Treesearch

The literature on forest entomology in the Luquillo Mountains is reviewed, and information on basic insect ecology insect pest, and systematics is provided.

From European settlement to the 1940s, the Bisley watersheds of the Luquilio Experimental Forest, Puerto Rico, were used for agroforestry, selective logging, charcoal production, and timber management. Each of these activities affected different parts of the landscape in different ways and at different times. After nearly 50 years of unhindered regeneration, six impacts remain apparent: ( 1 ) shifts in the dominance and age structure of canopy species; (2) immigration of subcanopy crop species and the establishment of banana as a riparian dominant; (3) increases in the importance of canopy...

AzadirachJa indica A. Juss., commonly known as neem in English and Hindi and margosa and paraiso de India in Spanish, is a medium-sized to large tree characterized by its short, straight bole, furrowed, dark-brown to gray bark. and dense, rounded crown of pinnate leaves. Native to south Asia, neem is widely planted and naturalized in semiarid areas throughout Asia and Africa. It has been introduced to several Caribbean islands where it is grown principally for shade, fuelwood, and numerous nonwood products obtained from the leaves, fruits, and bark. These include medicinal and insecticidal...

Tropical soils and vegetation represent globally significant sources of a range of atmospheric gases, including CO2, CO, N20, NO, CH4, and volatile organic compounds. Conversion of tropical forests to agriculture and other uses, and intensification of agricultural practices in both forest and savanna areas are occurring very rapidly; yet the impacts of these land use practices on biogeochemical cycles, trace gas emissions, and atmospheric chemistry are not well understood. We present early results of IGAC's Biosphere-Atmosphere Trace Gas Exchange in the Tropics (BATGE) Activity that...