№ files_lp_4_process_3_104978
Methodological supporting appendix presenting mathematical formulations, R functions, Bayesian model structures, and simulation results used to estimate no-effect toxicity concentrations and ECx metrics in ecotoxicological concentration–response analyses.
Field: Ecotoxicology
Document type: Supporting information file
Content type: Methodological appendix with model formulations and simulation data
Subject: Estimation of no-effect toxicity concentrations (NEC) and ECx metrics
Models described: NEC3param, NEC4param, ECxLinear, ECxExp, ECxSigmoidal, ECx4param, ECxWeibull1, ECxWeibull2
Software / framework: jagsNEC (Bayesian modelling approach)
Key parameters: τ (upper plateau / intercept), η (NEC), β (decay rate), δ (lower plateau), ω (EC50)
Methods included: Threshold models, sigmoidal decay models, Weibull models
Data type: Simulated toxicity and concentration–response data
Simulation design: Multiple sampling schemes with varying treatment levels, replicates, and binomial trials
Measured variable: Concentration–response relationships for toxicity effects
Chemical context: Weathered Ichthys condensate WAF expressed as Total Aromatic Hydrocarbons (µg/L TAH)
Biological context: Tropical marine species responses including A. millepora, S. variolaris, N. dorsatus, and A. amphitrite
Statistical approach: Bayesian model fitting with MCMC and DIC-based model weighting
Included materials: R functions for simulation data generation, model equations, simulation study tables, and figure of fitted concentration–response curves
Tables: Model weight comparison (Table S1); toxicity estimates and effects across simulation designs (Table S2)
Figure: Concentration–response relationships with Bayesian NEC-sigmoidal model fits (Figure S1)
Price: 8 / 10 USD
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