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Död ved och förekomsten av två mossor som indikerar skoglig kontinuitet
Linköping University, Department of Physics, Chemistry and Biology, Ecology .
2011 (Swedish)Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesisAlternative title
Dead wood and the presence of two mosses indicating forest continuity (English)
Abstract [sv]

Studiens syfte är att undersöka arterna Buxbaumia viridis och Nowellia curvifolia för att kunna förutse var man hittar dessa signalarter. Detta gjordes genom att död liggande ved undersöktes i Ycke naturreservat samt en närliggande brukas skog, Östergötlands län.

Resultaten visar att faktorerna som är avgörande för B. virids är markkontakt och nedbrytningsklass. B. viridis föredrar att växa på lågor i de högre nedbrytningsklasserna (4-7) och med stor andel markkontakt, över 80 %. N. curvifolia beror på diameter (över 60cm), nedbrytningsklass (3-4) och längd (över 30m). Baserat på dessa resultat, kan signalarter lättare upptäckas utan en fullskalig inventering av skogen.

Abstract [en]

Young trees dominate Swedish forests, which today have a shortage of downed dead wood, key biotopes, and an overall lack of high natural values. By using the mosses Buxbaumia viridis and Nowellia curvifolia the general state of a forest can be assessed. These species indicate high natural values, with a continuity of dead wood in different stages of decay. By investigating ground-lying dead wood, one can predict if the mosses occur in the area or not. This is useful for maintenance of the forests and the preservation of biological diversity. The purpose of this study was to study the species B. viridis and N. curvifolia in Ycke natural reserve in Östergötland, southern Sweden, and learn how to predict where these species occur. The results showed that ground contact (over 80 %) and stage of decay (stage 4-6) of logs were important to B. viridis, with test values 30- 50 times as high as the other test values. To N. curvifolia, the diameter of the logs was the most important. Decay stage and length of the log were also important factors to N. curvifolia. Based on these results, these indicator species can more easily detected without a full scale inventory of the forest.

Place, publisher, year, edition, pages
2011. , 12 p.
Keyword [en]
Stages of decay, Buxbaumia viridis, Nowellia curvifolia, diameter, logs, ground contact
Keyword [sv]
nedbrytningsklass, Buxbaumia viridis, Nowellia curvifolia, diameter, låga, markkontakt
National Category
URN: urn:nbn:se:liu:diva-69675ISRN: LiTH-IFM-Ex--11/2542- -SEOAI: diva2:455602
2011-05-31, Linköping, 15:45 (Swedish)
Life Earth Science
Available from: 2011-12-19 Created: 2011-07-13 Last updated: 2011-12-19Bibliographically approved

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