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重要的农作物传粉者对人为土地利用的负面反应比其他动物少。

Important Crop Pollinators Respond Less Negatively to Anthropogenic Land Use Than Other Animals.

作者信息

Williams Jessica J, Newbold Tim, Millard Joseph, Groner Vivienne P, Pearson Richard G

机构信息

Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment University College London London UK.

Department of Life Sciences Natural History Museum London UK.

出版信息

Ecol Evol. 2024 Oct 30;14(11):e70486. doi: 10.1002/ece3.70486. eCollection 2024 Nov.

Abstract

Animal-mediated pollination is a key ecosystem service required to some extent by almost three-quarters of the leading human food crops in global food production. Anthropogenic pressures such as habitat loss and land-use intensification are causing shifts in ecological community composition, potentially resulting in declines in pollination services and impacting crop production. Previous research has often overlooked interspecific differences in pollination contribution, yet such differences mean that biodiversity declines will not necessarily negatively impact pollination. Here, we use a novel species-level ecosystem service contribution matrix along with mixed-effects models to explore how groups of terrestrial species who contribute differently to crop pollination respond globally to land-use type, land-use intensity, and availability of natural habitats in the surrounding landscape. We find that the species whose contribution to crop pollination is higher generally respond less negatively (and in some cases positively) to human disturbance of land, compared to species that contribute less or not at all to pollination. This result may be due to these high-contribution species being less sensitive to anthropogenic land conversions, which has led humans to being more reliant on them for crop pollination. However, it also suggests that there is potential for crop pollination to be resilient in the face of anthropogenic land conversions. With such a high proportion of food crops requiring animal-mediated pollination to some extent, understanding how anthropogenic landscapes impact ecological communities and the consequences for pollination is critical for ensuring food security.

摘要

动物介导的授粉是一种关键的生态系统服务,全球粮食生产中近四分之三的主要人类食用作物在一定程度上都需要这种服务。栖息地丧失和土地利用集约化等人为压力正在导致生态群落组成发生变化,可能导致授粉服务下降并影响作物产量。以往的研究往往忽视了授粉贡献中的种间差异,但这种差异意味着生物多样性下降不一定会对授粉产生负面影响。在这里,我们使用一种新颖的物种水平生态系统服务贡献矩阵以及混合效应模型,来探讨对作物授粉贡献不同的陆地物种群体如何在全球范围内对土地利用类型、土地利用强度以及周边景观中自然栖息地的可用性做出反应。我们发现,与对授粉贡献较少或根本没有贡献的物种相比,对作物授粉贡献较高的物种通常对土地的人为干扰反应较小(在某些情况下为正向反应)。这一结果可能是由于这些高贡献物种对人为土地转换不太敏感,这使得人类在作物授粉方面更加依赖它们。然而,这也表明在面对人为土地转换时,作物授粉具有恢复弹性的潜力。鉴于如此高比例的粮食作物在一定程度上需要动物介导的授粉,了解人为景观如何影响生态群落以及对授粉的影响对于确保粮食安全至关重要。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aeb9/11522614/43396d781a85/ECE3-14-e70486-g001.jpg

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