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Record W1990477321 · doi:10.4138/181

Sir William Dawson (1820–1899): a very modern paleobotanist

2006· article· en· W1990477321 on OpenAlexvenueaboutno aff
Howard J. Falcon‐Lang, John H. Calder

Bibliographic record

VenueAtlantic Geology · 2006
Typearticle
Languageen
FieldAgricultural and Biological Sciences
TopicBotany, Ecology, and Taxonomy Studies
Canadian institutionsnot available
FundersNatural Environment Research CouncilUniversity of Bristol
KeywordsPennsylvanianTaphonomyContext (archaeology)PaleobotanyGeologistGeologyPaleontologySedimentary rockArchaeologyGeographyBiology

Abstract

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Sir William Dawson was one of Canada’s most influential Nineteenth Century geologists. Although a lifelong opponent of the concept of evolution, a stance that resulted in him being sidelined by the scientific community, he made enormous contributions to Pennsylvanian paleobotany, especially at the Joggins fossil cliffs of Nova Scotia. Key to Dawson’s success was his recognition of the importance of a field-based research program, in which fossil plants could be observed in their precise geological context over a sustained period of time. Uniquely trained as both geologist and botanist, he was skilled in the microscopic analysis of permineralized plant anatomy, and appreciated the enormous potential of fossil charcoal as an untapped source of systematic information. Arguably his most extraordinary insights came in the field of plant taphonomy, in which studies of modern sedimentary processes and environments were used to interpret the rock record. His analysis of fossil plants in their sedimentary context allowed Pennsylvanian coal swamp communities, dominated by lycopsids and calamiteans, to be distinguished from the coniferopsid forests, which occupied mountainous regions further inland. The lasting significance of Dawson’s paleobotanical work is emphasized by many recent papers concerning the Pennsylvanian coal measures of Atlantic Canada, which have either directly built on research topics that Dawson initiated, or have confirmed hypotheses that Dawson framed. Until recent times, the discipline of paleobotany has been dominated by systematic fossil plant description with little or no reference to geological context. By virtue of his distinctively holistic approach, synthesizing all available geological and botanical data, Dawson is marked out from his contemporaries. His methodology does not appear old-fashioned even today, and it is therefore with justification that we describe him as a very modern paleobotanist. Resumé Sir William Dawson a été l’un des géologues les plus influents du 19e siècle au Canada. Même s’il s’est opposé toute sa vie au concept de l’évolution, une position qui a amené le milieu scientifique à l’ignorer, il a énormément contribué à la paléobotanique pennsylvanienne, spécialement dans les falaises fossilifères de Joggins de la Nouvelle-Écosse. La clé du succès de Dawson réside dans le fait qu’il avait reconnu l’importance d’un programme de recherche sur le terrain prévoyant l’observation des plantes fossiles dans leur milieu géologique particulier pendant une période de temps prolongée. Grâce à sa formation unique de géologue et de botaniste, il possédait la compétence voulue pour réaliser une analyse microscopique de l’anatomie des plantes perminéralisées et il comprenait le potentiel énorme du charbon de bois fossile comme source inexploitée de données systématiques. On pourrait soutenir que ses idées les plus extraordinaires se sont manifestées dans le domaine de la taphonomie végétale, dans lequel des études d’environnements et de processus sédimentaires modernes ont servi à interpréter des antécédents lithologiques. Ses analyses de plantes fossiles dans leur contexte sédimentaire ont permis de distinguer les communautés des marécages houillers pennsylvaniens, dans lesquels prédominent les lycopsides et les calamites, des forêts coniféropsides, qui occupaient les régions montagneuses plus à l’intérieur des terres. De nombreuses communications récentes au sujet des couches houillères pennsylvaniennes des provinces de l’Atlantique, qui s’appuient directement sur des sujets de recherches amorcées par Dawson ou ayant confirmé des hypothèses formulées par Dawson, mettent en relief l’importance durable des travaux paléobotaniques de Dawson. La discipline de la paléobotanique a jusqu’à tout récemment été dominée par des descriptions systématiques de plantes fossiles évoquant à peine ou n’évoquant pas du tout le contexte géologique. Dawson s’est démarqué de ses contemporains au moyen de son approche nettement holistique en réalisant une synthèse de toutes les données géologiques et botaniques accessibles. Sa méthode de travail ne semble pas rétrograde, même aujourd’hui, et il est par conséquent tout à fait justifié que nous le décrivions en tant que paléobotaniste très moderne.

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)0.001
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: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Other · Consensus signal: none
Teacher disagreement score0.050
Threshold uncertainty score0.099

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.001
Science and technology studies0.0040.005
Scholarly communication0.0030.003
Open science0.0010.002
Research integrity0.0020.005
Insufficient payload (model declined to judge)0.0070.003

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 head0.199
Teacher spread0.182 · 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 designNot applicable
Domainnot available
GenreOther

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".

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Citations12
Published2006
Admission routes2
Has abstractyes

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