Unexpected bryophyte lignicolous assemblages in the Izvoarele Nerei beech-wood (southeastern Carpathians, Romania)

• Localización: Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, ISSN 1310-7771, Vol. 21, Nº. 3, 2015, págs. 235-243
• Idioma: inglés
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• Resumen

  • The Izvoarele Nerei Forest (in the southeastern part of Romania) on the southern slopes of the Semenic Mountain has been bryofloristically surveyed. This is one of the largest old beech forests of Europe, covering more than 5000 ha of pure beech stands. Quantitative relevés were set systematically and the Index of Ecological Significance for each taxon was calculated. Seventy-five taxa were identified, including 62 mosses and 13 liverworts. Two Red List species were found: Dicranum viride (EN) and Lophozia ascendens (VU).

    The bryoflora of the site is strikingly distinct from that of other old-growth forests. The overall bryophyte cover is scarce, CWD liverworts are mostly absent or very infrequent, and pleurocarpous mosses dominate almost everywhere to the detriment of pioneer specialized liverworts. The beech old-growth forest of Nerei is mentioned as escaping the simplistic interpretations in regard to the indicator value of bryophytic assemblages.

    The unfavourable bioclimatic context is pointed out as the most likely potential explaining factor.