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Displaying 321 - 325 of 1605Complex transformation of the geomorphic regime of channels in the forefield of the Moravskoslezské Beskydy Mts.: Case study of the Morávka River (Czech Republic)
This paper presents a complex analysis of both the contemporary and the historic development of the geomorphic regime of the transformed reach of the Morávka River in the Czech Carpathians. The assessment concentrates on the conditions and causes of the channel development in the last c. 200years compared with the state of European channels, especially those of the Carpathian zone. The Morávka R. pattern has undergone a rapid change in the last 50years, particularly in connection with the active channel narrowing and massive incision.
Impacts of reforestation upon sediment load and water outflow in the Lower Yazoo River Watershed, Mississippi
Among the world's largest coastal and river basins, the Lower Mississippi River Alluvial Valley (LMRAV) is one of the most disturbed by human activities. This study ascertained the impacts of reforestation on water outflow attenuation (i.e., water flow out of the watershed outlet) and sediment load reduction in the Lower Yazoo River Watershed (LYRW) within the LMRAV using the US-EPA's BASINS-HSPF model. The model was calibrated and validated with available experimental data prior to its application.
Measuring impacts of community forestry program through repeat photography and satellite remote sensing in the Dolakha district of Nepal
During the 1990's community-based forest management gained momentum in Nepal. This study systematically evaluates the impacts that this had on land cover change and other associated aspects during the period 1990–2010 using repeat photography and satellite imagery in combination with interviews with community members.
Land exploitation resulting in soil salinization in a desert–oasis ecotone
Understanding the process of agricultural land expansion and its impact on soil properties is crucial for land management and environmental health. A desert–oasis ecotone is typically located between an oasis at the lower reach of inland rivers and neighboring desert in arid regions, and acts as an interactive zone between irrigated farmland and the natural desert ecosystem. The arid region of northwest China has experienced dramatic land exploitation since the 1960s and soil salinization has been a serious environmental problem ever since.
Seroprevalence and risk factors associated with zoonotic parasitic infections in small ruminants in the Greek temperate environment
A cross-sectional serological study was carried out to screen the sheep and goat population of Thessaly, Greece for evidence of infection with Toxoplasma, Toxocara, Leishmania, and Echinococcus and to determine the risk factors related to herd characteristics, herd management practices, farmer status, and the bioclimatic variables associated with these zoonotic parasitic infections. A total of 540 sheep and goat serum samples were examined. The seroprevalence of infection in all examined animals was 24.5% for Toxoplasma, 32% for Toxocara, 0% for Leishmania and 85.9% for Echinococcus.