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Biodiversity and Conservation

, Volume 21, Issue 12, pp 3221–3241 | Cite as

Tree and stand-scale factors affecting richness and composition of epiphytic bryophytes and lichens in deciduous woodland key habitats

  • Anna Mežaka
  • Guntis Brūmelis
  • Alfons Piterāns
Original Paper

Abstract

Conservation and sustainable forestry are essential in a multi-functional landscape. In this respect, ecological studies on epiphytes are needed to determine abiotic and biotic factors associated with high diversity. The aim of the present study was to evaluate relative sensitivity of conservation targets (epiphytic bryophytes and lichens) in relation to contrasting environmental variables (tree species, tree diameter at breast height, bark crevice depth, pH, tree inclination, pH, forest stand age, area and type) in boreo-nemoral forests. The study was conducted in Latvian 34 woodland key habitat (WKH) boreo-nemoral forest stands. Generalized linear mixed models and canonical correspondence analysis showed that tree species and tree bark pH were the most important variables explaining epiphytic bryophyte and lichen composition and richness (total, Red-listed, WKH indicator species). Forest stand level factors, such as stand size and habitat type, had only minor influence on epiphytic species composition and richness. The results of the present study indicate a need to maintain the diversity of tree species and large trees, particularly Acer platanoides, Carpinus betulus, Fraxinus excelsior, Populus tremula, Tilia cordata, Ulmus glabra and Ulmus laevis in conservation of epiphytic bryophyte and lichen communities in the future.

Keywords

Epiphytes Bryophytes Lichens Tree Woodland key habitats 

Notes

Acknowledgments

Thanks is given to Ligita Liepiņa (University of Latvia), Austra Āboliņa, Baiba Bambe for help in bryophyte identification. We are thankful to Vija Znotiņa for the fruitful discussions in early stages of the study. Thanks is given to Didzis Elferts for suggestions in statistical analysis. The present work is partly financially supported by projects - European Social Fund (ESF2004/0001/VPD1/ESF/PIAA/04/NP/3.2.3.1/0001/0001/0063), University of Latvia research project ZP2008/ZP08, Latvian Academy of Sciences grant 05.1512/147, Ministry of Education, Youth and Sport of the Czech Republic, DBU Stipendium für Nachwuchswissenschaftler, Forest Development Fund (grant Nr.180909/S96), European Community Mobility Programme Erasmus Mundus Action 2, Strand 1 (EMA2), Triple I 2011/2012. Thanks is given for three anonymous reviewer’s for valuable comments in manuscript improvement.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Anna Mežaka
    • 1
  • Guntis Brūmelis
    • 1
  • Alfons Piterāns
    • 1
  1. 1.Department of Botany and Ecology, Faculty of BiologyUniversity of LatviaRigaLatvia

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