Science & Technology

Threats to Coral Reefs

Coral reefs are among the most biologically diverse and valuable ecosystems on Earth. This web site describes the importance of coral reefs, threats to them, and ongoing efforts to protect them.

John Deere Waterloo Works - Drivetrain Operations Facility, Waterloo, Iowa - Fact Sheet, July 2017

Public Comment for RCRA Hazardous Waste Management Permit Renewal

Omaha Public Schools’ Accelere Program - Students, Mentors and Community Partners

Students working on Hydroponics Laboratory in 2016, Mentors, Community partners

John Deere Waterloo Works - Drivetrain Operations Facility, Waterloo, Black Hawk County, Iowa - Fact Sheet, May 2019

Public Comment Period for Proposed Final Remedy and Permit Modification

Estimating Taxon-Environment Relationships: Data Requirements

Overview of PECBO Module, using scripts to infer environmental conditions from biological observations, statistically estimating species-environment relationships, methods for inferring environmental conditions, statistical scripts in module.

R Script: Parametric Regression

How to Fit Parametric Regression Models to Observations.

Basic Analyses

Overview of quantile regression analysis includes insight on simplifying assumptions.

Using R to Estimate Taxon-Environment Relationships

This page describes steps for estimating species-environment relationships using on-line library.

PECBO Appendix Introduction: Definitions

Provides definitions used through the module

Estimating Taxon-Environment Relationships: Measurement Error

This page describes effects of measurement error on regression models for species-environment relationship.

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.