Spatial and temporal variability in pesticide exposure downstream of a heavily irrigated cropping area: application of different monitoring techniques

O’Brien, Dominique, Lewis, Stephen, Davis, Aaron, Gallen, Christie, Smith, Rachael, Turner, Ryan, Warne, Michael, Turner, Scott, Caswell, Stewart, Mueller, Jochen F. and Brodie, Jon (2016) Spatial and temporal variability in pesticide exposure downstream of a heavily irrigated cropping area: application of different monitoring techniques. Journal of Agriculture and Food Chemistry, 64 20: 3975-3989. doi:10.1021/acs.jafc.5b04710


Author O’Brien, Dominique
Lewis, Stephen
Davis, Aaron
Gallen, Christie
Smith, Rachael
Turner, Ryan
Warne, Michael
Turner, Scott
Caswell, Stewart
Mueller, Jochen F.
Brodie, Jon
Title Spatial and temporal variability in pesticide exposure downstream of a heavily irrigated cropping area: application of different monitoring techniques
Journal name Journal of Agriculture and Food Chemistry   Check publisher's open access policy
ISSN 1520-5118
0021-8561
Publication date 2016-01-11
Year available 2016
Sub-type Article (original research)
DOI 10.1021/acs.jafc.5b04710
Open Access Status Not Open Access
Volume 64
Issue 20
Start page 3975
End page 3989
Total pages 15
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Abstract Pesticide exposure threatens many freshwater and estuarine ecosystems around the world. This study examined the temporal and spatial trends of pesticide concentrations in a waterway within an agriculturally developed dry-tropics catchment using a combination of grab and passive sampling methods over a continuous two-year monitoring program. A total of 43 pesticide residues were detected with 7 pesticides exceeding ecologically relevant water quality guidelines/trigger values during the study period and 4 (ametryn, atrazine, diuron, and metolachlor) of these exceeding guidelines for several months. The presence and concentration of the pesticides in the stream coincided with seasonal variability in rainfall, harvest timing/cropping cycle, and management changes. The sampling approach used demonstrates that the application of these complementary sampling techniques (both grab and passive sampling methods) was effective in establishing pesticide usage patterns in upstream locations where application data are unavailable.
Keyword Great Barrier Reef (GBR)
Pesticides
Herbicides
Passive sampling
Sugar cane
Irrigation
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID RRRD038
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
National Research Centre for Environmental Toxicology Publications
 
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Created: Sat, 05 Mar 2016, 02:05:09 EST by Christie Gallen on behalf of National Res Centre For Environmental Toxicology