Plant species or flower colour diversity? Identifying the drivers of public and invertebrate response to designed annual meadows
Plant species or flower colour diversity? Identifying the drivers of public and invertebrate response to designed annual meadows
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DOI：
10.1016/j.landurbplan.2018.08.017
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发表时间：
2018-12-01
影响因子：
9.1
通讯作者：
Warren, Philip
中科院分区：
文献类型：
--
作者：
Hoyle, Helen;Norton, Briony;Warren, Philip
越来越多的证据表明，在公共绿地中引入城市草地作为舒适割草的替代品，对生物多样性和人类福祉都有好处。因此，更好地了解推动人类和野生动物反应的草甸特征至关重要。我们通过评估公众和无脊椎动物对八种不同的年度草地混合物的反应来解决这个问题，这些混合物由两个级别的植物物种多样性和两个级别的颜色多样性定义，于2015年4月在英国卢顿的一个城市公园播种。在2015年7月、8月和9月，向来访的公众进行了现场问卷调查。通过同期视觉调查和一次扫网调查（2015年8月）评估了无脊椎动物的反应。花色多样性对人类的审美反应以及熊蜂和食蚜蝇等传粉昆虫的反应都有影响。然而，植物物种多样性并不是人类反应的驱动力，有证据表明人们使用颜色多样性作为评估物种多样性的线索。植物物种多样性确实影响了一些无脊椎动物，在物种多样性低的草甸中某些类群的丰度较高。我们的研究结果表明，如果播种草地的优先事项是最大限度地提高人类的审美享受和可观察到的无脊椎动物，特别是传粉动物的丰富性和多样性，城市绿色基础设施的管理人员应优先考虑高的植物物种多样性的高花色多样性的混合。种植开花较晚的非本地物种，如金鸡菊（平原金鸡菊），可以延长草地对人们的吸引力，并为传粉者提供资源，因此是有益的。
There is increasing evidence of the benefits of introducing urban meadows as an alternative to amenity mown grass in public greenspaces, both for biodiversity, and human wellbeing. Developing a better understanding of the meadow characteristics driving human and wildlife response is therefore critical. We addressed this by assessing public and invertebrate response to eight different annual meadow mixes defined by two levels of plant species diversity and two levels of colour diversity, sown in an urban park in Luton, UK, in April 2015. On-site questionnaires with the visiting public were conducted in July, August and September 2015. Invertebrate responses were assessed via contemporaneous visual surveys and one sweep net survey (August 2015). Flower colour diversity had effects on human aesthetic response and the response of pollinators such as bumblebees and hoverflies. Plant species diversity, however, was not a driver of human response with evidence that people used colour diversity as a cue to assessing species diversity. Plant species diversity did affect some invertebrates, with higher abundances of certain taxa in low species diversity meadows. Our findings indicate that if the priority for sown meadows is to maximise human aesthetic enjoyment and the abundance and diversity of observable invertebrates, particularly pollinators, managers of urban green infrastructure should prioritise high flower colour diversity mixes over those of high plant species diversity. Incorporating late-flowering non-native species such as Coreopsis tinctoria (plains coreopsis) can prolong the attractiveness of the meadows for people and availability of resources for pollinators and would therefore be beneficial.