Distribution of toxic chemicals in prairie wetlands
Prairie wetland toxicants
Frequency of toxic chemicals in surface waters in Manitoba (1995)*
Pesticides
Herbicide use in prairie Canada*
Off-site transport of residues
Atrazine transport in Nebraska streamflow (1990)*
Herbicide load in Ochre River, Manitoba (1984)*
Frequency of herbicide detection in Saskatchewan ponds (1987-89)*
Frequency of herbicide detection in Nebraska wetlands (1994)*
Total herbicides detected in Nebraska wetlands (1994)*
Frequency of pesticide detection in Saskatchewan lakes (1988-1991)*
Dissipation processes
Factors affecting wetland dissipation
Algae increases rate of photolytic decomposition of methyl parathion*
Experimental pesticide additions to prairie wetlands
Dichlofop and triallate dissipation in Saskatchewan wetlands*
Hexazinone dissipation in Delta Marsh*
Glyphosate dissipation in wetland microcosms, with and without sediment*
Bromoxynil dissipation in Delta Marsh*
Frequency of herbicide detection in Saskatchewan pond water (1985-87)*
Glyphosate dissipation from water of wetland ponds*
Glyphosate accumulation in sediment of wetland ponds*
Dissipation and metabolism of phorate in South Dakota wetland mesocosms*
Dissipation of atrazine in Kansas wetland mesocosms*
Summary
Aquatic toxicants modeling
QWASFI model
Fugacity
Input parameters
Modeled toxicant
QWAFI output for atrazine: first run
Research needs ...
Email: ggoldsb@umanitoba.ca
Home Page: www.umanitoba.ca/faculties/science/delta_marsh/pwet