Invasive/introduced species database

Assigning a numerical rank to an introduced species is an objective, quantifiable way to describe their relative impacts, and ranks are a valuable prioritization tool for land managers. We applied the Invasiveness Ranking System previously developed by the Alaska Natural Heritage Program to evaluate introduced species known to occur on Aleutian and Bering Sea Islands. This system uses sixteen criteria grouped into four categories to assess invasiveness: distribution, biological characteristics and dispersal ability, ecological impacts, and feasibility of control. Answers to individual questions are assigned a point value and the points are used to calculate subranks for each of the four sections. Each section is weighted to reflect its overall contribution to a species’ invasiveness. Distribution, biological, and ecological sections are each worth 30 points, and feasibility of control is worth 10. Where questions cannot be answered with available literature and expert review, weights are adjusted to compensate for unknowns.

Data and Resources

Field Value
accessLevel public
bureauCode {010:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20211110222844
identifier 6e7f7bbd-fc3d-4303-a09b-2a965daf69cd
metadata_type geospatial
modified 2019-09-09T04:28:38-08:00
publisher LCC Network
resource-type Dataset
source_datajson_identifier true
source_hash 2a91b89c1ebc054077d411d562a52bb1a35cc4c2
source_schema_version 1.1
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • academics-scientific-researchers
  • amerigeo
  • amerigeoss
  • aquatic-ecosystems
  • biota
  • ckan
  • environment
  • federal-resource-managers
  • geo
  • geoss
  • interested-public
  • invasive-species
  • national
  • north-america
  • policy-makers-regulators
  • state-agencies
  • terrestrial-ecosystems
  • tribes
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer (Point of Contact); Aleutian Bering Sea Islands LCC (Point of Contact, Publisher)
maintainer_email lccdatasteward@fws.gov
metadata_created 2025-11-20T23:17:13.302829
metadata_modified 2025-11-20T23:17:13.302833
notes Assigning a numerical rank to an introduced species is an objective, quantifiable way to describe their relative impacts, and ranks are a valuable prioritization tool for land managers. We applied the Invasiveness Ranking System previously developed by the Alaska Natural Heritage Program to evaluate introduced species known to occur on Aleutian and Bering Sea Islands. This system uses sixteen criteria grouped into four categories to assess invasiveness: distribution, biological characteristics and dispersal ability, ecological impacts, and feasibility of control. Answers to individual questions are assigned a point value and the points are used to calculate subranks for each of the four sections. Each section is weighted to reflect its overall contribution to a species’ invasiveness. Distribution, biological, and ecological sections are each worth 30 points, and feasibility of control is worth 10. Where questions cannot be answered with available literature and expert review, weights are adjusted to compensate for unknowns.
num_resources 5
num_tags 19
title Invasive/introduced species database