Connections, Winter 2001-2002

Newsletter for Iowa Department of Transportation, Office of Public Transit

Main Street Messenger, Winter 2006

Main Street Iowa information.

SMARTNews, Winter 2006

News from the Iowa Careers Consortium

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.

Iowa Aviation Bulletin, Winter 2006

Iowa Department of Transportation Office of Aviation newsletter

Research News, Winter 2006-2007

Newsletter of Research and Technology Bureau - Highway Division

Iowa African-American Journal, Winter 2005, Vol. 11, no. 2

Newsletter for the Iowa Commission on the Status of African-Americans

Fresh News; The Farmers' Market Newsletter, Winter 2006

Newsletter produced by Iowa Department of Agriculture and Land Stewardship

White Cane Update, Winter 2004

The White Cane Update newsletter includes information about the latest happenings at the Iowa Department for the Blind.

White Cane Update, Winter 2005

The White Cane Update newsletter includes information about the latest happenings at the Iowa Department for the Blind.