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Title: Recovery of the herbaceous layer in the young silver birch and black alder stands that developed spontaneously after a forest fire
Authors: Orczewska, Anna
Prukop, Marcin
Strzelczyk, Adriana
Keywords: Species migration; Ancient woodland indicator species; Post-fire succession and regeneration; Habitat humidity; Dispersal and recruitment limitation
Issue Date: 2016
Citation: Ecological Research, Vol. 31, no. 1 (2016) s. 125-133
Abstract: The studies, which were conducted in southern Poland, focused on the recovery of the herb layer in 17-year-old post-fire silver birch and black alder forests. Although both types of stands, which are of the same age, developed spontaneously, the alder stands occupied damper sites (with thicker A horizons that survived the fire) than those in the birch forests. We surveyed the migration rates of 44 woodland species, primarily ancient woodland indicators, into both forests and the potential differences in these rates depending on their moisture regime and the community type represented by unburned forests, which were treated as the source of the woodland species pool. Additionally, the role of local depressions with high humidity that were covered by post-fire alder woods in the colonization process, as well as species survivorship and recolonisation, were estimated. Woodland species showed diverse migration paces among the sites; most of them migrated faster on more fertile sites with a higher humidity. Small patches of post-fire alder woods contributed to the recolonisation process since many woodland species in the herb layer survived the fire due to its high humidity, which inhibited the intensity of the forest fire. The recovery of woodland species in post-fire woods is the combined effect of regeneration, which relies on autochthonic propagules, and secondary succession, which is based on allochthonic propagules. Local depressions, which provide refuges for fire-sensitive, dispersal-limited species, contribute to their survivorship and thus to the successive recovery of herbaceous layers after a fire.
DOI: 10.1007/s11284-015-1321-z
ISSN: 0912-3814
Appears in Collections:Artykuły (WNP)

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