The present study describes the influence of extensive agriculture on the concentrations of As, Cr, Cu, Cd, Se, Pb and Zn in sediments and in the aquatic plant Veronica anagallis-aquatica. The investigation, spanning 4 years, was conducted on three watercourses in Slovenia (Pšata, Lipsenjščica and Žerovniščica) flowing through agricultural areas. The different sampling sites were chosen on the basis of the presence of different activities in these regions: dairy farming, stock raising and extensive agriculture. The concentrations of the selected elements in sediments and V. anagallis-aquatica were below the literature background values. The distribution of the selected elements among different plant parts (roots, stems and leaves) were also investigated. The majority of the studied elements, with the exception of Zn and Cu, were accumulated mainly in root tissues.

本研究描述了粗放农业对沉积物和水生植物Veronica anagallis-aquatica中As，Cr，Cu，Cd，Se，Pb和Zn浓度的影响。这项为期4年的调查是在斯洛文尼亚流经农业区的三个水道（Pšata，Lipsenjščica和Žerovniščica）上进行的。根据这些地区存在的不同活动来选择不同的采样地点：奶牛养殖，畜牧业和粗放农业。沉积物和Anagallis-aquatica中选定元素的浓度低于文献背景值。还研究了所选元素在不同植物部位（根，茎和叶）之间的分布。除锌和铜外，大多数研究元素主要积累在根组织中。