Effects of Pesticides Monitored with Three Sampling Methods in 24 Sites on Macroinvertebrates and Microorganisms

R Schäfer, Vincent Pettigrove, Gavin Rose, Graeme Allinson, Adam Wightwick, Peter von der Ohe, Jeff Shimeta, Ralph Kühne, Ben Kefford

    Research output: Contribution to journalArticle

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    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 (r2 = 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.
    Original languageEnglish
    Pages (from-to)1665-1672
    Number of pages8
    JournalEnvironmental Science Technology (Washington)
    Volume45
    Issue number4
    DOIs
    Publication statusPublished - 2011

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    Pesticides
    Microorganisms
    macroinvertebrate
    microorganism
    pesticide
    Sampling
    Sediments
    sampling
    sediment
    Toxicity
    Water
    Contamination
    toxicity
    Fungicides
    Poisons
    flagellate
    fungicide
    Insecticides
    ciliate
    water

    Cite this

    Schäfer, R ; Pettigrove, Vincent ; Rose, Gavin ; Allinson, Graeme ; Wightwick, Adam ; von der Ohe, Peter ; Shimeta, Jeff ; Kühne, Ralph ; Kefford, Ben. / Effects of Pesticides Monitored with Three Sampling Methods in 24 Sites on Macroinvertebrates and Microorganisms. In: Environmental Science Technology (Washington). 2011 ; Vol. 45, No. 4. pp. 1665-1672.
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    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 (r2 = 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.",
    author = "R Sch{\"a}fer and Vincent Pettigrove and Gavin Rose and Graeme Allinson and Adam Wightwick and {von der Ohe}, Peter and Jeff Shimeta and Ralph K{\"u}hne and Ben Kefford",
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    Schäfer, R, Pettigrove, V, Rose, G, Allinson, G, Wightwick, A, von der Ohe, P, Shimeta, J, Kühne, R & Kefford, B 2011, 'Effects of Pesticides Monitored with Three Sampling Methods in 24 Sites on Macroinvertebrates and Microorganisms', Environmental Science Technology (Washington), vol. 45, no. 4, pp. 1665-1672. https://doi.org/10.1021/es103227q

    Effects of Pesticides Monitored with Three Sampling Methods in 24 Sites on Macroinvertebrates and Microorganisms. / Schäfer, R; Pettigrove, Vincent; Rose, Gavin; Allinson, Graeme; Wightwick, Adam; von der Ohe, Peter; Shimeta, Jeff; Kühne, Ralph; Kefford, Ben.

    In: Environmental Science Technology (Washington), Vol. 45, No. 4, 2011, p. 1665-1672.

    Research output: Contribution to journalArticle

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    AB - 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 (r2 = 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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