Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

Thompson Fork - Grand River Davis City

Invert Sampling Session #5328

Session Data

Sample Date
7/19/2012
Sampling Gear
Floating Artificial Substrate
Lab ID Number
45085
Sample Quality
Fair
Created Date
10/18/2013 9:17:17 AM
Last Update
3/30/2015 10:44:55 AM

Semi-Quantitative Sampling

Replicate Number
1
Dominant Form Periphyton
Nonfilamentous Algae
(LT- Light, MD- Moderate, MH- Moderate/Heavy, HV- Heavy)
Periphyton Growth
LT
Sedimentation/Embededness
LT
Colonization
LT
Comments

suboptimal flow

Collected Benthic Macroinvertebrates

  • Total taxa collected 5
  • Total individuals collected 109
Scientific Name Order Family Common Name # Collected
Caenis hilaris Ephemeroptera Caenidae Small Squaregill Mayflies 1
Chironomidae Diptera Chironomidae Non-Biting Midges, Midges 92
Hydropsyche simulans Trichoptera Hydropsychidae Common Netspinner Caddisflies 2
Hydropsychidae Trichoptera Hydropsychidae Common Netspinner Caddisflies 1
Oligochaeta Aquatic Worms 13

= Excluded from taxa count metrics

Notes: