Resource Documents by Katzner, Todd
Katzner, Todd; Brandes, David; Miller, Tricia; et al.
Topography drives migratory flight altitude of golden eagles: implications for on-shore wind energy development
Summary: 1. Wind power is a fast-growing industry with broad potential to impact volant wildlife. Flight altitude is a key determinant of the risk to wildlife from modern horizontal-axis wind turbines, which typically have a rotor-swept zone of 50–150 m above the ground. 2. We used altitudinal GPS data collected from golden eagles Aquila chrysaetos tracked using satellite telemetry to evaluate the potential impacts of wind turbines on eagles and other raptors along migratory routes. Eagle movements during migration were . . . Complete article »
Katzner, Todd; et al.
Golden Eagle fatalities and the continental-scale consequences of local wind-energy generation
Abstract. Renewable energy production is expanding rapidly despite mostly unknown environmental effects on wildlife and habitats. We used genetic and stable isotope data collected from Golden Eagles (Aquila chrysaetos) killed at the Altamont Pass Wind Resource Area (APWRA) in California in demographic models to test hypotheses about the geographic extent and demographic consequences of fatalities caused by renewable energy facilities. Geospatial analyses of δ2H values obtained from feathers showed that ≥25% of these APWRA-killed eagles were recent immigrants to the . . . Complete article »
Katzner, Todd; Brandes, David; Lanzone, Michael; Miller, Trish; and Ombalski, Dan
Raptors and Wind Energy Development in the Central Appalachians
There is little current available information as to how wind energy projects in the central Appalachians area will affect bird populations (NRC, 2007). However, it is known that diurnal raptors are generally at higher risk for collision with turbines than are many other avian species (NWCC, 2004). Furthermore, potential cumulative effects on birds are broader than just those from direct collisions. In particular, increased energetic costs of migration, avoidance of preferred migration pathways, and change or loss of migration habitat . . . Complete article »
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