Covers general risk assessments, ranking systems, and other decision-making tools. See other sections for species specific information:

• Aquatic Species
• Plants
• Animals
• Microbes

General

Conservation by Design Gateway
The Nature Conservancy.
A "one-stop" online, public library, created and maintained by The Nature Conservancy in partnership with other conservation organizations. The library makes conservation tools, techniques, and experience available to a broad community of conservation practitioners. This site is intended to foster learning and collaboration, and provide information and support to anyone making conservation-related decisions, from the staff of conservation organizations to land managers at government agencies to local land trusts to private landowners.

Invasive Species: General Decision Process for Managing Invasive Plant Species in Garry Oak (British Columbia, Canada) and Associated Ecosystems
Garry Oak Ecosystems Recovery Team.

Halting the Invasion: State Tools for Invasive Species Management (Aug 2002)
Environmental Law Institute.
Note: Fee for full report, free download of Table of Contents and Introduction.

Invasive Alien Species - A Toolkit of Best Prevention and Management Practices (Sep 2001)
CAB International.
On behalf of the Global Invasive Species Programme

Invasive Species System
University of Florida. IFAS. International Agricultural Trade & Policy Center.
This project is aimed at designing a practical tool for invasive species management. A decision-making framework is being developed that will be capable of informing policy makers over a wide range of policy issues.

Modeling software for climate change and invasive species -- CLIMEX
Hearne Scientific Software.
CLIMEX enables you to assess the risk of a pest establishing in a new location and the potential success or failure of a biological control agent with no knowledge of the species, except for knowing the current locations they do occur.

Pest Risk Analysis
European and Mediterranean Plant Protection Organization.
Risk Analysis for the EPPO region (48 European and Mediterraneancountries) which deals with agricultural, economic or environmental impacts. It can be used for every organisms and can be both species or pathway initiated. It is the regional tool adapted from ISPM 11 which is already used by countries.

Pest Risk Assessments - National CAPS Commitee Fiscal Year 2007 Target Pests
USDA. Animal and Plant Health Inspection Service.

Plant Health Environmental Assessments
USDA. APHIS. Plant Protection and Quarantine.
Provides plant protection and quarantine environmental documents for various species.

Risk Assessment of Invasive Species
Western Washington University. Institute of Environmental Toxicology.

• Risk Evaluation of Invasive Species Transport
  Across the U.S. – Canada Border in Washington State: Final Report (May 31, 2007; PDF | 1.38 MB)
• Development of a conceptual model for non-indigenous species for the Mid-Atlantic States (Sep 30, 2005; PDF | 3.48 MB)

Standard Methodology to Assess the Risks from Non-native Species Considered Possible Problems to the Environment
United Kingdom Department for Environment Food and Rural Affairs. Wildlife and Countryside.
In response to a key recommendation from the Defra Review of Non-Native Species Policy, Defra funded a one-year project starting in January 2004 to develop a scheme for assessing the risks posed by any non-native organism to species, habitats or ecosystems in all or part of the UK.

Eastern Forest Environmental Threat Assessment Center (EFETAC)
USDA. Forest Service.
The mission of the Eastern Forest Environmental Threat Assessment Center is to generate, integrate, and apply knowledge to predict, detect, and assess environmental threats to public and private forests of the east, and to deliver this knowledge to managers in ways that are timely, useful, and user friendly.