Field margin floral enhancements increase pollinator diversity at the field edge but show no consistent spillover into the crop field: a meta‐analysis,Insect Conservation and Diversity

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Field margin floral enhancements increase pollinator diversity at the field edge but show no consistent spillover into the crop field: a meta‐analysis
Insect Conservation and Diversity ( IF 3.2 ) Pub Date : 2020-10-06 , DOI: 10.1111/icad.12454
Jorge Zamorano _{1,

2} , Ignasi Bartomeus ₃ , Audrey A. Grez ₂ , Lucas Alejandro Garibaldi _{4,

5}

Affiliation

Conventional intensification of agriculture has reduced the availability of resources for pollinators, reducing their diversity and affecting plant pollination, both in natural habitats and croplands. Field margin floral enhancements such as flower strips or restored field margins could counteract these negative effects.
The approaches to assess the success of these management measures generally evaluate separately the pollinator response at the edge and within the crop, as proxies for pollinator conservation and pollination services, respectively.
We performed a meta‐analysis to understand the influence of field margin floral enhancements on the abundance and richness of pollinators at the edge and within the field, and on crop yield.
We estimated 137 effect sizes from 40 studies, all from the northern hemisphere. Overall, the field margin floral enhancements increased the abundance and richness of pollinators at the field edge but had no consistent effect in the interior of the crop fields. Few studies evaluated crop yield, and in these studies no effects were observed.
These results suggest that field margin floral enhancements can constitute a positive conservation action for pollinators but not necessarily associated with pollination ecosystem service.

中文翻译：

田间边缘花艺增强增加了田间边缘传粉媒介的多样性，但未显示出一致的溢出到作物田间：荟萃分析

传统的农业集约化减少了传粉媒介的资源可得性，减少了传粉媒介的多样性，并影响了自然生境和农田中的植物授粉。田间边缘的花卉增强效果，例如花条或恢复的田间边缘，可以抵消这些负面影响。
评估这些管理措施成功与否的方法通常分别评估作物边缘和作物内部的传粉媒介响应，分别作为传粉媒介保护和传粉服务的代理。
我们进行了荟萃分析，以了解田间边缘花艺增强对田间边缘和田间传粉媒介的丰度和丰度以及对作物产量的影响。
我们从40项研究中估计了137种效应大小，全部来自北半球。总体而言，田间边缘花的增强增加了田间边缘传粉者的丰度和丰富度，但对农作物内部没有一致的影响。很少有研究评估农作物的产量，在这些研究中未观察到任何影响。
这些结果表明，田间边缘花卉的增强可以为传粉媒介构成积极的保护作用，但不一定与授粉生态系统服务有关。

更新日期：2020-11-18

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