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Record W7120709613

Dinoflagellés dans le plancton et les sédiments du bras de mer Milne, Nunavut, Canada

2025· other· fr· W7120709613 on OpenAlexaboutno aff
Raphael Gagne

Bibliographic record

VenueSémaphore (Université du Québec à Rimouski) · 2025
Typeother
Languagefr
Field
Topic
Canadian institutionsnot available
Fundersnot available
KeywordsPebbleNova scotiaCeriodaphnia dubiaOverexploitation
DOInot available

Abstract

fetched live from OpenAlex

« Entre 2013 et 2023, la distance parcourue par les vraquiers en Arctique a augmenté de plus de 300%, et ce à la suite de l'ouverture de la mine Mary River en 2014. La mine Mary River est une mine à ciel ouvert sur l'île de Baffin qui exploite un gisement de minerai de fer de haute qualité. Les vraquiers en attente de chargement jettent l'ancre dans le bras de mer Milne où ils vidangent leurs eaux de ballast. Bien qu'il existe des normes internationales et canadiennes afin de limiter l'introduction d'espèces non indigènes (ENI), le rejet d'eau de ballast demeure un vecteur important d'introduction d'ENI dans les écosystèmes aquatiques. Dans ce contexte, ce projet de recherche se penche sur les assemblages de dinoflagellés et de kystes de dinoflagellés du bras de mer Milne (Nunavut, Canada). En s'établissant dans un nouveau milieu, une ENI transforme les relations interspécifiques de la communauté d'accueil nuisant ainsi à la santé de l'écosystème. Ainsi, il est essentiel d'acquérir des informations de référence sur la diversité, la structure et la répartition des communautés indigènes de dinoflagellés de l'Arctique canadien afin de détecter d'éventuelles introductions d'ENI et d'évaluer les risques associés aux invasions biologiques. Un total de 32 taxa appartenant à 16 familles ont été identifiés, dont cinq sont des producteurs potentiels de toxines : Alexandrium cf. catenella, Dinophysis acuminata, Gonyaulax cf. spinifera, Phalacroma rotundatum et Protoceratium reticulatum. Parmi les 32 taxa identifiés, deux ont été observés dans l'Arctique canadien pour la première fois : Gymnodinium cf. irregulare et Phalacroma pulchellum. Les communautés de dinoflagellés de 2017 et de 2019 étaient significativement différentes. Un total de 12 taxa de kystes de dinoflagellés, tous indigènes à l'Arctique canadien, ont été identifiés. Bien qu'aucune preuve ne suggère irréfutablement que des ENI aient été introduites dans le bras de mer, les risques liés au rejet d'eau de ballast sont bien présents, et les changements climatiques et l'augmentation du trafic maritime dans l'Arctique ne font qu'aggraver ce problème. -- Mot(s) clé(s) en français : Arctique canadien, Milne Inlet, Mary River Mine, Phytoplancton, Dinoflagellés, Kystes de dinoflagellés, Eau de ballast, Espèces non indigènes, Espèces toxiques. »-- « Between 2013 and 2023, the distance sailed by bulk carriers in the Arctic increased by more than 300% following the opening of the Mary River Mine. The Mary River Mine, an open-pit iron ore mine on Baffin Island, has been exploiting a high-grade iron ore deposit since 2014. Bulk carriers awaiting loading anchor in Milne Inlet, where they release their ballast water. Although international and Canadian standards exist to limit the introduction of non-indigenous species (NIS), the introduction of NIS into aquatic ecosystems through ballast water discharge remains a significant threat to ecosystem health. In this context, this research project focuses on the dinoflagellate and dinoflagellate cyst (dinocyst) assemblages in Milne Inlet (Nunavut, Canada). NIS can threaten native species as direct predators or competitors, potentially altering interspecies interactions. The introduction of NIS may, therefore, have significant ecological and economic impacts on affected regions. It is essential to acquire baseline information on the diversity, structure, and distribution of native dinoflagellate communities in the Canadian Arctic to detect potential NIS and assess the risks associated with biological invasions. A total of 32 dinoflagellate taxa from 16 families were identified, including five known to produce toxins: Alexandrium cf. catenella, Dinophysis acuminata, Gonyaulax cf. spinifera, Phalacroma rotundatum, and Protoceratium reticulatum. Among the 32 taxa identified, two were recorded in the Canadian Arctic for the first time: Gymnodinium cf. irregulare and Phalacroma pulchellum. The 2017 and 2019 dinoflagellate communities were significantly different. A total of 12 dinocyst taxa, all native to the Canadian Arctic, were identified. Although no irrefutable evidence suggests that NIS have been introduced into Milne Inlet, the risks associated with ballast water discharge are real, and climate change and the increase in maritime traffic in the Arctic only exacerbate this issue. -- Mot(s) clé(s) en anglais : Canadian Arctic, Milne Inlet, Mary River Mine, Phytoplankton, Dinoflagellates, Dinoflagellate cysts, Ballast water, Non-indigenous species, Toxic species. »--

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)0.001
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 score0.023
Threshold uncertainty score0.168

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0020.003
Science and technology studies0.0040.001
Scholarly communication0.0020.000
Open science0.0010.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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 head0.005
GPT teacher head0.178
Teacher spread0.173 · 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".

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Citations0
Published2025
Admission routes1
Has abstractyes

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