Effects of pesticides monitored with three sampling methods in 24 sites on macroinvertebrates and microorganisms.

Schäfer, RB; Pettigrove, V; Rose, G; Allinson, G; Wightwick, A; von der Ohe, PC; Shimeta, J; Kühne, R; Kefford, BJ

Effects of pesticides monitored with three sampling methods in 24 sites on macroinvertebrates and microorganisms.

Schäfer, RB Pettigrove, V Rose, G Allinson, G Wightwick, A von der Ohe, PC Shimeta, J Kühne, R Kefford, BJ

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Publication Type:: Journal Article
Citation:: Environ Sci Technol, 2011, 45 (4), pp. 1665 - 1672
Issue Date:: 2011-02-15

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Field	Value	Language
dc.contributor.author	Schäfer, RB	en_US
dc.contributor.author	Pettigrove, V	en_US
dc.contributor.author	Rose, G	en_US
dc.contributor.author	Allinson, G	en_US
dc.contributor.author	Wightwick, A	en_US
dc.contributor.author	von der Ohe, PC	en_US
dc.contributor.author	Shimeta, J	en_US
dc.contributor.author	Kühne, R	en_US
dc.contributor.author	Kefford, BJ https://orcid.org/0000-0001-6789-4254	en_US
dc.date.issued	2011-02-15	en_US
dc.identifier.citation	Environ Sci Technol, 2011, 45 (4), pp. 1665 - 1672	en_US
dc.identifier.uri	http://hdl.handle.net/10453/18026
dc.description.abstract	Grab water samples, sediment samples, and 2,2,4-trimethylpentane passive samplers (TRIMPS) were used to determine the exposure to 97 pesticides in 24 southeast Australian stream sites over 5 months. Macroinvertebrate communities and selected microorganisms (bacteria, flagellates, ciliates, amoebas, nematodes, and gastrotrichs) were sampled to detect relationships with pesticide toxicity. Sediment samples had the highest estimated toxicities in terms of toxic units (TU) for Daphnia magna (TUDM) and for Selenastrum capricornutum (TUSC). The pesticide-selective SPEARpesticides and the general SIGNAL index for macroinvertebrates exhibited negative linear relationships (r(2) = 0.67 and 0.36, respectively) with pesticide contamination in terms of log maximum TUDM (log mTUDM), suggesting macroinvertebrate community change due to pesticide exposure. Pesticide contamination was the only measured variable explaining variation in ecological quality. Variation in the densities of several microbial groups was best explained by environmental variables other than log TUs. The log mTUDM values derived from sediment concentrations were most important to establish a link with effects on macroinvertebrates, whereas log mTUDM of grab water samples had only minor contribution. Current-use insecticides and fungicides can affect macroinvertebrate communities and monitoring of sediment and continuous water sampling is needed to detect these effects.	en_US
dc.language	eng	en_US
dc.relation.ispartof	Environ Sci Technol	en_US
dc.relation.isbasedon	10.1021/es103227q	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Invertebrates	en_US
dc.subject.mesh	Pesticides	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Rivers	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Population Dynamics	en_US
dc.subject.mesh	Geologic Sediments	en_US
dc.subject.mesh	Australia	en_US
dc.title	Effects of pesticides monitored with three sampling methods in 24 sites on macroinvertebrates and microorganisms.	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	45	en_US
utslib.location.activity	United States	en_US
utslib.for	0399 Other Chemical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of the Environment
utslib.copyright.status	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	45	en_US

Abstract:

Grab water samples, sediment samples, and 2,2,4-trimethylpentane passive samplers (TRIMPS) were used to determine the exposure to 97 pesticides in 24 southeast Australian stream sites over 5 months. Macroinvertebrate communities and selected microorganisms (bacteria, flagellates, ciliates, amoebas, nematodes, and gastrotrichs) were sampled to detect relationships with pesticide toxicity. Sediment samples had the highest estimated toxicities in terms of toxic units (TU) for Daphnia magna (TUDM) and for Selenastrum capricornutum (TUSC). The pesticide-selective SPEARpesticides and the general SIGNAL index for macroinvertebrates exhibited negative linear relationships (r(2) = 0.67 and 0.36, respectively) with pesticide contamination in terms of log maximum TUDM (log mTUDM), suggesting macroinvertebrate community change due to pesticide exposure. Pesticide contamination was the only measured variable explaining variation in ecological quality. Variation in the densities of several microbial groups was best explained by environmental variables other than log TUs. The log mTUDM values derived from sediment concentrations were most important to establish a link with effects on macroinvertebrates, whereas log mTUDM of grab water samples had only minor contribution. Current-use insecticides and fungicides can affect macroinvertebrate communities and monitoring of sediment and continuous water sampling is needed to detect these effects.

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http://hdl.handle.net/10453/18026