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Soil seedbank: Old methods for new challenges in agroecology?
Annals of Applied Biology ( IF 2.2 ) Pub Date : 2020-07-05 , DOI: 10.1111/aab.12619
Inès Mahé 1 , Stéphane Cordeau 2 , David A. Bohan 2 , Damien Derrouch 2 , Fabrice Dessaint 2 , Dominique Millot 2 , Bruno Chauvel 2
Affiliation  

The weed soil seedbank is of interest in agroecosystems as a major source of weed infestation in fields and as a reservoir of plant and seed‐feeder diversity. A seedbank is a characteristic of annual plants and has been the focus of numerous studies, as it reflects the past aboveground vegetation and is the reservoir of the future vegetation. Therefore, it potentially can be used to evaluate the past, present and future annual weed communities. The goal of this paper was to provide guidelines to help researchers to do a weed seedbank survey. Through a qualitative review of 60 weed seedbank articles, we investigate why and how the seedbank has been studied in agronomy. It shows that seedbank studies have been performed to address the following four major objectives: (a) the assessment of weed management practices on weed communities; (b) the relationship between seedbank and aboveground vegetation; (c) the study of composition and diversity of seedbank in a given area; and, (d) the quantification of seedbank as a food resource for wildlife. Because the analysis highlighted a wide range of methodologies to estimate the seedbank, we critically reviewed them. We show that the selected methodology strongly affects the seedbank estimate. Nevertheless, in our sample of research articles, the analysis revealed that the choice of the methodology was not always justified in terms of achieving a particular scientific goal, but was often determined by the resources available for the experiment (e.g., workload). While studying the soil seedbank remains of interest for scientists (proved by the amount of recent publications), it is time consuming and requires considerable botanical skill. Innovative methods of estimation are scarce and novel methodological developments are needed to increase the quality and reliability of the data obtained.

中文翻译:

土壤种子库:农业生态新挑战的旧方法?

杂草土壤种子库在农业生态系统中引起人们的兴趣,因为它是田间杂草侵扰的主要来源,并且是植物和种子饲养者多样性的储存库。种子库是一年生植物的特征,并且已成为众多研究的重点,因为它反映了过去的地上植被,并且是未来植被的储存库。因此,它可以潜在地用于评估过去,现在和将来的年度杂草群落。本文的目的是提供指南,以帮助研究人员进行杂草种子库调查。通过对60种杂草种子库文章的定性审查,我们研究了为什么以及如何在农艺学方面研究种子库。结果表明,已经完成了种子库研究,以实现以下四个主要目标:(a)对杂草群落的杂草管理实践进行评估;(b)种子库与地上植被之间的关系;(c)研究特定地区种子库的组成和多样性;(d)量化种子库作为野生生物的粮食资源。由于分析强调了估计种子库的广泛方法,因此我们对其进行了严格审查。我们表明所选的方法会强烈影响种子库的估计。但是,在我们的研究文章样本中,分析表明,方法的选择并非总是可以实现特定的科学目标,而是经常由可用于实验的资源(例如工作量)决定的。虽然研究土壤种子库仍然是科学家们感兴趣的(最近的出版物数量证明),但是这很耗时,并且需要相当的植物学技能。
更新日期:2020-07-05
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