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Vägtrafikbuller utefter E6 Tanumshede och dess effekt på fågelfaunan
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
2018 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Does road noise from E6 in Tanumshede and the effects on birds abundance and species composition? (English)
Abstract [sv]

Studier har visat att fåglar påverkas av ökade ljudnivåer och ljudfrekvenser (Kociolek et. Al. 2011). Olika fågelarter skiljer sig i känslighet vid störning av ljud. Vissa arter kan anpassa sig och förändra sin kommunikation till den nya ljudsituationen. Andra kan påverkas i sin fortplantning då lätet är en väsentlig del av partnerkommunikationen. Vidare kan vissa fågelarter behöva flytta till ett annat habitat på grund av att de inte kunnat anpassa sig (Gill et. Al. 1999, Helldin 2004). Fågelinventeringar för nybyggnation av motorväg E6 Tanumshede, Norra Bohuslän redovisar antalet fåglar innan och efter motorvägens öppnande den 7 juli 2015. Hypotesen att ljudnivåer skiljer sig i nivå med avstånd från motorvägen och jämfört med referensskog bekräftades. Däremot visar analyser med en ANOVA inte på att antalet fåglar är påverkat av en högre ljudnivå. En del fågelarter uppvisar en signifikant ökning eller minskning i antal, vid analys av dessa fåglars kommunikationsfrekvenser kunde ingen signifikant skillnad ses. Det har inte funnits tillräckligt underlag för att göra en bedömning av mer sällsynta arter som eventuellt skulle vara mer påverkade av en förändrad ljudbild.

Abstract [en]

Studies have shown that birds are affected by increased noise levels and changes in sound frequencies (Kociolek et al. 2011). Different bird species differ in their sensitivity to noise disturbance. Some species can adapt and change their communication to the new sound situation, whereas others may be affected in their reproduction because sound in an essential part of partner communication. Furthermore, some species may need to move to another habitat because they could not adapt to the new sound situation (Gill et al. 1999, Helldin 2004). Birds inventories for the new motorway construction, E6 Tanumshede North Bohuslän, report the numbers and species of birds before and after the opening of the motorway on July 7, 2015. The hypothesis that noise levels differ at the distance from the highway and compared to reference forests were confirmed. On the other hand, analyses with an ANOVA do not indicate that the number of birds is affected by a higher noise level. Some bird species showed a significant increase in numbers after roadwork, whereas others decreased. No significant difference could be seen in the analysis of these birds’ communication sound frequencies. There has been insufficient support to make an assessment of more rare species that might be more affected by a changing noise levels.

Place, publisher, year, edition, pages
2018. , p. 12
Keywords [en]
Noise pollution; Road disturbance; Anthropogenic sound; Bird population
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:kau:diva-68555OAI: oai:DiVA.org:kau-68555DiVA, id: diva2:1232550
External cooperation
enviroplanning
Subject / course
Biology
Educational program
Biology programme, 180 hp
Supervisors
Examiners
Available from: 2018-10-04 Created: 2018-07-11 Last updated: 2018-10-04Bibliographically approved

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