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Bryophytes as Indicators of Climate Change

2001· article· en· W2186804987 on OpenAlexaff
L. Dennis Gignac

Bibliographic record

VenueThe Bryologist · 2001
Typearticle
Languageen
FieldEnvironmental Science
TopicPeatlands and Wetlands Ecology
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsClimate changeEnvironmental scienceEcologyBryophyteGeographyPhysical geographyBiology

Abstract

fetched live from OpenAlex

Interest in climate change has increased tremendously in the past 10 to 15 yr, both within and outside the scientific community. The reason for this interest is directly related to the anticipated global warming that will result from increased concentrations of greenhouse gases in the atmosphere. As a result of this interest, several questions have been raised relative to climate warming. For example, how can we predict long term climatic change? How accurate are the predictions? What will be the severity and extent of the changes? How will biodiversity, ecosystems, and habitats be affected if climate change occurs as predicted? How long will it take for species and ecosystems to react to climate change? This essay will focus on the utilization of bryophytes to answer those questions. Bryophytes grow in almost all terrestrial and freshwater environments where plants can be found. These environments have a global distribution and are found in all climatic regimes with the exception of those on permanent ice. The success of bryophytes is largely due to their unique and very effective physiological water relation system that permits them to survive in the wide variety of climates in which they are found. This poikilohydric system permits them to grow during periods when water is available and to suspend their metabolism when water is lacking. Most genera are ectohydric and take up water through the whole surface of the plant and therefore do not need a root system to draw water from the soil. Also, nutrients are taken up through all surfaces from solutes in water that is in contact with the plants. As a result, bryophytes can grow on such very hard surfaces as rocks and tree trunks where higher plants cannot because their roots cannot penetrate the surface.

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)0.002
metaresearch head score (Gemma)0.002
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 score0.003
Threshold uncertainty score0.011

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0030.005
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0000.001
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 head0.016
GPT teacher head0.250
Teacher spread0.234 · 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

Citations184
Published2001
Admission routes1
Has abstractyes

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