Seasonal dynamics of marine protist communities in tidally mixed coastal waters
Type | Article | ||||||||||||||||
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Date | 2022-07 | ||||||||||||||||
Language | English | ||||||||||||||||
Author(s) | Caracciolo Mariarita1, Rigaut‐jalabert Fabienne2, Romac Sarah1, Mahé Frédéric3, Forsans Samuel1, Gac Jean‐philippe1, Arsenieff Laure4, Manno Maxime1, Chaffron Samuel5, 6, Cariou Thierry7, Hoebeke Mark8, Bozec Yann1, Goberville Eric9, Le Gall Florence1, Guilloux Loïc1, 10, Baudoux Anne‐claire1, de Vargas Colomban1, 5, Not Fabrice1, Thiébaut Eric1, 11, Henry Nicolas1, 5, 8, Simon Nathalie1 | ||||||||||||||||
Affiliation(s) | 1 : Sorbonne Université, CNRS, Station Biologique de Roscoff, AD2M, UMR7144, Place Georges Tessier, 29680 Roscoff, France. 2 : Sorbonne Université, CNRS, Station Biologique de Roscoff, FR2424, 29680 Roscoff, France. 3 : Cirad, UMR BGPI, F-34398, Montpellier, France 4 : Faculty of Biology, Technion – Israel Institute of Technology, Haifa 3200003, Israel 5 : Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans GOSEE, 3 rue Michel-Ange, 75016 Paris, France 6 : Laboratoire des Sciences du Numérique de Nantes (LS2N), CNRS, UMR6004, Université de Nantes, Ecole Centrale de Nantes, 44322 Nantes, France 7 : Institut de recherche pour le développement (IRD), Délégation Régionale Ouest, IMAGO, Plouzané, France. 8 : CNRS, Sorbonne Université, FR 2424, ABiMS Platform, Station Biologique de Roscoff, 29680 Roscoff, France 9 : Unité biologie des organismes et écosystèmes aquatiques (BOREA), Muséum National D’Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, CNRS, IRD, CP53, 61 rue Buffon 75005 Paris, France 10 : Mediterranean Institute of Oceanography (MIO), Campus de Luminy case 901, 163 Av. de Luminy, 13288 Marseille cedex 9, France 11 : Sorbonne Université, CNRS, OSU STAMAR, UMS2017, 4 Place Jussieu, 75252 Paris cedex 05, France. |
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Source | Molecular Ecology (0962-1083) (Wiley), 2022-07 , Vol. 31 , N. 14 , P. 3761-3783 | ||||||||||||||||
DOI | 10.1111/mec.16539 | ||||||||||||||||
WOS© Times Cited | 13 | ||||||||||||||||
Keyword(s) | annual succession, DNA metabarcoding, marine protists, temporal variability, time-series data, Western English Channel | ||||||||||||||||
Abstract | Major seasonal community reorganizations and associated biomass variations are landmarks of plankton ecology. However, the processes of plankton community turnover rates have not been fully elucidated so far. Here, we analyse patterns of planktonic protist community succession in temperate latitudes, based on quantitative taxonomic data from both microscopy counts (cells > 10 μm) and ribosomal DNA metabarcoding (size fraction > 3 μm, 18S rRNA gene) from plankton samples collected biweekly over 8 years (2009-2016) at the SOMLIT-Astan station (Roscoff, Western English Channel). Based on morphology, diatoms were clearly the dominating group all year round and over the study period. Metabarcoding uncovered a wider diversity spectrum and revealed the prevalence of Dinophyceae and diatoms but also of Cryptophyta, Chlorophyta, Cercozoa, Syndiniales and Ciliophora in terms of read counts and or richness. The use of morphological and molecular analyses in combination allowed improving the taxonomic resolution and to identify the sequence of the dominant species and OTUs (18S V4 rDNA-derived taxa) that drive annual plankton successions. We detected that some of these dominant OTUs were benthic as a result of the intense tidal mixing typical of the French coasts in the English Channel. Our analysis of the temporal structure of community changes point to a strong seasonality and resilience. The temporal structure of environmental variables (especially Photosynthetic Active Radiation, temperature and macronutrients) and temporal structures generated by species life cycles and or species interactions, are key drivers of the observed cyclic annual plankton turnover. |
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