My journey with diatoms began in the second year of my engineering studies. My thesis titled “Variations in taxonomic composition and relative abundance of diatoms from early Paleogene sediments of Ocean Drilling Program Site 1050 (Atlantic Ocean) as indicators of paleoenvironmental changes” was focused on changes in diatom abundance and community composition in response to the Paleocene Eocene Thermal Maximum event.
During my Master’s degree, I continued to work on fossil marine diatoms. My thesis titled“High-resolution, quantitative siliceous phytoplankton assemblage variations across the Eocene-Oligocene Transition in 748B site (Kerguelen Plateau, Indian Ocean)” was focused on biogenic opal accumulation rates and changes in diatom assemblages in response to a global cooling event coinciding with the Eocene-Oligocene transition.
Since 2019 I am working at Lund University-Geology Department, my Ph.D. project aims to understand early diatom evolution with a broad approach, combining traditional methods using diatom taxonomy to determine phylogenies coupled with modern genetic tools (DNA analysis). I will try to answer questions surrounding the timing of the origin of the diatoms and their evolution as genetic and paleontological data provide independent means.
Displaying of publications. Sorted by year, then title.
Rethinking the chronology of early Paleogene sediments in the western North Atlantic using diatom biostratigraphyJakub Witkowski, David M. Harwood, Bridget S. Wade, Karolina Bryłka
(2020) Marine Geology, 424
Early Paleogene biosiliceous sedimentation in the Atlantic Ocean : Testing the inorganic origin hypothesis for Paleocene and Eocene chert and porcellaniteJakub Witkowski, Donald E. Penman, Karolina Bryłka, Bridget S. Wade, Sabine Matting, et al.
(2020) Palaeogeography, Palaeoclimatology, Palaeoecology, 556