Investigating the Microbiology of Bioretention
Bibliographic record
Abstract
Bioretention systems are commonly understood to include permeable media with a significant organic component and plants. Although the number and variety of plants and soil composition varies widely, the microbiological community that develops within the soil and plant zone is thought to be important to system performance, especially in the inter-storm period. During this time, many pollutants are transformed, assimilated and incorporated into new vegetative growth. These inter-storm processes play an important role in regenerating the removal capabilities and permeability of the filtration media. While there is no defined method to assess the biological community dynamics in bio retention systems this study was performed to perhaps serve as a foundation to develop a method to assess biological population and diversity as a “health” indicator for bio retention systems. To identify and quantify the microbiological community present in common stormwater filtration treatment systems, samples of filter media were collected and subjected to microscopy analysis. Microscopy analysis included counts for protozoa, fungi, nematodes and bacteria. These counts demonstrate nutrient cycling capacity, predatory food abundance, nutrient retention and transportation, soil structure, aerobic conditions, and provide a general indication of diversity, population balance and soil health. The types and amounts of organisms present in planted bioretention systems (containing organic media) and non-planted conventional sand filter systems (containing inorganic media) were compared to assess the impact of vegetation and organic material on the biological community. The results from this study should provide a better understanding of how biological activity and ultimately pollutant removal processes are affected based on the presence of vegetation and organic material in different stormwater filtration systems.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".