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Synopsis: Reviews information on grassland bird habitat requirements including a focus on the importance of grassland cover, size of contiguous patches, and other landscape factors. Some species require large blocks of unbroken grassland habitat for nesting. In general, where large blocks of undisturbed grassland occur, grassland birds are able to fulfill most of their requirements during the nesting season. For many bird species, these habitats provide winter and migration cover as well. The more grassland available in an area, particularly in large unbroken blocks, the greater the number of area-sensitive grassland birds the area is able to support. Pastures and crop fields also often provide attractive cover...
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This dataset represents the Connecticut River Watershed Boundary and is from the Watershed Boundary Dataset (WBD). The WBD defines the areal extent of surface water drainage to a point, accounting for all land and surface areas. Watershed Boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. The intent of defining Hydrologic Units (HU) for the Watershed Boundary Dataset is to establish a baseline drainage boundary framework, accounting for all land and surface areas. At a minimum, the WBD is being delineated and georeferenced to the USGS 1:24,000 scale topographic base map meeting National Map Accuracy...
Five watersheds, ranging in size from 29 to 49 acres, were instrumented in East -Central Ohio to investigate the hydrologic and water quality conditions occurring before, during, and after surface mining. Physical information was obtained for each watershed, and instrument ation was installed for obtaining hydrologic and weather data and water quality samples. Premining ground -water systems for each watershed were found to have two major perched aquifers within the top 250 feet. Shallowest ground water is commonly of the calcium bicarbonate type; whereas, water in the deeper aquifers is of variable type. Although dissolved solids concentration is generally 200 -600 mg /1, brackish or salty water is present in several...
    map background search result map search result map Grassland Birds Connecticut River Watershed Boundary Connecticut River Watershed Boundary Grassland Birds