Tools for the Analysis of Ecosystem Metabolism R package LakeMetabolizer version 1.5.6 A collection of tools for the calculation of freewater metabolism from in situ time series of dissolved oxygen, water temperature, and, optionally, additional environmental variables. LakeMetabolizer implements 5 different metabolism models with diverse statistical underpinnings: bookkeeping, ordinary least squares, maximum likelihood, Kalman filter, and Bayesian. Each of these 5 metabolism models can be combined with 1 of 7 models for computing the coefficient of gas exchange across the air–water interface (k). LakeMetabolizer also features a variety of supporting functions that compute conversions and implement calculations commonly applied to raw data prior to estimating metabolism (e.g., oxygen saturation and optical conversion models). Software Depends: R (>= 2.15.0), rLakeAnalyzer (>= 1.4) Imports: plyr, methods Suggests: R2jags, testthat Jacob Zwart <jayzlimno@gmail.com> Comprehensive R Archive Network (CRAN) Luke Winslow [aut], Jacob Zwart [cre, aut] (ORCID: <https://orcid.org/0000-0002-3870-405X>), Ryan Batt [aut], Jessica Corman [aut], Hilary Dugan [aut], Paul Hanson [aut], Aline Jaimes [aut], Jordan Read [aut], Richard Woolway [aut] GPL (>= 2) 2025-10-30 application/tgz https://CRAN.R-project.org/package=LakeMetabolizer doi:10.32614/CRAN.package.LakeMetabolizer