6 resultados para shorebirds
em DigitalCommons@University of Nebraska - Lincoln
Resumo:
Table of Contents: Encouraging Kids to Look Closely A falconer and a Friend connect young people with nature. Page 5 FOCUS: Citizen Science Citizens of all ages engage with refuges by collecting data about buds and birds or raising turtle hatchlings. Pages 8 to 13 Protected Stopovers Help Restore Shorebirds Monomoy National Wildlife Refuge, MA, plays a key role in researching and restoring red knots. Page 16 Leaders on the Move Relocation. Incentives. Motivations. Page 18
Resumo:
Table of Contents: Rebuilding after Hurricane Ike, page 3 Texas and Louisiana refuges were severely damaged in mid-September. A Crane Species Rebounding, page 5 At a Mississippi refuge, the world’s longest-running crane reintroduction program is succeeding. Focus on. . . Refuge System Wetlands, pages 8-13 The Refuge System manages wetlands to enhance their value for migratory waterfowl and shorebirds, threatened and endangered species and a myriad of native fish, wildlife, and plants. Fluttering Close to Extinction, page 17. Antioch Dunes Refuge is out to save the Lange’s metalmark butterfly.
Resumo:
Table of Contents: Least Bell’s Vireos Are Back, page 3 San Joaquin River National Wildlife Refuge hosted totally unexpected residents last year. Managing Ocean Wildlife, page 5 A new agreement should help in managing marine resources. Focus on . . . Endangered Species, pages 10-21 Whether it’s the fastest land mammal or the tiniest mussel, refuges work on behalf of endangered species. Peeping at Peeps, page 24 Shorebirds can be tough to identify. Classroom and fields trips helped.
Resumo:
Table of Contents: HD in 2007: A Year to Remember Ecology of AIV in Shorebirds New USDA Brucellosis Proposal TWS Seeks Comments on Draft Lead Policy Unusual Eagle Death New SCWDS Grad Students Tennessee Director Retiring 3rd International CWD Symposium Another SCWDS Student Award
Resumo:
Responding to a U.S. Federal court order to improve discharged wastewater quality, Augusta, Georgia initiated development of artificial wetlands in 1997 to treat effluents. Because of the proximity to Augusta Regional Airport at Bush Field, the U.S. Federal Aviation Administration expressed concern for potential increased hazard to aircraft posed by birds attracted to these wetlands. We commenced weekly low-level aerial surveys of habitats in the area beginning January, 1998. Over a one-year period, 49 surveys identified approximately 42,000 birds representing 52 species, including protected Wood Storks and Bald Eagles, using wetlands within 8 km of the airport. More birds were observed during the mid-winter and fall/spring migratory seasons (1,048 birds/survey; October - April) than during the breeding/post-breeding seasons (394 birds/survey; May - September). In winter, waterfowl dominated the avian assemblage (65% of all birds). During summer, wading birds were most abundant (56% of all birds). Habitat changes within the artificial wetlands produced fish kills and exposed mudflats, resulting in increased use by wading birds and shorebirds. No aquatic birds were implicated in 1998 bird strikes, and most birds involved could safely be placed within songbird categories. Airport incident reports further implicated songbirds. These findings suggested that efforts to decrease numbers of songbirds on the airport property must be included in the development of a wildlife hazard management plan. Seasonal differences in site use among species groups should also be considered in any such plan. Other wetlands within 8 km of the airport supported as many or more birds than the artificial wetlands. With proper management of the artificial wetlands, it should be possible to successfully displace waterfowl and wading birds to other wetlands further from the airport.
Resumo:
The Vancouver International Airport (YVR) is the second busiest airport in Canada. YVR is located on Sea Island in the Fraser River Estuary - a world-class wintering and staging area for hundreds of thousands of migratory birds. The Fraser Delta supports Canada’s largest wintering populations of waterfowl, shorebirds, and raptors. The large number of aircraft movements and the presence of many birds near YVR pose a wide range of considerable aviation safety hazards. Until the late 1980s when a full-time Wildlife Control Program (WCP) was initiated, YVR had the highest number of bird strikes of any Canadian commercial airport. Although the risks of bird strikes associated with the operation of YVR are generally well known by airport managers, and a number of risk assessments have been conducted associated with the Sea Island Conservation Area, no quantitative assessment of risks of bird strikes has been conducted for airport operations at YVR. Because the goal of all airports is to operate safely, an airport wildlife management program strives to reduce the risk of bird strikes. A risk assessment establishes the current risk of strikes, which can be used as a benchmark to focus wildlife control activities and to assess the effectiveness of the program in reducing bird strike risks. A quantitative risk assessment also documents the process and information used in assessing risk and allows the assessment to be repeated in the future in order to measure the change in risk over time in an objective and comparative manner. This study was undertaken to comply with new Canadian legislation expected to take effect in 2006 requiring airports in Canada to conduct a risk assessment and develop a wildlife management plan. Although YVR has had a management plan for many years, it took this opportunity to update the plan and conduct a risk assessment.