ABSTRACT

The quantity and quality of plant residue deposited on the soil and the size of the canopy are conditioning factors for edaphic fauna, mainly due to changes in temperature, soil cover and the supply of food resources. Thus, according to their genetic characteristics, plant species can influence the abundance and diversity of soil invertebrates in different ways. Therefore, the objective of this work was to evaluate the influence of different provenances of Spondia tuberosa on the edaphic mesofauna community. The experimental area is located in the municipality of Contendas do Sincorá, Bahia, Brazil, and is composed of five different provenances of Spondias tuberosa. Mesofauna sampling was performed using the modified Berlese-Tullgren funnel method. The provenances did not influence the total density or richness of the mesofauna. However, it was possible to observe changes in the diversity indexes and in the relationship between mesofauna and dendrometric variables. The Lontra-Minas Gerais provenance (L) provided greater evenness between the mesofauna groups among the studied provenances. Together with América Dourada-Bahia (AD), this provenance favored the occurrence of detritivorous organisms, while Livramento de Brumado-Bahia (LB) and Macaúbas-Bahia (M) provide more conducive microhabitats to the occurrence of a greater number of the edaphic mesofauna groups. Thus, L and AD can optimize biological processes such as organic matter decomposition and nutrient mineralization, while L, LB and M can be more favorable to the overall biological health of the soil. These differences should be taken into account when choosing Spondias tuberosa provenances, since they can determine changes in biological processes and soil function, especially in semi-arid climate conditions.

摘要

沉积在土壤上的植物残渣的数量和质量以及冠层的大小是食道动物的调节因素，主要是由于温度，土壤覆盖率和食物资源供应的变化。因此，根据其遗传特征，植物物种可以不同方式影响土壤无脊椎动物的丰度和多样性。因此，这项工作的目的是评估不同来源的Spondia tuberosa对深海中型动物群落的影响。实验区域位于巴西巴伊亚州的Contendas doSincorá自治市，由五种不同的Spondias tuberosa种源组成。。使用改良的Berlese-Tullgren漏斗法进行中型动物取样。种源不影响中型动物的总密度或丰富度。但是，有可能观察到多样性指数的变化以及中型动物与树状变量之间的关系。Lontra-Minas Gerais产地（L）在研究的种源中的中型动物群之间提供了更大的均匀性。与AméricaDourada-Bahia（AD）一起，有利于有害生物的发生，而Livramento de Brumado-Bahia（LB）和Macaúbas-Bahia（M）为更多的中层中生动物的发生提供了更有利的微生境。组。因此，L和AD可以优化生物过程，例如有机物分解和营养物矿化，而L，LB和M可以更有利于土壤的整体生物健康。选择时应考虑这些差异马铃薯种源，因为它们可以确定生物过程和土壤功能的变化，尤其是在半干旱气候条件下。