Pan-Arctic plankton community structure and its global connectivity

• Autores: Ibarbalz, Federico Matias; Henry, Nicolas; Mahé, Frédéric; Ardyna, Mathieu; Zingone, Adriana; Scalco, Eleonora; Lovejoy, Connie; Lombard, Fabien; Jaillon, Olivier; Iudicone, Daniele; Malviya, Shruti; Sullivan, Matthew B.; Chaffron, Samuel; Karsenti, Eric; Babin, Marcel; Boss, Emmanuel; Wincker, Patrick; Zinger, Lucie; de Vargas, Colomban; Bowler, Chris; Karp Boss, Lee
• Año de publicación: 2023
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: ADVECTION; ENVIRONMENTAL FILTERING; GLOBAL CHANGE; MARINE PROTISTS; PHYTOPLANKTON; UNICELLULAR
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

The Arctic Ocean (AO) is being rapidly transformed by global warming, but its biodiversity remains understudied for many planktonic organisms, in particular for unicellular eukaryotes that play pivotal roles in marine food webs and biogeochemical cycles. The aim of this study was to characterize the biogeographic ranges of species that comprise the contemporary pool of unicellular eukaryotes in the AO as a first step toward understanding mechanisms that structure these communities and identifying potential target species for monitoring. Leveraging the Tara Oceans DNA metabarcoding data, we mapped the global distributions of operational taxonomic units (OTUs) found on Arctic shelves into five biogeographic categories, identified biogeographic indicators, and inferred the degree to which AO communities of unicellular eukaryotes share members with assemblages from lower latitudes. Arctic/Polar indicator OTUs, as well as some globally ubiquitous OTUs, dominated the detection and abundance of DNA reads in the Arctic samples. OTUs detected only in Arctic samples (Arctic-exclusives) showed restricted distribution with relatively low abundances, accounting for 10-16% of the total Arctic OTU pool. OTUs with high abundances in tropical and/or temperate latitudes (non-Polar indicators) were also found in the AO but mainly at its periphery. We observed a large change in community taxonomic composition across the Atlantic-Arctic continuum, supporting the idea that advection and environmental filtering are important processes that shape plankton assemblages in the AO. Altogether, this study highlights the connectivity between the AO and other oceans, and provides a framework for monitoring and assessing future changes in this vulnerable ecosystem.
Fil: Ibarbalz, Federico Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Ministerio de Defensa. Perfectura Naval Argentina; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Ecole Normale Supérieure; Francia. Instituto Franco-Argentino sobre Estudios del Clima y sus Impactos; Argentina
Fil: Henry, Nicolas. Université Pierre et Marie Curie; Francia. Sorbonne University; Francia
Fil: Mahé, Frédéric. Plant Health Institute; Francia
Fil: Ardyna, Mathieu. University of Stanford; Estados Unidos. Laboratoire d’Océanographie de Villefranche; Francia. Laval University; Canadá
Fil: Zingone, Adriana. Stazione Zoologica Anton Dohrn; Italia
Fil: Scalco, Eleonora. Stazione Zoologica Anton Dohrn; Italia
Fil: Lovejoy, Connie. Laval University; Canadá
Fil: Lombard, Fabien. Laboratoire d’Océanographie de Villefranche; Francia. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia
Fil: Jaillon, Olivier. Institut de Biologie François Jacob; Francia. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia
Fil: Iudicone, Daniele. Stazione Zoologica Anton Dohrn; Italia
Fil: Malviya, Shruti. Ecole Normale Supérieure; Francia
Fil: Sullivan, Matthew B.. Ohio State University; Estados Unidos
Fil: Chaffron, Samuel. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia. Universite de Nantes; Francia
Fil: Karsenti, Eric. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia. European Molecular Biology Laboratory; Alemania
Fil: Babin, Marcel. Laval University; Canadá
Fil: Boss, Emmanuel. University of Maine; Estados Unidos
Fil: Wincker, Patrick. Institut de Biologie François Jacob; Francia. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia
Fil: Zinger, Lucie. Ecole Normale Supérieure; Francia. Naturalis Biodiversity Center; Países Bajos
Fil: de Vargas, Colomban. Université Pierre et Marie Curie; Francia. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia. Sorbonne University; Francia
Fil: Bowler, Chris. Ecole Normale Supérieure; Francia. Research Federation for the Study of Global Ocean Systems Ecology and Evolution; Francia
Fil: Karp Boss, Lee. University of Maine; Estados Unidos