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Distribution and pollination services of wild bees and hoverflies along an altitudinal gradient in mountain hay meadows
Ecology and Evolution ( IF 2.3 ) Pub Date : 2021-07-21 , DOI: 10.1002/ece3.7924 Kevin Baumann 1 , Julia Keune 1 , Volkmar Wolters 1 , Frank Jauker 1
Ecology and Evolution ( IF 2.3 ) Pub Date : 2021-07-21 , DOI: 10.1002/ece3.7924 Kevin Baumann 1 , Julia Keune 1 , Volkmar Wolters 1 , Frank Jauker 1
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Extensively managed and flower-rich mountain hay meadows, hotspots of Europe's biodiversity, are subject to environmental and climatic gradients linked to altitude. While the shift of pollinators from bee- to fly-dominated communities with increasing elevation across vegetation zones is well established, the effect of highland altitudinal gradients on the community structure of pollinators within a specific habitat is poorly understood. We assessed wild bee and hoverfly communities, and their pollination service to three plant species common in mountain hay meadows, in eighteen extensively managed yellow oat grasslands (Trisetum flavescens) with an altitudinal gradient spanning approx. 300 m. Species richness and abundance of pollinators increased with elevation, but no shift between hoverflies and wild bees (mainly bumblebees) occurred. Seedset of the woodland cranesbill (Geranium sylvaticum) increased with hoverfly abundance, and seedset of the marsh thistle (Cirsium palustre) increased with wild bee abundance. Black rampion (Phyteuma nigrum) showed no significant response. The assignment of specific pollinator communities, and their response to altitude in highlands, to different plant species underlines the importance of wild bees and hoverflies as pollinators in extensive grassland systems.
中文翻译：
山地干草草甸野生蜜蜂和食蚜蝇沿海拔梯度的分布和授粉服务
广泛管理且花朵丰富的山地干草草地是欧洲生物多样性的热点，受到与海拔相关的环境和气候梯度的影响。虽然随着植被带海拔的升高，传粉媒介从蜜蜂主导的群落转向苍蝇主导的群落，但高地海拔梯度对特定栖息地内传粉媒介群落结构的影响却知之甚少。我们评估了野生蜜蜂和食蚜蝇群落，以及它们对山地干草草甸中常见的三种植物物种的授粉服务，这些植物物种分布在 18 个粗放管理的黄燕麦草原（ Trisetum flavescens ），海拔梯度跨越约 100 米。 300米。物种丰富度和传粉媒介的丰富度随着海拔的升高而增加，但食蚜蝇和野生蜜蜂（主要是熊蜂）之间没有发生变化。林地鹤嘴鹬 ( Geranium sylvaticum ) 的种子数量随食蚜蝇数量的增加而增加，而沼泽蓟 ( Cirsium palustre ) 的种子数量则随野蜂数量的增加而增加。黑藻（ Phyteuma nigrum ）没有表现出明显的反应。特定传粉昆虫群落的分配及其对高地海拔和不同植物物种的响应强调了野生蜜蜂和食蚜蝇作为广泛草原系统中传粉昆虫的重要性。
更新日期：2021-08-16
中文翻译：
山地干草草甸野生蜜蜂和食蚜蝇沿海拔梯度的分布和授粉服务
广泛管理且花朵丰富的山地干草草地是欧洲生物多样性的热点，受到与海拔相关的环境和气候梯度的影响。虽然随着植被带海拔的升高，传粉媒介从蜜蜂主导的群落转向苍蝇主导的群落，但高地海拔梯度对特定栖息地内传粉媒介群落结构的影响却知之甚少。我们评估了野生蜜蜂和食蚜蝇群落，以及它们对山地干草草甸中常见的三种植物物种的授粉服务，这些植物物种分布在 18 个粗放管理的黄燕麦草原（ Trisetum flavescens ），海拔梯度跨越约 100 米。 300米。物种丰富度和传粉媒介的丰富度随着海拔的升高而增加，但食蚜蝇和野生蜜蜂（主要是熊蜂）之间没有发生变化。林地鹤嘴鹬 ( Geranium sylvaticum ) 的种子数量随食蚜蝇数量的增加而增加，而沼泽蓟 ( Cirsium palustre ) 的种子数量则随野蜂数量的增加而增加。黑藻（ Phyteuma nigrum ）没有表现出明显的反应。特定传粉昆虫群落的分配及其对高地海拔和不同植物物种的响应强调了野生蜜蜂和食蚜蝇作为广泛草原系统中传粉昆虫的重要性。
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