Deposição De Serapilheira E Nutrientes Em Áreas De Mineração Submetidas a Métodos De Restauração Florestal Em Paragominas, Pará

Martins, Walmer Bruno Rocha; Ferreira, Gracialda Costa; Souza, Fernanda Pantoja; Dionísio, Luiz Fernandes Silva; Oliveira, Francisco de Assis

doi:10.5380/rf.v48i1.49288

Cited by 31 publications

(30 citation statements)

References 12 publications

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“…In a fragment of secondary forest near our study area found V. guianensis and C. matourensis were as being among the ten most representative species, proving to be abundant in the seed bank and adapted to the local conditions [18].…”

Section: Increase In Diameter and Height Of Regenerating Speciesmentioning

confidence: 65%

“…Returning the topsoil after the mining is essential, since it potentiates the natural regeneration due to the great quantity of seeds of forest species [23,27] and improves the physical, chemical and microbiological properties of the soil [10]. The most commonly used method for forest restoration of areas degraded by mining is to plant seedlings of forest species associated with topsoil soil cover [18,27], since these areas present low or no resilience after mineral extraction, especially when the sources of propagules are far from the areas to be restored. However, besides being costly, this method coupled with a high mortality rate of seedlings in the early years in mined areas many times does not guarantee project success [18].…”

Section: Introductionmentioning

confidence: 99%

“…The most commonly used method for forest restoration of areas degraded by mining is to plant seedlings of forest species associated with topsoil soil cover [18,27], since these areas present low or no resilience after mineral extraction, especially when the sources of propagules are far from the areas to be restored. However, besides being costly, this method coupled with a high mortality rate of seedlings in the early years in mined areas many times does not guarantee project success [18].…”

Section: Introductionmentioning

confidence: 99%

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Survival, growth and regeneration of forest species in mining areas in the Eastern Amazonia

et al. 2020

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Planting forest saplings is the most usual method for restoring areas degraded by mining. Therefore, the objective of this study was to evaluate the survival growth of planted forest species and spontaneous regeneration in post-bauxite mining areas. For this purpose, we sampled plots in recovery areas with ages ranging from five to nine years, in which the establishment, recruitment, mean annual increase in diameter and total height of the species were evaluated. The species were further classified for conservation status and origin. Of the 156 species found, 18 presented less than 25% of survival and were therefore not recommended for use in the areas, while another 22 planted species showed more than 55% survival, indicating that they can be used. Five species were registered with some threat level, another nine species were registered as exotic to Brazil and four to the Amazon. In general, 35 species were classified as suitable for planting, with an acceptable mortality rate and satisfactory growth. Thus, it was possible to select those most suitable for planting the post mining area through an evaluation of the survival rate and growth of the species.

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Section: Increase In Diameter and Height Of Regenerating Speciesmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Survival, growth and regeneration of forest species in mining areas in the Eastern Amazonia

et al. 2020

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“…A maior produção de folhas na região amazônica acontece pela renovação no período seco devido ao déficit hídrico (MARTINS et al, 2018a), associado também à renovação foliar para aproveitamento da radiação fotossintéticamente ativa (KIM et al, 2012). Isto é possível de explicar pela senescência característica das espécies arbóreas amazônicas, em resposta a processos metabólicos e ou estímulos do ambiente, como umidade relativa do ar (r=0,80 e ρ-valor=0,05) e precipitação (r=-0,87 e ρ-valor=<0,001).…”

Section: Discussionunclassified

Dinâmica De Serapilheira Em Uma Área De Floresta De Terra Firme, Amazônia Ocidental

Freire

Ventura

Fotopoulos

et al. 2020

NAT

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O objetivo deste estudo foi avaliar a produção e decomposição de serapilheira em uma área de floresta primária de terra firme na Reserva Biológica do Jaru. Para tanto, foi implantada uma parcela permanente de 1 hectare, onde foram demarcadas 25 subparcelas com 20 x 20 m cada. Para a coleta de serapilheira, instalou-se 25 coletores de PVC (1 em cada centro da subparcela), medindo 0,25 m², a 1 metro do solo, com malha de nylon de 1 mm. Para estimar o estoque de serapilheira, utilizou-se 25 coletores de madeira, medindo 0,25 m², com malha de nylon de 1 mm, dispostos no solo de cada subparcela. As coletas da pesquisa foram realizadas quinzenalmente, entre os meses de outubro de 2016 a setembro de 2017, e a serapilheira triada nas frações: folha, galho, material reprodutivo e miscelânea. No laboratório, os materiais amostrados foram secos em estufa à 80 ºC e pesados em balança de precisão centesimal, sendo que a decomposição de serapilheira foi estimada através da relação entre produção e estoque. De acordo com os resultados obtidos, a produção de serapilheira total foi de 14,13 Mg ha-1 e as frações seguiram o padrão: folhamiscelâneagalhomaterial reprodutivo. As maiores produções aconteceram na estação seca e a taxa de decomposição foi 1,37, indicando que a atividade microbiana na área de estudo é acelerada.Palavras-chave: dinâmica sazonal; nutrição de plantas; ecologia florestal; decomposição. LITTER DYNAMICS IN A FOREST AREA OF GROUND FIRM, WESTERN AMAZON ABSTRACT:The objective of this study was to evaluate the litter production and decomposition in an area of primary upland forest in the Jaru Biological Reserve. For that, a permanent plot of 1 hectare was implanted, where 25 subplots with 20 x 20 m each were demarcated. For the collection of litter, 25 PVC collectors were installed (1 in each center of the subplot), measuring 0.25 m², 1 meter from the ground, with 1 mm nylon mesh. To estimate the litter stock, 25 wood collectors, measuring 0.25 m², with 1 mm nylon mesh, were used, arranged in the soil of each subplot. The collections of the research were carried out fortnightly, between the months of October 2016 and September 2017, and the litter is sorted in the fractions: leaf, branch, reproductive material and miscellaneous. In the laboratory, the sampled materials were dried in an oven at 80 ºC and weighed on a centesimal precision scale, and the litter decomposition was estimated through the relationship between production and stock. According to the results obtained, the total litter production was 14.13 Mg ha-1 and the fractions followed the pattern: leafmiscellaneousbranchreproductive material. The highest yields occurred in the dry season and the decomposition rate was 1.37, indicating that the microbial activity in the study area is accelerated.Keyword: seasonal dynamics; plant nutrition; forest ecology; decomposition.

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“…Concerning the level of importance, leaf litter can be used to recover degraded areas (Martins et al, 2018) since it facilitates water infiltration into the soil (Coelho Netto, 2003), reducing erosion processes controlling the impact of rain directly on the soil. In addition, it improves the physical conditions of the environment (Mitchell & Tell, 1977), regulates humidity, soil temperature Marques, 1998), and serves as a shelter for several vertebrates and invertebrate animals (Facelli & Facelli, 1993).…”

Section: Importance Of Leaf Littermentioning

confidence: 99%

Interaction of macroinvertebrates in leaf litter in forest ecosystems: a review

Bezerra

Andrade

2021

J. Env. Anal. Progr.

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The leaf litter consists of vegetable fragments/waste (e.g., leaves, fruits, twigs) and animals. Acting on soil fertilization through its decomposition and fragmentation by abiotic factors (for example, bacteria, fungi, invertebrates, and vertebrates), helping in the process of nutrient cycling, becoming an alternative in the recovery of degraded areas. Its production varies according to the climatic conditions of the region, being the observation as greater leaf litter production in tropical and subtropical areas, as well as the semi-arid regions, where the plants in greater depth lose their leaves allowing a higher deposition of the biomass in the soil. The leaf litter still acts, as it applies to a diversity of animals that they use as a means to develop. Among the most representative animals are the Annelida (Oligochaeta), Myriapoda (Chilopoda and Diplopoda), Hexapoda (Diptera, Hemiptera, Orthoptera, Coleoptera, Blattodea, Isoptera, Hymenoptera, Lepidoptera, Isopoda, Thysanura), Cheliceriformes Araneae, Scorpiones, Pseudoscorpiones and Opiliones), Mollusca (Gastropoda). All these factors make the leaf litter, a source of nutrients rich in organic compounds that help improve soil fertility and provides the animals that live in it a universe of ecological niches that suit the needs of each species.

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Deposição De Serapilheira E Nutrientes Em Áreas De Mineração Submetidas a Métodos De Restauração Florestal Em Paragominas, Pará

Cited by 31 publications

References 12 publications

Survival, growth and regeneration of forest species in mining areas in the Eastern Amazonia

Survival, growth and regeneration of forest species in mining areas in the Eastern Amazonia

Dinâmica De Serapilheira Em Uma Área De Floresta De Terra Firme, Amazônia Ocidental

Interaction of macroinvertebrates in leaf litter in forest ecosystems: a review

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