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Spatio-temporal heterogeneity differently drives the diversity of various trophic guilds of mesofauna in semi-arid oak forests
Trees ( IF 2.3 ) Pub Date : 2020-09-07 , DOI: 10.1007/s00468-020-02025-3
Mehdi Heydari , Parasto Eslaminejad , Fatemeh Valizadeh Kakhki , Majid Mirab-balou , Reza Omidipour , Demetrio Antonio Zema , Chen Ma , Manuel Esteban Lucas-Borja

Abstract

Despite the importance of mesofauna in soil formation, litter decomposition, biological cycles and growth of plants for semi-arid forest ecosystems, the effects of different woody species and seasonality on the abundance, diversity and composition of mesofauna invertebrates have been little studied. This study has evaluated the effects of woody species (trees and shrubs) on trophic guilds of abundance, diversity and composition of soil mesofauna (detritivores vs. predators) during spring and winter seasons. Moreover, the basic drivers, including microclimatic characteristics and soil properties, of abundance, diversity and composition of soil biota have been identified in semi-arid deciduous broadleaved forests. Woody species types and seasonality affected soil mesofauna abundance, diversity and composition (non-metric multidimensional scaling; NMDS). All the species were present during spring and winter and in all types of woody species, but the mesofauna abundance, diversity and composition were differently influenced by the season and woody cover. Predator abundance was affected by both species and seasonality, whereas detritivore abundance was only influenced by woody species. Detritivore and predator diversity was affected by woody species and seasonality, but not by the interaction of both factors. It has been also demonstrated that the understory of trees is more important as biodiversity hotspot for mesofauna activity compared to shrubs; moreover, the mesofauna composition (detritivores vs. predators) is driven by the seasonality and woody species. Overall, this work has demonstrated that plants and soil organisms are strictly linked to each other and aboveground and belowground communities can be powerful mutual drivers.

Graphic abstract



中文翻译:

时空异质性在半干旱橡树林中推动中生动物各种营养行会的多样性不同

摘要

尽管中型动物在半干旱森林生态系统的土壤形成,凋落物分解,生物循环和植物生长中具有重要意义,但很少研究不同木本物种和季节对中型动物无脊椎动物的丰度,多样性和组成的影响。这项研究评估了春季和冬季,木本物种(树木和灌木)对营养中行的土壤中动物的丰富度,多样性和组成(破坏性动物与掠食性动物)的影响。此外,在半干旱落叶阔叶林中,已经确定了土壤生物量丰富,多样性和组成的基本驱动力,包括微气候特征和土壤特性。木本植物的种类和季节影响土壤中动物的数量,多样性和组成(非度量多维尺度;NMDS)。所有种类均在春季和冬季出现,并且存在于所有类型的木本物种中,但是中型动物的丰度,多样性和组成受到季节和木本植物覆盖率的不同影响。捕食者的丰度受物种和季节的影响,而有害生物的丰度仅受木本物种的影响。有害生物和捕食者的多样性受木本物种和季节的影响,但不受这两个因素相互作用的影响。研究还表明,与灌木相比,林下树木作为中生动物活动的生物多样性热点更为重要。此外,中型动物区系的组成(有害生物与掠食性动物)受季节和木本植物的驱动。总体,

图形摘要

更新日期:2020-09-08
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