Road to Success, August 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, January 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, October 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, November 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, December 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, December 2005

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, February 2006

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, March 2006

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, May 2006

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Road to Success, April 2006

Monthly newsletter produced by Iowa Department of Vocational Rehabilitation

Volume of Traffic on the Primary Road System, 2002

The Office of Transportation Data, in cooperation with the Federal Highway Administration, prepares this biennial traffic report. This report is used by federal, state, and local governmental agencies in determining highway needs, construction priorities, route location and environmental impact studies, and the application of appropriate design standards. The general public uses this information in determining the amount of traffic that passes a given area as they make their development plans and propose land use changes. The above reflects only a few of the many technical uses for this data.

Demographic effects of extreme winter weather in the barn owl.

Extreme weather events can lead to immediate catastrophic mortality. Due to their rare occurrence, however, the long-term impacts of such events for ecological processes are unclear. We examined the effect of extreme winters on barn owl (Tyto alba) survival and reproduction in Switzerland over a 68-year period (approximately 20 generations). This long-term data set allowed us to compare events that occurred only once in several decades to more frequent events. Winter harshness explained 17 and 49% of the variance in juvenile and adult survival, respectively, and the two harshest winters were associated with major population crashes caused by simultaneous low juvenile and adult survival. These two winters increased the correlation between juvenile and adult survival from 0.63 to 0.69. Overall, survival decreased non-linearly with increasing winter harshness in adults, and linearly in juveniles. In contrast, brood size was not related to the harshness of the preceding winter. Our results thus reveal complex interactions between climate and demography. The relationship between weather and survival observed during regular years is likely to underestimate the importance of climate variation for population dynamics.

Main Street Messenger, Winter 2006

News from the Iowa Downtown Resource Center, Main Street Iowa, and the Iowa Department of Economic Development Community Development Division.