Tuna biomass (skipjack and bigeye tuna) variability over the period 1998-2019 simulated by the Spatial Ecosystem and Population Dynamics Model (SEAPODYM).
Here, we provide the unfished biomass dynamics (i.e. without considering any fishing). For each of the four tuna species we provide both the total biomass (adults + juveniles) and the larvae abundance.
This model is described in :
Senina, I., Lehodey, P., Sibert, J. and J. Hampton. Integrating tagging and fisheries data into a spatial population dynamics model to improve its predictive skills. Can. J. Aquat. Fish. Sci. 77, 576–593 (2020), doi: 10.1139/cjfas-2018-0470
The downscaling is described in :
Hampton J, Lehodey P, Senina I, Nicol S, Scutt Phillips J and Tiamere K. Limited conservation efficacy of large-scale marine protected areas for Pacific skipjack and bigeye tunas. Front. Mar. Sci. 9:1060943. doi: 10.3389/fmars.2022.1060943
Details on SEAPODYM can be found in the user reference manual.
