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Patterns of exotic plants in relation to anthropogenic edges within urban forest remnants

2012· article· en· W1966071348 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueApplied Vegetation Science · 2012
Typearticle
Languageen
FieldEnvironmental Science
TopicUrban Green Space and Health
Canadian institutionsDalhousie University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsSpecies richnessUnderstoryVegetation (pathology)EcologyIntroduced speciesGeographyAbundance (ecology)BiodiversityAgroforestryEnvironmental scienceBiologyCanopy

Abstract

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Abstract Question How is the abundance of exotic plants within urban forest remnants influenced by distance to the edges of forest boundaries and recreational trails? Location H alifax, N ova S cotia, C anada. Methods Gradients in the cover of exotic plants, as well as the richness of exotic and native vascular species, were examined as a function of distance from anthropogenic forest boundaries and recreational trails. Plants were sampled in 2 m × 10 m and 10 m × 10 m plots distributed among 11 urban forest remnants. Randomization tests were used to quantify the distance of edge influence from both forest boundaries and trails, and to determine if there was an interaction between them. Results The cover and richness of exotic plants and richness of native species decreased with increasing distance from forest boundaries and trails. Edge influences extended to distances of ca. 50 and 3 m for forest boundaries and trails, respectively, and were stronger for measures of understorey than of overstorey vegetation. Vegetation was simultaneously influenced by both edge types such that exotic cover and richness were higher when in close proximity to two edges than when subject to either edge alone (i.e. a positive interaction). Conclusions It is important to consider the influence of edges in the design and management of forest remnants to improve the ability to conserve native biodiversity within cities. Results from this study may be used to guide the design of such systems, particularly by suggesting appropriately sized patches and trail densities.

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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 score0.024
Threshold uncertainty score0.541

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
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 head0.036
GPT teacher head0.277
Teacher spread0.241 · 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