Aquatic Macroinvertebrate Summary Data 



9/19/00 



Site Name: Shields River 



Site ID: McCloud station 



TOTAL ABUNDANCE 

 Ephemeroptera + Plecoplera + 

 Trichoptera (EPT) abundance 



TOTAL NUMBER OF TAXA 

 Number EPT taxa 



TAXONOMIC GROUP COMPOSITION 



322 



264 



37 

 24 



GROUP 



Misc. Taxa 



Odonata 



Ephemeroptera 



Plecoptera 



Hemiptera 



Megaloptera 



Trichoptera 



Lepidoptera 



Coleoptera 



Diptera 



Chrionomidae 



#TAXA ABUNDAN PERCENT 



CONTRIBUTION OF DOMINANT TAXA 



TAXON ABUNDANCE 



Glossosoma sp. 



Cinygmula sp. 



Lepidostoma sp.-sand case larv. 



Hydropsyche sp. 



Orthocladius sp 



SUBTOTAL 5 DOMINANTS 



Zapada cinctipes 



Rhithrogena sp 



Hesperoperla pacifica 



Arctopsyche grandis 



Brachycentrus americanus 



TOTAL DOMINANTS 



SAPROBIC INDICES 

 HilsenhofFBiotic Index 



2.36 



RATIOS OF TAX GROUP ABUNDANCES 

 EPT/Chironormdae 



6.60 



FUNCTIONAL FEEDING GROUP (FFG) COMPOSITION 



GROUP 



Predator 



Parasite 



Collector-gatherer 



Collector-filterer 



Macrophyte-herbivore 



Piercer-herbivore 



Scraper 



Shredder 



Xylophage 



Omnivore 



Unknown 



RATIOS OF FFG ABUNDANCES 

 Scraper/Collector-filterer 

 Scraper/( Scraper + C filterer) 

 Shredder/Total organisms 



#TAXA ABUNDAN PERCENT 



DIVERSrrY MEASURES 

 Shannon H (loge) 

 Shannon H (Iog2) 

 Evenness 

 Simpson D 



2.68 

 3.87 

 0.74 

 0.06 



COMMUNITY VOLTINISM ANALYSIS 

 TYPE ABUNDANCE PERCENT 



Multivoltme 40 12.42 



Univoltine 224 69.57 



Semivoltine 58 18.01 



Tolerant 



Intolerant 



dinger 



#TAXA ABUNDANCE PERCENT 

 2 10 311 



6 24 7.45 



18 198 61.49 



