Cultural responses to the Medieval Warm Period on the Northeastern Plains : the example from the Lockport site (EaLf-1)
Bibliographic record
Abstract
This thesis examines the relationship between migration and environmental change among Precontact peoples of the Northeastern Plains of North America. Here, the northward expansion of maize horticulture accompanied the Medieval Warm Period (ca. 800-1400 AD) and probably ended with the onset of the Little Ice Age (ca. 1400-1850 AD). Archaeological evidence for escalating inter-group conflict and endemic food stress on the Northeastern Plains of North America beginning ca. 1150-1200 AD suggests that migration was probably an attractive option; therefore, populations moved away from areas of the greatest economic and social stress between approximately 1200-1400 AD. Some of these people moved north along the Red River to the east bank of the Red River in southeastern Manitoba, Canada between the late 14th to mid- 15th centuries AD. Here, the Lockport site (EaLf-1) contains maize, bell-shaped storage pits, bison scapula hoes, and unusual pottery attributable to the migration of southern maize growers. This occupation marks the northern terminus of maize horticulture in North America; it also coincides with the latter portion of the Medieval Warm Period and with evidence for widespread political realignment to the south in Minnesota, North Dakota and Iowa. Evidence from this site and from adjacent regions is used to demonstrate that the movement of foreign groups into southeastern Manitoba is driven by a combination of sociocultural and climatic factors. Within archaeology there has been a movement to reject models that invoke climate change as a cause of cultural change, dismissing them as oversimplified and deterministic. The approach used here treats socio-political...
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot 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.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".