Population responses of Daphnia magna, Chydorus sphaericus and Asellus aquaticus in pesticide contaminated ditches around bulb fields

O. Ieromina, Wjgm Peijnenburg, G. R. de Snoo, M. G. Vijver

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

The goal of this study was to investigate the effects of ambient concentrations of pesticides combined with abiotic factors on the key aquatic species Daphnia magna, Chydorus sphaericus and Asellus aquaticus by means of 21 days field exposure experiments. In situ bioassays were deployed in ditches around flower bulb fields during spring and autumn 2011-2012. The results showed that phosphate was the most variable parameter followed by pesticides expressed as toxic units, as the main factors explaining differences between sites. Variation in reproduction and growth of cladoceran D. magna was largely explained by nutrients, whereas dissolved oxygen contributed mostly to variations in reproduction of C sphaericus. Dissolved organic carbon contributed to variations in growth of the detrivore A. aquaticus. It is concluded that abiotic stressors rather than pesticides contributed significantly to the performance of aquatic invertebrates. (C) 2014 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)196-203
Number of pages8
JournalEnvironmental Pollution
Volume192
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Macroinvertebrates Ditch system Pesticides mixtures Abiotic factors In situ bioassays limitation mixtures exposure bioassay Environmental Sciences & Ecology

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