Kelly de Almeida Silva
Universidade Federal de Viçosa
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Revista Arvore | 2010
Aurino Miranda Neto; Sustanis Horn Kunz; Sebastião Venâncio Martins; Kelly de Almeida Silva; Deideluci Aparecida da Silva
This study had as its objective to compare the transposition of the soil seed bank of two successional stages of Seasonal Semideciduous Forest for a Melinis Minutiflora P. Beauv site, in an abandoned pasture of the Mata do Paraiso Forest Reserve, Vicosa, MG. Ten parcels had been placed in each successional site of forest and withdrawals of the center of each parcel sample of 1 m² and 5 cm of superficial depth of soil, being carried afterwards to the abandoned pasture site. Two hundred and thirty one individuals had been registered in the two treatments (initial forest and mature forest), consisting of 31 shrubs and 200 trees. The individuals are distributed by 13 families, 17 kinds and 22 species. The most abundant species had been Vernonia polyanthes, with 108 individuals and Senna multijuga, with 39 individuals. The soil seed bank coming from the site of initial secondary forest (Fi) registered more individuals (120) than the bank coming from the site of the mature forest (Fm), with 111 individuals. The parcels witnesses had been colonized by herbaceous and mainly by the exotic grass Melinis Minutiflora. The number of germinated seeds was only greater in the Fm treatment in the months of july/2008 and january/2009. Significant differences were observed with 1% probability, between the treatments, for the variable wealth of species and density of individuals. The present study showed that it is recommendable and viable to adopt the technique of transposition of the seed bank as a methodology of forest restoration of abandoned pasture.
Revista Arvore | 2011
Tiago Maciel Ribeiro; Sebastião Venâncio Martins; Vanessa Mendes Lana; Kelly de Almeida Silva
RESUMO – Este estudo teve como objetivos avaliar a sobrevivencia e crescimento inicial de plântulas de Euterpe edulis Mart. transplantadas para duas condicoes de luz: clareira e sub-bosque, alem de discutir seu comportamento ecofisiologico. Foram transplantadas 90 plântulas com altura entre 5 e 25 cm em seis parcelas: tres em subbosque e tres em clareiras, no espacamento 2 x 2 m em tres linhas de plantio, com cinco plântulas cada. A porcentagem de sobrevivencia (geral) no periodo do estudo foi de 36,7%, enquanto nas clareiras foi de 53,3% e no sub-bosque, 20%. Uma regressao nao linear mostrou relacao positiva entre abertura de dossel e sobrevivencia de plântulas de E. edulis. A maior taxa de sobrevivencia das plântulas no ambiente de clareira em relacao ao sub-bosque pode ser explicada pelo excesso de sombreamento no ultimo, causada pela baixa porcentagem de abertura do dossel (4,78%). A abertura do dossel nao influenciou significativamente no crescimento das plântulas. Palavras-chave: Regeneracao, Restauracao florestal, Euterpe edulis e Reserva Mata do Paraiso.
Revista Arvore | 2014
Aurino Miranda Neto; Sebastião Venâncio Martins; Kelly de Almeida Silva; José Marinaldo Gleriani
Este estudo teve por objetivo avaliar o banco de sementes do solo e a serapilheira acumulada em uma floresta restaurada por meio de plantio, com 40 anos, em Vicosa, MG. Foram alocadas 16 parcelas contiguas de 25 x 25 m, cobrindo toda a area da floresta (1 ha). Em cada parcela, foram coletadas cinco amostras de solo superficial (0,30 x 0,30 x 0,05 m) para avaliacao do banco de sementes pelo metodo de germinacao e uma amostra de 1,0 m2 de serapilheira para avaliacao da serapilheira acumulada. Foi realizada a classificacao dos individuos e especies de plântulas registrados do banco de sementes quanto a categoria sucessional, sindrome de dispersao e habito de vida. Foram registradas 5.555 plântulas pertencentes a 32 familias e 93 especies e um morfotipo que reuniu todas as trepadeiras. Registrou-se o predominio de sindrome de dispersao zoocorica e, quanto ao habito de vida, maior percentual de ervas, em nivel de especie (48,6%) e de individuo (44,8%). Entre as especies arbustiva-arboreas, observou-se maior percentual da categoria sucessional pioneira, em nivel de especie (75,1%) e de individuo (85,1%). A serapilheira media acumulada foi de 3.432 kg ha-1, com a fracao foliar representando 65% e correlacao significativa com a area basal (p = 0,031; R2 = 0,29) do estrato arboreo. Os resultados indicam que o banco de sementes do solo da floresta restaurada, apos 40 anos de sua implantacao se assemelha, quanto as relacoes ecologicas, as areas de floresta estacional semidecidual na mesma regiao e a outras areas restauradas que tambem foram utilizados plantio de mudas.
Revista Arvore | 2016
Geanna Gonçalves de Souza Correia; Sebastião Venâncio Martins; Aurino Miranda Neto; Kelly de Almeida Silva
Neste trabalho, objetivou-se quantificar e comparar a serapilheira acumulada em uma floresta em restauracao (FR) ha 23 anos com uma Floresta Ombrofila Densa primaria (FP) adjacente. Foram alocadas 30 parcelas permanentes de 3 x 3 m em cada area. No centro de cada parcela foi coletada a serapilheira (0,50 x 0,50 x 0,05 m). O material foi seco em estufa a 70 °C, durante 48 h, e mensurada a massa de materia seca. Foi calculada a matriz de correlacao de Pearson entre os valores de serapilheira acumulada e as variaveis ambientais indice de area de planta (IAP), compactacao do solo e densidade de individuos arbustivo-arboreos do estrato de regeneracao natural. Os valores medios encontrados (FR = 3.177 ± 937 kg.ha-1; FP = 4.411 ± 1.389 kg.ha-1) de serapilheira acumulada apresentaram diferenca significativa entre as duas areas estudadas (p < 0,001). A serapilheira acumulada apresentou correlacao significativa (p < 0,001) com a compactacao do solo e indice de area de planta.
Revista Arvore | 2015
Kelly de Almeida Silva; Sebastião Venâncio Martins; Aurino Miranda Neto; Wanuza Helena Campos
O objetivo deste estudo foi avaliar o efeito da transposicao de serapilheira na semeadura direta como metodologia de restauracao ecologica de areas degradadas. O estudo foi realizado no Viveiro de Pesquisas da Universidade Federal de Vicosa (UFV), em canteiros a ceu aberto, com delineamento inteiramente casualizado. Compararam-se tres tratamentos distintos, com cinco repeticoes cada, deixando-se tambem cinco parcelas como controle. Nas parcelas controle, apenas removeu-se o solo superficial do canteiro. Os demais tratamentos consistiram da semeadura direta de quatro especies nativas, sendo duas pioneiras (Senna macranthera e Colubrina glandulosa) e duas nao pioneiras (Tabebuia serratifolia e Cedrela fissilis). O tratamento 1 constituiu de apenas semeadura direta, o tratamento 2 de semeadura direta com posterior transposicao de serapilheira e o tratamento 3 foi constituido de transposicao de serapilheira com posterior semeadura direta. A serapilheira foi transposta de um fragmento de Floresta Estacional Semidecidual secundaria localizado no Campus da UFV. Apos dois anos, o tratamento 2 apresentou maior porcentagem de emergencia de plântulas. No tratamento 1 foram encontrados 36 individuos arboreos, oriundos apenas da semeadura. No tratamento 2 haviam 312 individuos arboreos e no tratamento 3, 140, ambos com individuos oriundos da semeadura e serapilheira transposta. A transposicao da serapilheira influenciou a emergencia e estabelecimento das plântulas. S. macranthera e C. glandulosa foram as especies com maior porcentagem de emergencia e, portanto, apresentaram potencial para uso em projetos de restauracao ecologica atraves de semeadura direta.
Floresta e Ambiente | 2016
Kelly de Almeida Silva; Sebastião Venâncio Martins; Aurino Miranda Neto; Raul de Abreu Demolinari; Aldo Teixeira Lopes
The aim of this study was to evaluate the seedlings of tree species planted for forest restoration in a bauxite mining. We allocated twenty plots of 9 × 6 m and diameter at ground level, height and canopy diameter of planted seedlings. Also were calculated the mortality percentage and the importance value (VI) species. We recorded 540 alive individuals (22.86% mortality) and 45 species. The species with the highest VIs were Solanum lycocarpum (14.7%) and Schinus terebinthifolius (10.8%). S. terebinthifolius, S. lycocarpum and Joannesia princeps, contributed 30.4% canopy cover. Average height of seedlings planted ranged from 0.4 m to 3.9 m. The species used in the restoration of the mined area provided ecological benefits to the area, such as soil coverage, thus ameliorating erosion and invasion of aggressive exotic grasses.
Floresta e Ambiente | 2016
Aurino Miranda Neto; Sebastião Venâncio Martins; Kelly de Almeida Silva; Aldo Teixeira Lopes; Raul de Abreu Demolinari
This study aimed to characterize the soil seed bank in a restored bauxite mine ten years after the restoration project. The study was conducted in a bauxite-exploited mine, which was restored with trees. We collected 40 samples of surface soil (0.25 × 0.30 × 0.05 m) to evaluate soil seed bank by germination method in shade house for six months. Results showed that 2,489 seedlings emerged, belonging to 69 species and 23 botanical families, with a density of 830 seedlings m–2. Poaceae and Cannabaceae were the families with higher density. A larger number of species and individuals were pioneer and zoochoric species. The soil seed bank of the restored area showed no difference in plant density and floristic composition between the border and the core study area. There was no floristic similarity between planted species and the seed bank. Results showed that the seed bank was able to supply species and individuals upon germination.
Bosque (valdivia) | 2014
Aurino Miranda Neto; Sebastião Venâncio Martins; Kelly de Almeida Silva; Aldo Teixeira Lopes; Raul de Abreu Demolinari
The objective of the present study was to verify if, in floristic terms of natural regeneration, a restored bauxite mine in southeast Brazil can be considered successfully restored. Forty plots of 3.0 x 3.0 m were allocated in the area. All shrubs and trees with height ≥ 0.30 m and diameter at 1.30 m height (DBH) ≤ 5.0 cm were identified and classified into successional categories and dispersal syndromes; DSL (diameter at soil level) and height were measured. We use the canonical correspondence analysis (CCA) to verify the correlations between environmental variables (canopy openness, litter decomposition, soil penetration resistance) and vegetation. We found 705 individuals, 80 species and 30 families. The families with the highest species richness were Fabaceae and Melastomataceae. The specie with the highest importance value (IV) was Myrcia splendens. Most species are the early secondary successional category and the zoochoric dispersion syndrome. CCA ordination indicates the formation of a group of species associated with less soil compaction and with low litter decomposition rate and the formation of another group associated with intermediate values of soil penetration resistance and litter decomposition rate. The results obtained after ten years of implementation of the restoration project, in floristic terms, are suitable. In other words, the area can be considered as successfully restored.Votorantim Metais, Setor de Meio Ambiente, CEP: 36790000, Mirai, MG, Brasil.SUMMARYThe objective of the present study was to verify if, in floristic terms of natural regeneration, a restored bauxite mine in southeast Brazil can be considered successfully restored. Forty plots of 3.0 x 3.0 m were allocated in the area. All shrubs and trees with height ≥ 0.30 m and diameter at 1.30 m height (DBH) ≤ 5.0 cm were identified and classified into successional categories and dispersal syndromes; DSL (diameter at soil level) and height were measured. We use the canonical correspondence analysis (CCA) to verify the correlations between environmental variables (canopy openness, litter decomposition, soil penetration resistance) and vegetation. We found 705 individuals, 80 species and 30 families. The families with the highest species richness were Fabaceae and Melastomataceae. The specie with the highest importance value (IV) was
Pesquisa Florestal Brasileira | 2012
Aurino Miranda Neto; Sebastião Venâncio Martins; Kelly de Almeida Silva; José Marinaldo Gleriani
Revista Arvore | 2012
Aurino Miranda Neto; Sebastião Venâncio Martins; Kelly de Almeida Silva; José Marinaldo Gleriani
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National Council for Scientific and Technological Development
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