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Record W7002685523

Nitrous oxide emission rates and abundances of nitrogen-cycling genes in soils of willow trees inoculated with mycorrhizal fungi

2010· dissertation· en· W7002685523 on OpenAlexfundno aff

Bibliographic record

VenueThe Atrium (University of Guelph) · 2010
Typedissertation
Languageen
FieldAgricultural and Biological Sciences
TopicMycorrhizal Fungi and Plant Interactions
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsWillowInoculationRhizosphereSoil waterGreenhouseMycorrhizal fungiBulk soilMycorrhiza
DOInot available

Abstract

fetched live from OpenAlex

A greenhouse experiment was designed to explore the effects of mycorrhizal inoculation on native abundances of N-cycling microbial communities and N2O emission rates. Six different soil types were examined as a medium for growing willow ('Salix spp.') trees, which were inoculated with arbuscular mycorrhizae (AM), ectomycorrhizae (EM), AM + EM, or neither. Nitrogen-cycling gene abundances were found to be significantly different between soil types and influenced by rhizosphere presence but not inoculation. While inoculation effects were seen in one clay soil's NO 3-, NH4+, and N2O measurements, this was not reflected in gene abundance. Principal component analysis on environmental variables and gene abundances indicated correlations, though the nature of the relationship depended on the soil type and was largely texturally-driven. Strong evidence for primarily nitrifier-driven N2 O emissions was found in bulk soil. This research broadens the understanding of mycorrhizal-bacterial interactions and their effects on N-cycling in different soil ecosystems.

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)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.004
Threshold uncertainty score0.008

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
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 head0.008
GPT teacher head0.199
Teacher spread0.191 · 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 designBench or experimental
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
Published2010
Admission routes1
Has abstractyes

Explore more

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