South Skunk River Ames
Fish Session #1466
- Sample Date
- 7/18/2013
- Timeframe
- 0945-1045
- Reach Size
- 1409 ft
- Method
- Standard Wadeable
- Sample Quality
- Poor
- Last Update
- 1/18/2017 9:14:51 AM
This site is on privately-owned land. The DNR obtains permission from the landowner(s) prior to conducting any sampling surveys.
Warm Water
Poor
Most fish did not respond to the shock even though we were running 4-6 amps the whole time. Unsure of why the poor effectiveness, our best guess is that the conductivity of the stream was very high. Also had a loose connection in one of the probes causing shock to pulse in and out for last part of reach. Humidity and water temps high which also could have effected the outcome.
Collected Fish
- Identity verification status for this species
- Size Class: Typically only collected for sportfish
- Taxa excluded from species count metrics.
- Click on species name for more information about that species
| Species | Catch | |
|---|---|---|
|
Shorthead Redhorse
Latin: Moxostoma macrolepidotum
Family: Catostomidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
6 | |
|
Red Shiner
Latin: Cyprinella lutrensis
Family: Leuciscidae Tolerance: Tolerant Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
White Sucker
Latin: Catostomus commersonii
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
4 | |
|
Channel Catfish
Latin: Ictalurus punctatus
Family: Ictaluridae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
3 | |
|
Northern Hog Sucker
Latin: Hypentelium nigricans
Family: Catostomidae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: True Is Hybrid: False |
3 | |
|
Highfin Carpsucker
Latin: Carpiodes velifer
Family: Catostomidae Tolerance: Intermediate Trophic: Omnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Smallmouth Bass
Latin: Micropterus dolomieu
Family: Centrarchidae Tolerance: Sensitive Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
2 | |
|
Sand Shiner
Latin: Miniellus stramineus
Family: Leuciscidae Tolerance: Intermediate Trophic: Insectivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Slender Madtom
Latin: Noturus exilis
Family: Ictaluridae Tolerance: Sensitive Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Fantail Darter
Latin: Etheostoma flabellare
Family: Percidae Tolerance: Intermediate Trophic: Benthic Invertivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 | |
|
Hybrid: Green Sunfish X Bluegill
Latin: Lepomis cyanellus X L. macrochirus
Family: Centrarchidae Tolerance: N/A Trophic: N/A Is Exotic: False Is LithoSpawner: False Is Hybrid: True |
1 | |
|
White Crappie
Latin: Pomoxis annularis
Family: Centrarchidae Tolerance: Intermediate Trophic: Top Carnivore Is Exotic: False Is LithoSpawner: False Is Hybrid: False |
1 |
FIBI Calculation Factors
| Factor | Value |
|---|---|
| Drainage area (mi2) | 254.2660 |
| Log(DA) | 2.4053 |
| Total Fish | 29 |
| Fish per 500 ft | 10 |
| Total Species | 12 |
| # Excluded Taxa | 0 |
| # Exotic Species | 0 |
| # LMB-BG | 0 |
| Calculation Last Updated | 2/7/2025 2:32:28 PM |
Fish Index of Biotic Integrity
| Metric Name | Value | Score |
|---|---|---|
| Native Species | 11 | 3.14 |
| Sucker Species | 4 | 5.1 |
| Sensitive Species | 3 | 2.5 |
| Benthic Invertivore Species | 4 | 3.33 |
| Top 3 Abundance Percentage | 48.28 | 0 |
| Benthic Invertivore Percentage | 39.29 | 0 |
| Omnivore Percentage | 35.71 | 0 |
| Top Carnivore Percentage | 21.43 | 0 |
| Lithophilous Spawner Percentage | 31.03 | 0 |
| Tolerance Index | 4.64 | 0 |
| Adjusted Catch per Unit Effort | 1.7 | 0.17 |
| DELT Percentage Adjustment | 0 | 0 |
FIBI Score Explained
Sites that score between 0 - 25 are considered poor. Fish abundance is usually lower than normal or, if fish are abundant, the collection is dominated by a few tolerant species. The number of native fish species present is low. Sensitive species and habitat specialists are absent or extremely rare. The population is dominated by just a few ubiquitous species that are tolerant of wide-ranging water quality and habitat conditions. Pioneering, introduced and/or short-lived fish species are typically the most abundant types of fish. Fish collected at poor sites often have a higher than normal occurrence of external physical anomalies.
This location has been classified as a Reference Site. Reference sites represent natural stream qualities that are least disturbed by human activities within the watershed. These sites are then grouped by ecoregion to establish a benchmark against which other streams in the same ecoregion are compared.
EcoRegion Comparison
Scores for a sampling session are compared against reference sites within the same ecoregion:
| Max | 85 |
| 75th Percentile | 61 |
| Median | 51 |
| 25th Percentile | 38 |
| Min | 13 |
| This Session's Score | 13 |
| Total Reference Site Samples | 129 |
| Mean | 49.84 |
| Standard Deviation | 16.13 |