Human-caused changes in water use, emissions, and land cover have increasingly impacted the natural and built environments. As a result, the natural hydrologic cycle has been disrupted, causing changes in the quantity and quality of water, extreme events (i.e., droughts and floo…
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As global change disrupts historical patterns of variation in the abiotic and biotic environment, there is an urgent need to not only investigate the ecological impacts of these complex changes, but how these novel environments will affect the evolutionary trajectory of local po…
This study evaluated the impact of the WISDOM microfinance program on household coping capacity and well being in drought-affected regions of Ethiopia. The study assessed the effect of microfinance programs on household income, savings, assets, diet, nutritional status, and copi…
Objectives. (1) Determine the food procurement strategies utilized by the Fulani. (2) Identify the prinicipal and minor edible-wild plants used in the study area, with special attention to groups at risk; also determine dietary taboos associated with the dietary use of wild plan…
For many years, the Casamance was a self-sufficient region. Recently, this region has experienced food deficits because of the persistent drought. Given the shortage of rainfall over the last several years and the increasing accumulation of salt, the number of abandoned mangrove…
Point based biophysical simulation of forage production coupled with 1-km AVHRR-NDVI data was used to determine the feasibility of projecting forage condition 84 days into the future to support stocking decision making for livestock production using autoregressive integrated mov…
Interactions between climate variability, risk behavior and agricultural policies in Morocco are examined. The analysis employs a series of general equilibrium models that are linked together to account for risk. The model explicitly incorporates the main features of the economy…
The use of antisenescence compounds to precondition seedlings was studied in white pine (Pinus strobus L.). In a preliminary study, the effectiveness of eight compounds were tested by their ability to prevent desiccation-induced membrane leakage in Phaseolus vulgaris . When fed …
This dissertation explores the hypothesis that land-atmosphere interactions exert a significant control on aridity at the regional scale. Interactions related to topography, drought, and land use are considered, with a geographic focus on the Middle East. In the first study it i…
Droughts are occurring in many regions of the world with increased frequency and severity. Due to the recurrence and persistence of their impacts, the strategy of crisis intervention for mitigation has shown its limits. To deal not only with the immediate effects, but also with …
One of the critical factors behind the dismaying image of misery and conflict in Africa is water shortage, which leads to poor agricultural productivity and consequently famine. Africa might not be the driest continent on earth, because it has a reticulation of 54 drainage basin…
Snow water equivalent (SWE) measurements are critical for creating flood and drought outlooks in the spring. These data are abundantly collected throughout the winter and spring months and reported to organizations like the National Weather Service to use in their products. Orga…
As regiões semiáridas são caracterizadas por suas variações climáticas de alternância entre períodos com baixa pluviosidade e períodos com elevada precipitação. Esses locais, quando habitados, tornam-se palcos propícios à ocorrência de desastres. A presente investigação tem como…
Plant genomes have the capacity to change in response to abiotic stress and other environmental signals. In maize (Zea mays L.), enhanced genetic recombination in response to low temperature has been shown to alter recombination frequencies in maize (Shams-UI-Islam, 1956). The e…
The Long Term Soil Productivity (LTSP) program was founded to examine the effects of soil disturbance, specifically impacts to soil organic matter and soil compaction, on fundamental forest productivity. Both have significant impacts on forest ecosystem function and are heavily …
Drought stress has had devastating effects for vegetable growers world-wide, leading to much recent research focusing on the development of drought-resilient crops. The importance of the rhizosphere microbiome in plant performance under drought stress is under development, inclu…
This floristic inventory is focused on the upper portion of the Sespe Creek watershed in northern Ventura County, California. Sespe Creek is a Wild and Scenic River in the Los Padres National Forest (LPNF). The Sespe Creek has substantial intact riparian habitats and high levels…
Across the Southeastern United States (SEUS) growing populations are increasing demand on water resources and infrastructure. Understanding the long-term natural flow regime of rivers is critical to developing accurate models of water level variability needed for appropriate wat…
The global extent of tropical dry forests has rapidly diminished in recent decades due to a variety of threats, largely from human activity. Efforts to restore these forests require understanding of the various modes of regeneration and how they are impacted across a range of di…