Flower resource and land management drives hoverfly communities and bee abundance in seminatural and agricultural grasslands.
Flower resource and land management drives hoverfly communities and bee abundance in seminatural and agricultural grasslands.
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DOI：
10.1002/ece3.3303
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发表时间：
2017-10
影响因子：
2.6
通讯作者：
Forman DW
中科院分区：
文献类型：
--
作者：
Lucas A;Bull JC;de Vere N;Neyland PJ;Forman DW
授粉是一项关键的生态系统服务，适当的管理，特别是在农业系统中，对于维持授粉者行会的多样性至关重要。然而，管理建议往往侧重于维持植物群落，假设相关的无脊椎动物种群将持续。我们测试了植物群落、花卉资源和土壤水分是否会影响威尔士（英国）植物丰富的自然和植物贫乏的农业草原群落中的食蚜蝇（食蚜蝇科）丰度和物种丰富度。并将其与两个Hyattera属Bombus和Lasioglossum进行了比较。环境变量之间的相互作用进行了测试，使用广义线性模型，和hoverfly群落组成采用典型对应分析。草地类型之间的食蚜蝇丰度、物种丰富度或蜜蜂丰度没有差异。在未改良的草地上，旋蝇丰度、物种丰富度和花卉丰富度之间存在正相关。然而，这是不明显的，在农业改良草地，可能反映在这些栖息地固有的低花资源，或存在的植物物种与低或相对难以接近的花蜜资源。土壤含水量和食蚜蝇丰度或物种丰富度之间没有关联。农业改良和花卉资源量的多少影响着该地区的蝇类群落组成。与半水生幼虫的蜻蜓物种与两个自然和农业湿草地，可能是因为本地化的幼虫栖息地。尽管没有差异，在hoverfly丰富度和物种丰富度，不同的hoverfly社区与沼泽草地，农业改良沼泽草地，和未改良的干草原，但不与改良的干草原。草地植物群落不能作为传粉昆虫群落的替代。草地管理的目标应该是最大限度地利用传粉者的食物资源，以及维持植物群落。保留积水的地面可能会增加半水生幼虫的食蚜蝇的数量。
Pollination is a key ecosystem service, and appropriate management, particularly in agricultural systems, is essential to maintain a diversity of pollinator guilds. However, management recommendations frequently focus on maintaining plant communities, with the assumption that associated invertebrate populations will be sustained. We tested whether plant community, flower resources, and soil moisture would influence hoverfly (Syrphidae) abundance and species richness in floristically‐rich seminatural and floristically impoverished agricultural grassland communities in Wales (U.K.) and compared these to two Hymenoptera genera, Bombus, and Lasioglossum. Interactions between environmental variables were tested using generalized linear modeling, and hoverfly community composition examined using canonical correspondence analysis. There was no difference in hoverfly abundance, species richness, or bee abundance, between grassland types. There was a positive association between hoverfly abundance, species richness, and flower abundance in unimproved grasslands. However, this was not evident in agriculturally improved grassland, possibly reflecting intrinsically low flower resource in these habitats, or the presence of plant species with low or relatively inaccessible nectar resources. There was no association between soil moisture content and hoverfly abundance or species richness. Hoverfly community composition was influenced by agricultural improvement and the amount of flower resource. Hoverfly species with semiaquatic larvae were associated with both seminatural and agricultural wet grasslands, possibly because of localized larval habitat. Despite the absence of differences in hoverfly abundance and species richness, distinct hoverfly communities are associated with marshy grasslands, agriculturally improved marshy grasslands, and unimproved dry grasslands, but not with improved dry grasslands. Grassland plant community cannot be used as a proxy for pollinator community. Management of grasslands should aim to maximize the pollinator feeding resource, as well as maintain plant communities. Retaining waterlogged ground may enhance the number of hoverflies with semiaquatic larvae.
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影响因子：
2.2
作者：
Dworschak, Kai;Bluethgen, Nico
通讯作者：
Bluethgen, Nico
影响因子：
56.9
作者：
Garibaldi, Lucas A.;Steffan-Dewenter, Ingolf;Klein, Alexandra M.
通讯作者：
Klein, Alexandra M.
影响因子：
6.6
作者：
Connelly, Heather;Poveda, Katja;Loeb, Gregory
通讯作者：
Loeb, Gregory
影响因子：
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作者：
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Evans, Douglas
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4.8
作者：
Dicks, LV;Corbet, SA;Pywell, RF
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Pywell, RF