The Amazonian environment is changing rapidly, due to deforestation, in the short term, and, climatic change is projected to alter its forest cover, in the next few decades. These modifications to the, environment have been altering the dynamics of infectious diseases which have natural foci in the, Amazonian biome, especially in its forest. Current land use practices which are changing the, ep...

The InVEST hydrologic models were designed to represent the dominant processes of sediment/nutrient delivery and retention by land use/ land cover (LULC). Since they are not standard rainfall-runoff models, classical calibration and testing methods are not always applicable. Testing and calibration were particularly difficult in our study region due to: i) the absence of local data (e.g. in-str...

The impact of three treatment strategies for Trypanosoma evansi control on horse mortality in the Brazilian Pantanal based on four size categories of cattle ranches is explored. The region's 49,000 horses are indispensable to traditional extensive cattle ranching and T. evansi kills horses. About 13% of these horses would be lost, annually, due to T. evansi if no control were undertaken. One pr...

Ever-increasingly attentions are drawn to the provision of multicast service over mobile IP networks. Multicast over mobile networks have to face against the scalability problem. In the paper, a new mobile multicast scheme, called mobile scalable recursive multicast is proposed. Our approach is based on the concept of dynamic ranching node-based multicast tree, where a pair of branching node me...

We used carbon and nitrogen isotopes to investigate changes in the diet of California condors from the Pleistocene to the recent. During the Pleistocene, condors from California fed on both terrestrial megafauna and marine mammals. Early accounts reported condors feeding on the carcasses of marine mammals, but by the late 1700s, condor diets had shifted predominantly to terrestrial animals, fol...

Luncheon Nils Odendaal, CEO, NamibRand Nature Reserve, southern Namibia e NamibRand Nature Reserve is one of Africa's largest privately owned conservation areas and its story is one of hardship redirected into a shining example for the world. A er droughts in the 1980s, ranches in this arid landscape were failing. NamibRand founder Albi Bruckner started buying contiguous farms and created a con...

The Brazilian Amazon frontier shows how remarkable leadership can work towards increased agricultural productivity and environmental sustainability without new greenhouse gas emissions. This is due to initiatives among various stakeholders, including national and state government and agents, farmers, consumers, funding agencies and non-governmental organizations. Change has come both from botto...

ABSTRACT Cattle in wetlands impact water quality through waste excretion, which deposits excess nutrients, as well decreasing the biomass and height of vegetation trampling herbivory. Amphibians are sensitive to these changes due their porous skin reliance on vegetated microhabitats. Previous studies examining effect cattle amphibians report conflicting results, exemplifying need avoid overgene...