Research department Ecology and Evolutionary Biology

Sork lab

Current Research Activity

PostDoc at the University of California at Los Angeles in the Dept. of Ecology & Evolutionary Biology in Prof. Victoria Sork's lab starting November 1st, 2005. Project title: Geographic patterns of the lace lichen in western North America: an indicator species for the impact of glaciation on biodiversity

UCLA Dept. Ecology and Evolutionary Biology Research Symposium 2007 poster

Botany 2006 poster

World distribution of Ramalina menziesii:

Scientific Interests

Historic gene flow and phylogeography
Contemporary gene flow across landscapes
Spatial genetic structure
Community ecology and genetics
Lichenology

Publications as first author

Werth S., Werth S, Gugerli F, Holderegger R, Wagner HH, Csencsics D, Scheidegger C (2007) Landscape-level gene flow in Lobaria pulmonaria, an epiphytic lichen. Molecular Ecology. Online early, doi:10.1111/j.1365-294X.2007.03344.x link

Werth S., H. H. Wagner, R. Holderegger, J. M. Kalwij, and C. Scheidegger. 2006. Effect of disturbances on the genetic diversity of an old-forest associated lichen. Molecular Ecology 15:911-921. pdf

Werth, S., H. H. Wagner, F. Gugerli, R. Holderegger, D. Csencsics, J. M. Kalwij, and C. Scheidegger. 2007. Quantifying dispersal and establishment limitation in a population of an epiphytic lichen. Ecology 87:2037-2046. pdf

Werth, S., H. Tømmervik, and A. Elvebakk. 2005. Epiphytic macrolichen communities along regional gradients in northern Norway. Journal of Vegetation Science 16: 199-208. pdf

Werth, S. 2005. Dispersal and persistence of an epiphytic lichen in a dynamic pasture-woodland landscape. PhD thesis, University of Berne, Berne. pdf

Werth, S. 2001: Key factors for epiphytic macrolichen vegetatation in deciduous forests of Troms county, northern Norway: Human impact, substrate, climate or spatial variation? Master thesis, University of Tromsø, Tromsø. pdf

Coauthorships

Wagner, H. H., R. Holderegger, S. Werth, F. Gugerli, S. E. Hoebee, and C. Scheidegger. 2005. Variogram analysis of the spatial genetic structure of continuous populations using multilocus microsatellite data. Genetics 169:1739-1752. pdf

Wagner, H. H., S. Werth, J. M. Kalwij, and C. Scheidegger. In press. Modelling forest recolonization by an epiphytic lichen using a landscape genetic approach. Landscape Ecology. pdf

Werth, H., S. Werth und W. Funke, 1998: Die Sukzession von Tiergesellschaften auf Fichtensturmwurfflächen. 5.9 Vögel: 321 - 329. In: Fischer, A. (Hrsg.): Die Entwicklung von Wald-Biozönosen nach Sturmwurf. Ecomed. (Book chapter)

Silke's pages

Westcoast Photographies

Sorklab spring trip to Hastings UC Reserve, May 2007

Field trip to Baja California, April 2007

Field work in British Columbia, July 2006

Field work northern California, August 2006

Sea kayaking in Marina del Rey, 2006-2007

Lichen excursion to Santa Monica Mountains, May 27, 2007

Lichen excursion to Santa Monica Mountains, May 13, 2007

Trip to Baja California, March 2007

Winter holiday bike tour 2006

Grand Canyon '06/'07

Impressions from previous field trips

Winter field work pictures

Lichen picture gallery

Arctic picture gallery

Northern lights picture gallery

Data analysis

Silke's haploid data analysis with R

Miscellaneous

Silke's CV

Links