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Record W2807740583

Biotic and abiotic effects on temperate tree range expansion at the boreal - temperate ecotone

2018· dissertation· en· W2807740583 on OpenAlexfundaboutno aff
P. Evans

Bibliographic record

VenueMemorial University Research Repository (Memorial University) · 2018
Typedissertation
Languageen
FieldEnvironmental Science
TopicSpecies Distribution and Climate Change
Canadian institutionsnot available
FundersMemorial University of NewfoundlandResearch and Development Corporation of Newfoundland and Labrador
KeywordsEcologyEcotoneAbiotic componentTemperate climateTemperate rainforestRange (aeronautics)NicheTemperate forestBiotic componentHerbivoreClimate changeBorealBiologyGeographyHabitatEcosystem
DOInot available

Abstract

fetched live from OpenAlex

The broad-scale effects of climate change on the distribution of species around the planet \nare relatively well understood, however our predictive powers of how species ranges will \nshift and re-organise are hampered by species’ interactions with one another and their \nenvironments. An investigation into seedling emergence constraints of four northern \ntemperate tree species beyond their realised geographical niche was conducted using the \navailable literature and experimental manipulation of natural systems. Two iterations of \nthe field experiment (2015/16 & 2016/17) allowed for development and evaluation of \nexperimental design, particularly vertebrate herbivore exclosure design. Climatic \nvariables were largely unimportant drivers of model species’ ability to successfully \nemerge at experimental sites across Newfoundland, whereas biotic interactions impacted \nspecies-specific emergence, depending on reproductive strategies. Seed predation and \ncanopy composition were among the most important biotic drivers of model species’ \nemergence success.

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: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.027
Threshold uncertainty score0.054

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 studies0.0000.001
Scholarly communication0.0010.000
Open science0.0000.001
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 head0.021
GPT teacher head0.251
Teacher spread0.230 · 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
Published2018
Admission routes2
Has abstractyes

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