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Abundance, movement and habitat use of Swainson's hawks in their wintering grounds, Argentina
(University of Florida, 2000)Knowledge of habitat use by a particular species is necessary in developing species conservation plans. Large-scale mortality of Swainson’s hawks (Buteo swainsoni) in Argentina during austral summer 1995-96 identified the ... -
Ecological and Human Dimensions of the Monk Parakeet Damage to Crops in Argentina
(University of Florida, 2011)The Monk Parakeet (Myiopsitta monachus) is considered among the most important bird pest species causing damage to crops in Argentina. In this study, I explored habitat features influencing abundance and damage of monk ... -
Evaluation of potassium soil tests and methods for mapping soil fertility properties in Iowa corn and soybean fields
(Iowa State University, 2006)Improving the use of soil testing in production agriculture may result in increased nutrient use efficiency and profitability. Three studies were conducted in Iowa with this general goal. One study assessed the impact of ... -
Impact of Crop and Residue Management on the Physical and Chemical Stabilization of Soil Organic Matter at Farm Level
(University of Nebraska, 2011)This dissertation explores changes over time in soil organic matter (SOM) stabilization of two irrigated production fields: a continuous maize sequence that was converted from no-till to conservation deep tillage (Site 1), ...