FN Archimer Export Format
PT J
TI Trophic pathways of phytoplankton size classes through the zooplankton food web over the spring transition period in the north-west Mediterranean Sea
BT 
AF HUNT, Brian P. V.
   CARLOTTI, Francois
   DONOSO, Katty
   PAGANO, Marc
   D'ORTENZIO, Fabrizio
   TAILLANDIER, Vincent
   CONAN, Pascal
AS 1:1,2,3;2:3;3:3;4:3;5:4;6:4;7:5;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ British Columbia, Inst Oceans & Fisheries, Vancouver, BC, Canada.
   Hakai Inst, Heriot Bay, BC, Canada.
   Univ Toulon & Var, Aix Marseille Univ, CNRS, IRD,MIO UM 110,Mediterranean Inst Oceanog, Marseille, France.
   UPMC Univ Paris 06, Sorbonne Univ, CNRS, Lab Oceanog Villefranche,UPMC,UMR 7093, Paris, France.
   UPMC Univ Paris 06, Sorbonne Univ, CNRS, UMR7621,Lab Oceanog Microbienne,Observ Oceanol, Banyuls Sur Mer, France.
C2 UNIV BRITISH COLUMBIA, CANADA
   HAKAI INST, CANADA
   UNIV TOULON, FRANCE
   UNIV PARIS 06, FRANCE
   UNIV PARIS 06, FRANCE
IF 2.711
TC 24
UR https://archimer.ifremer.fr/doc/00466/57753/60024.pdf
   https://archimer.ifremer.fr/doc/00466/57753/60025.pdf
LA English
DT Article
CR MOOSE-GE
DE ;zooplankton;isotopes;food web;phytoplankton;trophic pathways
AB Knowledge of the relative contributions of phytoplankton size classes to zooplankton biomass is necessary to understand food-web functioning and response to climate change. During the Deep Water formation Experiment (DEWEX), conducted in the north-west Mediterranean Sea in winter (February) and spring (April) of 2013, we investigated phytoplankton-zooplankton trophic links in contrasting oligotrophic and eutrophic conditions. Size fractionated particulate matter (pico-POM, nano-POM, and micro-POM) and zooplankton (64 to >4000 mu m) composition and carbon and nitrogen stable isotope ratios were measured inside and outside the nutrient-rich deep convection zone in the central Liguro-Provencal basin. In winter, phytoplankton biomass was low (0.28 mg m(-3)) and evenly spread among picophytoplankton, nanophytoplankton, and microphytoplankton. Using an isotope mixing model, we estimated average contributions to zooplankton biomass by pico-POM, nano-POM, and micro-POM of 28, 59, and 15%, respectively. In spring, the nutrient poor region outside the convection zone had low phytoplankton biomass (0.58 mg m(-3)) and was dominated by pico/nanophytoplankton. Estimated average contributions to zooplankton biomass by pico-POM, nano-POM, and micro-POM were 64, 28 and 10%, respectively, although the model did not differentiate well between pico-POM and nano-POM in this region. In the deep convection zone, spring phytoplankton biomass was high (1.34 mg m(-3)) and dominated by micro/nano phytoplankton. Estimated average contributions to zooplankton biomass by pico-POM, nano-POM, and micro-POM were 42, 42, and 20%, respectively, indicating that a large part of the microphytoplankton biomass may have remained ungrazed. 
PY 2017
PD AUG
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU Amer Geophysical Union
VL 122
IS 8
UT 000410790600015
BP 6309
EP 6324
DI 10.1002/2016JC012658
ID 57753
ER

EF