The potential of reed beds to act as biofilters of pathogenic and environmental mycobacteria was investigated through examination of the fate of mycobacteria in a constructed reed bed filtering effluent from a large captive wildfowl collection. Particular emphasis was placed on the presence and location of Mycobacterium avium--the causal agent of avian tuberculosis (ATB)--in an effort to clarif...

The Constructed Wetland Model No. 1 (CWM1) is a biokinetic model describing microbial dynamics and transformation and degradation processes in subsurface flow constructed wetlands. The implementation of CWM1 in the HYDRUS program package (©PC Progress s.r.o.) was verified using data from controlled environment column experiments. These 20-day long batch experiments used synthetic wastewater and...

The impact of thermal pollution of leachate from a post-coal mine heap on three macrophyte species: Phragmites australis, Typha latifolia, and Scirpus sylvaticus was examined over the entire vegetation season. Hydrological measurements showed that the temperature of the leachate was ca 50 °C at the site of leachate inflow and decreased to ca 15 °C at the end of discharge canal. The annual tempe...

Constructed wetlands, including floating islands, are a suitable technology for wastewater treatment. They low cost and respectful with the environment, which is why they significantly beneficial agricultural irrigation systems. One of limiting factors in structuring efficient constructed wetlands choice plant species that can tolerate eliminate contaminants. Macrophytes have an important role,...

This study focused on the diversity of bacterial communities from two series of two-stage constructed wetlands (CWs) treating tannery wastewater, under different hydraulic conditions. Series were separately planted with Typha latifolia and Phragmites australis in expanded clay aggregates and operated for 31 months. The effect of plant species, hydraulic loading and unit stage on bacterial commu...

—Little information exists on breeding Greater Sandhill Cranes (Grus canadensis tabida) in riparian wetlands of the Intermountain West. We examined the nesting ecology of Sandhill Cranes associated with riparian and palustrine wetlands in the Henry’s Fork Watershed in eastern Idaho in 2003. We located 36 active crane nests, 19 in riparian wetlands and 17 in palustrine wetlands. Nesting sites we...

Fipronil, a phenyl-pyrazole insecticide, is often used in rice (Oryza sativa L.) production agriculture, with elevated runoff concentrations and loads having potential toxicological effects on downstream aquatic environments. This study evaluated two species of aquatic plants-broadleaf cattail (Typha latifolia L.) and powdery alligator-flag (Thalia dealbata Fraser ex Roscoe)-placed in series ag...

The knowledge of selenium (Se) partitioning in treatment wetlands and wetland vegetation management are essential for long-term effective operation of constructed wetlands treating Se-laden agricultural tile-drainage in central California. In this field study, samples from different compartments of treatment wetlands were collected and the vegetation change in each wetland cell was examined fou...

Abstract Nutrient enrichment in lakes due to municipal wastewater discharge and agricultural run-off leads excessive growth of algae aquatic macrophytes leading their altered trophic states. This paper presents the effect wastewater-induced nutrient on anatomical changes elemental profiling three common freshwater India’s Central Gangetic Plain. It is observed that with increase state, biominer...