Soil mycobiota under managed and unmanaged forests of Nothofagus pumilio in Tierra del Fuego, Argentina

IF 1.5 4区 农林科学 Q2 FORESTRY New Zealand Journal of Forestry Science Pub Date : 2019-07-10 DOI:10.33494/NZJFS492019X53X
L. Elíades, M. Cabello, V. Pancotto, A. Moretto, Natalia A Ferreri, M. Saparrat, M. Barrera
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引用次数: 3

Abstract

Background: Management practices can modify the productivity of forests and the associated microbial diversity of soil. The soil mycobiota is considered a key factor in the ecological functions of forests. Forests of Nothofagus pumilio (Poepp. & Endl.) Krasser (Nothofagaceae) are the main source of timber and one of the most important economic resources in the province of Tierra del Fuego (Argentina). However, there is no information on the impact of forest management interventions for the soil mycobiota, which can be reliable biological indicators of disturbance.Methods: Fungi were isolated from samples of soil collected under several Nothofagus pumilio forests subjected to different types of management and periods of time since the intervention. Types of management were represented by harvested forest with a shelter wood cutting, stockpile area and control forest without intervention and the periods of time since intervention were 1, 5–10 and 50 years. Species richness, evenness and Shannon’s diversity index of the mycobiota in each condition of management were calculated. Additionally, the effect of seasonality was analysed.Results: The soil mycobiota was represented by 70 taxa. Richness and/or Shannon’s diversity index of the mycobiota between undisturbed forest and stockpile area were higher in May (autumn) than in September or November. There were no differences in mycobiota diversity between dates in the harvested forest.Conclusions: Our results indicate that the forest intervention per se did not negatively affect the soil culturable mycobiota composition of N. pumilio forests in Tierra del Fuego (Argentina).
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阿根廷火地岛Nothofagus pumilio管理和未管理森林下的土壤真菌生物群
背景:管理实践可以改变森林的生产力和相关的土壤微生物多样性。土壤真菌生物群被认为是影响森林生态功能的关键因素。Nothofagus pumilio(Poepp.&Endl.)Krasser(Nothofagaceae)的森林是火地岛省(阿根廷)的主要木材来源和最重要的经济资源之一。然而,没有关于森林管理干预措施对土壤分枝杆菌群的影响的信息,这可能是干扰的可靠生物学指标。方法:从几种不同类型的管理和干预后的时间段下采集的土壤样本中分离真菌。管理类型以采伐的森林为代表,其中包括遮蔽木材砍伐、储存区和未经干预的控制林,自干预以来的时间分别为1年、5-10年和50年。计算了不同管理条件下真菌生物群的物种丰富度、均匀度和香农多样性指数。此外,还分析了季节性的影响。结果:土壤真菌生物区系共有70个类群。5月(秋季)未受干扰的森林和储存区之间真菌生物群的丰富度和/或Shannon多样性指数高于9月或11月。在收获的森林中,不同日期的真菌生物群多样性没有差异。结论:我们的研究结果表明,森林干预本身并没有对火地岛(阿根廷)的N.pumilio森林的土壤可培养真菌生物群组成产生负面影响。
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来源期刊
CiteScore
2.20
自引率
13.30%
发文量
20
审稿时长
39 weeks
期刊介绍: The New Zealand Journal of Forestry Science is an international journal covering the breadth of forestry science. Planted forests are a particular focus but manuscripts on a wide range of forestry topics will also be considered. The journal''s scope covers forestry species, which are those capable of reaching at least five metres in height at maturity in the place they are located, but not grown or managed primarily for fruit or nut production.
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