Photosynthetic capacity in a central Amazonian rain forest

Transient dominance in a central African rain forest

The large-crowned emergent tree Microberlinia bisulcata dominates rain forest groves at Korup National Park, Cameroon, along with two codominants, Tetraberlinia bifoliolata and T. korupensis. M. bisulcata has a pronounced modal size frequency distribution around ;110 cm stem diameter: its recruitment potential is very poor. It is a long-lived lightdemanding species, one of many found in African...

Temporal and Spatial Diversity and Distribution of Arboreal Carabidae (Coleoptera) in a Western Amazonian Rain Forest

Diversity of arboreal carabid beetles was sampled by fumigation in 100 3 x 3 m stations within a 100 x 1000 m terra firme forest plot in Ecuadorian Amazonia. Nine sampling dates from January 1994 to October 1996 yielded 2329 individuals belonging to 318 species of which more than 50 percent were undescribed species. A high percentage of the species sampled were rare; the proportion that occurre...

Asymptotic Height as a Predictor of Photosynthetic Characteristics in Malaysian Rain Forest Trees

Comparative studies of photosynthetic physiology in rain forest trees have focused on differences related to successional status, with the general finding that earlysuccessional species tend to show physiological characteristics of sun plants, while latesuccessional species show shade-plant characteristics. The present study examines analogous evolutionary responses to vertical gradients in lig...

Isolation by distance, not rivers, control the distribution of termite species in the Amazonian rain forest

Structure of Fish Assemblages in Amazonian Rain-Forest Streams: Effects of Habitats and Locality

We examined fish assemblage structure in three headwater rain-forest streams in the Urubu River Basin, Central Amazonia, as it relates to habitat heterogeneity. Riffles and pools, two types of stream habitat, were defined by current, depth, and substrate parameters, adjusted for Amazonian stream characteristics. We assessed species richness, composition, and abundance as they varied between rif...