采矿结束 10 年后重新植被的采矿后地点和邻近未采矿地点的真菌生物群

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Emanuelle B. Cardoso, Paulo P. Júnior, Tomás G. R. Veloso, Thuany C. Jordão, Karl Kemmelmeier, Marliane de Cássia S. da Silva, Eduardo G. Pereira, Maria Catarina Megumi Kasuya
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引用次数: 0

摘要

土壤真菌生物群是生物多样性的重要组成部分,虽然在采矿后的恢复过程中被忽视,但它们在土壤中发挥着关键作用,有助于采矿后环境中的植被重建过程和土壤稳定性。在可能的情况下,评估恢复进展需要将其与参照地进行比较,参照地最好与采矿前的特征相同或相似。在此,我们调查了与采矿前特征相似的参照地点和采矿后重新植被地点在退役和重新植被 10 年后的雨季和旱季的霉菌生物群。我们将代谢条形码方法与真菌操作分类单元的功能特征相结合,并利用孢子形态学和菌根定殖对传统的丛枝菌根真菌(AMF)调查技术对我们的结果进行了补充。我们的研究结果表明,尽管所研究的两个地点气候条件相同、空间位置邻近,而且相互之间没有障碍物,但真菌群落组成在这两个地点之间的差异要大于所评估的年内差异。不同地点的真菌生物群组成从门类到属都存在差异。不过,两个地点的预测营养模式(病原菌、嗜渍菌和共生菌)是相同的。所有被评估植物的根部都有 AMF 定殖,AMF 孢子密度相似。虽然两个地点都有许多真菌分类群,但两个地点之间的空间连通性不足以实现真菌群落结构和组成的等同。化学和物理土壤特性的差异可能塑造了真菌群落。这项研究强调了从采矿环境中理解真菌群落的必要性,并考虑了景观连通性的概念。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mycobiota of revegetated post‐mining and adjacent unmined sites 10 years after mining decommissioning
Although overlooked in post‐mining rehabilitation, soil mycobiota constitute an important fraction of biodiversity, playing pivotal functions in soil that contribute to the revegetation process and soil stability in post‐mining environments. Evaluating the rehabilitation progress requires comparing it, when possible, with a reference site, preferably identical or similar to pre‐mining characteristics. Here, we investigated the mycobiota from a reference site, comparable to pre‐mining characteristics, and a post‐mining revegetated site 10 years after decommissioning and revegetation, during rainy and dry seasons. We combined the metabarcoding approach with functional traits from fungal operational taxonomic units and complemented our results with traditional techniques for arbuscular mycorrhizal fungi (AMF) surveys using spore morphology and mycorrhizal colonization. Our findings demonstrated that the composition of the fungal community exhibited more differences between the two sites studied than the intra‐annual periods assessed, even though the sites were under the same climatic conditions, spatially nearby, and without barriers between them. The mycobiota composition displayed differences between sites from phylum to genus levels. However, the predictive trophic modes (pathotrophs, saprotrophs, and symbionts) were equivalent in the two sites. All roots of plants assessed had AMF colonization, and AMF spore densities were similar. While many fungal taxa were present at both sites, the spatial connectivity between both sites was insufficient for equivalence of fungal community structure and composition. Differences in chemical and physical soil characteristics may have shaped the fungal communities. This study highlights the need to comprehend the fungal community from mining environments, considering concepts of landscape connectivity.
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
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