The Impact of glyphosate-containing herbicides on the biological properties of permeable pavements

Dr Stephen J Coupe, Sue Charlesworth, Fredrick Mbanaso, Ernest Nnadi

    Research output: Contribution to conferencePaperpeer-review

    Abstract

    This presentation reports on research into the impact of commonly used herbicides on the biology of Permeable Pavement Systems (PPS). Glyphosate Containing Herbicides (GCH)
    are routinely applied to urban and suburban hard surfaces for weed control, including areas with PPS.

    As PPS are a key element in the SUDS design toolbox, the simulation of GCH addition to PPS in a laboratory environment, was intended to gain information on the possible environmental impact, of routine weed control. An effective level of retention and
    bioremediation of minerals oils and the retention of heavy metals have been shown to occur in PPS over many years, but the effect of GCH on PPS microbiology is largely unknown and
    is the focus of this presentation.

    Biologically, the PPS microbiological community was shown to be capable of rapidly degrading the herbicide, as demonstrated by respirometer measurements. However, indicator organisms that are sensitive to pollution (protists) were increased in abundance but showed a decrease in biodiversity relative to PPS with oil added alone.

    Research continues into possible modifications of PPS that could improve the bioremediation of GCH. The development of a bioindicator system for herbicide pollution in SUDS may be
    possible following the highly specific response of protists to GCH pollution.
    Original languageEnglish
    Publication statusPublished - 6 Sept 2012
    EventSUDSnet Conference: Multiple benefits from surface water management - Coventry University, Coventry, United Kingdom
    Duration: 4 Sept 20126 Sept 2012

    Conference

    ConferenceSUDSnet Conference
    Country/TerritoryUnited Kingdom
    CityCoventry
    Period4/09/126/09/12

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