Diversity of bryophytes in show caves in Slovenia and relation to light intensities

  • Janez Mulec Karst Research Institute, Scientific Research Centre of the Slovenian Academy of Sciences and Arts, Titov trg 2, SI-6230 Postojna
  • Svatava Kubešova Moravian Museum, Department of Botany, Hviezdoslavova 29a, CZ-62700 Brno

Abstract

In subterranean environments phototrophic organisms can grow only in the proximity of light sources. In a study from eight Slovenian show caves: Črna jama, Kostanjeviška jama, Krška jama, Pekel pri Zalogu, Pivka jama, Postojnska jama, Škocjanske jame, Županova jama and two mines, Idrija mer­cury mine and Mežica lead and zinc mine, equipped for tourist visits, 37 taxa of Bryophyta and Pteridophyta were identified. The most frequent organisms were mosses Amblystegium ser­pens, Brachythecium sp., Eucladium verticillatum and Fissidens taxifolius. The highest diversity of bryophytes was recorded in Mežica mine with16 identified taxa where lamps are on con­tinuously. Bryophytes were collected at wide range of photo­synthetic photon flux densities (PPFD) from 0.2 to 530.0 μmol photons/m2/s. Eucladium verticillatum had the highest span of PPFDs, ranging from 1.4 to 530.0 μmol photons/m2/s. Bryo­phytes compensate for low PPFD withlonger exposure to light irradiance. Cratoneuron filicinum identified in Mežica mine de­veloped sporophytes at 2.1 and 2.4 μmol photons/m2/s, in Post­ojnska jama Brachythecium salebrosum developed sporophytes at 4.7 μmol photons/m2/s. Recolonization of lampenflora in show caves where bleachis applied to prevent its growthis still successful at sites that are exposed to long periods of irradiance and highPPFDs.

 

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Published
2010-12-01
How to Cite
1.
Mulec J, Kubešova S. Diversity of bryophytes in show caves in Slovenia and relation to light intensities. AC [Internet]. 2010Dec.1 [cited 2020May25];39(3). Available from: https://ojs.zrc-sazu.si/carsologica/article/view/86
Section
Original papers