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Record W4239405497 · doi:10.2307/1552482

Do Nutrient Availability and Competition Limit Plant Growth of Herbaceous Species in the Boreal Forest Understory?

2002· article· en· W4239405497 on OpenAlexafffund
Ken Arii, Roy Turkington

Bibliographic record

VenueArctic Antarctic and Alpine Research · 2002
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicBotany and Plant Ecology Studies
Canadian institutionsUniversity of British Columbia
FundersNatural Sciences and Engineering Research Council of CanadaArctic Institute of North America
KeywordsUnderstoryHerbaceous plantCompetition (biology)TaigaBorealNutrientBiologyEcologyAgroforestryEnvironmental scienceCanopy

Abstract

fetched live from OpenAlex

An experiment was conducted to investigate whether nutrient availability and competition limit aboveground growth of five herbaceous species in the boreal forest understory. The experiment involved adding fertilizer and removing neighbors of selected target individuals of five different species. Aboveground biomass and leaf number were measured as the response variables, and treatment effects were tested using ANOVA and ANCOVA. The five species showed variable responses to fertilizer addition with Achillea millefolium, Festuca altaica, and Mertensia paniculata showing significant increases. Lupinus arcticus had no response and there was a strong negative effect on survival of Anemone parviflora. Achillea was the only species that showed some growth limitation due to neighboring individuals for both biomass and leaf number; other species showed no response.

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation 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 score0.014
Threshold uncertainty score0.429

Codex and Gemma teacher scores by category

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

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 head0.084
GPT teacher head0.257
Teacher spread0.172 · 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 teacher head, 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

Citations8
Published2002
Admission routes2
Has abstractyes

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