Structure of microbial soil communities in areas of restinga : a case study in a conservation unit in the Atlantic Fores
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International Society for Tropical Ecology
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Structure of microbial soil communities in areas of restinga: a case study in a conservation unit in the Atlantic Forest of the Southern Brazilian coast Antônio Lourenço Pinto1 · Andressa Danielli Canei1 · Rafael Dutra de Armas2 · Emanuela Pille da Silva1 · Anabel González Hernández1 · Admir José Giachini1 · Cláudio Roberto Fonsêca Sousa Soares1 Received: 25 March 2020 / Revised: 22 July 2020 / Accepted: 26 August 2020 © International Society for Tropical Ecology 2020
Abstract The aim of this study was to evaluate the structure of soil bacterial and fungal communities in restinga areas of the Atlantic Forest (southern Brazil) after the introduction of Pinus L. Soil samples were collected in the 0–10 cm depth from two arboreal (FR-restinga subject to flooding and DR-dry restinga) and one herbaceous (MR-restinga under marine influence) areas. In addition to these areas, soil samples were collected from FR and DR under the influence of Pinus sp. (FRPinus and DRPinus, respectively), as reference areas. The structure of bacterial and fungal communities was evaluated by PCR-DGGE. Notably, a reduction in the number of amplicons was observed in areas with presence of Pinus sp. In conclusion, the present manuscript highlighted that the allochthonous tree species (Pinus sp.) has a deleterious impact on soil microbes and affects the growth of natural vegetation in a conservation unit in the Atlantic Forest of the Southern Brazilian coast. Keywords Atlantic Forest · Bacterial communities · Fungal communities · PCR-DGGE · Pinus sp. · Reforestation The Atlantic Forest biome is one of the largest areas of tropical forest in the world, but only 15.2% of its original extent is preserved in fragments (SOS Mata Atlântica 2018). The high level of fragmentation and human density in this area, occupied by about 70% of the Brazilian population (SOS Mata Atlântica 2018), gives the Atlantic Forest the status of one of the five most important biomes threatened by extinction in the world. In addition, it is one of the most fragile environments on the planet, requiring the adoption of urgent preservation and recovery measures (SOS Mata Atlântica 2018). Coastal plain forests (restingas) are one type of vegetation in the Atlantic Forest and have suffered degradation due to economic exploitation and population invasion (Ivanauskas and Assis 2009; Vitória et al. 2019). The suppression of vegetation in the restinga causes a slow * Cláudio Roberto Fonsêca Sousa Soares [email protected] 1
Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Campus Trindade. Setor F, Bloco A, Sala 205, CEP 88040900 Florianópolis, Santa Catarina, Brazil
Centro Universitário Católico de Santa Catarina, Joinville, Brazil
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recolonization by plants, usually dominated by the small size and diversity-poor plant communities, where few species predominate (CONAMA 1999). In the state of Santa Catarina, the Rio Vermelho State Park (PAERV) is located on the coastal plain of the n
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