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Native bee communities vary across three prairie ecoregions due to land use, climate, sampling method and bee life history traits
Insect Conservation and Diversity ( IF 3.5 ) Pub Date : 2020-06-02 , DOI: 10.1111/icad.12427
Monica Kohler 1 , Ashton Sturm 2 , Cory S. Sheffield 3 , Cameron N. Carlyle 2 , Jessamyn S. Manson 1, 4
Affiliation  

  1. Recent evidence indicates that many native bee species are in decline due to the cumulative effects of multiple human‐induced stressors such as habitat loss, pesticide exposure, pathogens, and climate change. These declines have raised interest in the status of native bees and in developing tools that support management of bee communities and the ecosystem services they deliver.
  2. Native bees were surveyed using pan traps and netting over 2 years at 68 locations in croplands and rangelands across three ecological regions of Alberta's prairies – the Grassland, Parkland, and Boreal Natural Regions – to evaluate patterns in bee communities in response to disturbance and ecological gradients.
  3. Bee community composition was different across land use and ecoregions. While several cavity‐nesting species had a strong association with rangelands, cavity‐nesting bees tended to be less common in croplands and may be more sensitive to loss of rangeland habitat.
  4. Response patterns in overall bee abundance and richness were driven by interactions between region and land use, highlighting the need for regional studies to understand how bee communities respond to these factors.
  5. This survey is one of the first to sample the response of bee communities to landscape disturbance across a broad spatial area of the Canadian prairies. Large‐scale compositional studies are essential for understanding the status of native bee communities, and for monitoring long‐term trends over time. We recommend subsequent coordinated surveys using standardised methods across broad spatial scales.


中文翻译:

由于土地利用,气候,采样方法和蜜蜂生活史的特点,三个草原生态区的本地蜜蜂群落各不相同

  1. 最新证据表明,由于多种人为压力源的累积影响,例如栖息地丧失,农药暴露,病原体和气候变化,许多本地蜜蜂物种正在减少。这些下降引起了人们对本地蜂的地位以及开发支持蜜蜂社区及其所提供的生态系统服务的管理工具的兴趣。
  2. 在阿尔伯塔省大草原的三个生态区域(草原,大草原和北方自然地区)的农田和牧场的68个地点,使用锅陷阱和网进行了2年以上的本地蜜蜂调查,以评估蜜蜂群落对干扰和生态梯度的响应方式。
  3. 土地利用和生态区域的蜜蜂群落组成不同。尽管有几种巢穴物种与牧场有很强的联系,但巢穴蜜蜂在农田中不常见,对牧场栖息地的丧失更敏感。
  4. 整个蜂的丰度和丰富度的响应模式是由区域与土地利用之间的相互作用驱动的,这突出表明需要进行区域研究以了解蜂群如何应对这些因素。
  5. 这项调查是第一批抽样调查蜜蜂群落对加拿大大草原上广阔空间区域内景观干扰的反应之一。大规模的成分研究对于理解当地蜂群的状况以及监测长期趋势是必不可少的。我们建议随后在广泛的空间范围内使用标准化方法进行协调调查。
更新日期:2020-06-02
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