Fauna edáfica e serrapilheira associadas á dois fragmentos florestais na Amazônia Meridional

Castro, Djamila de Brito; Melo, Roseline da Silva; Garlet, Júliana

doi:10.33448/rsd-v11i12.34179

Cited by 2 publications

(1 citation statement)

References 15 publications

(23 reference statements)

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“…The variations in the deposition of the litter can be justified by different species and crop ages (Castro et al, 2022). Sales et al (2020) evaluating litter formation in the southern Amazon region, observed a value of 12.58 Mg ha -1 year -1 in a forest area.…”

Section: Litter Contributionmentioning

confidence: 99%

Accumulation and decomposition of cultural residues of Theobroma grandiflorum, Paullinia cupana, Bixa orellana and forest in the southern region of Amazonas

et al. 2023

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The litter deposited on the soil surface at various stages of decomposition is important for primary productivity that impacts the microbial communities and soil carbon storage. The objective of this study was to evaluate the accumulation and decomposition of cultural residues of Theobroma grandiflorum (Willd. ex. Spreng) Schum, Paullinia cupana (Mart.) Ducke, Bixa orellana L., and forest in the Amazon region. The study was carried out in the São Francisco settlement, Canutama in the south of Amazonas, in a randomized block experimental design, and the treatments consisted of four areas with different crops: 1 - P. cupana; 2 - T. grandiflorum; 3 - B. orellana; 4 - Native woodland area (forest), in time subdivided plots: 7, 15, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, and 330 days after the distribution of the bags in the field, all with four repetitions. To evaluate the contribution and fractions of litter, conical collectors were used in each area, and collections were performed monthly in the period from March 2020 to February 2021. The estimate of the decomposition rate of the litter was done by quantifying the loss of mass, using litter bags, which allow for a direct analysis of the rate of decay over time. The forest and P. cupana environments presented the highest litter production, and greater deposition when compared to environments cultivated with T. grandiflorum and B. orellana. The forest and B. orellana areas showed the highest speed of decomposition, while the opposite situation occurred under T. grandiflorum and P. cupana cultivation.

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Section: Litter Contributionmentioning

confidence: 99%

Accumulation and decomposition of cultural residues of Theobroma grandiflorum, Paullinia cupana, Bixa orellana and forest in the southern region of Amazonas

et al. 2023

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Earth Fauna in Different Environments in the Southern Amazon

Gonçalves,

Garlet

2023

RGSA

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Objective: To evaluate the soil fauna in Permanent Preservation Areas (APP) of restored and degraded watercourses, and in a preserved forest fragment, located in the municipality of Alta Floresta - MT. Theoretical framework: Forest restoration is extremely important for the reestablishment of ecosystem functions, especially in areas on the banks of water bodies. And the evaluation of this process can be carried out through soil fauna, which is considered a bioindicator of environmental quality. Methodology: The soil fauna was collected using pitfall soil traps (Provid model), installed in the three study environments along a linear transect of 70 meters, remaining in the field for 48 hours, with subsequent collection, cleaning and screening, followed by identification at order and/or family level. Soil sampling was also carried out at the points where meso- and macrofauna sampling was established, forming a composite sample from each study area. To analyze the results, the diversity, equitability, similarity and correlation indices were calculated using the PAST software. Results and conclusion: The restored APP was the one that most matched the preserved forest fragment when evaluating the environments' soil fauna, also presenting the highest levels of diversity and equitability. The soil fauna responded to the heterogeneity of the environments, since the degraded APP had less incidence of soil organisms. Implications of the research: Validates the use of soil fauna as an instrument to assess the environmental quality of environments that are in the process of ecological restoration. Originality/value: The research helps overcome the bottleneck in the effective ecological restoration of previously degraded areas, as soil fauna can be used as another parameter for evaluating the restoration process.

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Fauna edáfica e serrapilheira associadas á dois fragmentos florestais na Amazônia Meridional

Cited by 2 publications

References 15 publications

Accumulation and decomposition of cultural residues of Theobroma grandiflorum, Paullinia cupana, Bixa orellana and forest in the southern region of Amazonas

Accumulation and decomposition of cultural residues of Theobroma grandiflorum, Paullinia cupana, Bixa orellana and forest in the southern region of Amazonas

Earth Fauna in Different Environments in the Southern Amazon

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