wetlands modeling Articles

  • Senix Water Level Sensors Drive Irrigation Automation Project

    Australia’s Water Crisis Irrigation management is serious business in Australia especially within the Murray-Darling Basin, a 1,000,000 square kilometer watershed that is home to Australia’s most productive agricultural land. The basin’s 23 rivers have ...


    By Senix Corporation

  • Wetland friendly breakfast in Argentina

    “The natural flow of water in the Parana Delta is altering,” tells a local farmer. “We know this is caused by the increasing amount of infrastructure for the conversion of the Parana Delta wetlands into soy plantations. There is evidence that as a result, communities are no longer protected during the regular floods that occur in the Delta.” He is eager to find solutions ...


    By Wetlands International

  • Numerical modelling: a tool for better constructed wetland design?

    There is a need for a simplified computer-based design tool for subsurface flow constructed wetlands (CWs) which is based on process-based numerical models. Parameters of existing design guidelines and rules have been derived from experiments under specific conditions. Therefore designing CWs using these parameters is limited to these conditions (i.e. temperature, wastewater composition, filter ...


    By IWA Publishing

  • Emerging Models for Nitrogen Removal in Treatment Wetlands

    Engineering textbooks tell a simple story about nitrification and denitrification. Classic nitrification-denitrification theory begins with the bacterial genera Nitrosomonas and Nitrobacter performing ammonia and nitrite oxidation, respectively. Then facultative or obligate anaerobic bacteria denitrify by oxidizing organic carbon with nitrate. Recent advances in environmental microbiology have ...

  • Modelling removal of microbiological contaminants along a series of constructed wetlands

    The rate of removal of microbial pollutants along a series of constructed wetlands for treating wastewater in Covenant University, Ota, Nigeria were monitored from inlet to the discharge point into river Atuara and at 300 m upstream and downstream. The microbiological test results analysed were those of most probable number (MPN) of coliforms ( Escherichia coli ), coliform counts in cfu/100 ...


    By Inderscience Publishers

  • Simplified hydraulic model of French vertical-flow constructed wetlands

    Designing vertical-flow constructed wetlands (VFCWs) to treat both rain events and dry weather flow is a complex task due to the stochastic nature of rain events. Dynamic models can help to improve design, but they usually prove difficult to handle for designers. This study focuses on the development of a simplified hydraulic model of French VFCWs using an empirical infiltration coefficient ...


    By IWA Publishing

  • Hydraulic model comparison of vertical-flow regimes in constructed wetlands

    Vertical-flow treatment wetlands have come into use because of their ability to provide highlevel secondary and tertiary wastewater treatment at a fraction of the land use of horizontal subsurface flow or free water surface wetlands. The flow regime typically selected is vertically downward, allowing wastewater to infiltrate through the system by gravity. However, recent research suggests that ...

  • Water quality monitoring in wetland ecosystems using microbial model communities

    This study reviews the concept of model communities for water quality assessment in aquatic ecosystems. The feeding habits of protozoans were used to unite species into functional, trophic groups. Colonising communities were dominated by bacterivorous Flagellate Species (Sf). A new Index of Periphyton Flagellates (IPF) as an indicator of the trophic status of a water-body was developed. ...


    By Inderscience Publishers

  • Global supply of freshwater: the role of treatment wetlands

    In 2000, humans used approximately 60% of run-off that is geographically and temporally accessible. With projected increases in population, humans may use between 72-99% (depending on whether per capita increases are factored) of accessible run-off by 2025, even accounting for new dam construction. Wetlands have the capability to filter polluted water and could therefore potentially affect access ...


    By Inderscience Publishers

  • A fuzzy quality index for the environmental assessment of a restored wetland

    This paper describes the feasibility study for the restoration of agricultural land with a tendency to become waterlogged into a natural wetland, conceived to mitigate floods and to remove nutrients from the water drained from the cultivated plots. The wetland model, developed in aquatox, includes the nutrient dynamics both in the water and in the sediment, and the vegetation that is expected to ...


    By IWA Publishing

  • The future of European floodplain wetlands under a changing climate

    In the future, climate change may severely alter flood patterns over large regional scales. Consequently, besides other anthropogenic factors, climate change represents a potential threat to river ecosystems. The aim of this study is to evaluate the effect of climate change on floodplain inundation for important floodplain wetlands in Europe and to place these results in an ecological context. ...


    By IWA Publishing

  • Wetlands for Industrial Wastewater Treatment at the Savannah River Site

    ABSTRACT The A-01 effluent outfall, which collects both normal daily process flow and stormwater runoff from a industrial research facility, did not meet the South Carolina Department of Health and Environmental Control (SCDHEC) National Pollutant Discharge Elimination System (NPDES) permit limits for metals, toxicity, and total residual chlorine at the outfall sampling point. Copper was the ...


    By Weston Solutions, Inc

  • The influence of climate and dam construction on the Ibera wetlands, Argentina

    Abstract  The purpose of this work is to assess the impact on the Esteros del Ibera wetland ecosystem caused by the Yacyreta dam, a large hydroelectric power plant on the Parana River, Argentina, in comparison to other factors of environmental change. The project of the dam started around 1970. The power plant began operating in 1994. In 1989, the neighboring Ibera wetland ecosystem showed ...


  • Identifying Feasible Reuse Opportunity: Wetland Rehydration With Reuse

    As a fast growing coastal community, the City of Panama City Beach, Florida has experienced the problem of expanding wastewater treatment capacity while identifying a feasible reuse alternative to their treated effluent surface water disposal. The goal of the City’s project was to identify and begin implementing the most feasible wastewater reuse option(s) available in order to eliminate direct ...

  • Downstream Voices - Wetland Solutions to Reducing Disaster Risk

    Until recently, the world’s response to inevitable climate change was based on producing ever more precise forecasts of what would happen locally – running ever more sophisticated climate models to generate data on the climate in Bamako, Mali in 2040, for instance – and then working out how to “adapt” to the change. While ever bigger super-computers with ever more ...


    By Wetlands International

  • Impact of sedimentation on wetland carbon sequestration in an agricultural watershed

    Received for publication January 9, 2008. Landscape redistribution of soil C is common within agricultural ecosystems. Little is known about the effects of upland sediment deposition on C dynamics within riparian wetlands. To assess sedimentation impact, we obtained profile samples of wetland soil and used the combination of 137Cs, 210Pb, and 14C chronological markers to determine rates of C ...

  • Managing Mali’s Wetland Wealth for People and Nature

    Introduction Wetlands International has been in Mali since 1998, when it started a partnership with the national government to help better manage the country’s water resources for both its people and nature. Those early efforts involved scoping out the state of Mali’s unique natural habitats, not least its globally important wetland, the Inner Niger Delta, and sharing those ...


    By Wetlands International

  • Dynamic simulation of water resources in an urban wetland based on coupled water quantity and water quality models

    Water quality in wetlands plays a huge role in maintaining the health of the wetland ecosystem. Water quality should be controlled by an appropriate water allocation policy for the protection of the wetlands. In this paper, models of rainfall/runoff, non-point source pollution load, water quantity/quality, and dynamic pollutant-carrying capacity were established to simulate the water ...


    By IWA Publishing

  • Modelling Wetland Bird Response to Water Level Changes in the Lake Ontario – St. Lawrence River Hydrosystem

    Lake Ontario and St. Lawrence River (LOSL) wetland bird abundance and diversity are greatly influenced by lake and river hydrology. Our study used an interdisciplinary ecosystem approach, blending avian and plant ecology, ecohydraulic, statistical ecology and modelling to evaluate potential impacts of water level fluctuations on indicator species representative of the wetland breeding bird ...


    By Springer

  • Modeling Wetland Plant Community Response to Assess Water-Level Regulation Scenarios in the Lake Ontario – St. Lawrence River Basin

    The International Joint Commission has recently completed a five-year study (2000–2005) to review the operation of structures controlling the flows and levels of the Lake Ontario – St. Lawrence River system. In addition to addressing the multitude of stakeholder interests, the regulation plan review also considers environmental sustainability and integrity of wetlands and various ecosystem ...


    By Springer

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