Results: 303

Ant communities (Hymenoptera: Formicidae) in urban centers of the Alto Tietê, São Paulo, Brazil

Arq. Inst. Biol; 82 (), 2015
The Alto Tietê municipalities have rich remnants of Dense Rain Forest in their vicinities. Considering the environmental importance of the Alto Tietê as water source and that of ants as components of tropical biodiversity, this paper aimed at describing the diversity, composition and similarity of the ...

Occupational accidents footprint: new concept linked to chain of custody in sustainable forest management

Cienc. Trab; 16 (51), 2014
The study, due to inconveniences in previous methods, proposes the new concept of "occupational accidents footprint", and its implementation and traceability in the chain of custody (CoC) related with sustainable forest management (SFM), through specially elaborated labor accident indicators. Data from p...

Diversity of reproductive ecological groups in semideciduous seasonal forests

Biosci. j. (Online); 30 (6), 2014
Ecosystem degradation leads to loss of interactions between animals and plants, and changes in frequency of pollination systems, dispersal modes and sexual systems of plants. The objective of the present work was to compare the reproductive ecological groups of tree species among semideciduous seasonal f...

Impact of simulated acid rain on soil microbial community function in Masson pine seedlings

Electron. j. biotechnol; 17 (5), 2014
Background Accompanying its rapid economic development and population growth, China is the world's third largest acid rain region, following Europe and North America. The effects of acid rain on forest ecosystem were widely researched, including the growth, the nutrient of the leaf and soil, and so on. H...

Hormigas arbóreas del Parque Nacional Natural Gorgona (Pacífico de Colombia)

Rev. biol. trop; 62 (supl.1), 2014
Arboreal ants of Gorgona National Park (Pacific of Colombia). Despite the strong microclimatic fluctuations, scarcity of nesting sites and unpredictable prey availability in open environments, ants are the dominant invertebrates in the tropical forest canopy. This study focused on the arboreal ants in Go...

Distribución y abundancia de murciélagos en bosques con diferente grado de intervención en el Parque Nacional Natural Gorgona (Colombia)

Rev. biol. trop; 62 (supl.1), 2014
Bats are important for maintenance of ecological processes in tropical forests since they are among the most abundant mammals and play a crucial role in tropical succession. Due to the importance of bats to forest dynamics and to the lack of ecological information, a study was conducted to quantify the v...

Effects of crowding and sex on fecal cortisol levels of captive forest musk deer

Biol. Res; 47 (), 2014
BACKGROUND: Restricted space and close contact with conspecifics in captivity may be stressful for musk deer, as they are highly territorial and solitary in the wild. So we tested the effects of crowding on stress of forest musk deer (Moschus berezovskii) in heterosexual groups, using fecal cortisol anal...

Does a small forested area contribute to enhance species richness and diversity of fish assemblage at an urban stream?

Acta sci., Biol. sci; 35 (4), 2013
Conservation Units (CU) aim to contribute to the balance between human and environmental demand, by protecting natural resources and biological communities. In this study we examined the differences in the attributes of the fish community in four stretches of an urban stream, two inside and two outside t...

Dynamics of the production and decomposition of litterfall in a brazilian northeastern tropical forest (Serra de Itabaiana National Park, Sergipe State)

Acta sci., Biol. sci; 35 (2), 2013
This study was carried out in the Serra de Itabaiana National Park from October, 2006, to October, 2007. The main objective was to quantify litterfall production and analyze decomposition rates in a tropical seasonal semideciduous forest. Forty 0.25 m² collectors were used to quantify the litterfall and...