Laserfiche WebLink
<br /> <br />,.," ') <br />f It)JlJ <br /> <br />\0 SUpport and encourage the acllvilles of entities Qulsl(!e the Recovery Program that <br />are working to identify problem sites. evaluate contaminant impacts, and reduce or <br />ehmlnatelhOS61mpacls <br /> <br />2.3 ilL REOUCE NEGATIVE IMPACTS OF NONNATIVE FISHES AND SPORTFISH <br />MANAGEMENT ACTIVITIES. <br /> <br />Fifty-two fish speCies occur In the Upper Basin. but only 13 of those are nalive species. <br />Many of the nonnallvefishes have been successlul due to changes m lheriversystem <br />thatlavor their sUl"1/ival over that 01 nalive fishes Competition with and predation by <br />nonnalive species (not including salmon Ids) is widely assumed 10 have played a rolem <br />the decline of the endangered fishes (Tyus and Saunders 1996), However, evidence of <br />direct impacts 01 Introduced species on natl~eJ!shes is. dl!!)culllO obtain (Schoenherr <br />1981) and otten is masked by rmI~ hu'man:cauSed habitat alterallOns (Moyle <br />1976) <br /> <br />Recovery Program actiVities related to nonnative fishes initially focused on identifYing <br />Impactslinteractlons and developing nonnative fish stocking procedures A nonnative <br />fish control strategy has been developed to,I9~,ntlfv aryd, Dri.f!!Ltlle2P~lo~!!. IQr",c,<;t.nlrglllri9., <br />or removino nonna!lve fishes from t"'e river reaches occuDied bv the endangered fishes <br />...., .", ~ "-~" ". "'. ,_..",. .. <br />as well as other reaches that serve as Droduction areas JOf j10nnatives that <br />subsequenlly disperse, into Occupied habitat. Through 2003, emphasis Will be focused <br />on tho control activities identified in the strategy <br /> <br />The Slates and the Service also have developed final procedures for stocking of <br />nonnative fishes in the Upper Basin The procedures are designed to reduce the <br />impact on native fishes due to stoding of nonnative fishes In the Upper Basin and <br />clarify the role of the States, the Service. and others In the review of stocking proposals <br />A memorandum of understanding has been Signed by the States and the Service <br />Implemenlingthe Stockrng Procedures. <br /> <br />2.4 IV CONSERVE GENETIC INTEGRITY AND AUGMENT OR RESTOR!;. <br />POPULATIONS <br /> <br />Species recovery depends on protecting and managing species genellc resources. ThiS <br />is a complex aCllvJly that Includes: delermlnrng the genetic stoc ks of the endangered <br />fishes: protecting those stocks In refugia; planning. developing, and operallng <br />propagation faClhhes: propagating genetic stods for research, information and <br />educaliOn.and augmentation or reSloration; and plannlng,impleme nting,and <br />evaluating augmentation or restorallon of genetic stocks In the Wild. Stocking is only an <br />intenm tool in the Recovery Program smee ocea;rse recovery, by definition, implies that <br />the populations or stocks wili be self-sustaining in the wild. The success of <br />augmentation and restoration stocking is dependent on prior or concurrent <br />implementation of other recovery actions such as flow protecllon, habitat restoration, <br />and management ofnonnallve fishes. This dependency is reflected in the schedule ot <br />subbasin-speCific actions in Section';,O. <br /> <br />9 <br />