A Risk Assessment System for Screening out Invasive Pest Plants from Hawai'i and Other Pacific Islands
University of Hawai'i - Manoa.
Alien Plants Ranking System Version 5.1
DOI. Northern Prairie Wildlife Research Center.
Developed in partnership with the National Park Service, Ripon College, University of Minnesota, and the U.S. Geological Survey. Designed primarily for grassland and prairie parks in the central United States, the tool helps managers to target management efforts on the most problematic species. The tool can assess potential threats and feasibility of control.
Environmental Assessments and Documents and Weed Risk Assessment
USDA. APHIS. Plant Protection and Quarantine.
Guidelines for Coordinated Management of Noxious Weeds: Development of Weed Management Areas
Montana State University. Center for Invasive Plant Management.
Cooperative effort between Bureau of Land Management, Forest Service, National Park Service, Montana Department of Agriculture, Idaho Department of Agriculture, Park County, Wyoming Weed & Pest Countrol District and Ag West Communications
Handbook for Ranking Exotic Plants for Management & Control (July 1993; PDF | 179 KB)
DOI. National Park Service.
The National Park Service has developed this ranking system to provide resource managers with a tool to sort exotic plants within a park according to the species level of impact and its innate ability to become a pest. This information can then be weighed against the perceived feasibility or ease of control. The Exotic Species Ranking System is designed to first separate the innocuous species from the disruptive species. The separation allows researchers to then concentrate further efforts on species in the disruptive category. The system is also designed to identify those species that are not presently a serious threat but have the potential to become a threat and, thus, should be monitored closely. Finally, the system asks the park manager and the ecologist to consider the cost of delaying any action. This handbook describes the rationale of the ranking system and its components and how to adapt the system to different situations and different areas of the country.
IFAS Assessment of the Status of Non-native Plants in Florida's Natural Areas
University of
Florida. Institute of Food and Agricultural Sciences.
Invasive Exotic Plant Management Tutorial for Natural Lands Managers
Pennsylvania Department of Conservation and Natural Resources.
Prepared by: Mid-Atlantic Exotic Pest Plant Council, Inc.
A "one-stop-shop" for natural resource managers who are interested in organizing on-the-ground efforts to prevent, manage and control invasive exotic plants.
Invasive Species (I-Rank) Assessments
NatureServe Explorer.
Includes assessments for a total 452 non-native plants of the U.S., searchable by name, location, invasive impact rank (I-Rank), or a combination of these criteria. The assessments are the result of applying a systematic protocol (Morse et al. 2004) to determine the degree of impact an individual non-native species has on the native plants, animals, and ecosystems of the United States.
Note: The invasive species ranks (I-Ranks) are on the Status tab. Use the link at the top of the Status tab that says "U.S. Invasive Species Impact Rank (I-RANK)" or just scroll down the page until you see the I-Rank select criteria. You can search for individual species by name, by location or search by the overall invasive impact rank.
International Weed Risk Assessment Workshop
Hawaiian Ecosystems at Risk (HEAR) Project.
Disseminates information generated from workshop sessions; includes proceedings, papers, and other information resources.
Plant Species That Threaten Ecosystems of the Pacific Islands (PIER)
Pacific Island Ecosystems at Risk.
The U.S. Forest Service is pleased to announce the release of version 5.1 of the Pacific Island Ecosystems at Risk (PIER) web site and CD (Nov 2006). Over 5000 herbarium records from the Bishop Museum have been added to the location data. PIER now contains profiles of 1270 plant species, over 3000 photos and images, and over 600 risk assessments to aid in identifying and evaluating invasive plant species of concern to the Pacific region.
Plant Stewardship Index (PSI)
Bowman's Hill Wildflower Preserve (Pennsylvania).
The Plant Stewardship Index (PSI) is an analytical tool for land conservationists, land managers and property owners. The Index is designed to assist in answering two questions: What is the
naturalness of any site? How have land management practices (or their absence)
affected that naturalness over time?
Ranking Invasive Exotic Plant Species in Virginia (Jun 2001; PDF | 2.5 MB)
Virginia Department of Conservation and Recreation. Natural Hertiage.
Natural Heritage Technical Report 01-13
Review of the National (Australia) Weed Risk Assessment System (Nov 30, 2005; PDF | 553 KB)
Weeds Australia.
Conducted by the NWRAS Review Group - A Joint Natural Resource Management Standing
Committee-Primary Industries Standing Committee Subcommittee (Approved Aug 2, 2006)
Risk Assessment for Invasive Plant Species
Weed Science Society of America.
Weed Technology: Vol. 18, No. 5, pp. 1305-1308.
Weed Control Methods Handbook: Tools and Techniques for Use in Natural Areas (Apr 4, 2001)
Nature Conservancy. Global Invasive Species Initiative.
By Mandy Tu, Callie Hurd, & John M. Randall
Weed Control Template from the Wildland Invasive Species Team
Nature Conservancy. Global Invasive Species Initiative.
This tool includes an introduction, template, and spreadsheets, and a sample plan to assist managers in the development of a weed plan to prioritize and control weed growth and spread.
Weed Information Management System (WIMS)
Nature Conservancy. Global Invasive Species Initiative.
Weed Information Management System (WIMS) is a Microsoft Access-based relational database application that is designed to assist natural resource managers in managing their weed data.
Weed Risk Assessments for Hawaii and Pacific Islands
University of Hawai'i - Manoa.
Botany Department.
White River National Forest
Invasive Plant Specie Management
Environmental Assessment - DRAFT (Jun 7, 2007)
USDA. FS. White River National Forest.
The U.S. Forest Service has released a proposal that would allow the agency to respond more rapidly and flexibly to the problem, through means including use of herbicides and biological controls such as insects. Under 1993 rules that the Forest Service now follows on the WRNF, it isn't allowed to use biological controls in wilderness areas. Such controls are seen as being sometimes more effective than herbicides in managing infestations that exceed 100 acres.
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