Missoula Phlox (Phlox kelseyi var. missoulensis) Conservation Status Review
Review Date = 03/29/2013
Score1 - Moderate: Generally 10,000-100,000 individuals.
Score2 - Regional or State Endemic or Small Montana Range: Generally restricted to an area <100,000 sq. miles (equivalent to 2/3 the size of Montana or less) or Montana contributes 50% or more of the species’ range or populations OR limited to 2-3 Sub-basins in Montana.
Area of Occupancy
Score1 - Moderate: Generally occurring in 11-25 Subwatersheds (6th Code HUC’s).
Score1 - Minor Declines: Species has experienced declines of 10-30% in population size, range extent and/or occupied area in the recent past (approximately 30 years).
CommentTrends are undocumented at most sites. The species is likely stable at most locations with some declines at a couple of the low elevation sites.
Score2 - High: 31-70% of the populations are being negatively impacted or are likely to be impacted by one or more activities or agents, which are expected to result in decreased populations and/or habitat quality and/or quantity.
CommentInvasive species are a primary threat to the low elevation populations. Trampling has been a threat to one population, though the trail has been re-routed around the population greatly reducing the likelihood of this iimpact occurring.
Score0 - Low Vulnerability: Species does not have any unusual or specific life history or biological attributes or limted reproductive potential which makes it susceptible to extirpation from stochastic events or other adverse impacts to its habitat and thus slow to recover.
Score1 - Moderate: Species is restricted to a specific habitat that is more widely distributed or to several restricted habitats and is typically dependent upon relatively unaltered, good-quality habitat (C Values of 5-7).
Raw Conservation Status Score
8 total points scored out of a possible 19.