Enhancing the diversity of breeding invertebrates within field margins of intensively managed grassland: effects of alternative management practices

Severe declines in biodiversity have been well documented for many taxonomic groups due to intensification of agricultural practices. Establishment and appropriate management of arable field margins can improve the diversity and abundance of invertebrate groups; however, there is much less research on field margins within grassland systems. Three grassland field margin treatments (fencing off the existing vegetation “fenced”; fencing with rotavation and natural regeneration “rotavated” and; fencing with rotavation and seeding “seeded”) were compared to a grazed control in the adjacent intensively managed pasture. Invertebrates were sampled using emergence traps to investigate species breeding and overwintering within the margins. Using a manipulation experiment, we tested whether the removal of grazing pressure and nutrient inputs would increase the abundance and richness of breeding invertebrates within grassland field margins. We also tested whether field margin establishment treatmen...

农业集约化经营已被大量文献证实，会导致众多分类类群的生物多样性严重下降。耕地田缘的营建与合理管理，可提升无脊椎动物类群的多样性与种群丰度；但目前针对草地生态系统内田缘的相关研究仍较为匮乏。本研究在邻近的集约化经营牧场中设置了三种草地田缘处理组：保留原生植被并围封（下称"围封组"）、围封结合旋耕与自然更新（下称"旋耕组"）、围封结合旋耕与人工播种（下称"播种组"），并以放牧的对照样地作为参照。研究采用羽化诱捕器（emergence trap）对田缘内的无脊椎动物进行采样，以探究其在田缘中的繁殖与越冬情况。本研究通过控制性操控实验，验证移除放牧压力与养分输入是否可提升草地田缘内繁殖型无脊椎动物的种群丰度与物种丰富度。此外，本研究还验证了田缘营建处理……