Bibliographic record
Abstract
Eastern Hemlock Tsuga canadensis is a coniferous tree native to eastern North America. It ranges from northeastern Minnesota eastward through southern Quebec, and from the southern Appalachian Mountains to northern Georgia and Alabama.;This majestic tree is threatened with elimination by an invasive species Hemlock Woolly Adelgid (HWA) Adelges tsugae introduced in the USA in 1924, which is believed to be a native of Asia. HWA reduces shoot growth, provokes branch dieback, and eventually tree death.;One strategy to help mitigate the fast spread of HWA is to determine what may cause host potential resistance to HWA and how to use this information to develop HWA-resistant management program. This project was initiated to....;To do that, randomly selected trees have been studied in Allegheny National Forest in 2006 with monthly data collection by hand-held soil probe instruments measuring temperature and water content noting the time of sampling and also some of them have been instrumented with station recording equipment called Hobo with recorders inserted at 15 cm soil depth and collecting temperature and water content data continuously. Net N mineralization and net nitrification were calculated using the in situ incubation technique, in this method the values of extractable nitrate-N and ammonium-N in incubated soil are compared to the initial. Exchangeable ammonia was extracted from air-dried soil samples that were sieved through a 2 mm sieve, using 2 M KCl in a 10:1 solution:soil ratio.;Statistical analysis was conducted using SAS with data collected, the main effects were thinning treatment (reference, thinning), soil pH, soil organic matter percentage, tree DBH, soil temperature, sampling months.;The thinning (treatment) is statistically significant (p=0.053). The thinned plots mineralize more total nitrogen, almost 10 mg/kg of soil, approximately 50% than the reference plots. Thus, the observed N mineralization rate for the growing season was 21.7 mg/kg to 30 cm soil depth in control plots, or 65.8 kg N/ha. The estimated rate of N mineralization in HWA-infested stands was 30 times the observed rate, reaching 1973 kg/ha.;A series of spatial prediction maps of the landscape Nitrogen levels were created by using ArcGIS 9.2 software that helped acquire a spatial perspective of the soil N mineralization rates in forest ecosystems at a large scale. These spatial prediction maps will become increasingly important once the HWA infests the study site and will be visible impacts of N mineralization rates change in forest soil.;By creating a data base before HWA infestation of the stand
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 | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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".