutrients are monitored as indicators of the harmful ...

  • Innovyze releases InfoWorks ICM Generation V3.0; continuing to set the standard for smart integrated catchment modeling

    Innovyze, a leading global innovator of wet infrastructure modeling and simulation software and technologies, today announced the release of the V3.0 Generation of InfoWorks ICM, a comprehensive urban drainage modeling solution that enables users to work more efficiently and get the reliable information they need to make ...


    By Innovyze

  • EPA, MDE, Prince George’s County Announce Public, Private Partnership Model to Accelerate Green Stormwater Controls and Support Local Job Creation

    The U.S. Environmental Protection Agency, Maryland Department of Environment (MDE) and Prince George’s County today announced a $100 million initiative to demonstrate how community-based, public-private partnerships can spur green infrastructure-driven stormwater controls, while creating thousands of local jobs and boosting economic growth. EPA and MDE have joined forces with Prince ...

  • Water quality improves after fertilizer ban - study

    In an effort to keep lakes and streams clean, municipalities around the country are banning or restricting the use of phosphorus-containing lawn fertilizers, which can kill fish and cause smelly algae blooms and other problems when the phosphorus washes out of the soil and into waterways. But do the ordinances really help reduce phosphorus pollution? That’s been an open question until now, says ...


    By GLOBE Foundation

  • Integrated water management helps control agricultural pollution

    By 2015, all surface waters and groundwaters in the European Union should aim to achieve 'good status', with healthy ecosystems and low levels of pollution. The goals for the management of these bodies of water are set out under the Water Framework Directive1. Recent research suggests that integrated management of water catchment areas could be used to control sources of pollution within river ...

  • EPA takes step to improve Lake Champlain water quality

    After a careful review, EPA has disapproved Vermont’s 2002 water quality plan that set phosphorus targets for discharges into Lake Champlain. Following this action, EPA intends to work closely and collaboratively with the State to develop a new plan for reductions in phosphorus from sources in Vermont. Elevated levels of phosphorus cause algae blooms and other water quality problems in Lake ...

  • Monitoring diffuse pollution in EU river catchment areas

    In recent decades, discharges of pollutants from waste water treatment plants and industry have been successfully identified and in many cases reduced, but assessing inputs of diffuse pollution from land, and the degree of retention of pollutants, such as nitrogen and phosphorus, within surface water systems is harder to achieve. A recent study has compared different methods used to estimate ...

  • Environmental successes of the decade

    Picked from 38 published papers, ‘Orthophosphate concentrations in the River Thames: reductions in the past decade' has been given the special accolade of CIWEM's and Wiley's Water and Environment Journal Best Paper Award. The authors, Jane Kinniburgh and Dr Mark Barnett, studied the impact of phosphorus removal from sewage effluent on the Thames; model predictions in the mid-1990s; and the ...

  • Excess, imbalanced nutrients in rivers change coastal carbon sink

    Water quality in rivers has clear knock-on effects for water out at sea. Researchers have examined how excess nutrients in rivers, from fertilisers and industrial pollution, can influence whether the coastal sea they flow into acts as a source or a sink for atmospheric carbon dioxide. Human activities, such as using large quantities of fertilisers and discharging industrial and municipal waste ...

  • EPA Takes Steps to Improve Water Quality of Illinois River

    Today, U.S. Environmental Protection Agency (EPA) is making available the Illinois River Watershed Modeling Program which resulted from several years of collaboration with local stakeholders, states and tribes in both Ark. and Okla. The Modeling Program will assist in the development of water pollution controls needed to meet water quality standards throughout the watershed and relies on two ...

  • Cutting nutrient pollution may curb harmful algal blooms

    Reducing nitrogen and phosphorus pollution may be an easier, more effective way to control harmful algal blooms in water than addressing warming temperatures, say researchers. Cyanobacteria, also known ...


    By SciDev.Net

  • EPA reaffirms December 2010 deadline for Bay TMDL (PA)

    As part of the process for restoring the Chesapeake Bay Watershed, EPA has reaffirmed the federal-state commitment to establish the Bay Total Maximum Daily Load (TMDL) - or pollution diet - by the end of this year. The Bay TMDL will set limits on nitrogen, phosphorus and sediment throughout the 64,000-square-mile watershed. Backed by a strong accountability framework, the Bay TMDL includes state ...

  • EPA Announces Great Lakes Restoration Initiative Grant to Ohio Lake Erie Commission to Study Causes of Harmful Algal Blooms and Hypoxia

    The U.S. Environmental Protection Agency today announced a $500,000 Great Lakes Restoration Initiative grant to the Ohio Lake Erie Commission to study the causes of harmful algal blooms and low oxygen levels in Lake Erie. “This EPA Great Lakes Restoration Initiative grant will fund crucial scientific work to answer questions about the role of nutrients, such as phosphorus, in harmful algal ...

  • North Sea needs more protection from nutrient inputs

    Reductions in the nutrients nitrogen and phosphorus flowing from rivers into the North Sea have had clear benefits on marine health in coastal waters, according to a recent study. However, the reductions are less effective in improving the condition of deeper offshore waters. Tougher measures to manage nutrient loads and prevent eutrophication are recommended. Reductions in nutrient levels in ...

  • Choking coastal waters

    WRI, together with Dr. Bob Diaz at the Virginia Marine Institute, has identified and mapped 415 eutrophic and hypoxic coastal systems worldwide through an extensive literature review. Of these, 169 are documented hypoxic areas, 233 are areas of concern and 13 are systems in recovery. Our findings highlight the dramatic growth of areas receiving the endflows of nitrogen and phosphorus created by ...

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