Showing results for: wetland area Articles
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Summer hydroclimatology of an extensive low-gradient wetland: Polar Bear Pass, Bathurst Island, Nunavut, Canada
Polar Bear Pass (PBP) (75°40′N, 98°30′W) is considered a critical wetland area for migratory birds, caribou and muskox. Little is known of its climatology and hydrology. Here we evaluate both the short-term and long-term summer climatic record for this wetland. A 10 m high automatic weather station (AWS) was established here 27 years ago, and in 2007 this centrally located AWS was supplemented by ...
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Microbial degradation of N-methyl-2-pyrrolidone in surface water and bacteria responsible for the process
Due to widespread utilization in many industrial spheres and agrochemicals, N-methyl-2-pyrrolidone (NMP) is a potential contaminant of different surface water ecosystems. Hence, investigation was made into its aerobic microbial degradability in samples of water from a river, wetland area and spring. The results showed that the compound was degradable in all water types, and that the fastest ...
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Predicting Sustainable Ground Water to Constructed Riparian Wetlands: Shaker Trace, Ohio, USA
Water isotopy is introduced as a tool to design, locate, and select storm water best management practices for the prediction of sustained ground water inflows to prospective constructed wetlands. A primer and application of the stable isotopes, 18O and 2H, are discussed for riparian wetland restoration areas among an agricultural landscape in southwestern Ohio. Conventional piezometric ...
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Ecological function zoning of Poyang Lake wetland: a RAMSAR site in China
Ecological function zoning involves the spatial delineation of ecological functions based on the physical environment and ecosystem service functions, as well as the demands of eco-environmental protection and socio-economic development of the area according to the theory of ecological function regionalization. In this context, we defined the boundary of Poyang Lake wetland using geographic ...
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Copper and nickel effects on survival and growth of Northern Leopard Frog (Lithobates pipiens) tadpoles in field‐collected smelting effluent water
Trace metals can have subtle, yet chronic impacts on organisms by inducing physiological stress that reduces their survival or impedes their ability to tolerate additional environmental stressors. However, toxicity literature indicates that aquatic organisms react differently to trace metals depending on the environments in which they reside. The objective was to understand the response of ...
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Q’eqchi’ best practices and livelihoods in the wetlands of El Estor, Izabal, Guatemala
The Q’eqchi’ communities of El Estor, Izabal, Guatemala, are vulnerable to climate variability and different hydro-climatic threats. As part of the Partners for Resilience country programme, the Guatemalan Red Cross and Wetlands International prepared a study on wetland-related best practices and livelihoods of the Maya Q’eqchi’ people. The study systematizes their ...
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DTI installs 3 blind horizontal remediation wells in cobble
The Issue An active retail gas station next to a wetland area has benzene and trimethylbenzene plumes in a water table aquifer containing sand, gravel and cobbles. Rock fragments and boulders several feet in diameter lie in the vadose zone, between the ground surface and the water table. Business at the gas station would slow down or stop for an extended period of time if a vertical air sparge ...
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Integrated Constructed Wetlands: concept, design, site evaluation and performance
'Integrated Constructed Wetlands' (ICW) are a joined-up approach to land and water management. Significant synergies were achieved by explicitly combining environmental, ecological and aesthetic objectives. Intercepted precipitation was found to be the main factor determining treatment efficacy. Soil infiltration and evapo-transpiration combined to enhance hydraulic residence time. A wetland area ...
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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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Factors Influencing Mercury in Freshwater Surface Sediments of Northeastern North America
We report on an inventory and analysis of sediment mercury (Hg) concentrations from 579 sites across northeastern North America. Sediment Hg concentrations ranged from the limit of detection ca. 0.01–3.7 g g–1 (dry weight, d.w.), and the average concentration was 0.19 g g–1 (d.w.) Sediment methylmercury concentrations ranged from 0.15 to 21 ng g–1 (d.w.) and the mean concentration was 3.83 ng g–1 ...
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An analysis of the damages of Chakoria Sundarban mangrove wetlands and consequences on community livelihoods in south east coast of Bangladesh
Mangrove wetlands constitute a part of human natural and cultural heritage. They have importance for the country's economic, industrial, ecological, socio–economic and cultural aspects. The Chakoria Sundarban is the second largest mangrove wetland ecosystem in south eastern coastal region in Bangladesh. It covers 3.5% of the main Sundarban. The poor of the Chakoria mangrove wetland areas were ...
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Variable Dosing Yields Economy and Results - Carlsbad case study
Business OverviewThe Carlsbad Municipal Water District is a subsidiary of the City of Carlsbad, located in San Diego County, California. The district’s service area covers approximately 85% of the city, an area of about 32 square miles. The District provides wastewater collection services through 145 miles of collection pipelines, 40 miles of sewer laterals and 16 pump stations. The Batiquitos ...
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Stormwater Channel Embankment Protection - Case study
City's Relocation and Floodplain Management Project Included Embankment Protection at Culvert Outflows Appteton, Wisconsin -- The GEORUNNER flow protection mats, manufactured by local Appleton company, Presto Geosystems, was employed as additional embankment stability on the channel alignment project. The Apple Creek Relocation and Floodplain Management Project includes re-aligning approximately ...
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PEWE Pacific Natural Foods Case Study
Pacific Natural Foods (PNF) manufactures a variety of organic food products. Chuck Eggert, company founder, took things further when he purchased 2,000 Willamette Valley acres to showcase sustainable farming practices. And these farms produce much of Pacific Food’s ingredients. This commitment to quality has lead to strong growth and increased process water. Matching environmental ...
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Monroe, Connecticut, USA - Case Study
Monroe Facts: former heating oil terminal from the mid-1950's to the late 1970s No. 2 fuel oil was stored at the site Multiple releases occurred over time Site and surrounding area are wetlands, with the former terminal area elevated with fill material for commercial use Irregular fill consisting of sand, silt, gravel and boulders with some timbers and metal buried throughout the site ...
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Flexible transition Mat/TRM system protects Stormwater Channel Embankments - Case Study
City’s Relocation and Floodplain Management Project Included Embankment Protection at Culvert Outflows The GEORUNNER flow protection mat system, manufactured by local Appleton company, Presto Products Company, was employed as additional embankment stability on the channel alignment project. The Apple Creek Relocation and Floodplain Management Project includes re-aligning approximately ...
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Nova Scotia - Communal Development case study
Site: Voyager Lakes Development Location: Nova Scotia, Canada “Unique” and “Visionary” are terms that have been used to describe the new equestrian oriented Voyageur Lakes development outside Halifax, Nova Scotia. Voyageur Lakes is a mixed-use development that includes, residential homesites, shops and at the heart of the development an Equestrian Center. Voyageur ...
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Significance of enhanced infiltration due to groundwater extraction on the disappearance of a headwater lagoon system: Toluca Basin, Mexico
Mexico City relies significantly on groundwater resources drawn from the Sistema Lerma well field located in the Toluca Basin, Mexico. Enhanced infiltration caused by groundwater extraction is suspected to be both a prime factor in the disappearance of a lagoon system at the Toluca Basin and a potential risk to long-term groundwater quality. A combined approach of field investigation and ...
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Snowcover and melt characteristics of upland/lowland terrain: Polar Bear Pass, Bathurst Island, Nunavut, Canada
The seasonal snowcover and snowmelt (2008–2010) of an extensive low-gradient wetland at Polar Bear Pass, Bathurst Island, Nunavut, Canada (75°40′ N, 98°30′ W) was examined. This wildlife sanctuary is characterized by two large lakes and numerous tundra ponds, and is bordered by rolling hills with incised hillslope stream valleys. In arctic environments snow ...
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Analysis of information sources on waterbird migration in the Azov–Black Sea region of Ukraine: bibliography, count results and ring recoveries
The study of bird migrations, particularly waterbirds, is one of the most important areas of ornithological science, but is also very important for designing measures aiming to protect them along the entire African–Eurasian fl yway. In this context, it is vital to distinguish the value of each more or less large wetland area as stopover for migratory birds. One step in this direction is to ...
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