Microsite conditions in retrogressive thaw slumps may facilitate increased seedling recruitment in the Alaskan Low Arctic.

Willow seedbanks showed a trend of larger size with deciduous shrub and forb cover in ANOVA ( F 6,23 = 2.34, p = 0.065; Figure 6 b), as did evergreen seedbanks (mainly Vaccinium spp. and Empetrum nigrum ) with mosses ( F 6,23 = 2.284, p = 0.071; Figure 6 b), explaining 22% and 21% of model variance, respectively.

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There was a marginally significant interaction between RTS age × site for percent germination (Table 2 ), because the young I‐minus 1 seedbank showed 2–5 times greater percent germination than its old and undisturbed control seedbanks (Figure 3 b); percent germination of NE‐14 seedbanks was not different (Table 3 ; Figure 3 b).

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