Relação Entre Sucessão Secundária, Solo E Serapilheira Em Uma Reserva Biológica No Estado Do Rio De Janeiro, Brasil

Camara, Rodrigo; Silva, Vinicius Duncan; Delaqua, Geovana Carla Girondi; Lisbôa, Cinthia Pinheiro; Villela, Dora Maria

doi:10.5902/1980509832066

Cited by 8 publications

(15 citation statements)

References 18 publications

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“…Annual total litterfall (Mg ha -1 year -1 ) and the relative contribution of the leaf fraction (%) in different Atlantic Forest phytophysiognomies (SSDF: Seasonal Semi-Deciduous Forest; SDF: Seasonal Deciduous Forest; NDF: Non-Deciduous Forest; RE: Restinga), Brazil. mechanical impacts tend to produce high litterfall (Camara et al, 2018b).…”

Section: Fine Litterfallmentioning

confidence: 99%

Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil

et al. 2020

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The present study aimed to evaluate fine aboveground litterfall, deposition of nitrogen and phosphorus from total litterfall and leaf litter decomposition in areas of tall forest (Mata Alta) and low forest on sandy soils (Mussununga) in southeastern Brazil. Fine litterfall was collected monthly for two years (from June/2007 to May/2009) in 10 conical collectors (0.25 m 2) in each phytophysiognomy (1 ha plots). The material was subsequently separated into leaves, branches, flowers and fruits, and unidentified material. Leaf decomposition rates were evaluated using 15 litterbags, three of which were collected every 30 days. Higher litterfall occurred in both phytophysiognomies during the rainy season, with leaves predominating. The lowest litterfall, nutrient input, and leaf litter decomposition values appeared to be nutrient conservation strategies, contributing to the ecological functioning of the Mussununga where soil fertility was lower than in the Mata Alta.

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Section: Fine Litterfallmentioning

confidence: 99%

Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil

et al. 2020

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“…The collect points were chosen at random. The collected material was dried at constant weight in an oven at 50 C for 48 h (Mayor et al, 2014;Camara et al, 2018). These samples were screen-sorted by the following fractions: leaves (leaves and leaflets, whole or fragmented); wood (branch or bark pieces with a diameter smaller than 2 cm, and fragments), flower + fruits (flowers, inflorescence or organ, and fragments recognized as such, fruits and seeds, whole or fragmented), and the rest (residues smaller than 2 mm, animal-origin and unknown matter) (Proctor et al, 1983).…”

Section: Site Of Study Species and Sampling Periodmentioning

confidence: 99%

“…The superficial soil (0-10 cm) was collected from below the litter layer withdrawn, totalizing 75 samples with 400 cm 2 of soil. The 75 soil samples were dried at constant weight in an oven at 60 C for 48 h (Mayor et al, 2014;Severo et al, 2017, Camara et al, 2018. No decarbonation was performed once previous tests verified the absence of inorganic carbon in the soil (Camara et al, 2018).…”

Section: Site Of Study Species and Sampling Periodmentioning

confidence: 99%

“…The 75 soil samples were dried at constant weight in an oven at 60 C for 48 h (Mayor et al, 2014;Severo et al, 2017, Camara et al, 2018. No decarbonation was performed once previous tests verified the absence of inorganic carbon in the soil (Camara et al, 2018). A soil sub-sample was used to determine granulometric fractions (item 3), and another sub-sample was sieved in a 2 mm mesh and homogenized for isotopic and elemental determination of C and N (n = 25) (Telles et al, 2003).…”

Section: Site Of Study Species and Sampling Periodmentioning

confidence: 99%

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Consequences of removal of exotic species (eucalyptus) on carbon and nitrogen cycles in the soil-plant system in a secondary tropical Atlantic forest in Brazil with a dual-isotope approach

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et al. 2020

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The impact of exotic species on heterogeneous native tropical forest requires the understanding on which temporal and spatial scales these processes take place. Functional tracers such as carbon (δ13C) and nitrogen (δ15N) isotopic composition in the soil-plant system might help track the alterations induced by the exotic species. Thus, we assess the effects from the removal of the exotic species eucalyptus (Corymbia cytriodora) in an Atlantic forest Reserve, and eucalyptus removal on the alteration of the nutrient dynamics (carbon and nitrogen). The hypotheses were: (1) the eucalyptus permanence time altered δ13C and δ15N in leaves, soils and litter fractions (leaves, wood, flowers + fruits, and rest); and (2) eucalyptus removal furthered decomposition process of the soil organic matter. Hence, we determined the soil granulometry, the δ13C and δ15N in leaves, in the superficial soil layer, and litter in three sites: a secondary forest in the Atlantic forest, and other two sites where eucalyptus had been removed in different times: 12 and 3 months ago (M12 and M3, respectively). Litter samples presented intermediate δ13C and δ15N values in comparison with leaves and soil. In the M3, the greater δ13C values in both litter rest fraction and soil indicate the presence, cycling and soil incorporation of C, coming from the C4 photosynthesis of grassy species (Poaceae). In the secondary forest, the soil δ15N values were twice higher, compared with the eucalyptus removal sites, revealing the negative influence from these exotic species upon the ecosystem N dynamics. In the M12, the leaves presented higher δ13C mean value and lower δ15N values, compared with those from the other sites. The difference of δ13C values in the litter fractions regarding the soil led to a greater fractioning of 13C in all sites, except the flower + fruit fractions in the secondary forest, and the rest fraction in the M3 site. We conclude that the permanence of this exotic species and the eucalyptus removal have altered the C and N isotopic and elemental compositions in the soil-plant system. Our results suggest there was organic matter decomposition in all litter fractions and in all sites. However, a greater organic matter decomposition process was observed in the M3 soil, possibly because of a more intense recent input of vegetal material, as well as the presence of grassy, easily-decomposing herbaceous species, only in this site. Therefore, the dual-isotope approach generated a more integrated picture of the impact on the ecosystem after removing eucalyptus in this secondary Atlantic forest, and could be regarded as an option for future eucalyptus removal studies.

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“…Nas demais parcelas, que constituem o controle (CT), a camada de serapilheira tem sido mantida. As folhas de Corymbia citriodora apresentam elevada participação relativa na serapilheira aportada ao solo em ambos os plantios, mas esta contribuição é maior em P19 (96% do total da serapilheira foliar), na comparação com o P42 (46%) (CAMARA et al, 2018b).…”

Section: Caracterização Da áRea De Estudounclassified

Impacto da remoção de serapilheira sobre a comunidade de artrópodes edáficos em plantios abandonados de <i>Corymbia citriodora</i>

et al. 2019

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Experimentos de manipulação podem contribuir para a compreensão do papel ecológico da serapilheira em ecossistemas florestais. No entanto, há poucos estudos desta natureza. Os efeitos da remoção da camada de serapilheira (RS) foram avaliados sobre a comunidade de artrópodes do solo em dois plantios abandonados de Corymbia citriodora, em diferentes estágios de regeneração natural de espécies nativas de Mata Atlântica. Armadilhas de queda foram instaladas aleatoriamente em 5 parcelas (5 x 20 m) de RS e controle (CT), no plantio com 19 anos de idade (P19: estágio menos avançado; maior participação da serapilheira de eucalipto) e plantio com 42 anos (P42: estágio mais avançado de regeneração; maior participação da serapilheira de espécies nativas), nas estações chuvosa e seca, na Reserva Biológica União, RJ, Brasil. A maioria dos grupos taxonômicos apresentou inibição da abundância com a RS, no P19 e P42. De uma maneira geral, Diptera, Poduromorpha, Pseudoscorpionida, Symphypleona e larvas de Coleoptera foram os principais grupos impactados negativamente pela RS. Por outro lado, alguns grupos foram favorecidos pela RS, principalmente Entomobryomorpha e Formicidae. A RS diminuiu a riqueza total, uniformidade e diversidade de artrópodes edáficos em ambos os plantios. Contudo, este efeito negativo foi mais importante no P19, no qual também ocorreu a diminuição da abundância total e riqueza média. O maior fechamento do dossel provavelmente minimizou o impacto negativo da RS sobre os artrópodes edáficos no P42.

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Relação Entre Sucessão Secundária, Solo E Serapilheira Em Uma Reserva Biológica No Estado Do Rio De Janeiro, Brasil

Cited by 8 publications

References 18 publications

Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil

Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil

Consequences of removal of exotic species (eucalyptus) on carbon and nitrogen cycles in the soil-plant system in a secondary tropical Atlantic forest in Brazil with a dual-isotope approach

Impacto da remoção de serapilheira sobre a comunidade de artrópodes edáficos em plantios abandonados de <i>Corymbia citriodora</i>

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