On the taxonomy, distribution, and ecology of the brown algal genus Laminaria in the Northeast Pacific
Notice bibliographique
Résumé
This study of the brown algal genus Laminaria Lamour consisted of (1) a critical review of the taxonomy and distribution of taxa of Laminaria occurring in the northeast Pacific, (2) a description of the life histories and growth patterns of long and short stipe forms of L. groenlandica and L. saccharina, (3) an evaluation of the roles of temperature, salinity, and water motion as possible determinants of local distributions of long and short stipe forms of L. groenlandica and L. saccharina, and (4) an evaluation of the roles of temperature, salinity, exposure, and submarine illumination in determining the vertical distribution of L. saccharina. These studies were made from 1961 to 1965. Ten species of Laminaria are recognized for the northeast Pacific: L. groenlandica Rosenv.; L. farlowii Setchell; L. saccharina (L.) Lamour.; L. setchellii Silva; L. dentigera Kjellman; L. longlpes Bory; L. sinclairii (Harvey ex Hooker f. et Harvey) Farlow, Anderson et_ Eaton; L. ephemera Setchell; L. yezoensis Miyabe; and L. complanata (Setchell et Gardner) Setchell. Laminaria cordata Dawson is considered conspecific with L. saccharina, L. personata Setchell and Gardner is regarded conspecific with L. yezoensis, and L. platymeris De la Pyl. (sensu Setchell and Gardner) is considered conspecific with L. groenlandica. Pour forms of L. groenlandica are recognized for the northeast Pacific. These forms are not considered as legitimate taxonomic entities but are distinguished merely to provide a means of facilitating discussion. The known habitat requirements for all ten species were broadened and the known distributions of all species, excepting L. groenlandica, were extended. Laminaria saccharina and L. groenlandica produced sori in the late spring and winter. New sporophytes of L. groenlandica appeared throughout the year, whereas those of L. saccharina appeared in late winter and early fall. Depending upon culture conditions, two morphologically distinct forms of gametophytes were produced by both species: large gametophytes were produced in conditions of high temperature and low salinity; and small gametophytes in conditions of low temperature and high salinity. Abnormal sporophytes were observed under conditions conducive to formation of large gametophytes. Patterns of growth for the blades of the two species were essentially the same.. The growth rate decreased with increase in distance from the blade base, and the position of greatest longitudinal growth coincided with the position of greatest lateral growth. The distributions of L. saccharina and the two forms of L. groenlandica about Vancouver Island were correlated with temperature, salinity, and water motion. The two forms of L. groenlandica were absent from areas of high temperature and low salinity; L. saccharina was absent from areas subjected to surf. These field conclusions were subjected to laboratory and field tests involving gametophytes and sporophytes of both species. The distributions of the two forms of L. groenlandica can be explained on the basis of temperature and salinity distributions. Both forms require low temperature and high salinity for survival. Laminaria saccharina has a wide range of tolerance to temperature and salinity. Surf appears to be the agent controlling the distribution of this species. The upper limits of L. saccharina, as observed in Burrard Inlet, are thought to-be directly related, to air temperature and insolation and indirectly related to tidal characteristics. The lower limits appear to reflect the compensation depth of this species.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,002 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,001 | 0,001 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».