Module 4


Woodens River Watershed Environmental Organization      
Invertebrate Survey          
           
Date 8/17/2000 & 8/18/2000        
Stream Stream Between Black Pt. And Frederick Lake        
Code G        
Weather Sunny (rain last 24h)        
Air T 68        
Water T 69        
% Bankfull 50        
Sampler D-net, 360mm, 1ft2        
# of Samples 3 # counted # of taxa    
Common Name Caddisfly Larva 299 4    
  Mayfly Nymph 70 1    
  Riffle Beetle 6 1   *11 Beetle Larva
  Damselfly Larva 9 2   Not included in
  Dragonfly Larva 1 1   Inverebrate Survey
  Fishfly Larva 23 1   Data Sheet
  Aquatic Worm 2 1    
  Blackfly Larva 44 1    
  Leech 4 1    
  Water Mite 4 1    
Abundance 462        
Density 1711.11        
Predominant Taxon Yellow Caddisfly        
Water Quality Assessments          
Pollution Tolerance Index 19        
EPT Index 5        
EPT to Total Ratio 0.799        
Diversity Assessment          
Total # of Taxa 14        
Predominant Taxa Ratio 0.526        
Site Assessment Rating (16) 12.5        
Average (4) 3.125        
Location of samples Two samples downstream of bridge: 7m (1m from right); 6m        
  (1m from left) and one sample 5m upstream ( 2m from left).        
           
           
Date 08/23/00 &08/24/00        
Stream Stream from Frederick to Five Island Lake        
Code C        
Weather 23 - Sunny; 24 - overcasted and raining        
Air T 62        
Water T 65        
% Bankfull 60        
Sampler D-net, 360mm, 1ft2        
# of Samples 3 # counted # of taxa    
Common Name Caddisfly Larva 177 5    
  Mayfly Nymph 69 1    
  Damselfly Larva 27 2    
  Fishfly Larva 5 1   *47 Beetle Larva
  Scud 6 1   Not included in
  Aquatic Worm 8 2   Inverebrate Survey
  Blackfly Larva 199 1   Data Sheet
  Riffle Beetle 40 1    
  Cranefly 14 1    
Abundance 545        
Density 2018.52        
Predominant Taxon Blackfly Larva        
Water Quality Assessments          
Pollution Tolerance Index 19        
EPT Index 6        
EPT to Total Ratio 0.451        
Diversity Assessment          
Total # of Taxa 15        
Predominant Taxa Ratio 0.365        
Site Assessment Rating (16) 12        
Average (4) 3        
Location of samples All 3 samples taken upstrem of Benchmark. 27.5m (2m right bank);        
  26m (3m right bank); & 29m (4m left bank).        
           
           
Date 8/21/00        
Stream Five Island Lake Run        
Code A        
Weather Clear (20mm rain on weekend)        
Air T 69        
Water T 69        
% Bankfull 60        
Sampler D-net, 360mm, 1ft2        
# of Samples 3 # counted # of taxa    
Common Name Caddisfly Larva 224 5    
  Mayfly Nymph 64 1    
  Damselfly Larva 6 2    
  Fishfly Larva 11 1    
  Scud 28 1    
  Aquatic Worm 22 2    
  Blackfly Larva 1 1    
  Leech 1 1    
  Planarian 41 1    
  Water Mite 1 1    
Abundance 399        
Density 1477.78        
Predominant Taxon Yellow Caddisfly        
Water Quality Assessments          
Pollution Tolerance Index 17        
EPT Index 6        
EPT to Total Ratio 0.722        
Diversity Assessment          
Total # of Taxa 16        
Predominant Taxa Ratio 0.273        
Site Assessment Rating (16) 13        
Average (4) 3.25        
Location of samples All samples upstream of culvert on Grante Cove, in 3 Brooks, 72.3m        
  (1m right bank); 66.6m (3m from right); & 88.3m (4m from left).        
           
           
Date 8/28/00        
Stream Stream between Gates and Millyard Lake        
Code K        
Weather Sunny        
Air T 66        
Water T 69        
% Bankfull 50        
Sampler D-net, 360mm, 1ft2        
# of Samples 3 # counted # of taxa    
Common Name Caddisfly Larva 379 6    
  Mayfly Nymph 47 1    
  Damselfly Larva 20 2    
  Fishfly Larva 4 1   *77 Beetle Larva
  Aquatic Worm 14 2   Not included in
  Blackfly Larva 69 1   Inverebrate Survey
  Riffle Beetle 26 1   Data Sheet
  Dragonfly 3 1    
  Water Mite 2 1    
  Water Penny 1 1    
  Cranefly Larva 5 1    
  Stonefly 6 1    
Abundance 576        
Density 2133.33        
Predominant Taxon Yellow Caddisfly Larva        
Water Quality Assessments          
Pollution Tolerance Index 26        
EPT Index 8        
EPT to Total Ratio 0.750        
Diversity Assessment          
Total # of Taxa 19        
Predominant Taxa Ratio 0.288        
Site Assessment Rating (16) 14.5        
Average (4) 3.625        
Location of samples Two samples downstream of benchmark, 4m (3.7m right bank);        
  & 39.2m (10m left bank); and upstream 22.6m (0.5m left bank).        
           

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Last Updated on 9/20/00
By Bill Matheson
Email: bill.matheson@dal.ca