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  • Rendina, FrancescoDepartment of Science and Technology, University of Naples “Parthenope”, Centro Direzionale, Naples, Italy; National Interuniversity Consortium for Marine Sciences (CoNISMa), Rome, Italy (författare)

Physiological response of the coralline alga Corallina officinalis L. to both predicted long-term increases in temperature and short-term heatwave events

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • Elsevier,2019
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:umu-223723
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-223723URI
  • https://doi.org/10.1016/j.marenvres.2019.104764DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Climate change is leading to an increase of mean sea surface temperatures and extreme heat events. There is an urgent need to better understand the capabilities of marine macroalgae to adapt to these rapid changes. In this study, the responses of photosynthesis, respiration, and calcification to elevated temperature in a global warming scenario were investigated in the coralline alga Corallina officinalis. Algae were cultured for 7 weeks under 4 temperature treatments: (1) control under ambient-summer conditions (C, ~20 °C), (2) simulating a one-week heatwave of 1 °C (HW, Tcontrol+1 °C), (3) elevated temperature (+3, Tcontrol +3 °C), (4) combination of the two previous treatments (HW+3, T+3+1 °C). After exposure at T+3 (up to a Tmax of ~23 °C), respiration and photosynthesis increased significantly. After 5 weeks, calcification rates were higher at elevated temperatures (T+3 and THW+3) compared to Tcontrol, but at the end of the experiment (7 weeks) calcification decreased significantly at those temperatures beyond the thermal optimum (six-fold at T+3, and three-fold at THW+3, respectively). The same trend was noted for all the physiological processes, suggesting that a prolonged exposure to high temperatures (7 weeks up to T+3) negatively affect the physiology of C. officinalis, as a possible consequence of thermal stress. A one-week heatwave of +1 °C with respect to Tcontrol (at THW) did not affect respiration, photosynthesis, or calcification rates. Conversely, a heatwave of 1 °C, when combined with the 3 °C increase predicted by the end of the century (at THW+3), induced a reduction of physiological rates. Continued increases in both the intensity and frequency of heatwaves under anthropogenic climate change may lead to reduced growth and survival of primary producers such as C. officinalis.

Ämnesord och genrebeteckningar

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

  • Bouchet, Phil J.Centre for Research into Ecological & Environmental Modelling, University of St Andrews, St Andrews, UK; School of Mathematics and Statistics, University of St Andrews, St Andrews, Scotland, UK (författare)
  • Appolloni, LucaDepartment of Science and Technology, University of Naples “Parthenope”, Centro Direzionale, Naples, Italy; National Interuniversity Consortium for Marine Sciences (CoNISMa), Rome, Italy (författare)
  • Russo, Giovanni F.Department of Science and Technology, University of Naples “Parthenope”, Centro Direzionale, Naples, Italy; National Interuniversity Consortium for Marine Sciences (CoNISMa), Rome, Italy (författare)
  • Sandulli, RobertoDepartment of Science and Technology, University of Naples “Parthenope”, Centro Direzionale, Naples, Italy; National Interuniversity Consortium for Marine Sciences (CoNISMa), Rome, Italy (författare)
  • Kolzenburg, ReginaInstitute of Marine Sciences, University of Portsmouth, Portsmouth, UK,UMFpub(Swepub:umu)reko0035 (författare)
  • Putra, AdityaInstitute of Marine Sciences, University of Portsmouth, Portsmouth, UK (författare)
  • Ragazzola, FedericaInstitute of Marine Sciences, University of Portsmouth, Portsmouth, UK (författare)
  • Department of Science and Technology, University of Naples “Parthenope”, Centro Direzionale, Naples, Italy; National Interuniversity Consortium for Marine Sciences (CoNISMa), Rome, ItalyCentre for Research into Ecological & Environmental Modelling, University of St Andrews, St Andrews, UK; School of Mathematics and Statistics, University of St Andrews, St Andrews, Scotland, UK (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Marine Environmental Research: Elsevier1500141-11361879-0291

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