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	Provedor de dados Acta Amazonica (2) Autor SANTOS,João Roberto dos (2) GALVÃO,Lênio Soares (1) GRAÇA,Paulo Maurício Lima de Alencastro (1) KEIZER,Edwin Willem Hermanus (1) MALDONADO,Francisco Dario (1) MOURA,Yhasmin Mendes (1) SILVA,Camila Valéria de Jesus (1) SILVA,Ricardo Dal'Agnol da (1) Mais... Palavra-chave Biomass (1) Deforestation (1) Forest monitoring (1) Forest recovery vegetation dynamics forest structure floristic patterns (1) Remote sensing (1) Timber exploitation (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2015 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Floristic and structure of an Amazonian primary forest and a chronosequence of secondary succession Acta Amazonica SILVA,Camila Valéria de Jesus; SANTOS,João Roberto dos; GALVÃO,Lênio Soares; SILVA,Ricardo Dal'Agnol da; MOURA,Yhasmin Mendes. ABSTRACT The analysis of changes in species composition and vegetation structure in chronosequences improves knowledge on the regeneration patterns following land abandonment in the Amazon. Here, the objective was to perform floristic-structural analysis in mature forests (with/without timber exploitation) and secondary successions (initial, intermediate and advanced vegetation regrowth) in the Tapajós region. The regrowth age and plot locations were determined using Landsat-5/Thematic Mapper images (1984-2012). For floristic analysis, we determined the sample sufficiency and the Shannon-Weaver (H'), Pielou evenness (J), Value of Importance (VI) and Fisher's alpha (α) indices. We applied the Non-metric Multidimensional Scaling (NMDS) for similarity... Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest recovery vegetation dynamics forest structure floristic patterns; Biomass. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000200133 Multi-temporal analysis of radiometric changes in satellite images of forest edges to infer selective-logging areas in the Amazon forest Acta Amazonica GRAÇA,Paulo Maurício Lima de Alencastro; MALDONADO,Francisco Dario; SANTOS,João Roberto dos; KEIZER,Edwin Willem Hermanus. Radiometric changes observed in multi-temporal optical satellite images have an important role in efforts to characterize selective-logging areas. The aim of this study was to analyze the multi-temporal behavior of spectral-mixture responses in satellite images in simulated selective-logging areas in the Amazon forest, considering red/near-infrared spectral relationships. Forest edges were used to infer the selective-logging infrastructure using differently oriented edges in the transition between forest and deforested areas in satellite images. TM/Landsat-5 images acquired at three dates with different solar-illumination geometries were used in this analysis. The method assumed that the radiometric responses between forest with selective-logging effects... Tipo: Info:eu-repo/semantics/article Palavras-chave: Timber exploitation; Deforestation; Remote sensing; Forest monitoring. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000100035 Registros recuperados: 2 Primeira ... 1 ... Última

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