Complex relationship between soil fungi and conservation value assessments in boreal forests.

IF 5.2 1区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Julia Kyaschenko, Louis Mielke, Mari Jönsson, Anne-Maarit Hekkala, Simon Kärvemo, Jörgen Sjögren, Karina E Clemmensen, Joachim Strengbom
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引用次数: 0

Abstract

Large-scale industrial forestry is a threat to biodiversity and imposes long-lasting changes to many forested biomes. Preserving forests as reserves is an important component of the strategy for safeguarding forest biodiversity. Yet, the selection of forests of high biodiversity value is usually based on proxies (i.e., subsets of aboveground habitat characteristics) rather than on direct assessments of species occurrences. This approach is based on the assumption that the diversity and community composition of all organism groups are well represented by the assessed habitat characteristics. We investigated how conservation value, assessed according to common practices based on aboveground habitat heterogeneity, corresponded to the abundance, richness, and community composition of 12 taxonomic and ecological groups of soil fungi across northern and southern Swedish forests. Overall, the assessed conservation value reflected the abundance, diversity, and community composition of deadwood-associated saprotrophs well, likely because they depend directly on the availability of the structures that the assessment is based on. However, the conservation assessment value failed to capture the overall variability for most of the soil-dwelling fungal guilds. Although the assessed value was positively associated with the diversity of ectomycorrhizal fungi, root-associated Ascomycota, and saprotrophic Basidiomycota in the southern region, no such association was evident in the northern region. Soil fertility was the best predictor of the variation in community composition in all fungal guilds. The relative abundance and diversity of most saprotrophic guilds increased as soil fertility increased, whereas root-associated guilds decreased as soil fertility increased. Current methods for assessing conservation value captured only specific subsets of soil fungi, and the predictability of capturing fungal diversity varied depending on the region. To more comprehensively preserve soil fungi, assessment methods should incorporate additional environmental parameters, especially those linked to fungal community composition, such as soil fertility.

北方森林土壤真菌与保护价值评价的复杂关系
大规模工业林业对生物多样性构成威胁,并对许多森林生物群落造成长期变化。保护森林作为保护区是保护森林生物多样性战略的重要组成部分。然而,选择具有高生物多样性价值的森林通常是基于代用物(即地上生境特征的子集),而不是基于物种发生的直接评估。这种方法是基于这样一个假设,即所有生物类群的多样性和群落组成都能很好地代表所评估的生境特征。我们调查了瑞典北部和南部森林中12个土壤真菌分类和生态类群的丰度、丰富度和群落组成与保护价值的关系。总体而言,评估的保护价值很好地反映了枯木相关腐养生物的丰度、多样性和群落组成,可能是因为它们直接依赖于评估所依据的结构的可用性。然而,保护评估值未能捕获大多数土壤真菌行会的整体变异性。虽然南方地区的评估值与外生菌根真菌、根相关子囊菌群和腐坏担子菌群的多样性呈正相关,但在北方地区没有明显的相关性。土壤肥力是各真菌群落组成变化的最佳预测因子。大多数腐殖质行会的相对丰度和多样性随着土壤肥力的增加而增加,而根相关行会随着土壤肥力的增加而减少。目前评估保护价值的方法只捕获了土壤真菌的特定子集,并且捕获真菌多样性的可预测性因地区而异。为了更全面地保护土壤真菌,评估方法应纳入额外的环境参数,特别是与真菌群落组成有关的环境参数,如土壤肥力。
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来源期刊
Conservation Biology
Conservation Biology 环境科学-环境科学
CiteScore
12.70
自引率
3.20%
发文量
175
审稿时长
2 months
期刊介绍: Conservation Biology welcomes submissions that address the science and practice of conserving Earth's biological diversity. We encourage submissions that emphasize issues germane to any of Earth''s ecosystems or geographic regions and that apply diverse approaches to analyses and problem solving. Nevertheless, manuscripts with relevance to conservation that transcend the particular ecosystem, species, or situation described will be prioritized for publication.
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