Drivers of diversity and community structure of bees in an agroecological region of Zimbabwe

Worldwide bees provide an important ecosystem service of plant pollination. Climate change and land-use changes are among drivers threatening bee survival with mounting evidence of species decline and extinction. In developing countries, rural areas constitute a significant proportion of the country’s land but information is lacking on how different habitat types and weather patterns in these areas influence bee populations. This study investigated how weather variables and habitat-related factors influence the abundance, diversity, and distribution of bees across seasons in a farming rural area of Zimbabwe. Bees were systematically sampled in five habitat types (natural woodlots, pastures, homesteads, fields, and gardens) recording ground cover, grass height, flower abundance, and types, tree abundance and recorded elevation, temperature, light intensity, wind speed, wind direction, and humidity. Zero-inflated models, censored regression models, and PCAs were used to understand the ...全球范围内，蜜蜂为植物授粉提供了至关重要的生态系统服务。气候变化与土地利用变化是威胁蜜蜂生存的核心驱动因素之一，已有越来越多的研究证据表明，蜜蜂物种正持续减少甚至濒临灭绝。在发展中国家，农村区域占据国土总面积的显著比例，但目前仍缺乏相关研究阐明这些区域内不同生境类型与气象模式如何影响蜜蜂种群。 本研究以津巴布韦某农业农村区域为研究对象，探究了气象变量与生境相关因子如何影响不同季节下蜜蜂的丰度、多样性与分布格局。研究人员针对五种生境类型（天然小片林地、牧草地、宅基地、农田与园地）开展蜜蜂系统采样，同步记录了地表覆盖度、草本高度、花的丰度与种类、树木丰度，以及海拔、气温、光照强度、风速、风向与湿度等环境参数。本研究采用零膨胀模型（Zero-inflated models）、删失回归模型（Censored regression models）与主成分分析（Principal Components Analysis）等方法，以解析……