/ Investigation of a delta marsh restoration project proposed forthe Don River in Toronto, Ontario, underlines several concerns aboutconstructed wetland projects designed for water quality improvement andaquatic habitat enhancement. The Don is a highly urbanized river that hasundergone significant physiographic modifications and continually receives acomplex mixture of conventional, metallic, a...

Urban stormwater runoff is being recognized as a major source of pollutants to receiving waters and a number of recent investigations have evaluated stormwater runoff quality and best management practices to minimize pollutant input to receiving waters. Particle-bound contaminants are widespread in the urban environment causing impairment to urban water bodies such as streams and lakes. Non-poi...

In an urbanized world, the sustainability of cities will depend on their form and urban structure. this sense, fabrics that are compact, dense, green, suitable for non-motorized transport methods more environmentally efficient. For purpose contributing new tools to design, planning, nature in residential areas, study characterizes six wetlands Latin American city Concepción (Chile), which is kn...

Inorganic nitrogen is commonly found in three different forms: Ammonia (NH4), nitrite (NO2), and nitrate (NO3). Ammonia is a principle form of nitrogen found in urban wastewater and runoff especially from pastures and feedlots. According to Kadlec and Knight (1996), ammonia, or ammonium nitrogen, is the preferred nutrient form for most wetland plants because of its importance in plant growth. A...

The quantity of some trace metals of mosquito larvae in Shadegan International Wetland from Iran was evaluated. Water, waterbed sediment, and mosquito larvae samplings were carried out from an urban site in the east of the wetland, using standard methods in December 2011. The identified Culiseta subochrea (Edwards) and Aedes caspius s.l. (Pallas) larvae, water, and waterbed sediment samples wer...

Levels of contaminants in fish are of particular interest because of the potential risk to humans consuming them. This paper examines the levels of cadmium, lead, zinc and copper in liver and muscle tissue of Esox lucius and in sediments from the Anzali international wetland in Iran. The wetland is a nursery and feeding habitat for fish species both from the lagoon and the Caspian Sea, which ar...

Despite the overall trend of worldwide deforestation over recent decades, reforestation has also been found and is expected in developing countries undergoing fast urbanization and agriculture abandonment. The consequences of reforestation on landscape patterns are seldom addressed in the literature, despite their importance in evaluating biodiversity and ecosystem functions. By analyzing long-...

In the United States, stream restoration is an increasing part of environmental and land management programs, particularly under the auspices of compensatory mitigation regulations. Markets and regulations surrounding stream mitigation are beginning to mirror those of the well-established wetland mitigation industry. Recent studies have shown that wetland mitigation programs commonly shift wetl...

Purpose: The objective was to evaluate the water quality based on physical and chemical parameters in different quadrants of an urban wetland correlate variables that may show possible natural anthropogenic polluting sources. Theoretical framework: Wetlands are essential ecosystems for maintenance ecological balance, biodiversity organisms, reserves. Studies wetlands important understanding the...