The Alaska Species Ranking System (ASRS) is a tool that ranks vertebrate taxa ( mammals, birds, amphibians) according to their conservation concern in Alaska. Conservation concern is evaluated using 13 questions, which are split into three general categories:
- Status (2 questions, 20 points): Measures the trend (e.g. increasing, decreasing, stable) in a taxon’s population status and distribution. Higher status scores acknowledge that taxa with known declining trends are of concern regardless of current population or range size.
- Biological Vulnerability (7 questions, 50 points): Measures aspects of a taxon’s distribution, abundance and life history within the taxon’s geographic range in Alaska. Higher biological scores suggest greater vulnerability to extirpation, for example, because of small population size, low reproductive output, or specialized habitat requirements.
- Action (4 questions, 40 points): Qualifies the current state of knowledge and extent of conservation efforts directed toward a given taxon within Alaska. Higher scores denote greater information needs or conservation action
The ASRS was developed in partnership with the ADF&G TED Program and is based on Florida’s Species Ranking System
Looking for more?
Additional range maps for species not listed here can be viewed on the Wildlife Data Portal. References cited in the Conservation Reports can be viewed on our online reference library. Questions? Comments? Can’t find the report you’re looking for? Reach out to us and we’ll do our best to help!