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Record W2185018477

Establishing a Baseline of Recent Grassland Variability along the Saskatchewan - Montana Border

2007· article· en· W2185018477 on OpenAlexaffabout
Joseph M. Piwowar, Jessica Anne Henderson

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicTree-ring climate responses
Canadian institutionsUniversity of Regina
Fundersnot available
KeywordsGeographyClimate changeBaseline (sea)Vegetation (pathology)Physical geographyGrasslandGlobal warmingArcticEcologyOceanographyGeology
DOInot available

Abstract

fetched live from OpenAlex

The northern Great Plains of North America are significant for three reasons: (i) They are the source for much of the food produced in North America; (ii) They encompass the last remaining native habitats of many endangered species; and (iii) Their vulnerability to climate change is second in North America only to the Arctic. Paleoclimate records for the northern Great Plains show prolonged droughts far more extreme than those that have been experienced since European settlement. There is concern that one of the most immediate impacts of global warming in this region will be a return to past conditions, putting tremendous strains on the sustainability of natural, physical and social prairie infrastructures. In this research we document the variability of prairie grassland environments along the Saskatchewan – Montana border in order to develop a deeper understanding of their spatial and temporal responses to recent climatic events. We applied temporal mixture analysis and principal components analysis to a thirty-year time series of Landsat imagery to identify significant spatial patterns and temporal signals of vegetation vigour. We compared these with concurrent climatic events to gain insights on their responses. We summarize our findings as a baseline of current conditions to which the significance of future changes can be measured.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.675
Threshold uncertainty score0.647

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.017
GPT teacher head0.256
Teacher spread0.239 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2007
Admission routes2
Has abstractyes

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