Beaver Creek Akron
Analysis Summary for Series #1538
Benthic Macroinvertebrate Index of Biotic Integrity (BMIBI)
| Metric Name | Value | Score |
|---|---|---|
| MH Total Taxa | 30 | 10 |
| SH Total Taxa | 6.5 | 6.44 |
| MH EPT Taxa | 7 | 5.53 |
| SH EPT Taxa | 1 | 1.5 |
| MH Sensitive Taxa | 0 | 0 |
| SH Ephem % | 0 | 0 |
| SH EPT % | 3.02 | 0.32 |
| SH Chiron % | 76.84 | 2.34 |
| SH Scraper % | 4.02 | 0.9 |
| SH Top3Dom % | 91.44 | 3.29 |
| SH Dom FFG % | 83.89 | 2.68 |
| MHBI | 6.21 | 2.93 |
| *Mouse-over metric for full name | ||
| **Final IBI is sum of scores multiplied by 0.8333 | ||
Analysis Factors
| Factor | Value |
|---|---|
| BMIBI Type | Warm Water |
| Sample Date | 8/12/2013 |
| Sampling Series | Series #1538 |
| Drainage Area (mi2) | 4.685 |
| Log(DA) | 0.670709595223797 |
| Calculation Last Updated | 7/22/2025 3:36:16 PM |
| Sampling Gear | LowFlow ArtSub |
Warm Water
Poor
BMIBI Score Explained
This site was analyzed using the BMIBI-Warm Water assessment methodology.
Sites that score between 0 - 30 are considered poor. Severely impaired macroinvertebrate community. Low numbers of taxa present, sensitive species not present, EPT taxa are rare or not present; community extremely unbalanced; dominated by a few pollution tolerant organisms; some trophic functional feeding groups are not represented. Total numbers of organisms may be low. Total taxa richness and EPT taxa richness are noticeably reduced from optimum levels; sensitive species and habitat specialists are rare; EPT taxa no longer dominate the macroinvertebrate community. Taxa that are tolerant of organic enrichment and/or excessive sediment loads are dominant; the community is unbalanced; a few generalist taxa make up a high percentage of the organisms present; collector-gatherers or collector-filterers are very dominant.
This location has been classified as a Candidate Reference Site. Further study is required to determine if this site represents natural stream qualities that are least disturbed by human activities within the watershed.
EcoRegion Comparison
Scores for a sampling session are compared against reference sites within the same ecoregion:
| Max | 88 |
| 75th Percentile | 58 |
| Median | 51 |
| 25th Percentile | 45 |
| Min | 10 |
| This Session's Score | 30 |
| Total Reference Site Samples | 45 |
| Mean | 50.91 |
| Standard Deviation | 13.26 |