Influence of eucalyptus development under soil fauna

Abstract

<jats:p>Abstract In the implantation of forests, soil tillage can affect the soil fauna, but over the years, it is possible that forest development can recompose the biological indicators of soil quality. So, the aim of this study was to evaluate the influence of different periods of eucalyptus development on community of edaphic fauna. The experiment was carried out in forest areas in the municipality of Ametista do Sul, RS. The Experimental design was completely randomized with 6 treatments, once 4 of the treatments were with different ages of the Eucalyptus grandis (two, four, six and eight years after trasnplant – YAT); plus 2 control treatments: Native Forest and Soil Naked, with 7 collection points. To sample the edaphic fauna, it was used traps such as PROVID. Also, the edaphic fauna was sampled at the depth of 0-5 cm for the quantification of mites. It was carried out the counting of individuals at the level of order and family for the mites, the means of the groups were submitted to the Tukey test and comparisons by Orthogonal Contrasts and calculated indices of Biodiversity: Margalef Richness, Simpson dominance, Shannon diversity and Pielou uniformity. The results showed lower abundance of individuals in Naked soil, while the Native Forest presented the best Biodiversity indices. With eight years of implantation of eucalyptus there was recovered the biological quality of the soil expressed by the population of springtails. The population of oribatídeos mites increased expressively from the six years of implantation of eucalyptus.</jats:p>

Caracterização de artrópodes edáficos em duas áreas com diferentes coberturas vegetais na região central do Rio Grande do Sul

“…Apesar dos índices H' e J' não apresentarem diferença significativa entre as duas áreas, eles foram ligeiramente maiores na área BM. Diferentemente, Boeno et al (2019) encontraram maiores valores desses índices de diversidade em áreas de mata nativa, quando comparado com áreas com predominância de uma única espécie (eucalipto). A baixa diversidade expressa pelo H' é consequência da alta ocorrência de colêmbolos e coleópteros, que exerceram domínio sobre os demais grupos taxonômicos (corresponderam ao total de 63,3% e 62,9% dos indivíduos das áreas BM e RF, respectivamente).…”

Fauna epiedáfica associada a fragmentos florestais de Araucaria angustifolia em diferentes condições edafoclimáticas no estado do Paraná

“…Esse fato denota a importância dos ecossistemas de florestas nativas como um reservatório da fauna de formigas e de outros invertebrados (Lutinski et al, 2008). Quanto à ordem Diptera, quarto grupo mais abundante, apesar de não se ter conhecimento de sua função ao nível do solo em sua fase adulta, são abundantes em áreas florestais (Brancher e Roza-Gomes, 2012;Derengoski et al, 2019;Boeno et al, 2020). .…”

Changes in Land Use through Eucalyptus Plantations Impact Soil Fauna Communities in Brazilian Savannas

“…These changes alter nutrient cycles due to modifications above and below ground. The changes in vegetation composition, nutrient inputs, and outputs lead to changes in the composition and diversity of soil fauna [10,11]. In this context, eucalyptus monoculture has long been questioned about its effects on soil biodiversity, as it can alter the diversity and distribution of soil fauna species due to the reduction of variation in litter composition, which exerts a strong influence in the soil fauna communities, especially on endemic organisms that are particularly vulnerable to ecosystem disturbances [12,13].…”

“…Also, soil management directly affects soil fauna by the use of heavy machinery to soil tillage [14,15]. Meantime, studies suggest that eucalyptus commercial stands, compared to other monoculture systems, cause less impact for soil fauna communities [3,10,16].…”