Woodland Savanna
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Temporal changes in species composition, diversity, and woody vegetation structure of savannas in the Cerrado-Amazon transition zone
ABSTRACT Vegetation in the transition between tropical forest and savanna is hyperdynamic and there is evidence that in the absence of fire, forest advances over savanna. Between 2008 and 2013 we evaluated changes in species composition and diversity and in the structure of the woody vegetation of savanna physiognomies in the transition between the Cerrado a
Acta Bot. Bras.. Publicado em: 15/01/2018
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2. Functional antagonism between nitrogen-fixing leguminous trees and calcicole-drought-tolerant trees in the Cerrado
ABSTRACT The Cerrado is the largest savanna of South America and its physiognomy varies from savanna to woodlands. There are two main types of woodlands in the Cerrado: dystrophic woodlands, dominated by N-fixing leguminous trees (LEG), and mesotrophic woodlands dominated by non-leguminous drought-tolerant trees (DRY), which are calcicoles and sensitive to A
Acta Bot. Bras.. Publicado em: 30/01/2017
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3. Comparative leaf anatomy and morphology of some Brazilian species of Crotalaria L. (Leguminosae: Papilionoideae: Crotalarieae)
Anatomical characters often provide strong taxonomic evidence and many times help define species whose morphological limits are in question. This study aimed to survey characters of the leaf anatomy of 16 species of Crotalaria L. occurring mostly in the cerrado (savanna) of central Brazil and in areas of restinga (coastal woodland, or sandy forest) along the
Acta Bot. Bras.. Publicado em: 2014-12
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4. Habitat use and movements of Glossophaga soricina and Lonchophylla dekeyseri (Chiroptera: Phyllostomidae) in a Neotropical savannah
The greatest current threat to terrestrial fauna is continuous and severe landscape modification that destroys and degrades animal habitats. This rapid and severe modification has threatened species, local biological communities, and the ecological services that they provide, such as seed dispersal, insect predation, and pollination. Bats are important polli
Zoologia (Curitiba). Publicado em: 2014-06
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5. Mortality, recruitment and growth of the tree communities in three forest formations at the Panga Ecological Station over ten years (1997-2007)
The area evaluated in this study was a continuous stretch comprising three vegetation formations: gallery forest, semideciduous seasonal forest and cerradão (woodland savanna). The aim of this study was to examine the tree community dynamics in a forest gradient-from gallery forest to cerradão-at Panga Ecological Station, in the city of Uberlandia, located
Acta Bot. Bras.. Publicado em: 2014-06
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6. Effects of gut passage on the germination of seeds ingested by didelphid marsupials in a neotropical savanna
We analyzed the effects that passage through the guts of seven didelphid species had on the seed germination of 10 plant species. This study was conducted in an area of riparian woodland in a cerrado (savanna) reserve in southeastern Brazil. We found seeds of 23 angiosperm species in 427 fecal samples obtained from seven didelphid species. The plant families
Acta Bot. Bras.. Publicado em: 2013-09
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7. Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west
This study describes the influence of edaphic factors on the floristic composition of an area of cerradão (woodland savanna) in the city of Campo Grande, located in the Brazilian central-west. In 10 plots (5 × 20 m each), we evaluated all trees with a diameter at breast height > 4.77 cm. Soil samples were analyzed for each plot in order to determine edaphi
Acta Bot. Bras.. Publicado em: 2013-06
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8. Diversidade funcional e funcionamento da comunidade : teste em uma área de cerrado
O funcionamento das comunidades deve ser afetado pela diversidade funcional, uma vez que mede a extensão da complementaridade no uso de recursos. Testamos se havia relação entre diversidade funcional das espécies arbóreas e o funcionamento da comunidade em escala fina, usando a FD como medida de diversidade funcional e a taxa de decomposição da serapi
Publicado em: 2011
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9. Detalhamento de áreas de savana arborizada no bioma Cerrado a partir da análise de séries temporais MODIS EVI para o período de 2004 a 2008 / Details of the savanna woodland in Cerrado based on the analysis of time series MODIS EVI for the period 2004 to 2008
Mapeamentos de cobertura e uso da terra são de fundamental importância para a efetiva gestão territorial, monitoramento ambiental e para o correto entendimento quanto à estrutura e funcionamento dos ecossistemas. No caso do bioma Cerrado, importante avanço neste sentido foi o mapeamento realizado no âmbito da iniciativa PROBIO (Projeto de Conservação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/03/2010
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10. Orb-weaving spider diversity in the Iberá Marshlands, Argentina
The Iberá Marshlands RAMSAR reserve, in the northeast of Argentina, is one of the largest and most important wetlands of America. In this study we assess orb-weaving spider (Araneae: Orbiculariae) diversity in this reserve, analyzing different facets of local diversity (species richness, diversity, evenness and taxonomic distinctness), and the contribution
Neotropical Entomology. Publicado em: 2010-08
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11. Impact and regeneration mechanism after invasion by Pteridium arachnoideum (Kaulf.) Maxon (Dennstaedtiaceae) in savanna woodland areas, southwestern São Paulo State / Impacto da invasão e mecanismos de regeneração natural do cerradão em áreas ocupadas por Pteridium arachnoideum (kaulf.) Maxon (Dennstaedtiaceae) no sudoeste do Estado de São Paulo
The genus Pteridium comprises bracken species recognized by large fronds and a rhizome system that allows their fast expansion. Bracken presents an elevated biomass production throughout the year, that increases fire occurrence and release chemical compounds that are considered allelopathic. Nowadays, species of the genus Pteridium are well known as problem-
Publicado em: 2010
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12. Detalhamento de áreas de savana arborizada no bioma Cerrado a partir da análise de séries temporais MODIS EVI para o período de 2004 a 2008 / Details of the savanna woodland in Cerrado based on the analysis of time series MODIS EVI for the period 2004 to 2008
Mapeamentos de cobertura e uso da terra são de fundamental importância para a efetiva gestão territorial, monitoramento ambiental e para o correto entendimento quanto à estrutura e funcionamento dos ecossistemas. No caso do bioma Cerrado, importante avanço neste sentido foi o mapeamento realizado no âmbito da iniciativa PROBIO (Projeto de Conservação
Publicado em: 2010