Global gridded fishing exploitation patterns (F/FMSY) of demersal and pelagic fish

Global gridded fishing mortality (F) relative to the fishing mortality that supports maximum sustainable yield (FMSY) for three fish functional types: forage fish, large pelagic fish, and demersal fish. Years 1861-2004 0.5-degree spatial resolution Outputs can be used to simulate historical fishing patterns of pelagic and demersal fish in ecosystem models. The F/FMSY needs to be multiplied with FMSY of each fish type in the model to obtain F. FMSY depends on fish theoretical model specification and assumptions. The F/FMSY timeseries are estimated using reconstructed catch data and a data limited catch assessment model for all LME × functional type combinations with intermediate and high catches. For all remaining combinations and the high seas, F/FMSY timeseries are estimated by converting nominal effort timeseries per functional type to an F/FMSY using conversion factors. The estimated F/FMSY timeseries are allocated per functional type, ecosystem, and year across a 0.5-degree spatial grid in proportion to total gridded effort in each ecosystem. Reference to the analysis: To be added, in review Additional data sources: Reconstructed fisheries catches: Watson, R. A database of global marine commercial, small-scale, illegal and unreported fisheries catch 1950–2014. Sci Data 4, 170039 (2017). https://doi.org/10.1038/sdata.2017.39 Global gridded fishing effort data reconstruction: Rousseau, Y., Blanchard, J. L., Novaglio, C., Pinnell, K., Tittensor, D. P., Watson, R. A., & Ye, Y. (2022). Global Fishing Effort [Data]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS).