FN Archimer Export Format
PT J
TI Phytoplankton size changes and diversity loss in the southwestern Mediterranean Sea in relation to long-term hydrographic variability
BT 
AF Ramírez-Romero, Eduardo
   Molinero, Juan-Carlos
   Sommer, Ulrich
   Salhi, Noussaiba
   Kéfi - Daly Yahia, Ons
   Daly Yahia, Mohamed Néjib
AS 1:1;2:2;3:3;4:4;5:4,5;6:6;
FF 1:;2:;3:;4:;5:;6:;
C1 Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/Miquel Marqués 21, 07190, Esporles, Illes Balears, Spain
   Institut de Recherche pour le Développement, MARBEC, IRD/CNRS/IFREMER/UM, Sète Cedex, France
   GEOMAR Helmholtz Center for Ocean Research, Kiel, Germany, Marine Ecology/Food Webs, Duesternbrooker Weg 20, D-24105, Kiel, Germany
   Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, 1082, Tunis, Tunisia
   IRESA- Carthage University, Tunis El Manar University, LR18ES41, Tunisia
   Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
C2 IMEDEA, SPAIN
   IRD, FRANCE
   IFM GEOMAR, GERMANY
   INAT, TUNISIA
   UNIV CARTHAGE, TUNISIA
   UNIV QATAR, QATAR
UM MARBEC
IN WOS Cotutelle UMR
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 2.929
TC 6
UR https://archimer.ifremer.fr/doc/00602/71405/76566.pdf
LA English
DT Article
DE ;Size structural changes;Diversity loss;Ocean warming;Nanophytoplankton;Phytoplankton diversity;Southwestern mediterranean
AB Structural changes in plankton primary producers have large implications for food web dynamics, energy fluxes and the vertical export of biogenic particulate carbon. Here we examine phytoplankton data spanning the period 1993–2008 from the Bay of Tunis, southwestern Mediterranean Sea, in relation to long term hydroclimate variability. We show a conspicuous shift in the structure of the phytoplankton community characterized by an increase of small-sized species and diversity loss, revealing a dominance of smaller blooming diatoms and cyanobacteria. Such changes were concurrent with marked modifications in hydroclimatic patterns experienced in the Bay of Tunis consisting of a shift towards enhanced winter precipitation together with rising temperatures. This novel study shows an overall rise in the proportion of small phytoplankton cells and a decreasing trend in phytoplankton diversity in the southern Mediterranean area. These findings warn of a potential decline of trophic efficiency and lesser food web stability resulting from mean size reduction and the diversity loss. 
PY 2020
PD APR
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Elsevier BV
VL 235
UT 000527915700034
DI 10.1016/j.ecss.2019.106574
ID 71405
ER

EF