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	Provedor de dados BABT (2) Acta Amazonica (1) Biota Neotropica (1) Rev. Bras. Bot. (1) Autor Bernardes,Carolina (1) Capellotto Costa,Flávia Regina (1) Cintra,Renato (1) Gondim,Fábio R (1) Kropf,Marcela S (1) PITKÄNEN,Timo (1) RUOKOLAINEN,Kalle (1) Ramos,Flavio Nunes (1) SUOMINEN,Lassi (1) Santos,Flavio Antonio Maës (1) Scariot,Aldicir (1) TUOMISTO,Hanna (1) Vieira,Daniel Luis Mascia (1) Ximenes,Arimatéa de Carvalho (1) Mais... Palavra-chave Canopy openness (5) Amazonia (1) Atlantic forest (1) Brazil (1) Cation content (1) Cattle grazing (1) Edges (1) Fragmentation (1) Iriartea deltoidea (1) Leaf litter (1) Lianas (1) Litter depth (1) Multiple regression (1) Palm community (1) Pebas Formation (1) Plant cover (1) Pteridophytes (1) Reserva Ducke (1) Seasonal forest (1) Soil (1) Mais... Tipo do documento Info:eu-repo/semantics/article (5) Ano 2015 (1) 2011 (1) 2008 (1) 2006 (1) 2005 (1) País Brazil (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Forest spatial heterogeneity and palm richness, abundance and community composition in Terra Firme forest, Central Amazon Rev. Bras. Bot. Cintra,Renato; Ximenes,Arimatéa de Carvalho; Gondim,Fábio R; Kropf,Marcela S. The mechanisms that maintain tree diversity in tropical rain forests are still in debate. Variations in forest structural components produce forest microenvironmental heterogeneity, which in turn may affect plant performance and have been scarcely analyzed in the Amazon. Palms are widespread in the Neotropical rainforests and have relatively well known taxonomy, apart from being ecologically and economically important. The understanding of how palms respond to variation in the forest structural components may help to explain their abundance and richness in a given area. In this study, we describe a palm community and analyze how it is affected by forest microenvironmental heterogeneity. In a pristine "Terra Firme" forest at Reserva Ducke, Manaus, we... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazonia; Canopy openness; Leaf litter; Palm community; Reserva Ducke. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042005000100007 Similar understorey structure in spite of edaphic and floristic dissimilarity in Amazonian forests Acta Amazonica SUOMINEN,Lassi; RUOKOLAINEN,Kalle; PITKÄNEN,Timo; TUOMISTO,Hanna. Forest structure determines light availability for understorey plants. The structure of lowland Amazonian forests is known to vary over long edaphic gradients, but whether more subtle edaphic variation also affects forest structure has not beenresolved. In western Amazonia, the majority of non-flooded forests grow on soils derived either from relatively fertile sediments of the Pebas Formation or from poorer sediments of the Nauta Formation. The objective of this study was to compare structure and light availability in the understorey of forests growing on these two geological formations. We measured canopy openness and tree stem densities in three size classes in northeastern Peru in a total of 275 study points in old-growth terra firme forests... Tipo: Info:eu-repo/semantics/article Palavras-chave: Canopy openness; Iriartea deltoidea; Pebas Formation; Pteridophytes; Stem density. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000400393 Environmental variables and Piper assemblage composition: a mesoscale study in the Madeira-Purus interfluve, Central Amazonia Biota Neotropica Bernardes,Carolina; Capellotto Costa,Flávia Regina. This study aimed to determine the effects of canopy openness, litter depth, soil cation content and texture on Piper assemblage composition at a mesoscale. Piper assemblage composition and environmental variables were inventoried in 41 0.125 ha (250 × 5 m) plots placed in a terra firme forest located in the Madeira-Purus interfluve, Central Amazonia. Ordination of the 41 plots by Non-metric Multidimensional Scaling (NMDS) in one dimension captured 58% of the floristic variation and was used as the response variable in multiple regression models. Environmental variables explained 39% of the variation in Piper assemblage composition, which was significantly related to litter depth, soil texture and canopy openness, but not to the cation content. Effects of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Canopy openness; Cation content; Litter depth; Multiple regression; Soil; Terra firme forest. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000300006 Environmental variables and tree population structures in deciduous forests of central Brazil with different levels of logging BABT Vieira,Daniel Luis Mascia; Scariot,Aldicir. Population structures of six tree species in three fragments of intact seasonal deciduous forest and three fragments disturbed by logging were studied in the northeastern Goiás. Forty random 400 m² plots were allocated in each fragment to survey plant population structures, number of stumps, cattle feces, burnt logs, and canopy openness. Soil cover by life forms was estimated in 1m² sub-plots. Lianas were abundant in intermediately logged fragments and invasive herbs in the most disturbed fragment. Cattle avoided dense herbaceous strata, such as liana tangles. Cavanillesia arborea, Eugenia dysenterica and Swartzia multijuga trees occurred at very low densities in all the fragments and their seedlings were practically absent, which might endanger their... Tipo: Info:eu-repo/semantics/article Palavras-chave: Seasonal forest; Canopy openness; Plant cover; Cattle grazing; Lianas. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000200024 Microclimate of Atlantic forest fragments: regional and local scale heterogeneity BABT Ramos,Flavio Nunes; Santos,Flavio Antonio Maës. The aim of this work was to investigate whether (i) the organisms within different fragments, on regional scale (separated by up to 100 km), could be submitted to similar climatic conditions (rainfall and temperature), and whether (ii) the edge formation in forest fragments could stimulate microclimatic changes (canopy cover, air temperature and soil humidity), on local scale. The organisms within different fragments, on regional scale, were submitted to different climatic conditions, and the edge formation in the forest fragment stimulated microclimatic changes, on local scale, although in a heterogenic way. Not just the distance from the edge influenced the microclimatic differences. Probably, the edge age, location, the matrix structure, as well as, gap... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic forest; Canopy openness; Edges; Fragmentation; Soil moisture; Temperature. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000700011 Registros recuperados: 5 Primeira ... 1 ... Última

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