RESUMO -A fauna edáfica é sensível às perturbações ambientais e sua resposta pode indicar o estado de conservação do solo em locais com diferentes usos e manejos. O objetivo deste estudo foi avaliar a diversidade de grupos da fauna invertebrada e sua relação com atributos edáficos em três usos da terra: Floresta Nativa (FN), Reflorestamento de Pinus (RP) e Campo Nativo Melhorado (CNM), no município de Lages, SC. A amostragem consistiu em três pontos distanciados entre si por 30 metros, estabelecidos ao longo de transectos, em cada sistema. Avaliaram-se os atributos físicos e químicos do solo e da abundância e diversidade da fauna, coletada pelos métodos Pitfall traps e Tropical Soil Biology and Fertility. Os dados foram submetidos à análise estatística multivariada. Identificaram-se 1.210 organismos do solo, pertencentes a 17 grupos taxonômicos, sendo, os mais representativos Collembola e Coleoptera, independente do uso. A FN apresentou maior riqueza e diversidade da fauna edáfica em comparação aos outros sistemas. Os maiores teores de matéria orgânica e pH demonstraram relação com Oligochaeta, Enchytraeidae e Collembola. A umidade do solo contribuiu para explicar a abundância dos grupos em CNM e FN. Contudo, a fauna mostrou respostas diferentes na sua distribuição para cada uso da terra, logo, as variáveis ambientais podem limitar o estabelecimento dos invertebrados mais frequentes no solo. Os sistemas FN e CNM apresentaram melhores condições dos atributos edáficos e por isso maior biodiversidade, quando comparados ao RP.Palavras-chave -biodiversidade, conservação do solo, sistemas de manejo. ABSTRACT -The soil fauna is sensitive to environmental disturbances, their response may indicate the state of soil conservation in different uses and management practices. The aim of this study was to evaluate the diversity of invertebrate fauna groups and its relationship with edaphic attributes in three land uses: Native Forest (NF), Pinus Reforestation (PR) and Native Improved Grassland (NIM), in Lages, SC -Brazil. Sampling consisted of three points distanced each other 30 meters, established along transects, on each system. The evaluations were physical and chemical soil attributes and the abundance and diversity of fauna, collected by methods Pitfall traps and Tropical Soil Biology and Fertility. The data were subjected to multivariate statistical analysis. They identified 1.210 soil organisms belonging to 17 taxonomic groups. The most representative groups were Collembola and Coleoptera, independent of the use. The NF has introduced greater richness and diversity of soil fauna in comparison to other LUS. The highest levels of organic matter and soil pH showed a relationship with Oligochaeta, Enchytraeidae and Collembola. The values of moisture contributed to explain the greater abundance of groups in NIM and NF. However, the soil fauna showed different responses in its distribution to each land use, being that the environmental variables may limit the establishment of most frequent belowground invertebrates. NF syste...

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Mineral coal extraction in Santa Catarina State (Brazil) Carboniferous Basin has degraded the local ecosystem, restricting the use of its areas. One of the biggest environmental impacts in the mining areas is the uncontrolled disposal of waste and sterile mining with high concentrations of pyrite, which in the presence of air and water is oxidized promoting the formation of acid mine drainage (AMD). These contaminants can be leached into water resources, restrict the use of water, soil and cause threats to fauna and flora. This study aimed to characterize these areas as to the content of Cd, Pb, Ni and Zn metals in the tailings and waste resulting from coal mining and to survey the species of ferns and lycophytes present. Wastes and tailing samples and specimens of ferns and lycophytes were collected in 23 landfills in six municipalities in the region and in four underlying areas used as controls. Chemical and physical analyses (pH in water and pH in KCl, Ca, Mg, P, K, Na, Mn, Fe, Al, clay and OM contents) were carried out and the total contents of heavy metals Cd, Pb were determined, Ni and Zn. Sampling of ferns and lycophytes was carried out by walking. The levels of heavy metals, Cd, Ni and Zn were below the prevention concentrations established by CONAMA Resolution 420/2009. Pb levels were above prevention values ​​in four landfills. Sixteen species of ferns and one lycophyte were found, with hemicryptophytes the most frequent and helophytes the most adapted to the environment. Of the species found, Pteridium esculentum (G. Forst.) Cockayne, Pityrogramma calomelanos (L.) Link and Telmatoblechnum serrulatum (Rich.) Perrie, DJ Ohlsen & Brownsey demonstrated resistance to degraded and contaminated environments with Pb, which may constitute an alternative for projects monitoring and environmental recovery.