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dc.contributor.authorMutshekwa, Thendo.en_US
dc.contributor.authorMugwedi, Lutendo.en_US
dc.contributor.authorWasserman, Ryan John.en_US
dc.contributor.authorCuthbert, Ross N.en_US
dc.contributor.authorDondofema, Farai.en_US
dc.description.abstractGlobal contamination of freshwater ecosystems by chemical compounds, such as pesticides, may exert high pressure on biologically-driven organic matter decomposition. These pollutants may also impair the quality of organic sub strates for colonising invertebrates and reduce primary productivity by decreasing the abundance of phytoplankton. In southern Africa, increasing pesticide usage associated with macadamia plantations, in particular, presents a growing risk to freshwater ecosystems. Here, we examined macadamia (Macadamia integrifolia) leaf litter decomposition fol lowing exposure to three pesticides (i.e., Karate Zeon 10 CS (lambda-cyhalothrin), Mulan 20 AS (acetamiprid), Pyrinex 250 CS (chlorpyrifos)) used commonly in macadamia plantations, via an ex-situ microcosm approach. We examined mosquito colonisation of these microcosms as semi-aquatic macroinvertebrates which form a significant component of aquatic communities within standing waters. Macadamia leaf litter tended to decompose faster when exposed to Karate and Pyrinex pesticide treatments. Additionally, chlorophyll-a, conductivity, total dissolved solids, and pH dif fered among pesticide treatments and controls, with pesticides (Karate Zeon and Mulan) tending to reduce chlorophyll-a concentrations. Overall, pesticide treatments promoted mosquito (i.e., Culex spp.) and pupal abun dances. In terms of dominant aquatic mosquito group abundances (i.e., Anopheles spp., Culex spp.), the effect of pesti cides differed significantly among pesticide types, with Pyrinex and Mulan treatments having higher mosquitoabundances in comparison to Karate Zeon and pesticide-free treatments. These findings collectively demonstrate that common pesticides used in the macadamia plantation may exert pressure on adjacent freshwater communities by shaping leaf-litter decomposition, semi-aquatic macroinvertebrate colonisation dynamics, and chlorophyll-a.en_US
dc.relation.ispartofScience of the Total Environmenten_US
dc.subjectMosquito larvae.en_US
dc.subjectAllochthonous inputs.en_US
dc.titlePesticides drive differential leaf litter decomposition and mosquito colonisation dynamics in lentic conditions.en_US
dc.typejournal articleen_US
dc.contributor.affiliationUniversity of Vendaen_US
dc.contributor.affiliationUniversity of Vendaen_US
dc.contributor.affiliationRhodes Universityen_US
dc.contributor.affiliationSouth African Institute for Aquatic Biodiversityen_US
dc.contributor.affiliationUniversity of Vendaen_US
dc.contributor.affiliationSchool of Biology and Environmental Sciencesen_US
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