Report on the distribution of dwarf birches and present pollen rain, Baffin Island, N.W.T., Canada
A distribution map for the dwarf birches is presented for the region from Frobisher Bay northward to Cumberland Peninsula. These shrubs are restricted to favourable habitats which, at the northern limit of the species (6740N) are found on south
-facing slopes above the immediate local cooling influence of the sea. Pollen studies within the zone of scattered dwarf birch indicate that pollen dispersal from these low, prostrate shrubs is minimal. Samples of moss collected beneath the bushes have 5
The purpose of this study is to study the processes, both active and inactive, which influence the formation, structure and distribution of subalpine heaths in the Abisko Valley and to compare their ecotope with the adjacent birch forest.
The northwestern Alaskan records, when combined with others from eastern Beringia (Alaska and adjacent Canada), suggest important regional variation in vegetation and climate histories during the Duvanny Yar (25,000 - 14000 Yr B.P.) and Birch
Studies of the ground temperatures and hydrological conditions at four sites on a subalpine heath and in the birch forest in the subarctic valley in Abisko from 1984-87 show that a clear relationship exists between ground temperature and climatic
A L'HOLOCENE FINAL (NEOGLACIAIRE) PAR RAPPORT A L'ACTUELLE, CELLE DE QUATRE AVANCEES GLACIAIRES DU PLEISTOCENE SUPERIEUR ETAIT A 500 M (BIRCH HILL), 750 M (TEKAPO), 875 M (MT JOHN) ET 1 050 M (BALMORAL) EN DESSOUS DE L'ACTUELLE.
pollen diagram from Gull Lake on the upland east of the glacier records vegetational development since the deposition of the White River volcanic ash 1220 C yr ago. An initial species-rich treeless vegetation was replaced by birch-alder-willow shrub