FN Archimer Export Format
PT J
TI Phytoplankton taxonomic and functional diversity patterns across a coastal tidal front
BT 
AF Ramond, Pierre
   Siano, Raffaele
   Schmitt, Sophie
   de Vargas, Colomban
   Marié, Louis
   Memery, Laurent
   Sourisseau, Marc
AS 1:1,2,3;2:2;3:2;4:1,4;5:5;6:6;7:2;
FF 1:PDG-ODE-DYNECO-PELAGOS;2:PDG-ODE-DYNECO-PELAGOS;3:PDG-ODE-DYNECO-PELAGOS;4:;5:PDG-ODE-LOPS-OC;6:;7:PDG-ODE-DYNECO-PELAGOS;
C1 Sorbonne Université, CNRS-UMR7144-Station Biologique de Roscoff, Place Georges Teissier, 29688, Roscoff, France
   Ifremer-Centre de Brest, DYNECO/Pelagos, Technopôle Brest Iroise, 29280, Plouzané, France
   Department of Marine Microbiology and Biogeochemistry, NIOZ-Royal Netherlands Institute for Sea Research and Utrecht University, Den Burg, The Netherlands
   Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/GOSEE, 3 rue Michel-Ange, 75016, Paris, France
   Laboratoire d’Océanographie Physique et Spatiale (LOPS), UMR 6523 Univ. Brest, CNRS, IFREMER, IRD, Plouzané, France
   Laboratoire des Sciences de l’Environnement MARin (LEMAR), UMR 6539 Univ. Brest, CNRS, IFREMER, IRD, Plouzané, France
C2 UNIV SORBONNE, FRANCE
   IFREMER, FRANCE
   INST SEA RESEARCH (NIOZ), NETHERLANDS
   GO SEE, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-ODE-DYNECO-PELAGOS
   PDG-ODE-LOPS-OC
UM LOPS
   LEMAR
IN WOS Ifremer UPR
   WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.997
TC 15
UR https://archimer.ifremer.fr/doc/00677/78933/81307.pdf
   https://archimer.ifremer.fr/doc/00677/78933/81310.pdf
LA English
DT Article
CR M2BIPAT LEG1
   M2BIPAT LEG2
BO Côtes De La Manche
   Albert Lucas
AB Oceanic physics at fine scale; e.g. eddies, fronts, filaments; are notoriously difficult to sample. However, an increasing number of theoretical approaches hypothesize that these processes affect phytoplankton diversity which have cascading effects on regional ecosystems. In 2015, we targeted the Iroise Sea (France) and evidenced the setting up of the Ushant tidal front from the beginning of spring to late summer. Seawater samples were taken during three sampling cruises and DNA-barcoding allowed us to investigate patterns of eukaryotic phytoplankton diversity across this front. First focusing on patterns of taxonomic richness, we evidenced that the front harbored a hotspot of eukaryotic phytoplankton diversity sustained throughout summer. We then detail the ecological processes leading to the formation of this hotspot by studying shifts in community composition across the Iroise Sea. Physical mixing mingled the communities surrounding the front, allowing the formation of a local ecotone, but it was cycles of disturbances and nutrient inputs over the front that allowed a decrease in competitive exclusion, which maintained a higher diversity of rare phytoplankton taxa. These processes did not select a specific ecological strategy as inferred by a trait approach coupled to our taxonomic approach. Instead the front favored higher richness within widespread strategies, resulting in functional redundancy. We detail how fine-scale ocean physics affect phytoplankton diversity and suppose that this interplay is a major control on regional ecosystems. 
PY 2021
PD JAN
SO Scientific Reports
SN 2045-2322
PU Springer Science and Business Media LLC
VL 11
IS 1
UT 000616809300002
DI 10.1038/s41598-021-82071-0
ID 78933
ER

EF