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Call number: AWI Bio-01-0058 ; AWI Bio-01-0212
In: Bibliotheca diatomologica, Band 45
Description / Table of Contents: The freshwater diatom flora from arctic and subarctic regions of North America remains poorly known. The aim of this investigation is to improve our knowledge of diatoms in lakes from eastern subarctic Canada, and to provide a stronger foundation for the use of diatoms in limnological and palaeolimnological studies. To this end, we analysed the modern diatom assemblages in surficial sediments from 123 lakes in northern Québec and Labrador. The two study transects in Jamésie-Hudsonie (data set including 59 lakes and 38 environmental variables) and in Québec-Labrador (data set consisting of 64 lakes and 29 environmental variables) extend over a vast area from the boreal forest in the south to the arctic tundra conditions in the north. Of a total of 516 diatom taxa in the Jamésie-Hudsonie data set, 218 species were used for the development of a transfer function for the reconstruction of dissolved organic carbon (DOC). In the Québec-Labrador data set, two inference models were developed for the reconstruction of water colour and alkalinity based on 128 of 303 diatom taxa. The majority of taxa belonging to this surprisingly species-rich boreal-subarctic diatom flora are illustrated in photographic plates, accompanied by a short description of the distribution of each taxon.
Type of Medium: Monograph available for loan
Pages: VI, 200 Seiten , Illustrationen
ISBN: 3443570364
Series Statement: Bibliotheca diatomologica 45
Language: English
Note: Contents: 1. Introduction. - Overview. - 1.1 The use of diatoms in paleolimnology. - 1.2 Studies of freshwater diatoms in northern Québec and Labrador. - 1.3 Purpose of this project. - 2. Diatoms as indicators of dissolved organic carbon (DOC), alkalinity, and water colour. - Overview. - 2.1 Study area. - 2.2 Methods. - 2.2.1 Sampling and measurement procedures. - 2.2.2 Numerical analysis. - 2.3 Ordination results. - 2.3.1 PCA. - 2.3.2 CCA. - 2.4 Inference models. - 2.4.1 WA-PLS. - 2.4.2 Potential indicator taxa. - 2.5 Implications for paleoecological studies. - 3. Diatom taxa. - Overview. - Diatom flora. - References. - Plates. - Appendix I Raw environmental data for the 59 study sites of Jamésie-Hudsonie. - Appendix II Raw environmental data for the 64 study sites of Québec-Labrador. - Appendix III Taxonomic index of the 218 most abundant diatom species used for CCA plotting in Jamésie-Hudsonie. - Appendix IV Taxonomic index of the 128 most abundant diatom species used for CCA plotting in Québec-Labrador. - Species index
Location: AWI Reading room
Location: AWI Reading room
Branch Library: AWI Library
Branch Library: AWI Library
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