Table 5. Relative abundance of organisms found in each drainage. 



Taxa 



DRAINAGE 

 Beaver Creek 



Yellowstone 



Nematoda 

 Nematomorpha 



PaAagoH.dluA 

 Annelida 

 Oligochaeta 

 Tubificidae 



LimnodfuZiH) clapafizdiana!) 

 L. hof, (^mcx6 t-Ml 

 L. iplAoLU 

 L. udekzmainuA 

 LimnocOUluA (immatures) 

 Hirudinea 



Glossiphoniidae 

 Erpobdellidae 

 Piscicolidae 

 Arthropoda 

 Arachnoidea 

 Eijtcia, 

 Crustacea 

 Cladocera 



PoltphomuA 

 Isopoda 



Amphipoda 



Hijaldila azteca 

 Decapoda 

 Astacidae 

 Insecta 

 Diptera 

 Tipulidae 



Hexotoma 



Tlpiila 

 Tabanidae 

 Stratiomyidae 



EutaZla 



UejinoteI.uA 



StuatLomij-ia. 

 Dolichopodidae 



HijdfiophonovLl) 

 Ephydridae 



Ephifdh.a. 

 Sciomyzidae 



Szp(Ldon 

 Culicidae (pupae) 



CvlIzx 



knophzteJi 

 Chaoboridae 



ChaobonuA 



XR 

 XR 



R 



R 



XR 



C 



C 



R 

 R 

 R 



R 



XR 

 XR 

 VC 

 XR 



XR 



XR 



R 



XR 

 A 

 R 



XR 



R 



XR 



XR 



R 



XR 



XR 



XR 

 R 



XR 



XR 



A 



C 



C 



A 



A 



XR 



XR 



A 



VC 



A 



XR 



XR 



R 



A 



XR 



A 



XR 



XR 



XR 

 A 

 C 

 A 



XR 



-20- 



