Soldier River Pisgah
Analysis Summary for Series #2408
Benthic Macroinvertebrate Index of Biotic Integrity (BMIBI)
| Metric Name | Value | Score |
|---|---|---|
| MH Total Taxa | 26 | 5 |
| SH Total Taxa | 11 | 4.85 |
| MH EPT Taxa | 11 | 4.07 |
| SH EPT Taxa | 7.5 | 5.1 |
| MH Sensitive Taxa | 2 | 1.82 |
| SH Ephem % | 9.08 | 1.16 |
| SH EPT % | 50.2 | 5.26 |
| SH Chiron % | 47.38 | 5.32 |
| SH Scraper % | 0.48 | 0.11 |
| SH Top3Dom % | 83.54 | 2.61 |
| SH Dom FFG % | 54.97 | 7.51 |
| MHBI | 6.05 | 3.52 |
| *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 | 9/15/2020 |
| Sampling Series | Series #2408 |
| Drainage Area (mi2) | 408.494 |
| Log(DA) | 2.61118568195527 |
| Calculation Last Updated | 7/22/2025 3:33:14 PM |
| Sampling Gear | Float ArtSub |
Warm Water
Fair
BMIBI Score Explained
This site was analyzed using the BMIBI-Warm Water assessment methodology.
Sites that score between 31 - 55 are considered fair. Total taxa richness and EPT (Ephemeroptera, Plecoptera, Trichoptera) taxa richness are noticeably reduced from optimum levels; sensitive species and habitat specialists are rare; EPT taxa are still dominant in abundance; however, the most-sensitive EPT taxa have been replaced by ept taxa that are more tolerant of organic enrichment; the community is not well-balanced; a few taxa clearly dominate in abundance, collector-gatherers or collector-filterers often comprise more than 50% of the community.
This location has been classified as a survey site. Survey sites are compared to reference sites within the same ecoregion. A reference site represents natural stream qualities that are least disturbed by human activities within the watershed. Reference sites are grouped by ecoregion to establish a benchmark against which these survey streams are compared.
EcoRegion Comparison
Scores for a sampling session are compared against reference sites within the same ecoregion:
| Max | 72 |
| 75th Percentile | 62 |
| Median | 53 |
| 25th Percentile | 46 |
| Min | 28 |
| This Session's Score | 39 |
| Total Reference Site Samples | 39 |
| Mean | 53.74 |
| Standard Deviation | 10.33 |