@article{fdi:010088912, title = {{U}nderstanding seasonal variability of mesozooplankton biomass in the upwelling system of central-southern {C}hile : a modelling approach}, author = {{V}enegas, {A}. and {A}uger, {P}ierre-{A}ma{\¨e}l and {E}scribano, {R}. and {P}arada, {C}.}, editor = {}, language = {{ENG}}, abstract = {{U}nderstanding the mechanisms that influence variability in zooplankton biomass in eastern boundary upwelling systems ({EBUS}) is a critical step in estimating secondary production in the ocean, particularly in the context of biogeochemical modelling and assessing ecosystem productivity. {I}n this study, we utilised a physicalbiogeochemical hindcast simulation (2002-2008) to investigate the sources of seasonal and interannual variability of mesozooplankton biomass within the upwelling zone of central-southern {C}hile. {M}onthly observations were obtained from an oceanographic time series conducted at {S}tation 18 (36 degrees 30 ' {S}) off the coast of {C}oncepci ' on, {C}hile. {T}he first step was to assess the coherence between model outputs and field observations of physical and biogeochemical variables, including the biomass of mesozooplankton. {T}he factors accounting for the variation in biomass at {S}tation 18 were then assessed. {I}n the model, advective flows along the shore and across the shelf control the majority of biomass. {T}he advection effect appears to be more pronounced during the upwelling season (austral spring-summer) than in winter, although it still significantly contributes to biomass variation during the latter. {O}ur physical-biogeochemical model {ROMS}-{PISCES} applied on this {EBUS} showed that alongshore and cross-shelf advection play a crucial role in driving spatial and temporal variability in zooplankton biomass within the upwelling zone. {T}herefore, it is essential to consider these physical processes when interpreting observational data from fixed time series stations.}, keywords = {{Z}ooplankton biomass ; {M}odelling ; {A}dvection ; {U}pwelling ; {C}hile ; {CHILI} ; {PACIFIQUE}}, booktitle = {}, journal = {{P}rogress in {O}ceanography}, volume = {220}, numero = {}, pages = {103193 [15 p.]}, ISSN = {0079-6611}, year = {2024}, DOI = {10.1016/j.pocean.2023.103193}, URL = {https://www.documentation.ird.fr/hor/fdi:010088912}, }