Effects of higher-tier agri-environment scheme on the abundance of priority farmland birds
Effects of higher-tier agri-environment scheme on the abundance of priority farmland birds
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DOI：
10.1111/acv.12386
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发表时间：
2018-06-01
影响因子：
3.4
通讯作者：
Peach, W. J.
中科院分区：
文献类型：
--
作者：
Walker, L. K.;Morris, A. J.;Peach, W. J.
农业环境计划（AES）是扭转欧洲农田生物多样性普遍下降的主要政策机制。我们评估了 AES 土地管理对鸟类数量的影响，这些鸟类的数量因农业集约化而减少。 AES 涉及在整个农场部署一揽子野生动物友好型土地管理方案，覆盖平均 7% 的耕作面积。该研究在英国三个地区进行，重点关注受保护的物种和更广泛的农田鸟类，包括英国政府的农田鸟类指标（FBI）。作为国家鸟类监测计划的一部分，AES 农场鸟类丰度的变化与更广泛的养殖景观中测量的变化进行了比较。 17 个优先物种中的 12 个以及 FBI 表明，至少一个地区的 AES 农场的丰度发生了更积极的变化。 8 个物种在至少一个区域表现出对 AES 管理的持续反应，8 个物种在至少一个区域表现出暂时的丰度增加。在连续的潮湿和寒冷的夏季期间，关键的 AES 选项大规模失败后，对 AES 管理的临时响应出现了，并且涉及已知依赖于这些选项提供的栖息地的物种。为了抵消更广泛的农业农村中 FBI 物种每年 2.3-4.1% 的持续下降，我们估计 26-33% 的 FBI 种群需要接受 AES 类型的管理。这项研究证明了 AES 土地管理在大幅提高优先农田鸟类丰度方面的潜力，并强调需要能够适应多变天气条件影响的选项包。
Agri-environment schemes (AES) are the main policy mechanism available for reversing the widespread declines of European farmland biodiversity. We assessed the impact of AES land management on the abundance of bird species whose populations have declined as a consequence of agricultural intensification. The AES involved the deployment of a whole-farm package of wildlife-friendly land management options covering an average of 7% of the farmed area. The study was conducted across three English regions and focused on species of conservation concern and on a wider suite of farmland birds comprising the UK Government's Farmland Bird Indicator (FBI). Changes in avian abundance on AES farms were compared with those measured across the wider farmed landscape as part of a national bird monitoring scheme. Twelve out of 17 priority species, and the FBI, showed more positive changes in abundance on AES farms in at least one region. Eight species exhibited sustained responses to AES management in at least one region, and eight species exhibited a temporary enhancement in abundance in at least one region. Temporary responses to AES management followed a large scale failure of key AES options to establish during successive wet and cold summers, and involved species known to depend on the habitats provided by these options. In order to offset ongoing declines of FBI species in the wider farmed countryside of 2.3-4.1% per annum, we estimate 26-33% of FBI populations would need to be subject to AES-type management. This study demonstrates the potential for AES land management to substantially enhance the abundance of priority farmland birds and highlights the need for option packages that are resilient to the impacts of variable weather conditions.