Globally-Applicable Area Disaggregated General Ecosystem Toolbox V3 R package gadget3 version 0.15-1 A framework to assist creation of marine ecosystem models, generating either 'R' or 'C++' code which can then be optimised using the 'TMB' package and standard 'R' tools. Principally designed to reproduce gadget2 models in 'TMB', but can be extended beyond gadget2's capabilities. Kasper Kristensen, Anders Nielsen, Casper W. Berg, Hans Skaug, Bradley M. Bell (2016) <doi:10.18637/jss.v070.i05> "TMB: Automatic Differentiation and Laplace Approximation.". Begley, J., & Howell, D. (2004) <https://files01.core.ac.uk/download/pdf/225936648.pdf> "An overview of Gadget, the globally applicable area-disaggregated general ecosystem toolbox. ICES.". Software Depends: R (>= 4.2.0) Imports: digest, rlang (>= 0.4.5), stats, TMB (>= 1.7.0), utils, Suggests: dplyr, knitr, magrittr (>= 1.5), rmarkdown, unittest (>= 1.4) Jamie Lentin <lentinj@shuttlethread.com> Comprehensive R Archive Network (CRAN) Jamie Lentin [aut, cre] (ORCID: <https://orcid.org/0000-0001-5727-2996>), Bjarki Thor Elvarsson [aut] (ORCID: <https://orcid.org/0000-0001-5855-1188>), William Butler [aut] (ORCID: <https://orcid.org/0000-0002-3286-0748>), Marine and Freshwater Research Institute (Iceland) [cph] GPL-2 2026-01-12 application/tgz https://CRAN.R-project.org/package=gadget3 doi:10.32614/CRAN.package.gadget3