Exploring the Utility of Hyperspectral Imagery and LiDAR Data for Predicting <i>Quercus garryana</i> Ecosystem Distribution and Aiding in Habitat Restoration
Bibliographic record
Abstract
In west‐coastal Canada Garry oak habitat has been significantly degraded and reduced to 1–5% of its pre‐European settlement range. To reverse the at‐risk status of species associated with Garry oak habitat, restoration efforts are mandatory. Effective restoration requires understanding habitat distribution in a detailed, accurate, and spatially explicit manner. This research investigates whether classified airborne hyperspectral imagery can provide distribution predictions that are more detailed and accurate than those stemming from conventional aerial photograph interpretation. Furthermore, this research assesses whether including structural information represented by light detection and ranging (LiDAR) data increases classification accuracies. Hyperspectral classification resulted in an overall accuracy of 86.4% with a 0.8 Kappa Index of Agreement (KIA) and Garry oak producer's and user's accuracies of 81.7 and 92.1%, respectively. Including structural information as classification input resulted in an overall accuracy of 87.2% with a 0.8 KIA and Garry oak producer's and user's accuracies of 86.9 and 81.5%, respectively. Both rounds of classification identified the precise location and amount of Garry oak trees/tree clusters at a 2‐m spatial resolution providing significant improvement as compared with 1:5,000 scale polygons mapped with a minimum unit of 0.04 ha (i.e. 20 × 20‐m) which comprise conventional data. Despite lower user's accuracy for Garry oak, overall, Garry oak producer's and most per‐class accuracies (producer's and user's) increased with the inclusion of structural information and therefore its use is recommended. Classification results provide contemporary reference information which can inform required restoration activities and be used to judge their effectiveness.
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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 | 0.001 | 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) | 0.000 | 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 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".