Current methods to estimate exposure of wildlife to pesticides from diet depend on a database of published residue concentrations on crop plants normalized to a standard application rate to obtain a residue from a unit dosage (RUD). This database, first published in the early 1970s, was updated in the 1990s. For each category of crops, maximum and mean residues are determined and used to extrap...

In recent years, a clearer understanding of the complexities of pastoral development has been arising on the basis of work done by African and international researchers and development practitioners. They are refuting the causality of notions normally attributed to pastoralism, such as land mismanagement and degradation. They are also showing how extensive pastoral production has been underesti...

1. The International context 1.1. Potential and Actual Carbon Storage Densities of the Drylands 1.2. Rationale for Sequestering Carbon in Drylands 1.3. Dryland Soils as a Carbon Sink 1.4. Creating an Economic Linkage between Dryland Restoration and Carbon Sequestration 1.5. Carbon Offsets: What are They and How do They Help? 1.6. Validation and Verification of Carbon Stores 2. Increasing Carbon...

The rangelands, as one of the largest dynamic biomes in the world, have very capabilities. Regulation of greenhouse gases in the Earth's atmosphere, particularly carbon dioxide as the main these gases, is one of these cases. The attention to rangeland, as cheep and reachable resources to sequestrate the carbon dioxide, increases after the Industrial Revolution. Rangelands comprise the large par...

Climate change and degradation of natural resources pose daunting challenges in arid semi-arid rangelands southern Mediterranean region. Overcoming these requires considerable man...

Mountain pocket gophers (Thomomy's talpoides) and plains pocket gophers (Geomys bursarius) are a problem to rangelands in Colorado. A new chlorophacinone (50 ppm) pelleted bait was applied to active burrow systems by hand baiting. Efficacy on the Geomys plot was 100%, while 94.73% of the Thomomys were controlled with the product. Introduction Pocket gophers, of the family Geomyidae, are indigen...

We study the role of bush encroachment control for a farmer's income and income risk in a stochastic ecological-economic model of grazing management in semi-arid rangelands. In particular, we study debushing as an instrument of risk management that complements the choice of an adaptive grazing management strategy for that sake. We show that debushing, while being a good practice for increasing ...