Abstract Herbaceous boundaries adjacent to arable fields can deliver ecosystem services not sufficiently provided at the field scale, as well as disservices such as increased weed pressure. The levels of services and disservices depend on the management regime implemented in these boundaries. Our study was conducted in Western France, where herbaceous boundaries of many arable fields constitute the road verge, and various mowing regimes were tested for conservation purposes. Until now, most studies of the influence of mowing regimes focused on one taxonomic group and documented contrasting results depending on the environmental context. This study aimed to compare the influence of two mowing regimes on road verges by evaluating different taxonomic groups that could potentially deliver services or disservices to adjacent arable fields. The mowing regimes used were a standard and an agro-environmental regime, the latter being characterized by one late mowing, a high mowing height and biomass removal. We monitored, during two consecutive years, seven road verges and their adjacent arable fields. Each road verge was divided into two zones of equal length, characterized by a different mowing regime. Communities of plants, flower-visiting insects and ground beetles were sampled in herbaceous boundaries and/or arable fields in the period between the mass-flowering of oilseed rape and sunflower crops. In zones where the agro-environmental mowing regime had been implemented, the average number of inflorescences and flower-visiting insects within boundaries were higher than under the standard mowing regime. However, between the two mowing regimes, no differences in weed cover within arable fields and the average number of ground beetles within boundaries and arable fields were observed. To conclude, our study suggests that in our particular environmental context, an agro-environmental mowing regime could promote pollination in adjacent arable fields without increasing weed pressure within the field.

中文翻译：

---

农业环境割草制度有利于花序和访花昆虫的数量，但不利于耕地草本边界的地甲虫

摘要 与耕地相邻的草本边界可以提供田间规模无法充分提供的生态系统服务，以及增加杂草压力等损害。服务和损害的水平取决于在这些边界内实施的管理制度。我们的研究是在法国西部进行的，许多耕地的草本边界构成了道路边缘，并且出于保护目的测试了各种割草制度。到目前为止，大多数关于割草制度影响的研究都集中在一个分类群上，并根据环境背景记录了对比结果。本研究旨在通过评估可能对相邻耕地提供服务或损害的不同分类群，比较两种割草制度对道路边缘的影响。使用的割草制度是标准和农业环境制度，后者的特点是晚割、高割草高度和生物量去除。我们连续两年监测了 7 个路缘及其相邻的耕地。每条路缘被分成两个等长的区域，以不同的割草方式为特征。在油菜和向日葵作物大量开花期间，在草本边界和/或耕地中采集了植物群落、访花昆虫和地甲虫。在实施农业环境割草制度的地区，边界内的花序和访花昆虫的平均数量高于标准割草制度下的数量。然而，在两种割草制度之间，可耕地内的杂草覆盖率以及边界和可耕地内地甲虫的平均数量均未观察到差异。总而言之，我们的研究表明，在我们特定的环境背景下，农业环境割草制度可以促进相邻耕地的授粉，而不会增加田地内的杂草压力。