CGRG Bibliography of Canadian Geomorphology
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Author : Frappier, M.; and Geurts, M.A.
Date : 1992
Title : La repartition spatiale des bryophytes en fonction des formes typiques des travertins à Coal River Springs, Yukon [The spatial distribution of bryophytes as a function of typical travertine forms at Coal River Springs, Yukon]
Publication : Student research in Canada's north : Proceedings of the Third National Student Conference on Northern Studies, Ottawa, October 23-24, 1991. Edited by Walter O. Kupsch and James F. Basinger. Musk-ox
Issue : 39:
Page(s) : 243.
Abstract
The travertine deposits of Coal River Springs, Yukon (60 09 08 N, 127 26 02 W) which have built up on the talus slopes of "scalloped terrace-faces" consist of a series of dams and suspended basins. The limpid waters flowing through this system originate from a hydrothermal source. A 1570 hectares ecological reserve was created in September 1990, in order to preserve the site and the local environment. In July 1989, a biogeographical study, which consisted in sampling and identifying various mosses, and attempting to detect their spatial distribution along the travertine dams, was carried out. In July 1989, a biogeographical study, which consisted in sampling and identifying various mosses, and attempting to detect their spatial distribution along the travertine dams, was carried out. Among the 18 species of mosses sampled in the Coal River Springs area, Brachythecium sp., Bryum sp., Cratoneuron sp., and Gymnostonum recurvirostrum (Hedw.) arethe most commonly observed on the travertine deposits. The study permitted the authors to observe the close relationship existing between the various moss species, their habitats, and the vertical and horizontal structure of the dams. The structure is composed of mosses or their calcified remains. Mosses have been identified as the principal element of the morphogenesis of the dams and basins of the Coal River Springs area. A classification of the co-occurrence patterns and a ranking of the distribution patterns were obtained through a multivariate study (PEGASE). The mosses' ecology and the dams' morphology are shown in distribution maps drawn from 6 quadrates. Bryum sp. clumps emerge from calm waters while Cratoneuron sp. and Brachythecium sp. are mostly found immersed along small cascades and on seeping rock faces. Results from the various analyses indicate a spatial and a morphological distribution along the water gradient.
Bibliography of Canadian Geomorphology