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Rolke, D., Jaenicke, B., Pfaender, J. and Rothe, U. 2018. Drainage ditches as important habitat for species diversity and rare species of aquatic beetles in agricultural landscapes (Insecta: Coleoptera): Beetle community in agricultural ditches. Journal of Limnology. 77, 3 (Aug. 2018). DOI:https://doi.org/10.4081/jlimnol.2018.1819.