FN Archimer Export Format
PT J
TI Decadal trajectories of phytoplankton communities in contrasted estuarine systems in an epicontinental sea
BT 
AF Lefran, Angeline
   Fariñas, Tania Hernández
   Gohin, Francis
   Claquin, Pascal
AS 1:1,2;2:1;3:3;4:2,4;
FF 1:PDG-ODE-LITTORAL-LERN;2:;3:PDG-ODE-DYNECO-PELAGOS;4:;
C1 IFREMER, Laboratoire Environnement Ressource Normandie, LER/N, Avenue du Général de Gaulle, 14520, Port-en-Bessin, France
   Normandie Universités, Université de Caen Normandie, Centre de Recherches en Environnement Côtier (CREC) - Station Marine, BP49, 54, rue du Docteur Charcot, 14530, Luc-sur-Mer, France
   IFREMER, Département Dynamiques de l'Environnement Côtier, DYNECO/PELAGOS, Ifremer Brest, BP 70, 29280, Plouzané Brittany, France
   Unité Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA, UMR 7208), Sorbonne Universités, Muséum National d'Histoire Naturelle, CNRS, Université Pierre et Marie Curie, Université de Caen Normandie, IRD 207, Université des Antilles, Esplanade de la Paix, F-14032, Caen, France
C2 IFREMER, FRANCE
   UNIV NORMANDIE, FRANCE
   IFREMER, FRANCE
   MNHN, FRANCE
SI PORT-EN-BESSIN
   BREST
SE PDG-ODE-LITTORAL-LERN
   PDG-ODE-DYNECO-PELAGOS
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 3.229
TC 3
UR https://archimer.ifremer.fr/doc/00696/80794/84275.pdf
   https://archimer.ifremer.fr/doc/00696/80794/84276.docx
   https://archimer.ifremer.fr/doc/00696/80794/85097.pdf
LA English
DT Article
DE ;Phytoplankton;Communities;Estuaries;Coastal;Trajectories;Co-inertia
AB In coastal areas, global changes are known to affect estuaries and their plume leading to water temperature increase and river discharge variations, which are two of the main drivers controlling phytoplankton dynamics. This paper aims at understanding the past 10 years' variations in term of communities' stability and trajectories along with their relationship with the environment. Considering the high environmental variability along coastal areas, we focused our study on six contrasted estuarine systems from the eastern English Channel. Using monthly monitoring from 2008 to 2019, the response of the micro-phytoplankton compartment was investigated through the abundances of 110 species and several abiotic parameters' records. The results indicate an overall stability in community composition with an average of 30–40% similarity between pairs of samples over the study period. The phytoplankton assemblages also display greater spatial heterogeneity during summer in comparison with other seasons. The co-inertia analysis highlighted four separate systems linked to major drivers; a system under strong river and nutrient flows influence, a well-mixed and oxygenized estuary, a system challenged by offshore marine waters, and finally a system under shellfish farms pressure. This structuration is built from the dominance of a handful of species that differs from one place to another, which explains why phytoplankton is mostly site specific. Additionally, the low variations lead by few species’ dominance also explains the inter-annual stability noticed during summer at each area, in spite of the high diversity observed. 
PY 2021
PD SEP
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Elsevier BV
VL 258
UT 000704391100004
DI 10.1016/j.ecss.2021.107409
ID 80794
ER

EF