MARINE ECOSYSTEM LOW TO MID TROPHIC LEVELS
PI and organization: P. Lehodey (CLS)
Co-Is: I. Senina, O. Titaud, P. Gaspar, B. Calmettes, M. Lalire (all CLS)
Abstract: In previous CMEMS project GREENUP, micronekton functional groups modeled from ocean colour, currents and temperature have been shown useful promising products for marine resources and ocean ecosystem management. The mesozooplankton that has critical importance for nutrient cycles and fish recruitment mechanisms has been added. Here, several enhancements in the modeling and production of these Lower and Mid-Trophic Levels (LMTL) functional groups are proposed. An extension of the model domain towards higher latitudes (> 65°) and shelf seas will increase the coverage of key European maritime regions. This task requires continuous testing of existing and new forcing variables with regional modeling approach and higher resolutions. Model calibration and validation will benefit of additional datasets and improvement to assimilate bio-acoustic data converted into biomass, following a definition of eco-regions with homogeneous characteristics. Finally, a demonstration of pre-operational products is proposed for LMTL products and one application based on them and CMEMS physical variables. It will provide indicator maps of risk of by-catch to assist in the conservation of one endangered marine turtle species. Reference simulations will be diffused to a diversity of users. Their feedback and sensitivity of LMTL to physical and biogeochemical CMEMS forcing fields will be analysed for future upgrades.
