Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source

Saproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solutio...

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Main Author: Larsson, Anna
Format: Others
Language:English
Published: Linköpings universitet, Institutionen för fysik, kemi och biologi 2008
Subjects:
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11689
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spelling ndltd-UPSALLA1-oai-DiVA.org-liu-116892013-01-08T13:34:54ZEvaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal sourceengLarsson, AnnaLinköpings universitet, Institutionen för fysik, kemi och biologiInstitutionen för fysik, kemi och biologi2008artificial environmenthollow oakQuercus robursaproxylic beetlesSwedenwood mould boxesBiologyBiologiSaproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solution. The aim of this study was to investigate if the insects that are dependent on tree cavities with wood mould would colonize an artificially created habitat: large wooden boxes filled with artificial wood mould placed on tree trunks. The boxes were filled with substrates like oak saw dust, oak leaves, dead hens, hen excrements, medicago (Medicago falcata flour) or potatoes. Over three years, 136 species and 10 380 specimens were caught in 47 boxes. The groups classified as specialists were in general statistically significant more often than groups classified as generalists. Dead hen was the substrate with the highest number of species, although differences were small. In conclusion, a large number of species, including red listed ones and saproxylic specialists used the boxes. A dead hen in the box gave some extra species and 1800 meters was too long for some of the species to disperse. Hence, the prospects for using artificial environments are good especially to reduce habitat availability gaps in time and space. Student thesisinfo:eu-repo/semantics/bachelorThesistexthttp://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11689application/pdfinfo:eu-repo/semantics/openAccess
collection NDLTD
language English
format Others
sources NDLTD
topic artificial environment
hollow oak
Quercus robur
saproxylic beetles
Sweden
wood mould boxes
Biology
Biologi
spellingShingle artificial environment
hollow oak
Quercus robur
saproxylic beetles
Sweden
wood mould boxes
Biology
Biologi
Larsson, Anna
Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
description Saproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solution. The aim of this study was to investigate if the insects that are dependent on tree cavities with wood mould would colonize an artificially created habitat: large wooden boxes filled with artificial wood mould placed on tree trunks. The boxes were filled with substrates like oak saw dust, oak leaves, dead hens, hen excrements, medicago (Medicago falcata flour) or potatoes. Over three years, 136 species and 10 380 specimens were caught in 47 boxes. The groups classified as specialists were in general statistically significant more often than groups classified as generalists. Dead hen was the substrate with the highest number of species, although differences were small. In conclusion, a large number of species, including red listed ones and saproxylic specialists used the boxes. A dead hen in the box gave some extra species and 1800 meters was too long for some of the species to disperse. Hence, the prospects for using artificial environments are good especially to reduce habitat availability gaps in time and space.
author Larsson, Anna
author_facet Larsson, Anna
author_sort Larsson, Anna
title Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
title_short Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
title_full Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
title_fullStr Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
title_full_unstemmed Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source
title_sort evaluation of artificial habitats for saproxylic oak invertebrates: effects of substrate, composition and distance from dispersal source
publisher Linköpings universitet, Institutionen för fysik, kemi och biologi
publishDate 2008
url http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11689
work_keys_str_mv AT larssonanna evaluationofartificialhabitatsforsaproxylicoakinvertebrateseffectsofsubstratecompositionanddistancefromdispersalsource
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