Distribution of fishes in the Thunder Bay area of northwestern Ontario since deglaciation, with special reference to the darters (Genus Etheostoma) and the Sibley Peninsula
Notice bibliographique
Résumé
The prevailing theory explaining fish distribution in the western Lake \nSuperior basin states that recolonization was from south to north following the \nretreating ice margins. Postulated access to post glacial Lake Superior is via \nthe St. Croix River. However, as the ice masses retreated north of Lake \nSuperior, several ice dams held back glacial Lake Agassiz. These were \nsuccessively removed. Lake Agassiz, which covered much of Manitoba and \nnorthwestern Ontario, then catastrophically overflowed into the Superior basin. \nThis allowed fish to gain access to western areas. \nThe Sibley Peninsula and Thunder Bay area provide key evidence for studying \nthe process of fish recolonization. A survey documenting the fishes of Sleeping \nGiant Provincial Park on the Sibley Peninsula allowed comparison of this area \nwith previously surveyed areas (Isle Royale National Park and Quetico Provincial \nPark). The distribution of two darters, the Iowa (Etheostoma exile) and the \njohnny (E. nigrum), suggested that the Thunder Bay area was recolonlzed from both \nthe south and northeast by utilizing Agassiz outlets. \nCreek chub (Semotilus atromaculatus), rock bass {Ambloplites rupestris) \nand common shiner (Notropis cornutus) are found at the edge of their range near \nor in the Kaministiquia basin suggesting either their late movement from the \nsouth into Lake Superior or low colonization powers. Colonization from the south \nis also suggested by johnny darter populations in the Kaministiquia basin. \nGeographic variation among johnny darter populations reveal that the \nKaministiquia basin populations are meristically unique compared to those from \nother nearby areas. Karoinistiquia basin johnny darters are typically the scaly \nform and possess a high number of preoperculomandibular pores. Iowa darter \npopulations do not exhibit much variation in merlstic characters but, similar \nto johnny darters, do exhibit disjunct distribution throughout the Thunder Bay \narea. \nTemperatures selected by Iowa darters during temperature selection trials \nwere always cooler than those selected by johnny darters. Preference for cooler \ntemperatures, along with survival in the Missouri refugium, allowed earlier \nmovement northward following deglaciation. Iowa darters, inhabiting areas \nproximate to early Agassiz overflows, were deposited on both the Sibley Peninsula \nand Isle Royale. \nAnalysis of rivers based on ichthyofaunal resemblance suggests \nKaministiquia basin rivers and those to the south are very similar, likely due \nto similar points of origin for their ichthyofauna. Similarly, ichthyofaunal \nresemblance among Sibley Peninsula rivers suggests a common origin. \nEffects of Isostatic rebound reveals that the Sibley Peninsula contains \nmore species than Isle Royale and the Huron-Porcupine Mountains if basin \nmorphology is taken into account. Lakes on the Sibley Peninsula were elevated \nand Isolated even later than those of Isle Royale. Deep basins on Isle Royale \nallow for the existence of many large openwater species and cold adapted smaller \nspecies which can not inhabit the shallow lakes of the peninsula. \nFishes now inhabiting the Sibley Peninsula and Isle Royale likely arrived \nin those areas during Agassiz discharges. It is suggested that the prevailing \ntheory of the recolonization of the Lake Superior basin must be revised since \nLake Agassiz overflows likely provided a means for fish to move into, rather than \nthrough, the Superior basin.
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 distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| 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 tête enseignante, 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 ».