De Clerck, O

Hall-Spencer, JM

Le Gall, L

Milazzo, M

Pena, V

Range, P

European Journal of Phycology

Plymouth Electronic Archive and Research Library

This article was downloaded by: [University of Coruna]On: 02 September 2015, At: 05:00Publisher: Taylor & FrancisInforma Ltd Registered in England and Wales Registered Number: 1072954 Registered office: 5 HowickPlace, London, SW1P 1WGClick for updatesEuropean Journal of PhycologyPublication details, including instructions for authors and subscription information:http://www.tandfonline.com/loi/tejp20PostersPublished online: 20 Aug 2015.To cite this article: (2015) Posters, European Journal of Phycology, 50:sup1, 121-217, DOI:10.1080/09670262.2015.1069493To link to this article:  http://dx.doi.org/10.1080/09670262.2015.1069493PLEASE SCROLL DOWN FOR ARTICLETaylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) containedin the publications on our platform. However, Taylor & Francis, our agents, and our licensors make norepresentations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose ofthe Content. Any opinions and views expressed in this publication are the opinions and views of the authors,and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be reliedupon and should be independently verified with primary sources of information. Taylor and Francis shallnot be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and otherliabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to orarising out of the use of the Content.This article may be used for research, teaching, and private study purposes. Any substantial or systematicreproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in anyform to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http://www.tandfonline.com/page/terms-and-conditionsMarine benthic (sand-dwelling and epiphytic) dinoﬂa-gellates consists of known potentially toxic species,which are harmful to marine organisms as well ashuman by consumption of sea food in mostly tropicaland subtropical region. Occurrence and distribution ofthese species are less studied from temperate region.The benthic dinoﬂagellates in the intertidal zone alongthe coasts of Jeju Island was determined by monthlycollection of sand sediment and macroalgae samplesfrom eight sampling locations from March 2011 toFebruary 2012. Thirty-seven dinoﬂagellate taxa belongto eighteen genera were identiﬁed; twenty six foundonly in sand sediment, seven in macroalgae samplesand four in both samples. The most frequently occur-ring species was Amphidinium carterae, followed byA.operculatum, Coolia malayensis, andOstreopsis ovata,occurred at all sampling stations. G. yasumotoi andGambierdiscus sp. were rarely occurred. The seasonalabundance of epiphytic dinoﬂagellates was also quan-titatively estimated by monthly collection of macroal-gae samples (Rhodophyta, Phaeophyta, andChlorophyta) from six sampling locations from July2012 to June 2013. Ten epiphytic dinoﬂagellate taxa,including eight potentially toxic species Amphidiniumcarterae, A. operculatum, Gambierdiscus sp.,Ostreopsis ovata, Prorocentrum concavum, P. emargi-natum, P. lima, and P. rhathymum, were identiﬁed. Asigniﬁcant change in seasonal abundance was recordedwith maximum (751.82±223.12 cells g−1 wet weight ofalgae; cells g−1 hereafter) in June, followed by October(650.45±225.02 cells g−1) and September (598.02±197.82 cells g−1). O. ovata was the most abundant(338.21±11 cells g−1) in October and Gambierdiscussp. was the least abundant only in September (6.92±16.97 cells g−1) and October (average 6.54±6.54cells g−1) at Hamduk. Signiﬁcantly, highest spatialabundance of total dinoﬂagellates for all sampling sta-tions was found at Hamduk (547.91±315 cells g−1),while it was lowest at Hwasun (232.59±144.93 cellsg−1). Generally, each of the epiphytic dinoﬂagellatesdid not show speciﬁc preference of macroalgae as host.10PO.14ASSESSMENT OF CORALLINE ALGALSPECIES DIVERSITYANDCOMPOSITION ATEUROPEAN CO2 SEEPS USING DNABARCODINGViviana Peña1 (vpena@udc.es), Pedro Range2 (prange@qu.edu.qa), Marco Milazzo3 (marco.milazzo@unipa.it), Olivier De Clerck4 (olivier.declerck@ugent.be), Line Le Gall5 (legall@mnhn.fr) and Jason MHall-Spencer6 (jason.hall-spencer@plymouth.ac.uk)1BIOCOST Research Group, Universidade daCoruña, A Coruña 15071, Spain; 2Department ofEnvironmental and Biological Sciences, QatarUniversity, Doha 2713, Qatar; 3CoNISMa,Dipartimento di Scienze della Terra e del Mare,Universitá di Palermo, Palermo 90123, Italy;4Phycology Research Group, Ghent University, Ghent9000, Belgium; 5Equipe Exploration, Espèces etEvolution, Institut de Systématique, Evolution,Biodiversité, UMR 7205 ISYEB CNRS, MNHN,UPMC, EPHE, Muséum national d’Histoire naturelle(MNHN), Sorbonne Universités, Paris 75005, Franceand 6School of Marine Science and Engineering,Plymouth University, Plymouth PL4 8AA, UnitedKingdomCoralline red algae are one of the most abundantgroups of benthic seaweeds throughout the photiczone. In Europe, they are ecosystem engineers ofhigh-diversity habitats such as maerl beds, coralligen-ous, vermetid reefs/trottoir. A major driver of changein coastal ecosystems is the rise of CO2 levels which iswarming surface waters and reducing the amount ofcarbonate available to calciﬁed organisms. Work atvolcanic seeps has shown that CO2 is a resource forcertain seaweeds but that carbonation causes dissolu-tion of calciﬁed organisms. Volcanic seeps are startingto be used as natural analogues for a high CO2 world,but so far assessments of diversity of coralline algaearound those seeps have not been studied in detail. Wepresent the ﬁrst study focused on coralline speciesdiversity and composition along well constrainedCO2 gradients in two naturally acidiﬁed sites inEurope: Vulcano- Italy- in the Mediterranean, andSao Miguel - Azores- in the Atlantic. Intertidal andsubtidal transects were carried out along establishedCO2 gradients. Both cover and habit for each corallinespecies were recorded, and samples were collected tobe identiﬁed using molecular (DNA barcoding) andmorphological (SEM) approaches. In addition, ele-mental analyses of specimens were examined usingEnergy-dispersive X-ray spectroscopy technique(EDS). Results obtained in terms of potential changesin species diversity and composition will be dis-cussed. From an evolutionary perspective, our studycould shed some light on which coralline lineagesmight be able to persist on low pH environmentsgiven the records of paleo-acidiﬁcation events sincethe origin of this group.10PO.15REALTIME IN SITUMONITORING OFTOXIC ALGAELinda K Medlin1 (lkm@mba.ac.uk), Jahir Orozco2(jahirorozcoholguin@mircrobiaenvironnement.eu),Elise Villa2 (elise.villa@microbiaenvironnement.com) and Delphine Guillebault2 (delphine.Guillebault@microbiaenvironnement.com)Posters 197Downloaded by [University of Coruna] at 05:00 02 September 2015 

ASSESSMENT OF CORALLINE ALGAL SPECIES DIVERSITYAND COMPOSITION AT EUROPEAN CO<sub>2</sub> SEEPS USING DNA BARCODING

ASSESSMENT OF CORALLINE ALGAL SPECIES DIVERSITYAND COMPOSITION AT EUROPEAN CO2 SEEPS USING DNA BARCODING

ASSESSMENT OF CORALLINE ALGAL SPECIES DIVERSITYAND COMPOSITION AT EUROPEAN CO2 SEEPS USING DNA BARCODING

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