Showing results for: wetland vegetation Articles
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Evaluating the influence of water table depth on transpiration of two vegetation communities in a lake floodplain wetland
Groundwater plays an important role in supplying water to vegetation in floodplain wetlands. Exploring the effect of water table depth (WTD) on vegetation transpiration is essential to increasing understanding of interactions among vegetation, soil water, and groundwater. In this study, a HYDRUS-1D model was used to simulate the water uptake of two typical vegetation communities, Artemisia ...
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A study of the relationship between wetland vegetation communities and water regimes using a combined remote sensing and hydraulic modeling approach
Hydrologic condition is a major driving force for wetland ecosystems. The influence of water regimes on vegetation distribution is of growing interest as wetlands are increasingly disturbed by climate change and intensive human activities. However, at large spatial scales, the linkage between water regimes and vegetation distribution remains poorly understood. In this study, vegetation ...
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Micro-zooplankton grazing as a means of fecal bacteria removal in stormwater BMPs
A priority for environmental managers is control of stormwater runoff pollution, especially fecal microbial pollution. This research was designed to determine if fecal bacterial grazing by micro-zooplankton is a significant control on fecal bacteria in aquatic best management practices (BMPs); if grazing differs between a wet detention pond and a constructed wetland; and if environmental ...
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Biodiversity of the wetlands of the Kakadu Region, northern Australia
Abstract. The biodiversity values of the wetlands in the Kakadu Region of northern Australia have been recognised as being of national and international significance, as demonstrated through their listing by the Ramsar Convention on Wetlands. Analyses of the wetland biodiversity have resulted in the production of species list for many taxa, and some population and community-level analyses of ...
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Palmer hay flats trail hardening, Alaska - Case Study
Environmental damage from ATVs has increased as the use of four-wheelers becomes more popular for transportation and recreation. In some areas of Alaska, hundreds of miles of ATV trails cut across wetlands and streambeds, causing extensive damage to natural preserves. At the Palmer Hay Flats State Game Refuge, ATV riders caused the loss of vegetative cover and habitat values. A 6.5-mile trail ...
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Constructed wetlands as an alternative restoration measure for shallow lakes
This paper deals with the consequences of cultural eutrophication and unconventional solutions for shallow lake restoration. Cultural eutrophication is the primary problem that affects especially shallow lakes, due to their physical characteristics (e.g. shallow depth, lack of stratification). Palic Lake, a very shallow Pannonian lake, received treated municipal wastewaters coming from the ...
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Sustainability of decentralized wastewater treatment technologies
In many Countries, small communities are required to treat wastewater discharges to increasing standards of lesser environmental impacts, but must achieve that goal at locally sustainable costs. While biological membrane treatment (membrane bio-reactors (MBRs)) is quickly becoming the industry standard for centralized wastewater treatment plants, and would also be ideally suited also for ...
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Integrated constructed wetlands: water management as a land-use issue, implementing the ‘Ecosystem Approach’
Awareness of the need for social, economic and environmental coherence in the management of water is becoming evermore apparent. Water supply as well as treatment is becoming more costly; a challenge that is not only limited to developing countries. The use of wetlands, natural and constructed, is now more widely accepted as a means of tackling a range of problems in water management to deliver ...
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Effects of open water on the performance of a constructed wetland for nonpoint source pollution control
The seasonal performance of four differently configured constructed wetland systems was compared for the treatment efficiency of nonpoint source pollution. Dead plants in the constructed wetlands increased the nitrogen removal rate during winter by providing organic carbon, which is essential for the denitrification process. However, when the wetlands released phosphorus from the dead plants, the ...
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Remediation of sewage and industrial effluent using bacterially assisted floating treatment wetlands vegetated with Typha domingensis
This investigation reports the quantitative assessment of endophyte-assisted floating treatment wetlands (FTWs) for the remediation of sewage and industrial wastewater. Typha domingensis was used to vegetate FTWs that were subsequently inoculated with a consortium of pollutant-degrading and plant growth-promoting endophytic bacteria. T. domingensis, being an aquatic species, holds excellent ...
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Land use and riparian effects on prairie wetland sediment properties and herbicide sorption coefficients
Sorption of commonly used herbicides by wetland sediment can provide important information for herbicide fate modeling. The influence of sediment properties on herbicide sorption as a result of different land uses in the wetland catchment is unclear. We examined the effects of land use on the physiochemical properties of wetland sediments and the associations between these sediment properties and ...
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Coir Pallets - An environmentally friendly product from an environmentally friendly company
It was the aftermath of Hurricane Irene in the USA. The storm had caused chaos to the environment and the ecology was disrupted. Lake George in the state of New York was hit hard. Its banks were destroyed and water was starting to creep out. However, a group of courageous young people got together and started rebuilding the banks; However, a group of courageous young people got together and ...
By CoirGreen
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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 ...
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Comparison on soil organic carbon within two typical wetland areas along the vegetation gradient of Poyang Lake, China
Poyang Lake is an important wetland with international significance in biodiversity conservation and local carbon cycle. A study was conducted to investigate the effects of vegetation communities on seasonal and spatial variations of soil organic carbon (SOC) and dissolved organic carbon (DOC) in two dominant wetlands (dish-shaped pit wetland and delta wetland) of Poyang Lake, China. Results ...
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Potential of constructed wetland systems for treating tannery industrial wastewater
This paper reports on findings of a study on the performance of two units of a Horizontal Sub-Surface Flow Constructed Wetland (HSSFCW) units in treating wastewater effluent from a tannery industry. One of the HSSFCW units was planted with macrophytes, while the other was used as a control (without plants). Wastewater was fed into the wetland units at the mean flow rate of 0.045±0.005 m3/day. The ...
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EU 2010 biodiversity baseline — adapted to the MAES typology (2015)
Why do we need to revise the EU 2010 biodiversity baseline report? Scientific and policy context for the revision This report presents a revised overview of the EEA's EU 2010 biodiversity baseline report. The revision is necessary because the typology of ecosystems used in the 2010 report has since been altered by a working group of biodiversity experts. The EU 2010 biodiversity baseline report ...
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Examining plant mediated CH4 flux in a wetland using dark and light chambers and the Picarro GasScouter - Case Study
Wetlands are an important global source of methane (CH4), a potent greenhouse gas (GHG) (Ciais et al., 2013). Wetland soils are typically strong CH4 sources, however high moisture content limits the diffusive transport of CH4 from soil pores to the soil-atmosphere interface. Plants play an important role for gas exchange in wetlands by providing preferential pathways for CH4 to reach the surface, ...
By Eosense Inc
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Project - Phase 2 Review of Potential Cumulative Effects to Surface Water and Groundwater from In-Situ Oil Sands Operations, Focusing on the MacKay River Watershed
Client: Cumulative Environmental Management Association (CEMA), Ms. Katherine Duffett, 9914 Morrison Street, Suite 214 Fort McMurray, AB T9H 4A4 Jon Paul Jones, Ph.D., Senior Water Resources Modeller, Suncor Energy Inc. 150 – 6th Avenue S.W., Calgary, Alberta, Canada, T2P 3E3 Tel: 403-296-8128 jojones@suncor.com Key Personnel: Dirk Kassenaar, E.J. Wexler, Earthfx Inc. ...
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Treatment of municipal wastewater using horizontal flow constructed wetlands in Egypt
The aim of this study was to evaluate the performance of two pilot horizontal flow constructed wetlands (HFCWs) with and without vegetation. Three types of plants namely Canna, Phragmites australis and Cyprus papyrus were used. The surface area of each plant was 654 m2. The flow rate was 20 m3 d−1 and the organic loading rate range was 1.7–3.4 kg BOD d−1 with a detention ...
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Water masses surface temperatures assessment and their effect on surrounding environment
The aim of this study was to evaluate the effect of water masses on the surface temperature with direct impact on the surrounding area. Three systems were used for the study: a fully vegetated system (subsurface flow constructed wetland (CW)), a lake with no vegetation and a lake partially vegetated with Lemna minor. Infrared thermography was applied for the different systems analysis, ...
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