Moth responses to sympathetic hedgerow management in temperate farmland
Moth responses to sympathetic hedgerow management in temperate farmland
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DOI：
10.1016/j.agee.2018.10.008
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发表时间：
2019-02-01
影响因子：
6.6
通讯作者：
Jones, Gareth
中科院分区：
文献类型：
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作者：
Froidevaux, Jeremy S. P.;Broyles, Moth;Jones, Gareth
绿篱为农田中的许多物种提供了宝贵的栖息地和走廊，但如果缺乏适当的管理，可能会威胁到它们对生物多样性的好处。尽管农业环境方案(AES)关于树篱管理的处方有可能逆转过度修剪对野生动物的有害影响，但它们的有效性很少被提及。这项研究的目的是(I)评估蛾对修剪制度的反应；(Ii)调查周围景观对蛾聚集的影响。我们特别测试了目标AES建议的修剪制度的有效性，该制度在大马蹄蝙蝠(Rhinolopus Ferruequum)殖民地附近的农场实施，因为它代表了英国AES选项中最具同情心的对冲树篱管理选项。我们在20个英国农场的树篱旁用灯光诱捕器采集了成虫的微型和大型成虫样本，并将成虫分为两大类，即草/草食性和灌木/乔木性食性。我们的结果表明，减少修剪对大型蛾物种丰富度有积极的影响，对灌木/乔木食性昆虫的丰富度和物种丰富度也有积极的影响。这也让四种在英国显著减少的蛾子受益。此外，在大空间尺度(半径3.0公里)上，林地所占比例与大型蛾和草/草食性食性动物的丰富度呈正相关，而林地连通性在大、中尺度(1.5公里半径)上分别对草/草食性和灌木/乔木食性食性动物的物种丰富度有正向影响。绿篱旁的耕地对大蛾的丰富度和物种丰富度以及灌木/乔木食性的丰富度都有负面影响。总体而言，这些发现揭示了以改善马尾松栖息地为重点的定向生态系统对生物多样性的更广泛好处，以及林地在更广泛的景观中的重要性。因此，我们强烈建议采用多尺度管理方法(即从田地到景观)，通过使用适当的AES处方来保护农业景观中的飞蛾。
Hedgerows provide valuable habitats and corridors for many species in farmland, yet a lack of appropriate management may threaten their benefits to biodiversity. Although agri-environment scheme (AES) prescriptions on hedgerow management have the potential to reverse the detrimental effect of over-trimming on wildlife, their effectiveness has rarely been addressed. The aims of the study were to (i) assess moth responses to trimming regimes; and (ii) investigate the influence of the surrounding landscape on moth assemblages. We specifically tested the effectiveness of the trimming regime recommended by the targeted AES that was implemented on farms near greater horseshoe bat (Rhinolophus ferrumequinum) colonies since it represented the most sympathetic hedgerow management option among English AES options. We sampled adult micro- and macro-moths along 64 hedgerows located within 20 English farms using light traps, and classified moths into two guilds reflecting their larval food preferences, namely grass/herb- and shrub/tree-feeders. Our results suggest that reducing trimming has a positive impact on macro-moth species richness as well as on shrub/tree-feeder abundance and species richness. It also benefited four moth species that are significantly declining in Britain. Furthermore, while the proportion of woodland at a large spatial scale (3.0 km radius around the sampling sites) was positively associated with the abundance of macro-moths and grass/herb-feeders, woodland connectivity had a positive effect on the species richness of grass/herb- and shrub/tree-feeders at large and medium (1.5 km radius) scales, respectively. Both the abundance and species richness of macro-moths and the abundance of shrub/tree-feeders were negatively affected by the presence of arable fields adjacent to hedgerows. Overall, these findings reveal the wider biodiversity benefits of targeted AESs focusing on habitat improvement for R. ferrumequinum, and the importance of woodland in the wider landscape. We therefore strongly recommend implementing a multi-scale management approach (i.e. from field to landscape) through the use of adequate AES prescriptions to conserve moths in agricultural landscapes.