Alaska Geobotany Center
Alaska Arctic Vegetation Archive: Canadian Western Arctic Vegetation Plots (Lambert 1968)
The vegetation and soils of the Low Arctic Subalpine Zone of the Richardson and British Mountains of the Canadian Western Arctic were described by J. Lambert in 1968. The primary source document for this dataset is J. Lambert's Ph.D. thesis (1968) "The ecology and successional trends of tundra plant communities in the Low Arctic Subalpine Zone of the Richardson and British Mountains of the Canadian Western Arctic". Vegetation plot data were collected in June, July, and August of 1965 and July and August of 1966. Funding for the project was provided in part by President’s Committee on Arctic and Alpine Research from the University of British Columbia, and by a National Research Council Grant T-92 to V. J. Krajina.
One hundred fifty-four plots were subjectively located in two main study areas, Canoe Lake and Divided Lake in the Richardson Mountains, Northwest Territories, and Trout Lake in the British Mountains, Yukon Territory. Plots were located in 14 broad plant communities and 6 broad habitat types including: a) Willow shrub vegetation of riparian areas and warm habitats (13 plots), 2) Sedge grass and dwarf shrub mire and fen vegetation (27 plots), 3) Bog vegetation, acidic mires including tussock tundra (32 plots), 4) Deep snowbed vegetation (20 plot), 5) Dry to moist dwarf-shrub heath and low shrub vegetation on acidic nutrient poor substrates (48 plots), and 6) Dry and mesic dwarf-shrub and graminoid vegetation on non-acidic substrates (14 plots).
The cover of vascular and nonvascular plant species was originally recorded according to the cover abundance scale developed by Krajina (1933) but converted to the old Braun-Blanquet cover classes scale. Depending on the vegetation type, sample plots varied between 16, 25 and 100 square meters. Sample plots were not permanently marked and no specific location data were recorded. At each study plot, a soil pit was dug. Physical and chemical characteristics were determined for each recognizable soil horizon, however only summarized soil descriptions are available by community type. In addition, the depth of the active layer was recorded for most study plots. Photographs of the dominant plant associations are available but individual plot photos were not available.
Other observations and data from his thesis are reported in J. Lambert (1972a) "Plant succession on tundra mudflows: preliminary observations" and J. Lambert (1972b) "Vegetation patterns in the Mackenzie Delta Area, Northwest Territories".
Lambert, J. D. H. 1968. The ecology and successional trends of tundra plant communities in the Low Arctic Subalpine Zone of the Richardson and British Mountains of the Canadian Western Arctic. Ph.D. thesis. University of British Columbia, Canada.
Lambert, J. D. H. 1972a. Plant succession on tundra mudflows: preliminary observations. Arctic, 25: 99-106.
Lambert, J. D. H. 1972b. Vegetation patterns in the Mackenzie Delta Area, Northwest Territories. In D. E. Kerfoot (Ed.), Mackenzie Delta Monograph, pp. 51-68. Brock University, St. Catharines, Ontario, Canada.
Data and Resources
Start Date: 1965/06/09
End Date: 1966/08/13