E. Population biology and biological interactions 



1. Population biology and biological interactions: This 

 species was not relocated during reconnaissance survey in the 

 Teepee Canyon area in the NE 1/4 of Sec. 31. It is presumed 

 to be extant because the original survey is recent (1986) . 

 The spring vicinity is heavily infested with Cirsium arvense 

 and Phalaris arundinaceae . That infestation is spotty 

 upstream. Excavation work to maintain or enhance the spring 

 for livestock use had taken place within the past few years. 

 Recent flash flood conditions within the previous two weeks 

 had plastered the vigorous emergent vegetation in the 

 watercourse, but did not breach the highwater mark above which 

 Mertensia ciliata is presumed to be located. 



2. Reproduction: Unknown 



3. Competition: Unknown 



4. Herbivory: Unknown 



F. Assessment and management recommendations: The highly- 

 restricted distribution of this species and potential vulnerability 

 to surrounding land use provide the basis for recommending that 

 this species be considered sensitive in the District. 



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