Journal of Insect Science, Journal Year: 2024, Volume and Issue: 24(4)

Published: July 1, 2024

World food supplies rely on pollination, making this plant-animal relationship a highly valued ecosystem service. Bees pollinate flowering plants in rangelands that constitute up to half of global terrestrial vegetation. Livestock grazing is the most widespread rangeland use and can affect insect pollinators through herbivory. We examined management effects bee abundance other grazed idle sagebrush central Montana, USA. From 2016 2018, we sampled lands enrolled rest-rotation grazing, unenrolled lands, geographically separate without for over decade. Bare ground covered twice as much area (15% vs. 7) with litter (12% 24) than regardless enrollment. Bee were 2-3 times more prevalent 2016-2017. In bees similar among idled during an unseasonably wet cool summer depressed pollinator catches; captures secondary was treatments 2 3 study years. Ground-nesting (94.6% total abundance) driven by periodic maintained bare kept accumulations check. contrast, provided fewer nesting opportunities mostly solitary, ground-nesting genera requiring unvegetated spaces reproduction. Managed supported higher evolved bison eastern edge ecosystem. Our findings suggest disturbance may enhance habitat, benefit from livestock.

Language: Английский