Offshore wind farms - ecological effects of noise and habitat alteration on fish

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Andersson, Mathias H.,1976-Stockholms universitet,Zoologiska institutionen (författare)

Offshore wind farms - ecological effects of noise and habitat alteration on fish

BokEngelska2011

Förlag, utgivningsår, omfång ...

Stockholm :Department of Zoology, Stockholm University,2011
48 s.
electronicrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:su-54049
ISBN:9789174471724
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-54049URI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:vet swepub-contenttype
Ämneskategori:dok swepub-publicationtype

Anmärkningar

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3, 4 and 5: Manuscripts.
There are large gaps in our understanding how fish populations are affected by the anthropogenic noise and the alteration of habitat caused by the construction and operation of offshore wind farms. These issues are of great importance as the construction of offshore wind farms will increase all over the world in the near future. This thesis studies these effects with a focus on fish. The wind turbine foundations function as artificial reefs and are colonized by invertebrates, algae and fish. The epibenthic assemblages are influenced by factors such as hydrographical parameters, time of submergence, distance to natural hard bottom, material and texture (PAPER I, II). Once an epibenthic assemblage has been developed, fish utilize it for different ecosystem services such as food, shelter, and spawning and nursery area. Benthic and semi-pelagic species show a stronger response to the introduced foundation than pelagic species, as it is the bottom habitat that has mainly been altered (PAPER I, II). Pelagic species could be positively affected by the increased food availability - but it takes time and the effect is local. Construction noise like pile driving creates high levels of sound pressure and acoustic particle motion in the water and seabed. This noise induces behavioural reactions in cod (Gadus morhua) and sole (Solea solea). These reactions could occur up to tens of kilometres distance from the source (PAPER III). During power production, the wind turbines generate a broadband noise with a few dominating tones (PAPER IV, V), which are detectable by sound pressure sensitive fish at a distance of several kilometres even though intense shipping occurs in the area. Motion sensitive species will only detect the turbine noise at around a ten meter distance. Sound levels are only high enough to possibly cause a behavioural reaction within meters from a turbine (PAPER IV, V).

Ämnesord och genrebeteckningar

NATURVETENSKAP Biologi Ekologi hsv//swe
NATURAL SCIENCES Biological Sciences Ecology hsv//eng
renewable energy
fish population
artificial reef
attraction vs. production
habitat structure
reef effect
FAD
bioacoustics
noise disturbance
fish behaviour
detection range
threshold
masking
fish communication and hearing
Marine ecology
Marin ekologi
zoologisk ekologi
Animal Ecology

Biuppslag (personer, institutioner, konferenser, titlar ...)

Nylin, Sören,ProfessorStockholms universitet,Avdelningen för zoologisk ekologi(Swepub:su)snylin (preses)
Wahlberg, Magnus,ProfessorUniversity of Southern Denmark, Institute of Biology (opponent)
Stockholms universitetZoologiska institutionen (creator_code:org_t)

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Av författaren/redakt...: Andersson, Mathi ...; Nylin, Sören, Pr ...; Wahlberg, Magnus ...

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NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Ekologi

Av lärosätet: Stockholms universitet

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