Hydrological behavior in reforested watersheds is different from that under other forms of cover. The variation may be related to aspects intrinsic species, planting density, physiological maturity, management system and climatic conditions. Periodically, anomalies such as the case La Ninã are observed, these responsible for alteration rainfall regime consequently generate water deficits southe...

Seasonal wetlands in the tropics are important habitats for local and migratory bird species. In northwestern Pacific of Costa Rica, Palo Verde National Park has one most seasonal Central America. The management history this wetland shown impact invasive plant species such as Parkinsonia aculeata L. whose cover extension canopy structure not only ecological niches species, but also hydrology. A...

To determine the biochemical basis of osmotic adjustment, seasonal and treatment differences in foliar water- soluble organic solutes and inorganic ions were investigated for two hardwood species that exhibited osmotic adjustment in a Throughfall Displacement Experiment at the Walker Branch Watershed near Oak Ridge, Tennessee. Leaf samples of overstory and understory chestnut oak (Quercus prinu...

Abstract Free overfalls are hydraulic structures used in flood control, water supply, irrigation, and flow measurements. The systems of free overfall depend on rectangular end shape. studies that dealt with triangular crest few almost non-existent. In this study, a end-shape design uses multiple linear regression (MLR) group method data handling (GMDH) methods for four models six sub-models. Th...

Abstract The present article investigates whether the drag coefficient of low density objects can be determined by free fall experiments with sufficient accuracy. Among other things, depends on flow velocity, which controlled in wind channels experiments. Free do not offer an experimental environment constant velocity. Especially later part movement gets relevantly influenced air deceleration. ...