Contents: Acknowledgements/ An Introduction to Ellef Ringnes Island, Prince Patrick Island and Nothern Ellesmere Island: Freshwater Ponds and Lakes (Overview/ History of Diatom Research Across the Canadian Arctic)/ Ellef Ringnes, Price Patrick and Northern Ellesmere Islands: Study Area (Climate/ Limnology/ Site Description/ Methods)/ The Diatom Flora (General Information and Terminology/ The Taxa)/ Literature Cited/ Photographic Plates/ Appendices/ Index. This project was initiated in 1998 with the development of a surface diatom calibration set for selected regions from the Arctic islands as part of the PhD dissertation of D. Antoniades at the University of Toronto, Canada. Under this study, surface sediments, mosses, rock and other available habitats were studied from 91 ponds and lakes along with sediment cores from several sites. It quickly became clear that many of the diatoms observed from this study were either poorly documented or new and a taxonomic treatment of these diatoms from high latitudes in the Arctic was waranted. Detailed taxonomic studies continued at the Canadian Museum of Nature ussing addition SEM generated images and the extensive reference library.weiterlesen