Fungal community dynamics in a hyper-arid ecosystem after 7 and 47 years of petroleum contamination

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Monitoring and Assessment Pub Date : 2024-11-18 DOI:10.1007/s10661-024-13387-3

Varsik Martirosyan, Ilan Stavi, Tirza Doniger, Itaii Applebaum, Chen Sherman, May Levi, Yosef Steinberger

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引用次数: 0

Abstract

This study investigates the impact of crude oil contamination on the fungal community dynamics in the Evrona Nature Reserve, situated in Israel’s hyper-arid Arava Valley. The reserve experienced petroleum-hydrocarbon-spill pollution at two neighboring sites in 1975 and 2014. The initial contamination was left untreated, providing a unique opportunity to compare its effects to those of the second contamination event. In 2022, soil samples were collected from both contaminated areas and nearby clean (control) sites, 47 and 7 years after the spills. The taxonomic diversity of fungal community and functional guilds, as well as various properties of the soil, were analyzed. We focused on three functional groups within fungal communities: saprotrophs, symbiotrophs, and pathotrophs. The results revealed a significant decrease in number of fungal species in the contaminated samples over time. Consequently, prolonged effect of crude oil-contaminated soils can facilitate the development of a distinct fungal community, which has adapted to the conditions of oil contamination. This study aims to elucidate the dynamics of fungal communities in oil-contaminated soils, contributing to a better understanding of their behavior and adaptation in such environments.

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石油污染 7 年和 47 年后超干旱生态系统中的真菌群落动态。

本研究调查了原油污染对以色列超干旱阿拉瓦河谷埃夫罗纳自然保护区真菌群落动态的影响。该保护区于 1975 年和 2014 年在两个邻近地点遭受了石油烃泄漏污染。最初的污染没有得到处理，这为将其影响与第二次污染事件的影响进行比较提供了难得的机会。2022 年，在泄漏发生 47 年和 7 年后，分别从污染区和附近的清洁（对照）地点采集了土壤样本。我们对真菌群落和功能区的分类多样性以及土壤的各种特性进行了分析。我们重点研究了真菌群落中的三个功能群：嗜渍菌、嗜共生菌和嗜病菌。结果显示，随着时间的推移，受污染样本中的真菌种类数量明显减少。因此，原油污染土壤的长期影响会促进适应石油污染条件的独特真菌群落的发展。本研究旨在阐明石油污染土壤中真菌群落的动态，从而有助于更好地了解真菌在此类环境中的行为和适应性。

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来源期刊

Environmental Monitoring and Assessment 环境科学-环境科学

CiteScore

4.70

自引率

6.70%

发文量

1000

审稿时长

7.3 months

期刊介绍： Environmental Monitoring and Assessment emphasizes technical developments and data arising from environmental monitoring and assessment, the use of scientific principles in the design of monitoring systems at the local, regional and global scales, and the use of monitoring data in assessing the consequences of natural resource management actions and pollution risks to man and the environment.