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Trends in Pesticide Concentrations in Streamsof the Western United States, 1993-20051

Overview of attention for article published in Journal of the American Water Resources Association, December 2010
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1 tweeter

Citations

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22 Mendeley
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Title
Trends in Pesticide Concentrations in Streamsof the Western United States, 1993-20051
Published in
Journal of the American Water Resources Association, December 2010
DOI 10.1111/j.1752-1688.2010.00507.x
Pubmed ID
Authors

Henry M. Johnson, Joseph L. Domagalski, Dina K. Saleh

Abstract

Trends in pesticide concentrations for 15 streams in California, Oregon, Washington, and Idaho were determined for the organophosphate insecticides chlorpyrifos and diazinon and the herbicides atrazine, s-ethyl diproplythiocarbamate (EPTC), metolachlor, simazine, and trifluralin. A parametric regression model was used to account for flow, seasonality, and antecedent hydrologic conditions and thereby estimate trends in pesticide concentrations in streams arising from changes in use amount and application method in their associated catchments. Decreasing trends most often were observed for diazinon, and reflect the shift to alternative pesticides by farmers, commercial applicators, and homeowners because of use restrictions and product cancelation. Consistent trends were observed for several herbicides, including upward trends in simazine at urban-influenced sites from 2000 to 2005, and downward trends in atrazine and EPTC at agricultural sites from the mid-1990s to 2005. The model provided additional information about pesticide occurrence and transport in the modeled streams. Two examples are presented and briefly discussed: (1) timing of peak concentrations for individual compounds varied greatly across this geographic gradient because of different application periods and the effects of local rain patterns, irrigation, and soil drainage and (2) reconstructions of continuous diazinon concentrations at sites in California are used to evaluate compliance with total maximum daily load targets.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Ireland 1 5%
France 1 5%
Unknown 20 91%

Demographic breakdown

Readers by professional status Count As %
Student > Master 7 32%
Researcher 4 18%
Student > Ph. D. Student 4 18%
Other 2 9%
Student > Bachelor 2 9%
Other 3 14%
Readers by discipline Count As %
Environmental Science 8 36%
Agricultural and Biological Sciences 6 27%
Computer Science 1 5%
Business, Management and Accounting 1 5%
Earth and Planetary Sciences 1 5%
Other 3 14%
Unknown 2 9%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 March 2012.
All research outputs
#8,176,664
of 13,044,080 outputs
Outputs from Journal of the American Water Resources Association
#523
of 713 outputs
Outputs of similar age
#65,843
of 119,684 outputs
Outputs of similar age from Journal of the American Water Resources Association
#2
of 2 outputs
Altmetric has tracked 13,044,080 research outputs across all sources so far. This one is in the 23rd percentile – i.e., 23% of other outputs scored the same or lower than it.
So far Altmetric has tracked 713 research outputs from this source. They receive a mean Attention Score of 4.3. This one is in the 18th percentile – i.e., 18% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 119,684 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 32nd percentile – i.e., 32% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 2 others from the same source and published within six weeks on either side of this one.