Does agri-environment scheme participation in England increase pollinator populations and crop pollination services?
Does agri-environment scheme participation in England increase pollinator populations and crop pollination services?
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DOI：
10.1016/j.agee.2021.107755
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发表时间：
2021-11-18
影响因子：
6.6
通讯作者：
Breeze, Tom D.
中科院分区：
文献类型：
--
作者：
Image, Mike;Gardner, Emma;Breeze, Tom D.
农业环境计划是指土地所有者（通常与政府）签订自愿协议，为环境保护和自然保护目标管理农业土地的方案。以前在当地规模的工作表明，这些功能可以提供额外的花卉和筑巢资源，以支持野生传粉者，这可能会间接增加花卉访问附近的作物。然而，整个计划对这一重要的生态系统服务的影响以前从未在全国范围内进行过研究。关注四个野生传粉者公会（地面筑巢熊蜂，树上筑巢熊蜂，地面筑巢孤蜂和洞穴筑巢孤蜂），我们使用了最先进的，基于过程的空间模型来研究2016年英格兰各地农业环境计划的参与与这些公会的预测丰度及其对四种授粉依赖作物的访问率之间的关系（油菜、菜豆、果园水果和草莓）。我们的模型预测，显着增加的国家人口的地面筑巢熊蜂和地面筑巢独居蜜蜂已经发生在响应计划。其他行会的人口没有显著增加，这可能反映了计划中没有很好地满足专业筑巢资源的需求。我们预测，由于计划干预，国家层面对依赖传粉媒介的作物的访问量不会在统计上显着增加，但确实预测一些局部地区大黄蜂对晚春开花作物的访问量会显着增加。缺乏任何显着的变化，在本赛季以外的作物开花的访问可能是由于低提供的筑巢资源相对于花卉资源的计划干预和低的整体参与更密集的耕作景观相结合。我们建议未来的计划更加重视筑巢资源的提供以及花卉资源的提供，更好地满足特定物种的需求，并促进更多连续的半自然栖息地，以更好地支持孤独的蜜蜂访问。
Agri-environment schemes are programmes where landholders enter into voluntary agreements (typically with governments) to manage agricultural land for environmental protection and nature conservation objectives. Previous work at local scale has shown that these features can provide additional floral and nesting resources to support wild pollinators, which may indirectly increase floral visitation to nearby crops. However, the effect of entire schemes on this important ecosystem service has never previously been studied at national scale. Focusing on four wild pollinator guilds (ground-nesting bumblebees, tree-nesting bumblebees, ground-nesting solitary bees, and cavity-nesting solitary bees), we used a state-of-the-art, process-based spatial model to examine the relationship between participation in agri-environment schemes across England during 2016 and the predicted abundances of these guilds and their visitation rates to four pollinator dependent crops (oilseed rape, field beans, orchard fruit and strawberries). Our modelling predicts that significant increases in national populations of ground-nesting bumblebees and ground-nesting solitary bees have occurred in response to the schemes. Lack of significant population increases for other guilds likely reflects specialist nesting resource requirements not wellcatered for in schemes. We do not predict statistically significant increases in visitation to pollinator-dependent crops at national level as a result of scheme interventions but do predict some localised areas of significant increase in bumblebee visitation to crops flowering in late spring. Lack of any significant change in visitation to crops which flower outside this season is likely due to a combination of low provision of nesting resource relative to floral resource by scheme interventions and low overall participation in more intensively farmed landscapes. We recommend future schemes place greater importance on nesting resource provision alongside floral resource provision, better cater for the needs of specialised species and promote more contiguous patches of semi-natural habitat to better support solitary bee visitation.