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Record W1554740230 · doi:10.1080/09593330802180328

STRUCTURE HYDROLOGIQUE ET EDAPHIQUE D’UN SITE OSTREICOLE: DUNA BLANCA (LA BAIE DE DAKHLA SUD DU MAROC)

2008· article· fr· W1554740230 on OpenAlex
Hakima Zidane, A. Orbi, A Mouradi, F. Zidane, Jean-François Blais

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.

Bibliographic record

VenueEnvironmental Technology · 2008
Typearticle
Languagefr
FieldSocial Sciences
TopicHistorical and Environmental Studies
Canadian institutionsInstitut National de la Recherche Scientifique
Fundersnot available
KeywordsForestryGeographyHumanitiesArt

Abstract

fetched live from OpenAlex

Résumé Le Maroc abrite le long de ses côtes des milieux paraliques tels que des lagunes, des estuaires et des baies qui comptent parmi les plus productifs au monde. Le site le plus important au Maroc est la baie de Dakhla, tant par sa superficie que par sa richesse halieutique. Ainsi, cette baie est un écosystème ayant une forte potentialité en termes d’aquaculture et, principalement, la conchyliculture, et abrite des zones propices pour la tapiculture, la mytiliculture et l’ostréiculture, conformément au plan d’aménagement basé sur le concept de la planification écologique. Un suivi hydrologique (température, salinité, chlorophylle “a”, matières en suspension et matière organique) a été entamé depuis avril 2004 sur un projet d’élevage d’huîtres creuses (Crassostrea gigas) installé sur le site Duna Blanca depuis avril 2003. Aussi, au cours de cette étude, un suivi saisonnier de la structure sédimentaire à la fois granulométrique et métallique a été réalisé. Les prélèvements hydrologiques ont été effectués mensuellement en surface et au fond, en période des vives‐eaux, à marée basse et marée haute. Les résultats issus de cette étude montrent bien que le site présente toujours une richesse en éléments nutritifs et une biomasse chlorophyllienne importante. Un gradient de sursalure est bien net avec une variation saisonnière de la température. La structure sédimentaire est de type vaseux‐sableux à sableux. Les concentrations en métaux dans les sédiments ne dépassent jamais les seuils de toxicité. Cependant, le potentiel de production du site ne peut être sans limite ce qui nécessite une attention particulière au cours de l’extension et de l’installation des nouvelles fermes conchylicoles. Mots clés: Hydrologie, édaphique, baie de Dakhla, ostréiculture, métal ABSTRACT Morocco shelters lagoons, estuaries and bays along its paralic coasts which are among the most productive in the world. The Bay of Dakhla is the longest and the most important site in Morocco due to its halieutic richness. In fact, this bay is an ecosystem with great potential in terms of aquaculture, mainly shellfish farming, and shelters favorable zones for tapiculture, mytiliculture and ostreiculture, in accordance with ecological planning. A hydrological study (temperature, salinity, chlorophyll “a”, suspended matter and organic matter) was conducted on a breeding project of the cupped oyster (Crassostrea gigas) installed on the Duna Blanca site since April 2003. A seasonal follow‐up of sediment structure was carried out involving granulometric and metallic studies. The hydrological sampling was performed monthly on the surface and at the bottom, during spring tides, low tide and high tide. The results confirmed that the site encompasses a wealth of nutritive elements and a significant chlorophyll‐rich biomass. A gradient of hypersalinity is well correlated with seasonal variation of the temperature. The sedimentary structure ranges from muddy‐sandy to sandy type. The metal concentrations in the sediments never exceeded the toxicity thresholds. However, the site’s production potential cannot be limitless and could be affected by the extension and installation of new conchylaceous farms.

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.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Science and technology studies, Research integrity, Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.867
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0010.006
Scholarly communication0.0000.000
Open science0.0010.001
Research integrity0.0020.001
Insufficient payload (model declined to judge)0.0030.001

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 head0.196
Teacher spread0.191 · 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