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Study on biomass in semiaquatic insects (Odonata) over a 20-year period in central, Sweden.
Halmstad University, School of Business, Engineering and Science.
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This study is about how biomass of dragonflies insects have changed over the past 20-years in a forested area of central Sweden. This was done by analysing previously collected Odonata larvae stored in ethanol where sampling effort corrects the weight per locality. The results display a small but significant biomass increase over past decades, going against the recently observed trend of biomass decline in insects. However, this biomass gain was not even between the families, the ones that increased the most was Aesnidae and Libelluidae.  The reasons for the observed increase are discussed, some possible suggestions are less disturbance in their environments and their ability to adapt due to their long evolution giving them a phenotypical advantage.

Place, publisher, year, edition, pages
2018. , p. 11
Keywords [en]
Biomass, Odonata, Aesnidae, Libelluidae
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:hh:diva-38022OAI: oai:DiVA.org:hh-38022DiVA, id: diva2:1249628
Educational program
Conservation and Diversity, 180 credits
Supervisors
Examiners
Available from: 2018-09-27 Created: 2018-09-19 Last updated: 2018-09-27Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf