Data/hora: 18/06/2024 17:29:49

Biblioteca(s): 	Embrapa Roraima; Embrapa Territorial.	
Data corrente: 	20/08/2013	
Data da última atualização: 	21/08/2013	
Autoria: 	SCHIETTI, J.; EMILIO, T.; RENNÓ, C. D.; DRUCKER, D. P.; COSTA, F. R. C.; NOGUEIRA, A.; BACCARO, F. B.; FIGUEIREDO, F.; CASTILHO, C. V. de; KINUPP, V.; GUILLAUMET, J-L.; GARCIA, A. R. M.; LIMA, A. P.; MAGNUSSON, W. E.	
Afiliação: 	JULIANA SCHIETTI, INPA; THAUSE EMILIO, INPA; CAMILO D. RENNÓ, INPE; DEBORA PIGNATARI DRUCKER, CNPM; FLÁVIA R. C. COSTA, INPA; ANSELMO NOGUEIRA, USP; FABRICIO B. BACCARO, INPA; FERNANDO FIGUEIREDO, INPA; CAROLINA VOLKMER DE CASTILHO, CPAF-RR; VALDELY KINUPP, HERBÁRIO EAFM; JEAN-LOUIS GUILLAUMET, MUSÉUM NATIONAL D'HISTOIRE NATURELLE FRANCE; ANA RAQUEL M. GARCIA, INPA; ALBERTINA P. LIMA, INPA; WILLIAM E. MAGNUSSON, INPA.	
Título: 	Vertical distance from drainage drives floristic composition changes in an Amazonian rainforest.	
Ano de publicação: 	2013	
Fonte/Imprenta: 	Plant Ecology & Diversity, v. 8, n. 5, p. 1-13, 2013.	
DOI: 	10.1080/17550874.2013.783642	
Idioma: 	Português	
Conteúdo: 	Background: Plant composition changes with topography and edaphic gradients that correlate with soil-water and nutrient availability. Data on soil water for the Amazon Basin are scarce, limiting the possibility of distinguishing between soil and soil-water influences on plant composition. Aim: We tested a new proxy for water table depth, the terrain height above nearest drainage (HAND), as a predictor of composition in trees, lianas, palms, shrubs, and herbs and compared HAND to conventional measures of height above sea level (HASL) and horizontal distances from nearest drainage (HDND). Methods: Plant-species composition in 72 plots distributed across 64 km2 of lowland evergreen terra firme forest was summarised using non-metric multidimensional scaling (NMDS). NMDS scores were regressed against estimates of HAND, HASL and HDND. Results: Plant composition was highly correlated with the vertical distance from water table, capturing up to 82% of variation. All life forms showed highest turnover rates in the zone with seasonally water-saturated soils, which can extend 350 m from stream margins. Conclusions: Floristic composition is closely related to water table depth, and HAND appears to be the most robust available topographical metric of soil-water gradients. Brazilian conservation laws protecting 30-m-wide riparian buffers are likely to be too narro	
Palavras-Chave: 	Beta diversity; Distance from stream; Height above nearest drainage; Plant species composition; Shuttle Radar Topography Mission; Soil hydrology; Terra fime forest; Tropical rain forest.	
Thesaurus Nal: 	Topography; Water table.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Territorial (CNPM)	
Exemplares: 	CNPM - (3630-1) - UPC - AP - DD - 13/040 - AP - 2013.040 - DIS
CPAF-RR - (14011-1) - UPC - AP - DD - S2013.157 -  - S2013.157 - DIS