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Displaying 1081 - 1085 of 1605Absentee landowners and conservation programs: Mind the gap
In this research report, we examine determinants of absentee landowner participation in USDA set-aside and cost share programs. Previous research on these landowners suggests they have a high interest in conservation yet minimal involvement in government conservation programs on their land (e.g. Petrzelka et al., 2009; Roggenbuck and Kushman, 1980). Our aim is to better understand this gap in hopes of attracting absentee landowners as participants to USDA conservation programs.
Effects of land use changes on badland erosion in clayey drainage basins, Radicofani, Central Italy
Hillslopes of the Radicofani area, in the upper valley of the Orcia River (southern Tuscany region, Italy), consist mainly of early Pliocene clayey sediments and are widely affected by frequent badland erosion. Reforestation with frugal conifers has been carried out in the area over the last 50years. The goal of the present study is to evaluate the impact of reforestation and land use change on erosion rates in nine small drainage basins through a multidisciplinary approach.
Mud crab ecology encourages site-specific approaches to fishery management
Little is known about the effects of mud crabs population patterns on their exploitation. We used complementary approaches (experimental, fisher-based) to investigate how small-scale variations in density, size and sex-ratio related to the ecology of S. serrata may impact fishing practices in New Caledonia. Crabs were measured/sexed across 9 stations in contrasted mangrove systems between 2007 and 2009. Stations were described and classified in different kinds of mangrove forests (coastal, riverine, and estuarine); vegetation cover was qualitatively described at station scale.
SAC-SMA a priori parameter differences and their impact on distributed hydrologic model simulations
Deriving a priori gridded parameters is an important step in the development and deployment of an operational distributed hydrologic model. Accurate a priori parameters can reduce the manual calibration effort and/or speed up the automatic calibration process, reduce calibration uncertainty, and provide valuable information at ungauged locations. Underpinned by reasonable parameter data sets, distributed hydrologic modeling can help improve water resource and flood and flash flood forecasting capabilities.
36year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea
Increasing dissolved organic carbon (DOC) concentrations in lakes, rivers and streams in northern mid latitudes have been widely reported during the last two decades, but relatively few studies have dealt with trends in DOC export. We studied the export of DOC from Finnish rivers to the Baltic Sea between 1975 and 2010, and estimated trends in DOC fluxes (both flow normalised and non-normalised). The study encompassed the whole Finnish Baltic Sea catchment area (301,000km²) covering major land use patterns in the boreal zone.