FN Archimer Export Format PT J TI Modelling the biogeochemical cycles of elements limiting primary production in the English channel .2. Sensitivity analyses BT AF HOCH, T MENESGUEN, Alain AS 1:1;2:1; FF 1:;2:; C1 IFREMER, CTR BREST, LAB CHIM & MODELISAT CYCLES NAT, DIRECT ENVIRONM & AMENAGEMENT LITTORAL, BP 70, F-29280 PLOUZANE, FRANCE. C2 IFREMER, FRANCE IN WOS Ifremer jusqu'en 2018 IF 1.928 TC 19 UR https://archimer.ifremer.fr/doc/00337/44791/44478.pdf LA English DT Article DE ;English Channel;sensitivity analyses;ecological model AB A general framework for an ecological model of the English Channel was described in the first of this pair of papers. In this study, it was used to investigate the sensitivity of the model to various factors: model structure, parameter values, boundary conditions and forcing variables. These sensitivity analyses show how important quota formulation for phytoplankton growth is, particularly for growth of dinoflagellates. They also stress the major influence of variables and parameters related to nitrogen. The role played by rivers and particularly the river Seine was investigated. Their influence on global English Channel phytoplanktonic production seems to be relatively low, even though nutrient inputs determine the intensity of blooms in the Bay of Seine. The geographical position of the river Seine's estuary makes it important in fluxes through the Straits of Dover. Finally, the multi-annual study highlights the general stability of the English Channel ecosystem. These global considerations are discussed and further improvements to the model are proposed. PY 1997 PD JAN SO Marine Ecology Progress Series SN 0171-8630 PU Inter-research VL 146 IS 1-3 UT A1997WL39000019 BP 189 EP 205 DI 10.3354/meps146189 ID 44791 ER EF