Abstract Macroinvertebrate shredders consume preferably leaves conditioned by fungi and bacteria which offer greater palatability to them. Plant species in Cerrado present high concentration of chemical elements such as lignin and cellulose, phenols and tanins thus making them less attractive for shredd...
Brasil,
Dieta,
Preferencias Alimentarias,
Herbivoria,
Insectos/fisiología,
Melastomataceae/fisiología,
Hojas de la Planta/clasificación,
Hojas de la Planta/fisiología,
Ríos/química,
Sapotaceae/fisiología,
Árboles/clasificación,
Árboles/fisiología
Abstract During germination, orthodox seeds become gradually intolerant to desiccation, and for this reason, they are a good model for recalcitrance studies. In the present work, physiological, biochemical, and ultrastructural aspects of the desiccation tolerance were characterized during the germination...
Desecación,
Fabaceae/genética,
Fabaceae/crecimiento & desarrollo,
Fabaceae/fisiología,
Fabaceae/ultraestructura,
Germinación,
Proteínas de Plantas/metabolismo,
Semillas/genética,
Semillas/crecimiento & desarrollo,
Semillas/fisiología,
Semillas/ultraestructura,
Árboles/genética,
Árboles/crecimiento & desarrollo,
Árboles/fisiología,
Árboles/ultraestructura
Abstract Post-dispersal seed agents of mortality include pathogens, invertebrates, and vertebrates, which may shape tropical tree populations and communities. In this study I experimentally evaluated Dipteryx alata endocarp removal both in the interior and edge of Cerrado vegetation. Specifically, I simu...
Abstract The Cerrado Biome is considered one of the world's biodiversity hotspots because of its rich biodiversity, the high level of endemism and the increasing threat. The Cerrado is composed by a mosaic of different vegetation types, including physiognomies that vary from grasslands (campo limpo) to s...
Abstract Spondias tuberosa Arr., a fructiferous tree endemic to the northeast Brazilian tropical dry forest called Caatinga, accounts for numerous benefits for its ecosystem as well as for the dwellers of the Caatinga. The tree serves as feed for pollinators and dispersers as well as fodder for domestic ...
ABSTRACT Banded iron formations (BIF) have a particular vegetation type and provide a good model system for testing theories related to leaf phenology, due to unique stressful environmental conditions. As a consequence of the stressful conditions of BIF environment, we hypothesize that most species would...
Brasil,
Ecosistema,
Hierro/química,
Fotoperiodo,
Hojas de la Planta/fisiología,
Lluvia,
Estaciones del Año,
Suelo/química,
Temperatura,
Factores de Tiempo,
Árboles/fisiología,
Clima Tropical
ResumenEl bosque tropical seco (BTS) de la Península de Yucatán ha sido manejado por siglos, pero la relación del efecto del manejo sobre la diversidad de árboles no ha sido completamente entendida. El objetivo de este estudio fue evaluar el efecto del manejo forestal (aclareos, aprovechamiento y enr...
Análisis de Varianza,
Apicultura/métodos,
Biodiversidad,
Análisis por Conglomerados,
Conservación de los Recursos Energéticos/métodos,
Seguimiento de Parámetros Ecológicos/métodos,
Agricultura Forestal/métodos,
Bosques,
México,
Especificidad de la Especie,
Árboles/fisiología,
Clima Tropical
Abstract We tested the hypothesis of a negative relationship between vegetation characteristics and ant species richness in a Brazilian open vegetation habitat, called candeial. We set up arboreal pitfalls to sample arboreal ants and measured the following environmental variables, which were used as surr...
Abstract Palms, bromeliads and bamboos are key elements of tropical forests and understanding the effects of climate, anthropogenic pressure and forest structure on these groups is crucial to forecast structural changes in tropical forests. Therefore, we investigated the effects of these factors on the a...
A transformação logarítmica das relações bivariadas no cálculo das normas e dos índices do sistema integrado de diagnose e recomendação de nutrientes (DRIS) tem sido sugerida como uma forma de melhorar a acurácia do sistema, principalmente por diminuir a inconsistência na distribuição de fre...
