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      Establishment success of lichen diaspores in young and old boreal rainforests: a comparison between Lobaria pulmonaria and L. scrobiculata

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          Abstract

          This study compares the success of vegetative diaspore establishment of the old forest lichens Lobaria pulmonaria and L. scrobiculata sown on Picea abies branches in boreal rainforests. The larger diaspores of L. pulmonaria (green algal photobiont) established more successfully, and showed a greater flexibility in ecological amplitude, than the smaller diaspores of L. scrobiculata (cyanobacterial photobiont). The establishment success apparently depended on species-specific differences in morphological and physiological traits of the diaspores. Both species established as well in young plantations as in old forests. Lobaria scrobiculata was most successful on short branches and small trees. In contrast, L. pulmonaria responded positively to trunk circumference in the old stands. The establishment success of both species decreases with increasing canopy openness, indicating that the soredia/isidioid soredia failed to establish on the most exposed branches. The probability of establishment did not change with bark-pH or with distance from the nearest stream. Despite a successful establishment in regeneration forests, the long-term survival in managed forests is still uncertain.

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          Acidity of boreal Picea abies-canopy lichens and their substratum, modified by local soils and airborne acidic depositions

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            Monitoring Lichens for Conservation: Red Lists and Conservation Action Plans

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              Author and article information

              Journal
              applab
              The Lichenologist
              The Lichenologist
              Cambridge University Press (CUP)
              0024-2829
              1096-1135
              May 2011
              April 5 2011
              : 43
              : 03
              : 241-255
              Article
              10.1017/S0024282910000794
              © 2011

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