Please use this identifier to cite or link to this item: https://doi.org/10.1111/nph.15234
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dc.titleLosing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses
dc.contributor.authorCollier, Catherine J
dc.contributor.authorLanglois, Lucas
dc.contributor.authorOw, Yan
dc.contributor.authorJohansson, Charlotte
dc.contributor.authorGiammusso, Manuela
dc.contributor.authorAdams, Matthew P
dc.contributor.authorO'Brien, Katherine R
dc.contributor.authorUthicke, Sven
dc.date.accessioned2022-07-27T02:56:39Z
dc.date.available2022-07-27T02:56:39Z
dc.date.issued2018-08-01
dc.identifier.citationCollier, Catherine J, Langlois, Lucas, Ow, Yan, Johansson, Charlotte, Giammusso, Manuela, Adams, Matthew P, O'Brien, Katherine R, Uthicke, Sven (2018-08-01). Losing a winner: thermal stress and local pressures outweigh the positive effects of ocean acidification for tropical seagrasses. NEW PHYTOLOGIST 219 (3) : 1005-1017. ScholarBank@NUS Repository. https://doi.org/10.1111/nph.15234
dc.identifier.issn0028646X
dc.identifier.issn14698137
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/229252
dc.description.abstractSeagrasses are globally important coastal habitat-forming species, yet it is unknown how seagrasses respond to the combined pressures of ocean acidification and warming of sea surface temperature. We exposed three tropical species of seagrass (Cymodocea serrulata, Halodule uninervis, and Zostera muelleri) to increasing temperature (21, 25, 30, and 35°C) and pCO2 (401, 1014, and 1949 μatm) for 7 wk in mesocosms using a controlled factorial design. Shoot density and leaf extension rates were recorded, and plant productivity and respiration were measured at increasing light levels (photosynthesis–irradiance curves) using oxygen optodes. Shoot density, growth, photosynthetic rates, and plant-scale net productivity occurred at 25°C or 30°C under saturating light levels. High pCO2 enhanced maximum net productivity for Z. muelleri, but not in other species. Z. muelleri was the most thermally tolerant as it maintained positive net production to 35°C, yet for the other species there was a sharp decline in productivity, growth, and shoot density at 35°C, which was exacerbated by pCO2. These results suggest that thermal stress will not be offset by ocean acidification during future extreme heat events and challenges the current hypothesis that tropical seagrass will be a ‘winner’ under future climate change conditions.
dc.language.isoen
dc.publisherWILEY
dc.sourceElements
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectPlant Sciences
dc.subjectclimate change
dc.subjectCymodocea serrulata
dc.subjectGreat Barrier Reef
dc.subjectHalodule uninervis
dc.subjectinteractive effects
dc.subjectocean acidification
dc.subjectocean warming
dc.subjectZostera muelleri
dc.subjectSITU CO2 ENRICHMENT
dc.subjectEELGRASS ZOSTERA-MARINA
dc.subjectCLIMATE-CHANGE
dc.subjectINCREASED TEMPERATURE
dc.subjectPHOTOSYNTHESIS
dc.subjectGROWTH
dc.subjectRESPIRATION
dc.subjectPRODUCTIVITY
dc.subjectSENSITIVITY
dc.subjectTOLERANCE
dc.typeArticle
dc.date.updated2022-07-20T02:47:23Z
dc.contributor.departmentTROPICAL MARINE SCIENCE INSTITUTE
dc.description.doi10.1111/nph.15234
dc.description.sourcetitleNEW PHYTOLOGIST
dc.description.volume219
dc.description.issue3
dc.description.page1005-1017
dc.published.statePublished
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