Aquatic hyphomycetes in Catamaran Brook: colonization dynamics, seasonal patterns, and logging effects
Bibliographic record
Abstract
Aquatic fungal colonization dynamics and seasonal patterns were investigated in two sites in Catamaran Brook, New Brunswick, Canada, as part of a larger study to evaluate logging effects on a salmon stream. Four leaf-pack trials were conducted between May 1995 and Dec 1996 to determine species composition of the fungal community, the seasonal pattern of colonization on decaying maple leaves, and what effects, if any, invertebrate feeding and logging activities might have on community structure. Contrary to expectation, neither mesh size (i.e., invertebrate presence or absence) nor preliminary logging activity (road construction near one site) had a consistent effect on community structure. Time of immersion of the leaves in the stream, followed by season, were the major factors controlling community structure. Spore production and species diversity measures were highest during the middle part of the colonization period (generally 4–8 wk of immersion in summer trials and 2–4 wk immersion in the autumn trial), and were also higher in the autumn (Sep to Dec) than in the summer trials. Forty-five species of hyphomycetes were recorded during the study period, although 6 taxa (Alatospora acuminata, Anguillospora filiformis, Articulospora tetracladia, Geniculospora inflata, Lunulospora cymbiformis, and a sigmoid species, probably Flagellospora curvula) made up nearly 95% of all identified spores. A total of 35 species were found during the autumn trial, compared to 27 in each of the two summer trials, and 25 during a winter trial. Colonization dynamics also varied with season, but generally there were three main colonization patterns; some taxa were only present or showed highest abundance very early in the colonization period, most arrived or peaked during intermediate stages of leaf decay, and a few were characteristic of the latest stages.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".