Pollen-based reconstruction reveals the impact of the onset of agriculture on plant functional trait composition,Ecology Letters

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Pollen-based reconstruction reveals the impact of the onset of agriculture on plant functional trait composition
Ecology Letters ( IF 7.6 ) Pub Date : 2022-07-11 , DOI: 10.1111/ele.14063
Annegreet Veeken ₁ , Maria J Santos ₂ , Suzanne McGowan _{1,

3} , Althea L Davies ₄ , Franziska Schrodt ₁

Affiliation

The onset of agriculture improved the capacity of ecosystems to produce food, but inadvertently altered other vital ecosystem functions. Plant traits play a central role in determining ecosystem properties, therefore we investigated how the onset of agriculture in Europe changed plant trait composition using 78 pollen records. Using a novel Bayesian approach for reconstructing plant trait composition from pollen records, we provide a robust method that can account for trait variability within pollen types. We estimate an overall four-fold decrease in plant size through agriculture and associated decreases in leaf and seed size. We show an increase in niche space towards the resource-acquisitive end of the leaf economic spectrum. Decreases in leaf phosphorus might have been caused by nutrient depletion through grazing and burning. Our results show that agriculture, from its start, has likely been gradually impacting biogeochemical cycles through altered vegetation composition.

中文翻译：

基于花粉的重建揭示了农业开始对植物功能性状组成的影响

农业的兴起提高了生态系统生产食物的能力，但无意中改变了其他重要的生态系统功能。植物性状在决定生态系统特性中起着核心作用，因此我们使用 78 种花粉记录研究了欧洲农业的开始如何改变植物性状组成。使用一种新的贝叶斯方法从花粉记录中重建植物性状组成，我们提供了一种可靠的方法，可以解释花粉类型内的性状变异性。我们估计，通过农业和相关的叶片和种子大小减少，植物大小总体减少了四倍。我们显示，利基空间向叶子经济光谱的资源获取端增加。叶磷的减少可能是由于放牧和燃烧造成的养分消耗所致。

更新日期：2022-07-11

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