65 



maintaiiied in their current conditic»i. 



b. Notification of U.S. Forest Service personnel of 

 locations of populations on U.S.F.S. lands. To prevent 

 inadvertent iitpacts to kncwn populations, eill 

 appropriate Flathead Natiovil Forest personnel should 

 be provided with detailed location information. It is 

 e^3eci£Llly inportant that Ranger District t inter sale 

 managers, engineers, and other plcinners knew the 

 precise locaticxis, so that disturbance may be 

 prevented. 



c. pvaluation of projects vtiich may affect the hvdrolocrv 

 of habitats supporting populations. Because the ponds 

 supporting B. aouatilis populations depend largely on 

 run-off for water supply, iirpacts which may influence 

 this source should be ccurefully studied. Also, 

 projects which could result in permanent inundaticai or 

 drying of the ponds should be mitigated. The hydrology 

 of the Swan Vedley is highly corplex, and H. aquatilis 

 is dependent \jpon intact drainage patterns. 



In Washington, the Natural Heritage Program should notify 

 all landowners of the presence of the species on their land. 

 It is also reocninended that the Tumbull National Wildlife 

 Refuge develop a ^secies nanagement plan. 



The population in Idaho is currently being protected by the 

 landowner. 



2. Areas reocmnended for protoction: In Montana, eureas with 

 populations in numerous adjacent ponds in veurying stages of 

 succession would be best suited for protection or ^jecial 

 managenient. Because t). aquatilis is found in aquatic 

 habitats which appeau: to be in an earlier suocessional 

 stage, an assemblage of such ponds would possibly allcw for 

 longer-term persistence of the spaecies; as the habitats 

 ch£u>ge, the ^aecies could be established (naturally or 

 surtificially) in nearby sites which are still ecologically 

 suitable (Lesica gt Sl* 1988). Such habitat clusters are 

 found in the Oondon Creek, Lindbergh lake. Lost Creek-Cilly 

 Creek, and Swan River Oxbow eupeas in the Swan Valley (see 

 maps, pp. 138-147). The first three eu^as have been 

 iijpacted by tiirber heurvesting, and future management plans 

 and reooninendations should take these iitpacts into account. 



In Washington, the Natural Heritage Program should identify 

 and reoonnend eupeas for protection. In Idaho, the National 

 Audubtxi Society should be notified of the occurrence on the 

 CMrtey property so that management strategies can be 

 developed accordingly. 



3. Managanent and recovery reocninendations: Oving to the 

 narrcM ecological restriction of H- aquatilis . the most 



