Results: 303

Morfoecología de gremios en escarabajos (Coleoptera: Passalidae) en un gradiente altitudinal en robledales de la Cordillera Oriental, Colombia

Rev. biol. trop; 64 (1), 2016
ResumenLos escarabajos pasálidos son componentes importantes de los bosques tropicales debido a que facilitan el reciclaje de nutrientes propios de madera en descomposición, ya sea por acción directa (consumo) o indirecta (facilitando la acción de otros organismos). En la actualidad los estudios ecol...

Biomasa y carbono total almacenado en robledales del sur de los Andes Colombianos: aportes para el enfoque REDD+ a escala de proyectos

Rev. biol. trop; 64 (1), 2016
ResumenLas estimaciones de carbono en bosques tropicales, es muy importante para entender el papel de estos ecosistemas en el ciclo de este elemento. Este conocimiento permite apoyar y soportar las decisiones y la formulación de estrategias de mitigación y adaptación para reducir las emisiones de gase...

ESTRUCTURA Y COMPOSICIÓN FLORÍSTICA DE LA RESERVA FORESTAL - INSTITUCIÓN EDUCATIVA CAJETE, POPAYÁN (CAUCA)

Rev. luna azul; (41), 2015
Se caracterizó la estructura y composición florística del remanente boscoso ubicado en la Reserva Forestal de la Institución Educativa Cajete, Popayán (Cauca). El inventario florístico se hizo mediante colecta libre realizada en el interior y la periferia del bosque. Se registraron en total 164 esp...

The impact of anthropogenic food supply on fruit consumption by dusky-legged guan (Penelope obscura Temminck, 1815): potential effects on seed dispersal in an Atlantic forest area

Braz. j. biol; 75 (4), 2015
Abstract Frugivorous birds are important seed dispersers and influence the recruitment of many plant species in the rainforest. The efficiency of this dispersal generally depends on environment quality, bird species, richness and diversity of resources, and low levels of anthropogenic disturbance. In thi...

Occupational safety indicators for forest operations, sawmilling and wood-based panels manufacture: an international benchmarking

Cienc. Trab; 17 (53), 2015
BACKGROUND: Given the lack of updated comparison to establish safety levels at where Chilean forestry and wood companies are facing with foreign competitors, a study of international statistical benchmarking was performed to find the rankings on occupational accidents and international excellence levels ...

Evaluación de la sustentabilidad en espacios rurales relacionados con el ecoturismo. estudio de caso en la selva lacandona, chiapas,México

Rev. luna azul; (40), 2015
Esta investigación realiza una evaluación ex-post de la sustentabilidad en espacios rurales relacionados con el ecoturismo, centrada en un estudio comparativo de tres empresas enclavadas en la Reserva de la Biosfera Montes Azules (REBIMA) y una empresa más ubicada fuera de ella, todas en el municipio ...

What happens to the soil seed bank 17 years after clear cutting of vegetations?

Rev. biol. trop; 63 (2), 2015
Seed banks play an important role in the resilience of potential anthropogenic areas and are influenced by seasonal variation. The spatial and temporal heterogeneity of the forests influences the richness and density of the soil seed bank, but there is a hypothesis that such influence can be changed in a...

Influence of microhabitats on the performance of herbaceous species in areas of mature and secondary forest in the semiarid region of Brazil

Rev. biol. trop; 63 (2), 2015
The conditions for plant establishment in mature forest are different from those found in disturbed areas. In dry environments, the herbaceous cover is the most important in the recolonization of deforested areas. It can, therefore, act as an ideal biological group for assessing how changes in habitat he...

Avaliação soroepidemiológica de animais sentinelas para a febre maculosa brasileira e correlação com a fragmentação vegetal na periferia sul da região metropolitana da cidade de São Paulo

A Febre Maculosa Brasileira (FMB) é uma zoonose que tem como agente patogênico bactérias da espécie Rickettsia rickettsii, que são transmitidas por carrapatos da espécie Amblyomma aureolatum na Região Metropolitana de São Paulo, onde a letalidade da doença pode chegar a 80 por cento . Carrapatos...

In vitro antioxidant properties, free radicals scavenging activities of extracts and polyphenol composition of a non-timber forest product used as spice: Monodora myristica

Biol. Res; 48 (), 2015
BACKGROUND: Excessive production of free radicals causes direct damage to biological molecules such as DNA, proteins, lipids, carbohydrates leading to tumor development and progression. Natural antioxidant molecules from phytochemicals of plant origin may directly inhibit either their production or limit...