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dc.contributor.authorRontani, J-F
dc.contributor.authorSmik, L
dc.contributor.authorHa, S-Y
dc.contributor.authorMin, J-O
dc.contributor.authorBelt, ST
dc.date.accessioned2022-04-13T16:58:56Z
dc.date.issued2022-04-20
dc.identifier.issn0304-4203
dc.identifier.issn1872-7581
dc.identifier.other104109
dc.identifier.urihttp://hdl.handle.net/10026.1/19033
dc.description.abstract

Lipids and their degradation products were investigated in samples of suspended particulate matter (SPM) collected in summer 2015 from surface waters of a South-North transect (ca. 65–81°N) of the Chukchi Sea. This material appeared to be composed mainly of diatoms (dominated by Thalassiosirales) and copepod faecal pellet debris. The high solar irradiances measured in the surface waters (up to 500 W m−2) favour chlorophyll (sensitizer) photobleaching at the expense of Type II photosensitized oxidation of unsaturated lipid components of phyto- and zooplankton (photodynamic effect). The weak photoreactivity of wax esters of herbivorous zooplankton in these SPM samples contrasts with previous observations of strong photooxidation of these compounds in sinking particles, which suggests that the photodynamic effect should be favoured in large faecal pellets of herbivorous copepods sinking quickly in weakly irradiated zones. Autoxidation (free radical induced oxidation) processes operating in all oxic environments appeared to be particularly efficient in faecal pellets of omnivorous and carnivorous zooplankton and limited in those of herbivorous origin. These differences were attributed to the consumption of algal antioxidants (such as mycosporine-like amino acids and carotenoids) during the diet of omnivorous and carnivorous copepods, favouring the involvement of free radical oxidation processes.

dc.format.extent104109-104109
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.subjectChukchi Sea
dc.subjectSPM
dc.subjectLipids
dc.subjectBiotic and abiotic oxidation
dc.titleBiotic and abiotic degradation of suspended particulate lipids along a transect in the Chukchi Sea
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000793067700002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.volume241
plymouth.publisher-urlhttp://dx.doi.org/10.1016/j.marchem.2022.104109
plymouth.publication-statusPublished
plymouth.journalMarine Chemistry
dc.identifier.doi10.1016/j.marchem.2022.104109
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dcterms.dateAccepted2022-03-28
dc.rights.embargodate2023-10-6
dc.identifier.eissn1872-7581
rioxxterms.versionofrecord10.1016/j.marchem.2022.104109
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2022-04
rioxxterms.typeJournal Article/Review


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