Catarina Rydin PhD
Department of Ecology, Environment and Plant Sciences
Lilla Frescativägen 5
SE-106 91 Stockholm
Telephone: +46 (0)8 161215
Current – Associate professor, Stockholm University
2010 – 2011 Assistant professor, Uppsala University
2010 Postdoc repatriation, Stockholm University
2010 Docent, Stockholm University
2008 – 2009 Postdoctoral fellow, University of Zürich
2006 – 2007 Postdoc at the Bergius Botanic Garden
2005 – 2006 Postdoc at the Swedish Museum of Natural History
2005 PhD, Stockholm University
2003 Licentiate degree, Stockholm University
1999 Master degree, Stockholm University
Diversity and evolution in the Gnetales and extinct relatives
My main research interest concerns seed plant evolution, focusing on the Gnetales and extinct relatives. I am interested in pollination biology, phylogeny, character evolution, and diversity and distribution in time and space. I integrate information from molecular data, extant morphology and fossils in order to further elucidate the evolutionary events that resulted in present day patterns.
The Gnetales are a small group of seed plants that comprise three distinct genera, Gnetum, Welwitschia and Ephedra. Extant diversity is limited to approximately 70-80 species but these species have long been suggested to be remains of a former much more diverse clade. Pollen studies indicate a peak in gnetalean diversity in the Early Cretaceous, simultaneously with the angiosperm radiation, but the Gnetales declined again towards the K-T boundary.
Megafossil evidence of the Gnetales was long unknown but is now expanding rapidly. Among recent findings are coalified seeds from Europe and North America, and compression/impression fossils from the Crato Formation in Brazil and the Yixian Formation in Liaoning, China. The systematic affinities of the fossils are often uncertain, mainly due to restricted knowledge of the phylogeny and morphology of living species.
Current research projects in my group focus on diversification patterns, pollination biology, phylogeny, pollen morphology, morphological variation patterns in living and fossil species. We use the information to answer questions on trait evolution and timing of evolutionary events.
Stefanie M. Ickert-Bond, University of Alaska Fairbanks
Peter K. Endress, University of Zürich
Barbara Mohr, Museum für Naturkunde, Berlin
Carina Hoorn, University of Amsterdam
Karl Niklas, Cornell University
Phylogeny, diversity and biogeography in Rubiaceae
In collaboration with the Bremer Lab in Stockholm, I study phylogeny and evolution in the coffee family, Rubiaceae. I am interested in relationships, biogeography and character evolution in subfamily Rubioideae, and in relationships among major clades of the family. Rubiaceae comprise more than 13,000 species, with a worldwide distribution. They are easily recognized with their (generally) opposite branching and phylotaxis, interpetiolar stipules and epigynous flowers.