Consulta: creatorFacets:"Kilca,Ricardo de Vargas"
Registros recuperados: 4
Data/hora: 09/06/2024 18:44:32

Distinção de espécies de eucaliptode diferentes idades por meio de imagens TM/Landsat 5
Provedor de dados: 86
Autores: Goergen,Laura Camila de Godoy; Kilca,Ricardo de Vargas; Narvaes,Igor da Silva; Silva,Matheus Nunes; Silva,Emanuel Araújo; Pereira,Rudiney Soares; Adami,Marcos.
Resumo: O objetivo deste trabalho foi avaliar a utilização de imagens do sensor TM/Landsat 5 na diferenciação de plantios comerciais de Eucalyptus dunnii e Eucalyptus urograndis com diferentes idades. Demarcaram-se parcelas para identificar as duas espécies, em dois períodos distintos (2009 e 2011), a idades de 3 e 5 anos, para E. dunnii, e 2,2 e 4,2 anos para E. urograndis. Avaliaram-se seis bandas do sensor TM/Landsat 5 (B1, B2, B3, B4, B5 e B7) e seis índices de vegetação: razão simples (SR); índice de vegetação por diferença normalizada (NDVI); índice de vegetação ajustado ao solo (Savi)-0,25; Savi-0,5; índice de vegetação por diferença normalizada com uso da banda verde (GNDVI); e índice de umidade na vegetação (MVI). O processamento digital das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus; Análise de componentes principais; Assinatura espectral; Plantios florestais.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000100053

What explains the variation on the regenerative component dynamics of Araucaria Forests in southern Brazil?
Provedor de dados: 63
Autores: Vefago,Manoela Bez; Silva,Ana Carolina da; Cuchi,Tarik; Santos,Guilherme Neto dos; Nunes,Amanda da Silva; Rodrigues Júnior,Luiz Carlos; Lima,Carla Luciane; Gross,Aline; Kilca,Ricardo de Vargas; Higuchi,Pedro.
ABSTRACT: The natural regeneration process is essential for forest maintenance since it is critical for establishing new tree individuals. This study aimed to improve the understanding of the regenerative component dynamics of Araucaria Forests in Southern Brazil. We investigated the effects of climate, light, tree component structure and anthropogenic disturbance on tree species regeneration. Regenerating communities from six different fragments in forest remnants of the “Planalto Sul Catarinense” region was evaluated in permanent plots two years after the first inventory. The following demographic rates were determined: recruitment, mortality, net change in the number of individuals and the changes to both upper and lower height classes. The following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest dynamics; Cattle disturbance; Climatic variables; Mixed ombrophyllous forests.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500405

Soil changes in a subtropical seasonal forest chronosequences in the south of Brazil
Provedor de dados: 65
Autores: Kilca,Ricardo de Vargas; Pedron,Fabrício de Araújo; Schwartz,Gustavo; Longhi,Solon Jonas; Deobald,Gabriel Antônio.
ABSTRACT: The abandonment of field crops and the vegetation recovery in exhausted soils have been a recently studied subject as a way to assess the forest role on the soil recovering. The aim of this study was assess changes in the chemical(14 variables) and grain size (sand, silt, and clay) soil features in four forests chronosequences grew over abandoned field crops in the edge of the Brazilian Southern plateau, Rio Grande do Sul State. There were selected 25 forests aging from 5 to &gt;100 years old in areas of slopes and highlands where samples of Leptosols and Regosols were collected at 15cm in depth. The Fisher's Discriminant Analysis showed that some variable groups of soils can distinguish significantly the soils under different forest ages. Six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary succession; Agriculture impacts; Fisher's Discriminant Analysis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202174

Pesquisa estuda impactos nos solos florestais após o uso agrícola
Provedor de dados: 65
Autores: Kilca,Ricardo de Vargas.
Tipo: Info:eu-repo/semantics/other
Ano: 2024
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016010200001