Science & Technology

Estimating Taxon-Environment Relationships: Survey Weighting

This page describes the use of probability weighted data for estimating species-environment relationships.

Computing Inferences: Categorical Tolerance Data

This page describes the use of categorical tolerance data for assessing site conditions.

Using R to Compute Weighted Average Inferences

Script for inferring environmental conditions using weighted average optima

Computing Inferences: Maximum Likelihood Inferences

This page describes the maximum likelihood approach for inferring environmental conditions.

Basic Analyses

Overview of using classification and regression trees (CART) includes assumptions in CART analysis, and insight on pruning regression trees, .

Using R for Significance Tests

Script for conducting significance tests for models using R.

Using R for Non-Parametric Regression

Script for computing nonparametric regression analysis. Overview of using scripts to infer environmental conditions from biological observations, statistically estimating species-environment relationships, statistical scripts.

Using R for Parametric Regression

Script for computing single variable parametric regressions for presence/absence of different taxa.

Estimating Taxon-Environment Relationships: Environmental Limits

This page describes cumulative distribution approach to estimating optima in terms of environmental limits.

Using R to Classify Curve Shapes

Script for categorizing curve shape of species-environment relationship.

Basic Principles & Issues

Methods for analyzing autocorrelated data

Loading Data into R

Scripts for loading data into R.

Using Taxon-Environment Relationships: Assign Operational Taxonomic Units

Step instructions for assigning operational taxonomic units.

Computing Inferences: Weighted Average Inferences

This page describes a weighted average approach for inferring environmental conditions.

Estimating Taxon-Environment Relationships: Parametric Regressions

This page describes the parametric regression approach to estimating species-environment relationship.

Using Taxon-Environment Relationships: Compute Biological Inferences

Step instructions for computing inferred environmental conditions.

SSD Plots

Species sensitivity distributions, cadmium, LC50, ECOTOX, arthropod

PECBO Appendix Introduction: Theory

Provides underlying theory for species-environment relationships

Data Analysis Topics (A-Z)

This is an a to z list of data analysis topics which are part of volume 4: data analysis

R Script: Non-Parametric Regression

How to Fit Non-Parametric Curves to Observations