Bouteloua gracilis (19% cover), Carex filifolia (15% cover), Buchloe dactyloides (5% cover), Sporobolus cryptandrus (5% cover), and Stipa comata (5% cover) were the dominant graminoids across the site, while Yucca glauca (1% cover) and Artemisia frigida
(1% cover) dominated the forbs.
Les communautes herbeuses qui se trouvent sur les versants secs, abrupts et exposes du sud de la r6gion des lacs Aishihik-Sekulmun, au sud-ouest du Yukon, sont dominees par Artemisia frigida et Carex filifolia, avec comme especes sous-dominantes, Calamagrostis purpurascens, Poa glauca, Pensternon gormanii, Phlox hoodii et Potentilla nivea.
Floristically these boreal grasslands are similar at the generic (e.g., Festuca, Poa) and even specific (e.g., Artemisia frigida, Bromus pumpellianus, Calamagrostis purpurascens, Carex filifolia) levels.
The vegetation communities covering the main part of the grassland slopes were dominated by two species: Artemisia frigida and Carex filifolia (Table 1).
Correlations suggests seedling emergence of Artemisia frigida and Chenopodium album from seed banks increases with the frequency of burning.
Germination of previously buried seeds of fringed sage (Artemisia frigida).
Bold numbers indicate the species emerging from seed banks that were most highly correlated [r > -0.31 or <0.31, ([r.sup.2] [greater than or equal to] 0.10)] with at least one axis Axis 1 2 Species r tau r tau Amaranthus retroflexus -0.06 0.08 0.19 0.15 Androsace septentrionalis 0.29 0.18 -0.22 -0.10 Artemisia frigida 0.46# 0.46# 0.03 0.08 Artemisia ludoviciana 0.13 0.12 -0.11 -0.01 Carex sp.
Upland areas (composing approximately two-thirds of the CPER) are dominated by shortgrasses (approximately 90% grass cover, primarily consisting of Bouteloua gracilis and Buchloe dactyloides), occasionally interspersed with a few low shrubs (2%, primarily Artemisia frigida
and Eriogonum effusum), whereas in adjacent lowland floodplains associated with the ephemeral chanuels of Owl Creek, this habitat matrix (56% grass) is interspersed with numerous low and larger shrubs (18%, primarily A.