A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean

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dc.contributor.authorRoxy, Mathew Koll
dc.contributor.authorModi, Aditi
dc.contributor.authorMurtugudde, Raghu
dc.contributor.authorValsala, Vinu
dc.contributor.authorPanickal, Swapna
dc.contributor.authorPrasanna Kumar, S
dc.contributor.authorRavichandran, M
dc.contributor.authorVichi, Marcello
dc.contributor.authorLévy, Marina
dc.date.accessioned2021-10-08T07:04:08Z
dc.date.available2021-10-08T07:04:08Z
dc.date.issued2016
dc.description.abstractAmong the tropical oceans, the western Indian Ocean hosts one of the largest concentrations of marine phytoplankton blooms in summer. Interestingly, this is also the region with the largest warming trend in sea surface temperatures in the tropics during the past century—although the contribution of such a large warming to productivity changes has remained ambiguous. Earlier studies had described the western Indian Ocean as a region with the largest increase in phytoplankton during the recent decades. On the contrary, the current study points out an alarming decrease of up to 20% in phytoplankton in this region over the past six decades. We find that these trends in chlorophyll are driven by enhanced ocean stratification due to rapid warming in the Indian Ocean, which suppresses nutrient mixing from subsurface layers. Future climate projections suggest that the Indian Ocean will continue to warm, driving this productive region into an ecological desert.
dc.identifier.apacitationRoxy, M. K., Modi, A., Murtugudde, R., Valsala, V., Panickal, S., Prasanna Kumar, S., ... Lévy, M. (2016). A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean. <i>Geophysical Research Letters</i>, 43(2), 826 - 833. http://hdl.handle.net/11427/34435en_ZA
dc.identifier.chicagocitationRoxy, Mathew Koll, Aditi Modi, Raghu Murtugudde, Vinu Valsala, Swapna Panickal, S Prasanna Kumar, M Ravichandran, Marcello Vichi, and Marina Lévy "A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean." <i>Geophysical Research Letters</i> 43, 2. (2016): 826 - 833. http://hdl.handle.net/11427/34435en_ZA
dc.identifier.citationRoxy, M.K., Modi, A., Murtugudde, R., Valsala, V., Panickal, S., Prasanna Kumar, S., Ravichandran, M. & Vichi, M. et al. 2016. A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean. <i>Geophysical Research Letters.</i> 43(2):826 - 833. http://hdl.handle.net/11427/34435en_ZA
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.ris TY - Journal Article AU - Roxy, Mathew Koll AU - Modi, Aditi AU - Murtugudde, Raghu AU - Valsala, Vinu AU - Panickal, Swapna AU - Prasanna Kumar, S AU - Ravichandran, M AU - Vichi, Marcello AU - Lévy, Marina AB - Among the tropical oceans, the western Indian Ocean hosts one of the largest concentrations of marine phytoplankton blooms in summer. Interestingly, this is also the region with the largest warming trend in sea surface temperatures in the tropics during the past century—although the contribution of such a large warming to productivity changes has remained ambiguous. Earlier studies had described the western Indian Ocean as a region with the largest increase in phytoplankton during the recent decades. On the contrary, the current study points out an alarming decrease of up to 20% in phytoplankton in this region over the past six decades. We find that these trends in chlorophyll are driven by enhanced ocean stratification due to rapid warming in the Indian Ocean, which suppresses nutrient mixing from subsurface layers. Future climate projections suggest that the Indian Ocean will continue to warm, driving this productive region into an ecological desert. DA - 2016 DB - OpenUCT DP - University of Cape Town IS - 2 J1 - Geophysical Research Letters LK - https://open.uct.ac.za PY - 2016 SM - 0094-8276 SM - 1944-8007 T1 - A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean TI - A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean UR - http://hdl.handle.net/11427/34435 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34435
dc.identifier.vancouvercitationRoxy MK, Modi A, Murtugudde R, Valsala V, Panickal S, Prasanna Kumar S, et al. A reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean. Geophysical Research Letters. 2016;43(2):826 - 833. http://hdl.handle.net/11427/34435.en_ZA
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceGeophysical Research Letters
dc.source.journalissue2
dc.source.journalvolume43
dc.source.pagination826 - 833
dc.source.urihttps://dx.doi.org/10.1002/2015GL066979
dc.subject.otherIndian Ocean warming
dc.subject.othermarine phytoplankton
dc.subject.otherchlorophyll trends
dc.subject.otherocean stratification
dc.subject.otherArabian Sea
dc.subject.otherclimate projections
dc.titleA reduction in marine primary productivity driven by rapid warming over the tropical Indian Ocean
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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