Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

Araújo, Ademir Sérgio Ferreira de; Magalhães, Laerte; Santos, Vera Maria dos; Nunes, Luís Alfredo Pinheiro Leal; Dias, Carolina

doi:10.1590/1519-6984.06715

Cited by 5 publications

(6 citation statements)

References 28 publications

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“…There are 22 faunal groups present in the different management systems studied (Table 3). There were changes in the soil fauna variables evaluated as a function of the soil management system, corroborating other works in the savanna piauiense (Santos et al, 2016;Araújo et al, 2017).…”

Section: Resultssupporting

confidence: 89%

“…The groups Araneae and Pseudoscorpionida showed higher occurrence in the native savanna area. Similar result on the density of the Araneae group was observed by Araújo et al (2017), working in preserved and unpreserved native savanna area. The predominance of the Araneae group in FA may be associated with the accumulation of leaves in the reference area, as this greater amount of leaves provides greater heterogeneity in the burlap microhabitat.…”

Section: Resultssupporting

confidence: 85%

“…The invertebrate fauna is an important indicator of soil quality and performs important functions, such as fragmentation of organic residues, nutrient cycling, aeration, nutrient mobilization, and control of the trophic chain, such functions being vital for plant development and, consequently, for a balanced ecosystem (Araújo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Epigean fauna in no-till systems, pasture, eucalyptus and native savanna in Uruçuí, Piauí, Brazil

Gualberto

Cunha

Vogado

et al. 2021

Agraria

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The soil fauna is one of the bioindicators of soil quality that has greater sensitivity, being easily altered by changes that occur in natural and agricultural ecosystems. The objective of this work was to evaluate the density and diversity of the soil macrofauna and the functional groups of the epigeal macrofauna that are most representative in no-tillage, pasture, eucalyptus cultivation and native savanna systems in Uruçuí, Piauí, Brazil. Five soil management systems were used: pasture (PAS); no tillage soybean in corn straw (NT1); no tillage of corn under straw of mombaça grass (NT2); eucalyptus (EUC), in addition to a savanna area used as a reference (FA). Fauna collection was performed using pitfall traps containing 4% formaldehyde. The fauna was evaluated by the number of individuals per trap per day, wealth, average wealth, Shannon's diversity index and Pielou's uniformity index. The data was subjected to analysis of variance, and when significant, was subjected to the Friedman test. The pasture system had the least impact on edaphic fauna when compared to native savanna forest and when compared to management systems and the collembola, orthoptera and diptera groups were the most abundant in the studied management systems.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Epigean fauna in no-till systems, pasture, eucalyptus and native savanna in Uruçuí, Piauí, Brazil

Gualberto

Cunha

Vogado

et al. 2021

Agraria

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“…The effects on the diversity of soil fauna have been the main focus of scientific investigations regarding the substitution of forest by monoculture systems, mainly regarding loss of habitat quality and its ecological and evolutionary consequences. Some studies have already shown the differences in the diversity, composition of fauna species in different ecosystems resulting from the process of fragmentation of forests in equilibrium, such as the Caatinga (Araújo et el., 2010), Mata de Cocais (Nunes et al, 2012), Mata Atlântica (Pereira et al, 2013), Cerrado (Araújo et al, 2017) and areas with distinct floristic domains (Nunes et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Characterization of edaphic fauna in different monocultures in Savanna of Piauí

et al. 2021

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Vegetation cover may show diversity and composition patterns of the soil invertebrate community, as a function of litter quantity and quality in a specific habitat. The objective of this work was to characterize the distribution of edaphic fauna in different monocultures. The study was carried out at Chapada Grande farm in Regeneração, PI. Four monoculture areas were chosen: no-tillage soybean, eucalyptus, pasture, and a preserved native cerrado forest. Soil fauna was collected in a dry and wet period by pitfall traps containing 4% formaldehyde. The edaphic fauna was evaluated by the number of individuals per trap per day, average richness and richness, Shannon diversity index and Pielou uniformity index. Data were submitted to analysis of variance and multivariate Principal Component Analysis (PCA). The highest number of individuals per day trap and of average richness were registered in the pasture, eucalyptus and forest areas in both periods, while soybean showed lower values with predominance of Coleoptera and Formicidae groups. The pasture and forest areas showed of higher Shannon index values in the two evaluated seasons, probably due to higher contributions organic residues in the soil that favors the shelter, feeding and reproduction conditions. Regarding the Pielou index, the soybean system showed higher values in this variable. The Aranae, Coleoptera, Formicidae and Diptera groups predominated in the humid period, while Coleoptera and Formicidae predominated in the dry period. Systems that generate greater accumulation of residues harbor a greater diversity of invertebrates of the edaphic fauna. Seasonality had an effect on all variables analyzed and the wet period showed more expressive values.

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“…Notwithstanding, in spite of the importance of the PNSC, the work done so far is related to botanical (Oliveira et al, 2010), soil chemical and microbiological (Araújo et al, 2017) and geomorphological aspects (IBDF, 1979). In this sense, information on soil invertebrates is extremely relevant, since it can provide data on nutrient cycling and the regulation of primary productivity in these environments (Bustamante et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Edaphic fauna in a vegetation gradient in the Sete Cidades National Park

et al. 2019

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The vegetation physionomy and cover can show patterns of diversity and composition of the edaphic community, depending on the quantity and quality of litter in a specific habitat. The objective of this study was to evaluate the effect of the vegetation gradient formed by Graminoid Field (GRF), Cerrado Sensu Stricto (CSS), Cerradão (CRD) and Semideciduous Seasonal Forest (SSF) on density, diversity and composition of the edaphic fauna community in two seasons of the year, in the Sete Cidades National Park (Piauí state). For fauna sampling, a total of eight pitfall traps, distanced 10 m, were placed in each area in the central part of each system, where they remained for seven days. In the wet period, there was a tendency to increase the number of individuals as a function of the complexity of the vegetation formation, with the inverse occurring in the dry period. It was verified an environmental variation of the climatic factors temperature and humidity according to the vegetal formation, contributing to a heterogeneous distribution of the fauna. The GRF formation presented a significantly lower value of average richness only in the dry period. Regarding the variables of diversity and uniformity, they did not show drastic variations in relation to the vegetation gradient studied. The dominant groups in the vegetation gradient were Formicidae, Coleoptera, Aranae, Acari and Collembola, with reduction of the number of Coleoptera in the dry season. Principal component analysis (PCA) revealed greater differences in the composition of the communities between the vegetation formations for the rainy season. At this time, the formations SSF and CRD were associated to a greater diversity of invertebrates than CSS and GRF, demonstrating the influence of the vegetation complexity on the soil fauna community.Keywords: Savanna, seasonality, species diversity, soil invertebrates, successional stage. Fauna edáfica em um gradiente vegetacional no Parque Nacional de Sete Cidades ResumoA fisionomia e cobertura vegetal podem mostrar padrões de diversidade e composição da comunidade edáfica, em função da quantidade e qualidade da serapilheira em determinado habitat específico. O presente trabalho teve por objetivo avaliar o efeito do gradiente vegetacional formado por Campo Graminóide (CGR), Cerrado Sensu Stricto (CSS), Cerradão (CRD) e Floresta Estacional Semidecídua (FES) sobre a densidade, diversidade e composição da comunidade da fauna edáfica em duas épocas do ano do Parque Nacional de Sete Cidades (PI). Para amostragem da fauna foram colocadas um total de oito armadilhas do tipo Pit-fall, distanciadas por 10 m, em cada área na parte central de cada sistema, onde permaneceram por sete dias. No período úmido houve uma tendência a aumento do número de indivíduos conforme a complexidade da formação vegetal e o inverso ocorreu no período seco. Verificou-se uma variação ambiental dos fatores climáticos temperatura e umidade conforme a formação vegetal contribuindo para uma distribuição heterogênea da fauna. Apenas no período ...

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Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

Cited by 5 publications

References 28 publications

Epigean fauna in no-till systems, pasture, eucalyptus and native savanna in Uruçuí, Piauí, Brazil

Epigean fauna in no-till systems, pasture, eucalyptus and native savanna in Uruçuí, Piauí, Brazil

Characterization of edaphic fauna in different monocultures in Savanna of Piauí

Edaphic fauna in a vegetation gradient in the Sete Cidades National Park

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