Decomposição foliar da serapilheira de dois sistemas agroflorestais no Cerrado Sul-Mato-Grossense

Assis, V. P. de; Costa, Poliana Ferreira da; Santos, Mylena dos; Fróes, Caroline Quinhones; Silva, Maíra Cristina de Oliveira

doi:10.14295/holos.v20i4.12405

Cited by 3 publications

(3 citation statements)

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“…Em geral, a maior riqueza de grupos da macrofauna do solo esteve associada às áreas que apresentam uma espessa camada de serapilheira, servindo como habitat para uma grande diversidade de organismos (De Brito et al, 2016). Além de minimizar as variações de temperatura e umidade, acabam influenciando a dinâmica das reações químicas e os processos biológicos que ocorrem no solo (Bauer et al, 2018;Andrade;Amorim, 2018;Assis et al, 2020), mantendo em atividade a macrofauna edáfica.…”

Section: Resultsunclassified

Macrofauna Epiedáfica Associada a Solos Submetidos a Diferentes Usos

Mezzalira

Kubiak

Silva³

et al. 2022

Rev. Bras. Geog. Fis.

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As diferentes coberturas vegetais formam sobre o solo uma camada que serve como abrigo de diversos organismos. Entre estes, destaca-se a macrofauna epiedáfica, desempenhando importantes funções sobre a melhoria e manutenção da qualidade do solo. Diante do exposto, o objetivo do trabalho foi avaliar a macrofauna epiedáfica associada a diferentes usos de solo na região Sudoeste do estado do Paraná. A avaliação da macrofauna foi realizada pela instalação de armadilhas de queda preenchidas por solução formol 4%, permanecendo sete dias a campo. Os organismos classificados ao nível de família, em seis sistemas de manejo. A ordem Diptera obteve destaque, com predominância da família Drosophilidae, seguida pela ordem Coleoptera, com predominância das famílias Curculionidae, Nitidulidae e Staphylinidae, e pela ordem Hymenoptera, composta em 100% pela família Formicidae. Verificou-se maior riqueza de organismos na área de reserva legal, seguida pela área de eucalipto e mata ciliar, durante o período de verão. No período do outono verificou-se maior riqueza na área de reserva, eucalipto e pastagem. Conclui-se a existência de diferenciação espacial e não temporal da macrofauna epiedáfica, e influencia direta de diferentes coberturas vegetais sobre a riqueza de organismos.Palavras-chave: fauna epiedáfica, sistemas de manejo, biondicadores. Epiedaphic Macrofauna associated with soils submitted to different uses A B S T R A C TThe different vegetation coverings form a layer on the soil that serves as a shelter for different organisms. Among these, the epiedaphic macrofauna stands out, playing important roles in improving and maintaining soil quality. Given the above, the objective of the study was to evaluate the epiedaphic macrofauna associated with different land uses in the Southwest region of the state of Paraná. The macrofauna evaluation was carried out by installing fall traps filled with 4% formaldehyde solution, remaining in the field for seven days. The organisms classified at the family level, in six management systems. The order Diptera was highlighted, with predominance of the family Drosophilidae, followed by the order Coleoptera, with predominance of the families Curculionidae, Nitidulidae and Staphylinidae, and by the order Hymenoptera, composed 100% by the family Formicidae. There was a greater wealth of organisms in the area of legal reserve, followed by the area of eucalyptus and riparian forest, during the summer period. In the autumn period, there was greater wealth in the reserve area, eucalyptus and pasture. It concludes the existence of spatial and non-temporal differentiation of the epiedaphic macrofauna, and directly influences different vegetation coverings on the richness of organisms.Keywords: epiedaphic fauna, management systems, bioindicators.

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Section: Resultsunclassified

Macrofauna Epiedáfica Associada a Solos Submetidos a Diferentes Usos

Mezzalira

Kubiak

Silva³

et al. 2022

Rev. Bras. Geog. Fis.

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“…The lower decomposition rates observed in the T. grandiflorum and P. cupana areas can be attributed to lower moisture of the litter, related to high C:N ratio associated with high lignin concentrations (Walela et al, 2014;. Longer decomposition time is not an indication of malfunctioning agricultural systems, because the longer material remains on the soil surface, the greater its accumulation and surface coverage will be, providing soil protection (Assis et al, 2020) and providing long-term nutrients (Bai et al, 2022).…”

Section: Decomposition Of Leaf Littermentioning

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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“…Recent studies have indicated that organic matter decomposition and mineralization processes, at local level, are affected by the quality of the edaphic environment and microenvironment, i.e., by the interaction between the decomposer biota and soil factors such as moisture and temperature, whose combined effects depends on the biomass exposure time (SOUTO et al, 2013;PINTO et al, 2016;SOUZA et al, 2019;ASSIS et al, 2020). Thus, understanding the processes involved in decomposition and nutrient cycling and the factors that can affect the dynamics of this cycling is important for decision making related to the choice of appropriate management and species that will compose the system (SOUSA et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of plant organic matter decomposition in different agricultural landscapes

et al. 2023

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The functioning of ecosystems or agroecosystems is mainly dependent on the soil-litterfall interaction. Thus, the objective of this work was to evaluate the effect of different soil use and management systems on the dynamics of decomposition of plant residues of Azadirachta indica (neem) and Gliricidia sepium (gliricidia). The study was conducted in four land occupation systems, namely: remaining forest, agroforestry, agricultural mandala, and pasture. The decomposition rate was estimated using nylon bags (litter bags), containing 20 g of leaves of A. indica and G. sepium, which were arranged on the soil surface of each area for 18, 36, 54, 72, 90, and 108 days. A completely randomized design was used for each species, considering each area as one treatment, with four replications for each collection. The data were subjected to regression analysis and the means were compared by the Tukey's test (p<0.05). More than 85% and 90% of A. indica and G. sepium plant matters, respectively, had been decomposed after 108 days, regardless of the system evaluated, denoting that these species present high decomposition rates. The phytomass half-life time varied from 16 to 23 days for G. sepium and from 25 to 37 days for A. indica, depending on the land use system. Edaphic temperature, soil water content, and leaf physical and chemical characteristics are weight loss predictors. The results provide important information to enable forest management practices.

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Decomposição foliar da serapilheira de dois sistemas agroflorestais no Cerrado Sul-Mato-Grossense

Cited by 3 publications

References 0 publications

Macrofauna Epiedáfica Associada a Solos Submetidos a Diferentes Usos

Macrofauna Epiedáfica Associada a Solos Submetidos a Diferentes Usos

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

Dynamics of plant organic matter decomposition in different agricultural landscapes

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