. The Canadian field-naturalist. 46 The Canadian Field-Naturalist Vol. 85 Table 5. Species composition of ground lichen on the winter ranges used by the Interior Herd and the Avalon Peninsula and Humber River Herds. Per cent Ground Covered with Lichen Species by Caribou Herds Scientific Name of Interior Herds Avalon Herd 1 Lichen Species Western Central Eastern Humber R. Herd 12 2^ 6 7 3 4 9 10 Cladonia sylvatica^ Cladonia rangiferina Cladonia uncialis Cladonia alpestris Cladonia boryi Cladonia elongata Cladonia spp. Cetraria islandica Cetraria nivalis Sphaerophorus globosus Cornicularia spp.
. The Canadian field-naturalist. 46 The Canadian Field-Naturalist Vol. 85 Table 5. Species composition of ground lichen on the winter ranges used by the Interior Herd and the Avalon Peninsula and Humber River Herds. Per cent Ground Covered with Lichen Species by Caribou Herds Scientific Name of Interior Herds Avalon Herd 1 Lichen Species Western Central Eastern Humber R. Herd 12 2^ 6 7 3 4 9 10 Cladonia sylvatica^ Cladonia rangiferina Cladonia uncialis Cladonia alpestris Cladonia boryi Cladonia elongata Cladonia spp. Cetraria islandica Cetraria nivalis Sphaerophorus globosus Cornicularia spp. Stereocaulon spp. 21 22 3 2 tr. 4 3 1 tr. tr. 23 32 3 5 tr. tr. 1 1 tr. tr. 13 19 1 1 tr. tr. 1 tr. 1 tr. 24 20 7 3 1 tr. 4 1 1 tr. tr. 26 25 3 2 tr. tr. 1 1 tr. tr. ⢠tr. 35 26 4 6 tr. tr. 1 tr. tr. tr. 1 28 30 6 11 1 tr. 1 2 tr. tr. 2 26 17 4 4 1 1 1 1 6 1 1 23 13 9 8 1 3 1 Total 54 64 36 61 59 73 80 61 56 ^Numbers refer to location numbers in Figure 4. ^Includes C. mitis. 100- 90- 80- 70- 60- 50- âº- 40- 30- 20- 10- tiJ CLADONIA ALPESTRIS 123 CLADONIA RANGIFERINA 0 CLADONIA MITIS â¡ CLADONIA UNCIALIS â CLADONIA SPP. (HORN LICHENS) LICHEN HEIGHT (INCHES) SHOWN ABOVE BARS. 20 28 ELAPSED YEARS 57 BURNED Figure 6. Succession of reindeer lichens on lichen woodland sites following destruction by fire. for the central subalpine ranges of the Interior Herd and approximately 700 pounds per acre for the lichen woodland ranges in the eastern Interior. Actually these figures are probably too high since many of the lichen stands were in the early renovation stage (Ahti 1959: 20). At this stage the lichen cover is also losing forage by the decay of the extreme basal portion of the mat. A better approximation of the net annual gain would Hkely be about 150 pounds for the central subalpine range and 350 pounds for the eastern lichen woodlands. Shrubs Shrubs were universal in the winter ranges. About 50 per cent of the upland sites were covered with shrubs, of which Vs were ever- gre
Size: 1616px × 1546px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
