Tropical Rainforest
Mostrando 13-24 de 77 artigos, teses e dissertações.
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13. Testing camera traps as a potential tool for detecting nest predation of birds in a tropical rainforest environment
ABSTRACT Identification of the predators of bird nests is essential to test ecological and evolutionary hypotheses and to make practical management decisions. A variety of nest monitoring devices have been proposed but many remain difficult to set up in the field. The aim of this study was to test camera traps as a potential tool to study predation of natura
Zoologia (Curitiba). Publicado em: 18/06/2018
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14. Tree community variation in a tropical continental island according to slope aspect and human interference
ABSTRACT Associating description of unrecorded tropical tree community structure to sampling approaches that can help determine mechanisms behind floristic variation is important to further the comprehension of how plant species coexist at tropical forests. Thus, this study had the goals of (i) evaluating tree community structure on the continental island of
An. Acad. Bras. Ciênc.. Publicado em: 2018-03
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15. Geochemical Signature of Amazon Tropical Rainforest Soils
ABSTRACT: Evaluating soil geochemical diversity in the Amazon Basin has been a challenge largely because most study sites have been at the edge of the basin and it is difficult to get samples in such a region. Here we show that even among the most weathered soils, physicochemical soil properties express lithology. Our results are based on topsoil samples col
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
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16. First record of galls in the tree fern Cyathea phalerata (Cyatheaceae) from a Tropical Rainforest in Brazil
Braz. J. Biol.. Publicado em: 08/01/2018
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17. Landslides Zonation Hazard: relation between geological structures and landslides occurrence in hilly tropical regions of Brazil
ABSTRACT This paper presents a new approach of landslides zonation hazard studies, based on an integrated study of structural data along with geomorphological and external factors, in a hilly regions of Brazil, covered by a tropical humid rain-forest, called Serra do Mar. The Serra do Mar consists of a hilly region along the east coast of Brazil, with high s
An. Acad. Bras. Ciênc.. Publicado em: 31/08/2017
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18. Can regional and local filters explain epiphytic bryophyte distributions in the Atlantic Forest of southeastern Brazil?
ABSTRACT Environmental conditions in distinct tropical rainforest phytophysiognomies can act as regional filters in determining the distribution of montane bryoflora likewise, local filters inherent to phorophyte species can have modulating influences. We analyzed the bryophyte communities in three phytophysiognomies of Atlantic Forest, in order to examine t
Acta Bot. Bras.. Publicado em: 05/09/2016
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19. Immunomodulatory and toxicological evaluation of the fruit seeds from Platonia insignis, a native species from Brazilian Amazon Rainforest
Abstract The “bacuri” (Platonia insignis Mart., Clusiaceae) is a native tropical fruit from the Brazilian Amazon and Northeast Regions. Its seeds are used to treat inflammatory diseases, diarrhea and skin problems in traditional medical practices. Regarding its widespread medicinal uses, it is important to evaluate the biological and toxicological potent
Rev. bras. farmacogn.. Publicado em: 2016-02
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20. Environmental parameters affecting the structure of leaf-litter frog (Amphibia: Anura) communities in tropical forests: a case study from an Atlantic Rainforest area in southeastern Brazil
Despite a recent increase of information on leaf litter frog communities from Atlantic rainforests, few studies have analyzed the relationship between environmental parameters and community structure of these animals. We analyzed the effects of some environmental factors on a leaf litter frog community at an Atlantic Rainforest area in southeastern Brazil. D
Zoologia (Curitiba). Publicado em: 2014-04
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21. Comparison of automatic traps to capture mosquitoes (Diptera: Culicidae) in rural areas in the tropical Atlantic rainforest
In several countries, surveillance of insect vectors is accomplished with automatic traps. This study addressed the performance of Mosquito Magnet® Independence (MMI) in comparison with those of CDC with CO2 and lactic acid (CDC-A) and CDC light trap (CDC-LT). The collection sites were in a rural region located in a fragment of secondary tropical Atlantic r
Mem. Inst. Oswaldo Cruz. Publicado em: 06/12/2013
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22. AFLP marker analysis revealing genetic structure of the tree Parapiptadenia rigida (Benth.) Brenan (Leguminosae-Mimosoideae) in the southern Brazilian Tropical Rainforest
Parapiptadenia rigida is a tropical early secondary succession tree characteristic of the Tropical Atlantic Rainforest. This species is of great ecological importance in the recovery of degraded areas. In this study we investigated the variability and population genetic structure of eight populations of P. rigida. Five AFLP primer combinations were used in a
Genet. Mol. Biol.. Publicado em: 03/09/2013
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23. Diversidade de bactérias diazotróficas e fixação biológica do nitrogênio na Mata Atlântica / Diversity of diazotrophic bacteria and biological nitrogen fixation in Brazilian Atlantic Rainforest
O presente trabalho estudou as relações entre as taxas de fixação biológica de nitrogênio (FBN), a composição e a diversidade da comunidade de bactérias diazotróficas de vida livre em três compartimentos: solo sob a copa, filosfera e dermosfera de diferentes espécies arbóreas, sendo que dermosfera foi avaliada em apenas duas espécies. As planta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2012
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24. Fluxos de óxido nitroso em solos com cobertura de Floresta Ombrófila Densa Montana na Serra dos Órgãos, Rio de Janeiro
Soil fluxes of N2O were determined over one year in montane tropical rainforest of southeastern Brazil with average annual rainfall of 2.8 m. Annual mean (± standard deviation) and median N2O fluxes were 3.0 ± 1.4 and 2.7 µg N m-2 h-1, respectively, is 5-10 times lower than mean values reported in literature for tropical rainforest soils in the Amazon bas
Quím. Nova. Publicado em: 2012