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	Provedor de dados Acta Amazonica (1) Scientia Agricola (1) Autor Camargo,Miguel Angelo Branco (2) Marenco,Ricardo Antonio (2) Magalhães,Nilvanda dos Santos (1) Palavra-chave Amazonia (1) Hypostomatous leaves (1) Stomatal density (1) Stomatal length (1) Tropical rainforest (1) Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Density, size and distribution of stomata in 35 rainforest tree species in Central Amazonia Acta Amazonica Camargo,Miguel Angelo Branco; Marenco,Ricardo Antonio. Stomata are turgor-operated valves that control water loss and CO2 uptake during photosynthesis, and thereby water relation and plant biomass accumulation is closely related to stomatal functioning. The aims of this work were to document how stomata are distributed on the leaf surface and to determine if there is any significant variation in stomatal characteristics among Amazonian tree species, and finally to study the relationship between stomatal density (S D) and tree height. Thirty five trees (>17 m tall) of different species were selected. Stomatal type, density (S D), size (S S) and stomatal distribution on the leaf surface were determined using nail polish imprints taken from both leaf surfaces. Irrespective of tree species, stomata were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonia; Hypostomatous leaves; Stomatal density; Stomatal length; Tropical rainforest. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672011000200004 Do soil fertilization and forest canopy foliage affect the growth and photosynthesis of Amazonian saplings? Scientia Agricola Magalhães,Nilvanda dos Santos; Marenco,Ricardo Antonio; Camargo,Miguel Angelo Branco. Most Amazonian soils are highly weathered and poor in nutrients. Therefore, photosynthesis and plant growth should positively respond to the addition of mineral nutrients. Surprisingly, no study has been carried out in situ in the central Amazon to address this issue for juvenile trees. The objective of this study was to determine how photosynthetic rates and growth of tree saplings respond to the addition of mineral nutrients, to the variation in leaf area index of the forest canopy, and to changes in soil water content associated with rainfall seasonality. We assessed the effect of adding a slow-release fertilizer. We determined plant growth from 2010 to 2012 and gas exchange in the wet and dry season of 2012. Rainfall seasonality led to variations in... Tipo: Info:eu-repo/semantics/article Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000100008 Registros recuperados: 2 Primeira ... 1 ... Última

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