The delivery, seasonal storage, and trophic transfer of marine-derived nutrients within a stream-riparian ecotone
Bibliographic record
Abstract
The objectives of this study were to evaluate nutrient delivery, storage, and trophic transfer between the Horsefly River spawning channel and its riparian zone during the 2011 sockeye salmon run and subsequent 2012 spring. The hyporheic zone was investigated as a pathway for nutrient exchange, transformation, and storage by analyzing water movement and ammonium (NH⁴⁺) concentration. Using stable isotopic analysis, the assimilation and storage of marine-derived nutrients (MDN) were evaluated through multiple trophic levels. Results identified lateral hyporheic flow as a dominant pathway for MDN delivery to deep-rooted vegetation, specifically willow trees <7-m from the streambank. Amphipods and chironomids appeared to assimilate MDN in the fall and maintained high spring biomass, indicating an important nutrient linkage in the salmon feedback loop. Finally, a temporal reversal in NH⁴⁺ concentration across the stream-riparian interface and a seasonal shift in nutrient fluxes revealed reciprocal subsidies that highlight the interconnectedness of these adjacent systems. --Leaf ii.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| 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".