Tropical bird assemblages display patterns of high alpha and beta diversity and, as tropical birds exhibit strong habitat specificity, their spatial distributions are generally assumed to be driven primarily by environmental heterogeneity and interspecific interactions. However, spatial distributions of some Amazonian forest birds are also often restricted by large rivers and other large-scale ...

ABSTRACT Understorey herbs form a diverse and understudied plant assemblage in tropical forests. Although several studies research teams have long been dedicated to the study of this conspicuous vegetation component Amazonia, no effort unify data has undertaken date. In contrast trees other life forms for which major compilations already exist, unified database is still lacking. Part problem de...

Forest understorey contains remarkable plant diversity, contributing to the heterogeneous environments for other biotic gatherings and soil supplement aggregations. Nonetheless, biomass of vegetation is neglected because lack appropriate allometric equations without which there are uncertainties in estimation. This study was aimed at developing multispecies that will be used estimate abovegroun...

Selective logging is the most prevalent land-use change in the tropics. Despite the resulting degradation of forest structure, selectively logged forests still harbor a substantial amount of biodiversity leading to suggestions that their protection is the next best alternative to conserving primary, old-growth forests. Restoring carbon stocks under Reducing Emissions from Deforestation and Fore...

The effects of small-scale disturbances (80 30-cm plots) of canopy and grazers on intertidal assemblages were investigated in this 4-year experiment on sheltered rocky shores on the Swedish west coast. Canopy disturbances due to ice scouring were mimicked by removal of adult plants of the seaweed Ascophyllum nodosum (L.) Le Joli. Density of the main epilithic grazing gastropods, Littorina spp.,...

1. Resource selection specialization may increase vulnerability of populations to environmental change. One environmental change that may negatively impact some populations is the broad decline of quaking aspen Populus tremuloides, a preferred nest tree of cavity-nesting organisms who are commonly limited by nest-site availability. However, the long-term consequences of this habitat change for ...

In a previous research note (Coopersmith and Hall 1999) we described the objectives and initial research findings of the Siphon Creek (Fort St. John) Installation of Experimental Project (EP) 1077. A second EP1077 installation, Bear Mountain, will be the focus of the present report. The previous research note (PG-17) concentrated on the effects of overtopping aspen canopies on understorey spruc...

1. Over three growing seasons, we tested how an invasive tree species ( Acer platanoides ) affected native plant growth in understorey communities of a suburban forest in central New Jersey, USA. We planted similar aged and sized saplings ( ≥ 0.25 m tall) into experimental plots identified with one of three treatments (0%, 25% and 50% of total stems are invasive species) and hypothesized native...

Methods for the control of wandering Jew (Tradescantia fluminensis) are reviewed and one selected to eradicate this weed from a forest remnant near the lower Rangitikei River. The botanical importance of the forest is assessed in the context of Manawatu Plains Ecological District. Its future conservation management is related to other problem weeds, notably Cobaea scandens, Solanum jasminoides,...