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dc.contributor.authorBozman, Andrea
dc.contributor.authorTitelman, Josefin
dc.contributor.authorKaartvedt, Stein
dc.contributor.authorEiane, Ketil
dc.contributor.authorAksnes, Dag Lorents
dc.PublishedBozman A, Titelman J, Kaartvedt S, Eiane K, Aksnes DL. Jellyfish distribute vertically according to irradiance. Journal of Plankton Research. 2017;39(2):280-289eng
dc.description.abstractWe tested the hypothesis that the coronate jellyfish Periphylla periphylla distributes vertically according to a preferential range of absolute light intensities. The study was carried out in Lurefjorden, Norway, a fjord characterized by mass occurrences of this jellyfish. We collected data on the vertical distribution of P. periphylla medusa during day, dusk and night periods from video observations by a remotely operated vehicle in relation to estimated ambient light levels. Our results suggest that large P. periphylla (average size in catches ~9 cm diameter) avoided total irradiance levels above 5×10−3 µmol quanta m−2 s−1. Nearly two-thirds of the population stayed above irradiance of 10−7 µmol quanta m−2 s−1 during daytime, while some individuals occupied much darker water. Thus, part of the population appeared to distribute vertically and undertake diel vertical migration (DVM) according to a preferential range of light intensities.en_US
dc.publisherOxford University Pressen_US
dc.rightsAttribution CC BYeng
dc.subjectPeriphylla periphyllaeng
dc.subjectlight attenuationeng
dc.subjectdiel vertical migrationeng
dc.subjectjellyfish behavioreng
dc.titleJellyfish distribute vertically according to irradianceen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2017 The Author(s)en_US
dc.source.journalJournal of Plankton Research

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