Constructed Borrow-Pit Wetlands as Habitat for Aquatic Birds in the Peace Parkland, Canada

Stop 1 – Whatoff’s Borrow Pit

The Des Moines Lobe was the largest of several lobes of the Laurentide Ice Sheet that extended into the mid-continent region of North America near the end of the last glaciation. At its maximum extent, ~13,800 radiocarbon years ago, the lobe was up to 250 km wide and covered greater than 10 km in southern Minnesota and north-central Iowa (Fig. 1). The lobe deposited diverse sediments, but only ...

Remediation in Constructed Wetlands

Constructed wetlands are in use to improve the quality of contaminated groundwaters at many sites in the USA. Target contaminants include both organic and inorganic constituents. Volatile and nonvolatile hydrocarbons are found in ground water at closed petroleum refinery sites, and in leachates from landfills. Polycyclic aromatic hydrocarbons are pollutants at many sites. Chlorinated organics o...

Constructed Wetlands for Wastewater Treatment

Removal processes for arsenic in constructed wetlands.

Arsenic pollution in aquatic environments is a worldwide concern due to its toxicity and chronic effects on human health. This concern has generated increasing interest in the use of different treatment technologies to remove arsenic from contaminated water. Constructed wetlands are a cost-effective natural system successfully used for removing various pollutants, and they have shown capability...

Chapter 20 - Constructed Wetlands

Wetlands have been recognized as a natural resource throughout human history. Their importance in their natural state is appreciated by such people as the Marsh Arabs around the confluence of the Tigris and Euphrates rivers in southern Iraq, as well as in managed forms (e.g., rice paddies, particularly in Southeast Asia) (Mitsch and Gosselink, 2000). The water purification capability of wetland...