When beggars are choosers-How nesting of a solitary bee is affected by temporal dynamics of pollen plants in the landscape

Wild bees are declining in intensively farmed regions worldwide, threatening pollination services to flowering crops and wild plants. To halt bee declines, it is essential that conservation actions are based on a mechanistic understanding of how bee species utilize landscapes. We aimed to tease apart how foraging resources in the landscape through the nesting season affected nesting and reproduction of a solitary bee in a farmland region. We investigated how availability of floral resources and potentially resource‐rich habitats surrounding nests affected nest provisioning and reproduction in the solitary polylectic bee Osmia bicornis. The study was performed in 18 landscape sectors dominated by agriculture, but varying in agricultural intensity in terms of proportion of organic crop fields and seminatural permanent pastures. Pasture‐rich sectors contained more oak (Quercus robur), which pollen analysis showed to be favored forage in the early season. More oaks ≤100 m from nests led to ...,
Persson_etal_2018_EcolEvol_Osmia_tot_reprod3
Data for analyses of the nesting population and reproductive output of Osmia bicornis, 2008, Scania county, Sweden.

Persson_etal_2018_EcolEvol_Osmia_buildspeed_20171215
Data for analyses of Osmia bicornis nest building speed.

Persson_etal_2018_EcolEvol_Osmia_triptimes_20171214_trunc1800s
Data for analyses of Osmia bicornis pollen foraging trip duration.
 
Persson_etal_2018_EcolEvol_Osmia_pollen_fig3.xlsx
 
Data on pollen use by Osmia bicornis - figure 3 in the 2018 published paper.
, See paper for methods decription.,

全球集约化农业区域的野生蜂种群正持续衰退，对显花作物与野生植物的传粉服务构成严重威胁。若要遏制蜂类种群下降趋势，基于机制性理解蜂类物种如何利用景观格局开展保护行动至关重要。本研究旨在厘清筑巢季内的觅食资源如何影响农田区域泛食性独居蜂的筑巢与繁殖行为。我们针对泛食性独居蜂凹唇壁蜂（Osmia bicornis），探究了巢穴周边的花资源可获得性及潜在的高资源丰度生境如何作用于其筑巢饲喂与繁殖表现。本研究在18个以农业为主导的景观单元中开展，这些单元的农业集约化程度存在差异，具体体现为有机农田与半自然永久牧场的占比不同。牧场占比高的景观单元拥有更多的夏栎（Quercus robur），花粉分析显示夏栎是该蜂早期活动期的偏好蜜粉源。巢穴周边100米范围内的夏栎数量越多，则……

- Persson_etal_2018_EcolEvol_Osmia_tot_reprod3：瑞典斯科讷县2008年凹唇壁蜂筑巢种群与繁殖产出的分析数据。
- Persson_etal_2018_EcolEvol_Osmia_buildspeed_20171215：凹唇壁蜂筑巢速度相关分析数据。
- Persson_etal_2018_EcolEvol_Osmia_triptimes_20171214_trunc1800s：凹唇壁蜂花粉觅食往返时长的分析数据。
- Persson_etal_2018_EcolEvol_Osmia_pollen_fig3.xlsx：凹唇壁蜂花粉利用相关数据——对应2018年发表论文中的图3。
详见论文以获取实验方法描述。