Tuesday, June 19, 2007: 1:15 PM-5:20 PM
Ponderosa Pines (Boise Centre on the Grove)
B Symposia (sp)
One Hundred Fifty Years of Human Activity In Sagebrush Steppe: Ecological and Genetic Consequences
Due to anthropomorphic activities, the sagebrush ecosystem of the Northern Great Basin has experienced significant changes in species composition and vegetation structure. The symposium will focus on analyzing the effects of these changes on the reproduction of native species, the genetic structure of plant populations, and the dispersal of exotic invasive weeds. Practices aimed at restoring sagebrush habitats and preventing further loss of biological diversity will also be discussed.
Sponsor: The Pacific Division Section on Ecology and Environmental Sciences
Organizers:Stephen J. Novak
Marcelo Serpe
Presider:Marcelo Serpe
1:15 PMIntroductory Remarks
1:20 PMEcological Genetics of Bromus tectorum (Cheatgrass, Downy Brome) in western North America
Cecilia Lynn Kinter
1:45 PMGermination and seed water status of native and exotic grasses on biological soil crusts
Shawna Zimmerman, Roger Rosentreter, Marcelo Serpe
2:10 PMDifferentiating Impacted and Least Impacted Springbrooks in Southern Idaho
Johnna Sandow, Peter Koetsier
2:35 PMFertile Island Degradation Following Western Juniper Cutting
Chris Miwa, Ron Reuter
3:00 PMBreak
3:15 PMThe Influence of Disturbance Events and Rehabilitation on Sagebrush Steppe Ecosystems
Stuart W. Murray
3:40 PMSagebrush, Fire, and Restoration: New Approaches in the Great Basin
Robert D. Cox, Nancy L. Shaw
4:05 PMInsect-mediated pollination and spatial structuring in Lepidium papilliferum populations
Ian C. Robertson, Amy C. Ulappa, Stephanie Billinge
4:30 PMPopulation Genetics of the Rare Polyploid, Lepidium papilliferum (Brassicaceae), a Southwest Idaho Endemic
Amy J. Stillman, Stephen J. Novak, Ian C. Robertson, James F. Smith
4:55 PMA phylogenetic analysis of Lepidium papilliferum and L. davisii (Brassicaceae) reveal the relations of these rare endemic species
James F. Smith, Amy J. Stillman, Steven R. Larson, Culumber C. Mae, Ian C. Robertson, Stephen J. Novak

Back to The Northwest Regional Meeting (June 17 - 20, 2007)