Pesticides in fluvial wetlands catchments under intensive agricultural activities
A survey on pesticides (73 compounds) in the Bay St. François wetland and its catchment (part of the wetlands of Lake St. Pierre area [St. Lawrence River, Québec]) was achieved in 2006. The metabolites as well as the active ingredients of pesticides (11 compounds) were detected in the wetland and it...
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| Veröffentlicht in: | The Science of the total environment 2008-10, Vol.404 (1), p.182-195 |
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| creator | Poissant, Laurier Beauvais, Conrad Lafrance, Pierre Deblois, Christian |
| description | A survey on pesticides (73 compounds) in the Bay St. François wetland and its catchment (part of the wetlands of Lake St. Pierre area [St. Lawrence River, Québec]) was achieved in 2006. The metabolites as well as the active ingredients of pesticides (11 compounds) were detected in the wetland and its catchment. This wetland ecosystem was active in the degradation of agricultural pesticides (e.g., atrazine). The measured pesticides were individually below the criteria for aquatic species in natural water, except chlorpyrifos. Overall, the pesticides lost from agricultural field towards the streams were <
1% of the quantity applied. The environmental fates of the pesticides were found to vary according to the size of the watershed. Over large catchments, half-life times were important in terms of global loss from the agricultural lands to wetlands whereas over small catchments, soil organic carbon/water distribution coefficient (
Koc) was an important term for pesticides losses to water system since half-life times were not limiting factors. |
| doi_str_mv | 10.1016/j.scitotenv.2008.05.030 |
| format | Article |
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1% of the quantity applied. The environmental fates of the pesticides were found to vary according to the size of the watershed. Over large catchments, half-life times were important in terms of global loss from the agricultural lands to wetlands whereas over small catchments, soil organic carbon/water distribution coefficient (
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Agricultural agricultural land agricultural watersheds Agriculture Agronomy. Soil science and plant productions Applied sciences Biological and medical sciences Canada Continental surface waters Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics environmental fate Environmental Monitoring - methods Exact sciences and technology Fresh Water - chemistry Fundamental and applied biological sciences. Psychology Industrial Waste - analysis Losses from field Natural water pollution Pesticides Pesticides - analysis pollutants Pollution Pollution, environment geology Soil and water pollution Soil science streams Water Pollutants, Chemical - analysis Water treatment and pollution Wetlands Wetlands impacts |
| title | Pesticides in fluvial wetlands catchments under intensive agricultural activities |
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