Hydrological and biogeochemical controls on plant species distribution within calcareous fens
Bibliographic record
Abstract
Abstract This study determines spatial patterns of plant species richness and diversity in three calcareous fens and quantifies individual species response and range/tolerance to hydrological, peat physical, and porewater nutrient gradients using nonlinear quantile regression. Species richness and diversity were highly variable across the sites, with no single species occupying more than 25% of the area surveyed. Variable hydrological regime was related to distance from the principal source area of water to the fens. Surface peat organic matter and calcium carbonate content ranged from 11 to 91% and 2 to 83%, respectively. Dissolved inorganic nitrogen (DIN) and potassium concentrations from the shallow porewater ranged from 0 to 4 mg l −1 , whereas available phosphorus was < 100 µg l −1 . Species exhibited various response shapes to the environmental gradients, which produced segregated realized ranges. The duration of initial saturation of the peat from the start of the growing season and the peat organic matter content produced the greatest number of complete species responses and ranges. Aggregation of species across growth types based on environmental responses mirrored visually described communities, demonstrating the applicability of the method of analysis. The generation of species response curves for a suite of readily measured environmental variables can be a useful tool for assessing conceptual models of ecosystem functioning and wetland restoration/creation success. Copyright © 2011 John Wiley & Sons, Ltd.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 teacher head, 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".