3D Prioritization Algorithm R package prior3D version 0.1.5 Three-dimensional systematic conservation planning, conducting nested prioritization analyses across multiple depth levels and ensuring efficient resource allocation throughout the water column. It provides a structured workflow designed to address biodiversity conservation and management challenges in the 3 dimensions, while facilitating users’ choices and parameterization (Doxa et al. 2025 <doi:10.1016/j.ecolmodel.2024.110919>). Software Depends: R (>= 4.1.0) Imports: prioritizr (>= 8.0.4), terra, maps (>= 3.4.2), highs, viridis (>= 0.6.5), readxl (>= 1.4.3), rasterdiv (>= 0.3.4), geodiv (>= 1.1.0), methods, stats, utils, graphics, grDevices Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Christos Adam <econp266@econ.soc.uoc.gr> Comprehensive R Archive Network (CRAN) Aggeliki Doxa [aut] (ORCID: <https://orcid.org/0000-0003-4279-1499>), Christos Adam [aut, cre] (ORCID: <https://orcid.org/0009-0003-3244-7034>), Nikolaos Nagkoulis [aut] (ORCID: <https://orcid.org/0000-0002-1900-2634>), Antonios D. Mazaris [aut] (ORCID: <https://orcid.org/0000-0002-4961-5490>), Stelios Katsanevakis [aut] (ORCID: <https://orcid.org/0000-0002-5137-7540>) GPL-3 2025-01-25 application/tgz https://CRAN.R-project.org/package=prior3D doi:10.32614/CRAN.package.prior3D