PyHC5 Species Sensitivity Distributions

EPA ECOTOX aquatic toxicity · model-averaged HC₅ with bootstrap CIs

Chemical (name or CAS)

Working…

Hazardous concentrations

Concentration in µg/L

Composition

Distribution fits & goodness of fit

Distributions are fit by maximum likelihood on the µg/L scale; the SSD curve and HC values are AICc-weighted model averages (Burnham & Anderson), matching ssdtools. Lower AICc and Anderson-Darling (AD) indicate better fit. CIs are non-parametric bootstrap (species resampled with replacement).

Data preview

Most sensitive species

Search chemical (name or CAS)

SSD-ready only

Page size

Chemical (name or CAS)

Species contains

Taxonomic group

Habitat

Endpoint

Effect

Media

Conc µg/L (min / max)

Duration h (min / max)

numeric concentration only

Page size