In this study we provide the first record of bryophyte community diversities in contrasting habitats of the Torngat Mountains National Park (Labrador, Canada), a coastal mountain subarctic ITEX (International Tundra Experiment) study site. The point-intercept method was used to describe and track changes in the bryophyte community diversity (cover, species richness, diversity indices) at dry vs. wet habitats, in 2008 and 2010. The majority of species observed are common and abundant to the Canadian polar region. Bryophyte community composition differed between wet and dry habitats; Racomitrium lanuginosum, Polytrichum piliferum and P. juniperinum dominated dry and exposed habitats, whereas Drepanocladus spp., Aulacomnium spp. and Sphagnum spp. dominated wet habitats. Wet habitats were more diverse (4.8 ± 2.9 vs. 1.6 ± 1.2 species m–2) and had higher bryophytes cover (66.1 ± 35.4% vs. 12.6 ± 9.9%) compared to dry habitats. A survey of the tundra change literature, suggests that a warming climate will decrease bryophyte cover as shrub cover increases, and that the cover of certain species (e.g., Polytrichum piliferum) will likely increase in dry habitats where shrub cover is not expected to increase to the same degree.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 121 • No. 2