9 research outputs found
Impact of the Agricultural Sector on the Arkansas Economy
Agriculture historically has been one of the primary sectors of the Arkansas economy. Agriculture is defined as the sum of agricultural, forestry, and fisheries production and processing activities unless otherwise specified. Not only does agriculture contribute to the economy through direct agricultural production and added value processing, it also plays an important role through the economy’s other sectors. Utilizing data from the United States Bureau of Economic Affairs and the State of Arkansas, the economic impact of agriculture on the Arkansas economy was estimated for the latest year available, 1999. Gross State Product (GSP) information for Arkansas was compared with that of other states in the southeastern U.S. to give a measure of the relative importance of agriculture in Arkansas compared with other states. The total impact of agriculture (direct, indirect, and induced effects) on added value, employment, and wage income was estimated by employing the Impact Analysis for Planning System (IMPLAN). Economic impacts of agricultural production and processing were estimated for agriculture as a whole and also separately for the crop sector, the livestock sector, and the forestry sector
Factors Influencing the Green House Gas Footprint of US Dairy Farms
Environmental Economics and Policy, Livestock Production/Industries,
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Distribution of bed sediment on Clear Creek after removal of Saeltzer Dam
Saeltzer Dam was removed from Clear Creek in October 2000 to restore ten miles of upstream habitat access to spring run chinook salmon and steelhead trout. Since the dam removal, an estimated 50,000 cubic yards of sediment has eroded from the banks and channel at the former dam site. Some of the eroded sediment has been deposited downstream on Renshaw’s Riffle, a stretch formerly known for its spawning habitat, aggrading the bed up to 2.5 ft. To evaluate characteristics of the sediment deposition, we performed roughly 60 pebble counts and created a facies map for a 1.43 mi stretch downstream of the former dam site. We created maps in ArcMap GIS using the data to depict changes in gravel bar location, the d50 (the size at which 50% of the pebbles are finer) and the composition of percent-finer-than-8 mm material for each pebble count along the length of our study area. Five pebble counts were performed at transects in Renshaw’s Riffle, at sites with existing cross-sectional data. We found that finer-than-8 mm sediments comprise over 20% of the substrate in parts of the riffle. An earlier facies map was created in 2001 by visual assessment, but we were unable to compare our results due to incompatible methods. We hope the pebble count serves as an easily replicable method from which to compare future surveys of the area