Bacterial and Archaeal Communities Change With Intensity of Vegetation Coverage in Arenized Soils From the Pampa Biome

Granada, Camille Eichelberger; Vargas, Luciano Kayser; Lisboa, Bruno Brito; Giongo, Adriana; Martinho, Caroline Thaís; Pereira, Leandro de Mattos; Oliveira, Rafael Rodrigues de; Bruxel, Fernanda; Freitas, Elisete Maria de; Passaglia, Luciane Maria Pereira

doi:10.3389/fmicb.2019.00497

Cited by 9 publications

(4 citation statements)

References 54 publications

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“…The family Chthoniobacteraceae (phylum Verrucomicrobia) was most abundant in NS, while CLIS and LI showed abundances three times lower of this family. Granada et al (2019) related the high incidence of members of the family Chthoniobacteraceae in areas with higher levels of organic matter, as seems to be the case when comparing NS with CLIS and LI. A similar pattern was observed for the family Acidothermaceae, which was most frequent in NS than CLIS and LI.…”

Section: Discussionmentioning

confidence: 78%

Short-Term Effect in Soil Microbial Community of Two Strategies of Recovering Degraded Area in Brazilian Savanna: A Pilot Case Study

et al. 2021

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The Brazilian Cerrado is a highland tropical savanna considered a biodiversity hotspot with many endemic species of plants and animals. Over the years, most of the native areas of this biome became arable areas, and with inadequate management, some are nowadays at varying levels of degradation stage. Crop-livestock integrated systems (CLIS) are one option for the recovery of areas in degradation, improving the physicochemical and biological characteristics of the soil while increasing income and mitigating risks due to product diversification. Little is known about the effect of CLIS on the soil microbial community. Therefore, we perform this pilot case study to support further research on recovering degraded areas. The bacterial and fungal soil communities in the area with CLIS were compared to an area under moderate recovery (low-input recovering - LI) and native savanna (NS) area. Bacterial and fungal communities were investigated by 16S and ITS rRNA gene sequencing (deep rRNA sequencing). Ktedonobacteraceae and AD3 families were found predominantly in LI, confirming the relationship of the members of the Chloroflexi phylum in challenging environmental conditions, which can be evidenced in LI. The CLIS soil presented 63 exclusive bacterial families that were not found in LI or NS and presented a higher bacterial richness, which can be related to good land management. The NS area shared 21 and 6 families with CLIS and LI, respectively, suggesting that the intervention method used in the analyzed period brings microbial diversity closer to the conditions of the native area, demonstrating a trend of approximation between NS and CLIS even in the short term. The most abundant fungal phylum in NS treatment was Basidiomycota and Mucoromycota, whereas Ascomycota predominated in CLIS and LI. The fungal community needs more time to recover and to approximate from the native area than the bacterial community. However, according to the analysis of bacteria, the CLIS area behaved differently from the LI area, showing that this treatment induces a faster response to the increase in species richness, tending to more accelerated recovery. Results obtained herein encourage CLIS as a sustainable alternative for recovery and production in degraded areas.

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Section: Discussionmentioning

confidence: 78%

Short-Term Effect in Soil Microbial Community of Two Strategies of Recovering Degraded Area in Brazilian Savanna: A Pilot Case Study

et al. 2021

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“…Prokaryote species were included in part considering species identity (for aquatic species), and also as operational taxonomic units (OTUs), for soil bacteria. For soil bacteria, the studies of Beneduzi et al (2019), Girão (2019) and Granada et al (2019) were used as a basis (Supplemental Appendix S2).…”

Section: Methodsmentioning

confidence: 99%

12,500+ and counting: biodiversity of the Brazilian Pampa

Andrade¹,

Dröse²,

Aguiar³

et al. 2023

Frontiers of Biogeography

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Knowledge on biodiversity is fundamental for conservation strategies. The Brazilian Pampa region, located in subtropical southern Brazil, is neglected in terms of conservation, and knowledge of its biodiversity is fragmented. We aim to answer the question: how many, and which, species occur in the Brazilian Pampa? In a collaborative effort, we built species lists for plants, animals, bacteria, and fungi that occur in the Brazilian Pampa. We included information on distribution patterns, main habitat types, and conservation status. Our study resulted in referenced lists totaling 12,503 species (12,854 taxa, when considering infraspecific taxonomic categories [or units]). Vascular plants amount to 3,642 species (including 165 Pteridophytes), while algae have 2,046 species (2,378 taxa) and bryophytes 316 species (318 taxa). Fungi (incl. lichenized fungi) contains 1,141 species (1,144 taxa). Animals total 5,358 species (5,372 taxa). Among the latter, vertebrates comprise 1,136 species, while invertebrates are represented by 4,222 species. Our data indicate that, according to current knowledge, the Pampa holds approximately 9% of the Brazilian biodiversity in an area of little more than 2% of Brazil's total land. The proportion of species restricted to the Brazilian Pampa is low (with few groups as exceptions), as it is part of a larger grassland ecoregion and in a transitional climatic setting. Our study yielded considerably higher species numbers than previously known for many species groups; for some, it provides the first published compilation. Further efforts are needed to increase knowledge in the Pampa and other regions of Brazil. Considering the strategic importance of biodiversity and its conservation, appropriate government policies are needed to fund studies on biodiversity, create accessible and constantly updated biodiversity databases, and consider biodiversity in school curricula and other outreach activities.

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“…Ademais, a falta de cobertura vegetal, em concomitância com a degradação do solo nesse Bioma afetam o desenvolvimento das comunidades macro e microbianas, isso porque alteram a disponibilidade de nutrientes para a alimentação, além de modificarem a temperatura e a umidade do solo. Esse processo resulta em uma seleção de espécies resistentes à ambientes com baixa disponibilidade de nutrientes e reduzem a aeração do solo, constituindo áreas arenosas que acabam por possuir uma biomassa microbiana reduzida (GRANADA et al, 2019).…”

Section: Introductionunclassified

Diversidade fúngica em diferentes áreas de utilização do solo do Bioma Pampa

et al. 2023

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No sul do Brasil, juntamente com a Argentina e o Uruguai, está situado o Bioma Pampa. A diversidade fúngica presente neste local pode ser afetada pelos meios de exploração do solo, que acabam, consequentemente, influenciando as demais comunidades biológicas. O objetivo deste estudo foi realizar a comparação da diversidade fúngica em diferentes áreas de utilização do solo do Bioma Pampa. Para tanto, foram realizadas coletas de solos na cidade de Pantano Grande, situada no Rio Grande do Sul. Três diferentes áreas de utilização do solo foram amostradas: área nativa, de pastagem e de silvicultura. Os fungos do solo foram isolados por meio da técnica da diluição decimal. A identificação ocorreu por meio das observações das características macro e microscópicas. Através de métodos estatísticos, analisou-se a diversidade dos fungos e se fez a comparação da comunidade de fungos entre as áreas amostradas. Foram isolados 265 indivíduos distribuídos em nove tipos taxonômicos. As três áreas apresentaram quatro táxons em comum (Aspergillus niger, Aspergillus sp., Trichoderma sp. e Fusarium sp.), enquanto as áreas utilizadas para a pastagem foram as únicas a apresentar exclusividade na presença de um táxon (Verticillium sp.). Com isso, pôde-se concluir que o solo das áreas utilizadas para pastagem apresenta a maior biodiversidade fúngica entre as áreas estudadas, entretanto, a riqueza fúngica entre os diferentes tipos de uso do solo não apresentou diferenças.

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Bacterial and Archaeal Communities Change With Intensity of Vegetation Coverage in Arenized Soils From the Pampa Biome

Cited by 9 publications

References 54 publications

Short-Term Effect in Soil Microbial Community of Two Strategies of Recovering Degraded Area in Brazilian Savanna: A Pilot Case Study

Short-Term Effect in Soil Microbial Community of Two Strategies of Recovering Degraded Area in Brazilian Savanna: A Pilot Case Study

12,500+ and counting: biodiversity of the Brazilian Pampa

Diversidade fúngica em diferentes áreas de utilização do solo do Bioma Pampa

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