Targeted agri‐environment schemes significantly improve the population size of common farmland bumblebee species
Targeted agri‐environment schemes significantly improve the population size of common farmland bumblebee species
复制标题
有针对性的农业环境计划显着改善了常见农田熊蜂物种的种群规模
作者：
T. Wood;J. Holland;W. Hughes;D. Goulson
欧洲和北美农业实践的变化与大黄蜂（熊蜂属）的范围缩小和局部灭绝有关。已经实施了一些农业环境计划来阻止和扭转这些下降，主要围绕提供额外的饲料植物。虽然已经证明这些计划可以吸引大量的觅食大黄蜂，但目前还不清楚它们实际上在多大程度上增加了大黄蜂的数量。我们使用标准化的样带行走和分子技术来比较实施传粉者友好计划的高级管理（HLS）农场和入门级管理（ELS）对照农场之间的熊蜂种群规模。样带散步的大黄蜂丰度显着高于HLS农场比ELS农场。分子分析表明，熊蜂的最大觅食距离为566 m，B为714 m. lapidarius，B为363 m。pascuorum和799 m的B。terrestris。最大觅食范围的显着差异，发现在大黄蜂物种之间的农场类型。考虑到觅食范围的差异，B。hortorum（47 vs 13巢/km 2）和B.在HLS农场，lapidarius（45对22巢/km 2）的筑巢密度显著高于ELS农场。B在不同农场类型间差异不显著。土生蚁（88窝/km ~ 2）和B. pascuorum（32 vs 39巢/km 2）。在所有的熊蜂物种，HLS管理熊蜂巢密度有显着的积极影响。这些结果表明，有针对性的农业环境计划，增加合适的饲料的可用性可以显着增加野生熊蜂种群的规模。
Changes in agricultural practice across Europe and North America have been associated with range contractions and local extinction of bumblebees (Bombus spp.). A number of agri‐environment schemes have been implemented to halt and reverse these declines, predominantly revolving around the provision of additional forage plants. Although it has been demonstrated that these schemes can attract substantial numbers of foraging bumblebees, it remains unclear to what extent they actually increase bumblebee populations. We used standardized transect walks and molecular techniques to compare the size of bumblebee populations between Higher Level Stewardship (HLS) farms implementing pollinator‐friendly schemes and Entry Level Stewardship (ELS) control farms. Bumblebee abundance on the transect walks was significantly higher on HLS farms than ELS farms. Molecular analysis suggested maximum foraging ranges of 566 m for Bombus hortorum, 714 m for B. lapidarius, 363 m for B. pascuorum and 799 m for B. terrestris. Substantial differences in maximum foraging range were found within bumblebee species between farm types. Accounting for foraging range differences, B. hortorum (47 vs 13 nests/km2) and B. lapidarius (45 vs 22 nests/km2) were found to nest at significantly greater densities on HLS farms than ELS farms. There were no significant differences between farm type for B. terrestris (88 vs 38 nests/km2) and B. pascuorum (32 vs 39 nests/km2). Across all bumblebee species, HLS management had a significantly positive effect on bumblebee nest density. These results show that targeted agri‐environment schemes that increase the availability of suitable forage can significantly increase the size of wild bumblebee populations.
量化和比较花园和乡村栖息地的大黄蜂巢密度
影响因子：
5.7
作者：
Osborne J
通讯作者：
Osborne J