English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Forest restoration of mined bauxite areas: it is ne cessary the use of exotic grasses for initial soil cover? Mining profoundly alters natural ecosystems and, al though the recovery of these areas is required by law, it is still a major technical c hallenge. Generally, recovery strategies involve the distribution of surface forest soil, pl anting of exotic grasses to cover the ground and the planting of exotic and/or native trees. How ever, the sowing of exotic grasses may restrict native species regeneration, therefore, co ntext specific diagnosis must be carried out to determine the actual need of using such technique. In this context, the aim of this study was to evaluate whether the use of exotic grasses for init ial soil covering in the recovery of tropical forests in areas of bauxite mining is necessary, as well as if the restored community has potential to return to the pre-disturbance conditio ns. Therefore, we use a case study of recovery of bauxite exploration in the Atlantic For est region of Brazil in Pocos de Caldas, Minas Gerais, where chronosequences of two methods of restoration of bauxite mines were compared restoration without exotic grasses (Rs) and forest restoration with exotic grasses (Rc) taking up stretches of native forest ecosyst em as a reference. We collected data on tree community structure (grass cover, canopy cover, bas al area, and density of individuals CBH ≥ 3.1 cm and height ≥ 130 cm (1 class) and density of individuals DAP <3 .1 cm and height ≥ 50 cm (class 2) and composition (richness, diversity, evenness and richness and percentage of species by dispersion syndrome). The successional p ath was analyzed by linear regression. In class 1, the method of forest restoration without e xotic grasses (Rs) achieved better results than Rc in key parameters for forest establishment, such as exotic grass cover, canopy cover, richness and diversity. The Rs method also had simi lar results to Rc in several parameters, despite being represented by younger communities. B oth methods showed trends toward the parameters values found in reference ecosystem, bu t Rs method, if it remain the current way, can reach these values more quickly, which reduces maintenance costs and management. Such evidence shows that the use of exotic grasses for initial covering of mined areas is not necessary in projects aimed at forest restoration o f mining areas, as these hinder the restoration of forest dynamics. Additionally, we pr oved to be possible to recover the bauxite mined areas with more ambitious ecological goals, a iming at the return of pre-disturbance conditions.

Restauração florestal de áreas mineradas de bauxita: é necessário o uso de gramíneas exóticas para o recobrimento inicial do solo?