Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences, Faculty of Science, Radboud University, Nijmegen, the Netherlands; Buijs Agro-Services, Schuurhoven 19, 6721SM Bennekom, the Netherlands.
Department of Environmental Science, Radboud Institute for Biological and Environmental Sciences, Faculty of Science, Radboud University, Nijmegen, the Netherlands.
Sci Total Environ. 2024 Nov 1;949:175030. doi: 10.1016/j.scitotenv.2024.175030. Epub 2024 Jul 25.
The aim of this study was to explore the relationship between pesticide contamination at 16 locations in 14 Dutch nature conservation areas and the abundance of Coleoptera (among which dung beetles) in excrements of grazing cattle. A wide spectrum of pesticides was measured in soil, vegetation and excrements of cattle, obtained from all locations. In the fresh dung pats sampled for chemical analysis, beetle numbers were counted and beetle species were identified. In total, 31 different pesticides (including some metabolites) were detected: 14 in fresh excrements, 17 in soil and 20 in vegetation. Total pesticide concentrations in soil, vegetation and excrements varied between 2.6 and 200 μg kg dry matter. In vegetation, the most frequently encountered classes of pesticides (including some of their metabolites) were fungicides (9), herbicides (4) and insecticides (6). The total number of Coleoptera beetles in dung pats correlated negatively with the total concentration of insecticides in vegetation (Kendall's τ -0.501 at p < 0.05). The total concentrations of herbicides and fungicides were not statistically significant correlated with Coleoptera beetle numbers in the dung pats. Yet, the concentration of one single herbicide, viz. chlorpropham in vegetation correlated significantly negative with Coleoptera counts (Kendall's τ -0.603 at p < 0.01).
本研究旨在探讨 14 个荷兰自然保护区 16 个地点的农药污染与放牧牛粪便中鞘翅目（包括蜣螂）丰度之间的关系。在所有地点均从土壤、植被和牛粪便中测量了广泛的农药。在用于化学分析的新鲜粪便样本中，计数了甲虫数量并鉴定了甲虫种类。总共检测到 31 种不同的农药（包括一些代谢物）：新鲜粪便中 14 种，土壤中 17 种，植被中 20 种。土壤、植被和粪便中的总农药浓度在 2.6 至 200μg kg 干物质之间变化。在植被中，最常遇到的农药类别（包括其中一些代谢物）是杀菌剂（9）、除草剂（4）和杀虫剂（6）。粪斑中鞘翅目甲虫的总数与植被中杀虫剂的总浓度呈负相关（肯德尔 τ -0.501，p < 0.05）。除草剂和杀菌剂的总浓度与粪斑中的鞘翅目甲虫数量无统计学意义相关。然而，一种单一的除草剂，即氯普罗法姆在植被中的浓度与鞘翅目计数呈显著负相关（肯德尔 τ -0.603，p < 0.01）。
