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Gamla tallars betydelse för biologisk mångfald på Gotland

<p>Modern methods for managing pine (<em>Pinus sylvestris</em>) create homogenized forests. This decreases nature’s potential for biodiversity and might threaten species in need of different types of milieu. The main purpose of this study was to investigate how important older pine trees are for biodiversity. In the Hall-Hangvar Reserve in the north-west part of Gotland, insects collected from traps showed that more species were found in old or dead trees compared to younger pine trees. A statistically significant difference was found for Coleoptera (beetles). The taxons of greatest interest for this study were Coleoptera and Hymenoptera (wasps). Certain families of Hymenoptera use ducts made by larvae from some families of Coleoptera.These larvae also serve as prey. Relevance concerning enviromental importance to species and diffrenences in inhabiting the three stages of pine trees was of importance.</p>

Identiferoai:union.ndltd.org:UPSALLA/oai:DiVA.org:hgo-282
Date January 2009
CreatorsLars, Enström
PublisherGotland University, Department of Biology
Source SetsDiVA Archive at Upsalla University
LanguageSwedish
Detected LanguageEnglish
TypeStudent thesis, text

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