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Jastrzebska, Ewa Zuzanna, 2020. Poplar for biodiversity? : comparison of lichen communities in stands of Balsam poplar, Hybrid larch, Silver birch and Norway spruce. Second cycle, A2E. Alnarp: SLU, Southern Swedish Forest Research Centre

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Due to increasing interest in the use of non-native tree species, more knowledge is needed concerning their effects on biodiversity. In this context, epiphytic lichens were investigated in two stands of non-native tree species (Larix×eurolepis and Populus trichocarpa) and two stands of native tree species (Picea abies and Betula pendula) in a field experiment in southern Sweden. The trunks in the stands were examined separately for northern and southern side of the tree trunk. The presence of all types of lichen (crustose, foliose and fruticose) species were registered. Twenty-two lichen species in total were found in the experimental sites; six in P. abies stand, seven in B. pendula stand, nine in L.×eurolepis stand and eighteen in P. trichocarpa stand. Most of the lichen species are common in Sweden. Although one red-listed lichen species, Alyxoria ochrocheila was found. The status of this lichen is near threatened (NT). The non-metric multidimensional scaling (NMDS) had been used for displaying the diversity of lichen communities. The study showed the highest lichen community diversity and species richness in the P. trichocarpa stand. The only one red-listed lichen species, A. ochrocheila was also found in this stand. The other non-native tree species stand (L.×eurolepis) showed higher diversity and species richness than both stands of native tree species. The less lichen diverse and the poorest in lichens species was the P. abies stand. The diameter breast height was not significant for lichen richness in this study. Neither was the side of the tree on which the lichens were found. Investigated non-native tree species seem to have potential to increase biodiversity in production stands. Considering the bark complexity, fast growth and stand architecture, species like poplar may support ecological functions similar to those provided by great-dimension, old trees like oaks. It is recommended to continue the study in other parts of Sweden.

Main title:Poplar for biodiversity?
Subtitle:comparison of lichen communities in stands of Balsam poplar, Hybrid larch, Silver birch and Norway spruce
Authors:Jastrzebska, Ewa Zuzanna
Supervisor:Böhlenius, Henrik and Petersson, Lisa
Examiner:Brunet, Jörg
Series:Examensarbete / SLU, Institutionen för sydsvensk skogsvetenskap
Volume/Sequential designation:337
Year of Publication:2020
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:SM001 Euroforester - Master's Programme 120 HEC
Supervising department:(S) > Southern Swedish Forest Research Centre
Keywords:Poplar, Populus trichocarpa, lichen, biodiversity, epiphytic lichen, Norway spruce, Hybrid larch, Silver birch, Sweden
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Subject. Use of subject categories until 2023-04-30.:Forestry production
Deposited On:07 Oct 2020 09:17
Metadata Last Modified:08 Oct 2020 09:01

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