Carbon Fluxes, Net Burial And Landings In The Celtic Sea (outputs Derived From StrathE2E Model)

This dataset includes carbon fluxes computed by postprocessing nitrogen outputs from StrathE2E model runs, by taking into account carbon-nitrogen stoichiometry dynamics in the food web. This dataset was compiled for deliverable 5.2 of the Ocean-ICU Horizon Europe project. StrathE2E model runs The StrathE2E model is an end-to-end ecosystem model, describing the entire food web within shelf regions, from inorganic nutrients to megafauna (Heath et al, 2021). It uses climate model outputs, and combined with a fishing fleet model, StrathE2E allows for the study of both climate and fishing effects on nutrient cycling and trophic interactions. Data were computed from running the following StrathE2E model variants and fishing scenarios: Region Period Climate input Climate scenario Fishing (yes/no) Notes Celtic Sea 2010-2019 CNRM SSP1-2.6 yes   Celtic Sea 2010-2019 CNRM SSP1-2.6 no   Celtic Sea 2040-2049 CNRM SSP1-2.6 yes   Celtic Sea 2040-2049 CNRM SSP1-2.6 no   Celtic Sea 2010-2019 CNRM SSP3-7.0 yes baseline model Celtic Sea 2010-2019 CNRM SSP3-7.0 no   Celtic Sea 2040-2049 CNRM SSP3-7.0 yes   Celtic Sea 2040-2049 CNRM SSP3-7.0 no   Celtic Sea 2010-2019 GFDL SSP1-2.6 yes   Celtic Sea 2010-2019 GFDL SSP1-2.6 no   Celtic Sea 2040-2049 GFDL SSP1-2.6 yes   Celtic Sea 2040-2049 GFDL SSP1-2.6 no   Celtic Sea 2010-2019 GFDL SSP3-7.0 yes baseline model Celtic Sea 2010-2019 GFDL SSP3-7.0 no   Celtic Sea 2040-2049 GFDL SSP3-7.0 yes   Celtic Sea 2040-2049 GFDL SSP3-7.0 no   Dataset description Overview For each model variant and fishing scenario tested, the following data (in .csv format) are available: Carbon budget data ("#_Cbudget-data.csv") Matrices of annual carbon and nitrogen fluxes for whole area (inshore and offshore zones combined) from last year model outputs ("#_C-fluxes.csv" and "#_N-fluxes.csv") Landings by guild (e.g. planktivorous fish, pelagic invertebrates, benthos, birds...) and by gear (e.g. beam trawls, dredges...) in carbon and nitrogen units ("#_C-land-by-gear.csv" and "#_N-land-by-gear.csv") In addition, the "CN-ratios_all-model-variants.csv" file compiles all resulting C:N ratios of each guild for each model run performed here. Carbon budget data This contains a summary of the following boundary and internal (production) fluxes which are of interest for the deliverable 5.2 of the Ocean-ICU project: Carbon sequestration (net sediment burial) Landings Discards Corpses (note that discards end up in this guild after a short life time (see flux matrices)) Faecal pellets CO2 absorption by food web guilds CO2 release by food web guilds Beach cast of macrophytes (kelp) Passive inflow of organic carbon (from phytoplankton and detritus) from open ocean Passive outflow of organic carbon (from phytoplankton and detritus) from open ocean Fish migration inflow Fish migration outflow For each variable, both the total annual flux and flux by guild are given. Matrices of annual carbon and nitrogen fluxes Each column represent the destination/consumer guild and each row the source/prey guild. Example: the value read in row "carnzoo" (carnivorous zooplankton) and column "pfish" (planktivorous fish) is the annual flux of consumption of carnivorous zooplankton by planktivorous fish. These matrices include boundary fluxes (e.g. open ocean, atmosphere...). Fluxes are given in mmol.m^(-2).y^(-1) of either carbon or nitrogen. Landings by guild and by gear Units: mmol.m^(-2).y^(-1) of carbon/nitrogen Fishing gears: artisanal beam trawls dredges driftings and handlines fly dragging and anchor seine gillnets and longlines kelp harvesting mid-water trawl nephrops trawls pots purse seine. Guilds harvested: Planktivorous fish Quota-limited demersal fish Non-quota demersal fish Migratory fish Suspension/deposit feeding benthos Carnivore/scavenge feeding benthos Pelagic invertebrates Birds Pinnipeds Cetaceans Macrophytes C:N ratios Table compiling C:N molar ratios by guild for each model variant. Note: These C:N ratios are the result of a nitrogen-to-carbon conversion which describes the transfer of carbon up the food web by using one parameter. This parameter was fitted to compiled observational C:N ratio data using outputs from the baseline model (so one parameter value for model variant with CNRM climate input and one for model with GFDL). Once fitted, this parameter value was kept constant for all other model runs. Funding acknowedgement This work was co-funded by the European Union under grant agreement no. 101083922 (OceanICU) and UK Research and Innovation (UKRI) under the UK government’s Horizon Europe funding guarantee [grant number 10054454, 10063673, 10064020, 10059241, 10079684, 10059012, 10048179]. The views, opinions and practices used to produce this dataset are however those of the author(s) only and do not necessarily reflect those of the European Union or European Research Executive Agency. Neither the European Union nor the granting authority can be held responsible for them.
Publisher name: Zenodo
Last updated: 2026-02-20T14:44:33Z