Package: trps 0.1.1

trps: Bayesian Trophic Position Models using 'Stan'

Bayesian trophic position models using 'stan' by leveraging 'brms' for stable isotope data. Trophic position models are derived by using equations from Post (2002) <doi:10.1890/0012-9658(2002)083[0703:USITET]2.0.CO;2>, Vander Zanden and Vadeboncoeur (2002) <doi:10.1890/0012-9658(2002)083[2152:FAIOBA]2.0.CO;2>, and Heuvel et al. (2024) <doi:10.1139/cjfas-2024-0028>.

Authors:Benjamin L. Hlina [aut, cre]

# Install 'trps' in R:

install.packages('trps', repos = c('https://benjaminhlina.r-universe.dev', 'https://cloud.r-project.org'))

Datasets:

baseline_1_iso - Stable isotope data for amphipods
baseline_2_iso - Stable isotope data for dreissenids
combined_iso - Stable isotope data for lake trout, amphipods (benthic baseline; baseline 1) and dreissenids (pelagic baseline; baseline 2),
consumer_iso - Stable isotope data for lake trout

On CRAN:

Last updated from:e249ff862f. Checks:9 OK. Indexed: yes.

Target	Result	Time
linux-devel-x86_64	OK	209
source / vignettes	OK	276
linux-release-x86_64	OK	209
macos-release-arm64	OK	125
macos-oldrel-arm64	OK	112
windows-devel	OK	143
windows-release	OK	141
windows-oldrel	OK	156
wasm-release	OK	152

Benjamin L. Hlina

Last update: 2025-04-05
Started: 2025-03-15

Help page	Topics
Calculate and add alpha	add_alpha
Stable isotope data for amphipods (baseline 1)	baseline_1_iso
Stable isotope data for dreissenids (baseline 2)	baseline_2_iso
Stable isotope data for lake trout, amphipods (benthic baseline; baseline 1) and dreissenids (pelagic baseline; baseline 2),	combined_iso
Stable isotope data for lake trout (consumer)	consumer_iso
Bayesian model - One Source Trophic Position	one_source_model
Bayesian priors - One Source Trophic Position	one_source_priors
Adjust Bayesian priors - One Source Trophic Position	one_source_priors_params
Bayesian model - Two Source Trophic Position	two_source_model
Bayesian model - Two Source Trophic Position with alpha_r	two_source_model_ar
Bayesian model - Two Source Trophic Position with alpha_r and carbon mixing model	two_source_model_arc
Bayesian priors - Two Source Trophic Position	two_source_priors
Bayesian priors - Two Source Trophic Position with alpha_r	two_source_priors_ar
Bayesian priors - Two Source Trophic Position with alpha_r and carbon mixing model	two_source_priors_arc
Adjust Bayesian priors - Two Source Trophic Position	two_source_priors_params
Adjust Bayesian priors - Two Source Trophic Position with alpha_r	two_source_priors_params_ar
Adjust Bayesian priors - Two Source Trophic Position with alpha_r and carbon mixing model	two_source_priors_params_arc