SOURCE & DESIGN NOTES

Where the information comes from.

This website uses a real research case, a teaching model, and questions that keep the two distinct.

The case and community contributions

Bowles, E., Marin, K., Mogensen, S., MacLeod, P., & Fraser, D. J. (2020). Size reductions and genomic changes within two generations in wild walleye populations: associated with harvest? Evolutionary Applications, 13, 1128–1144. doi:10.1111/eva.12987.

The supplied paper grounds the site’s river comparisons, sampling dates, findings, qualifications, and descriptions of how Cree Elders and fishers shaped the inquiry. Methods 2.1 describes the interviews; Table 1 and Results 3.2.1 qualify size comparisons; Figure 2 displays lengths and masses; the Discussion addresses alternatives. Pamela MacLeod’s first-person contribution appears in Box 1, p. 1141.

Figure 2 is cropped from the article and otherwise unchanged. Credit: Bowles et al. (2020), © The Authors, published by Wiley under the Creative Commons Attribution license. Box 1 is reproduced in full in the reading popup under the same CC BY license. Its wording is unchanged; additional headings and paragraph breaks support reading. The MacLeod excerpt is attributed at each use. Qualitative summaries are explicitly labelled; no numerical river means have been fabricated.

Scientific debate

• Larson, W. A., Isermann, D. A., & Feiner, Z. S. (2021). Incomplete bioinformatic filtering and inadequate age and growth analysis lead to an incorrect inference of harvested-induced changes. Evolutionary Applications, 14, 278–289. Article · NOAA full text.
• Bowles, E., Marin, K., MacLeod, P., & Fraser, D. J. (2021). A three-pronged approach that leans on Indigenous knowledge for northern fish monitoring and conservation. Evolutionary Applications, 14, 653–657. Authors’ response.

The debate is explored in chapter 6 through the reliability of age, growth, and genomic analyses and the role of Indigenous knowledge in interpreting the fishery. Larson and colleagues acknowledged Indigenous knowledge but challenged the causal inference. Bowles and colleagues argued that the critique gave that knowledge too little weight and defended considering all three evidence types together. Students compare the arguments, identify unresolved questions, and propose continuing inquiry.

Continuing monitoring and community media

• A twenty-year assessment of Mistassini Lake spawning walleye body size (2022). The later-monitoring view draws on pp. 4–7. FISHES publications and reports.
• Episode Six – Fish, published by James Bay Cree Communications. Stanley Mianscum and his son Conrad reflect on their family’s fishing heritage in Episode Six – Fish, from James Bay Cree Communications. Their conversation connects fishing with family and knowledge shared across generations. The video opens on its publisher’s site; it is optional.

Knowledge across generations

MacLeod’s account connects Cree knowledge with relationships to land and water and its transmission between generations. Students return to this theme when planning how continuing observations and community expertise could support future understanding of the fishery.

The teaching model

Every simulated fish and output is labelled Teaching model. Three fictional diploid growth loci, a food-dependent length rule, probabilistic capture, and random inheritance make the mechanism inspectable. No real “large fish gene” was identified as the cause of the study’s observations. The stream is an original schematic SVG/CSS illustration. The lake outline is a simplified vector adaptation of Bowles et al. (2020), Figure 1a (CC BY), checked against the map in Marin & Fraser’s 2022 report, Figure 1. North is up; islands and the relative river sites are retained. Short river reaches are schematic, so the illustration is an orientation guide rather than a navigation map.

Curriculum

Alberta Education. Biology 20–30 Program of Studies (updated 2014), Aboriginal Perspectives, p. 2; Biology 30 Unit D, pp. 75–76. Government-hosted copy of the Alberta program. The teacher guide identifies the specific questions supporting gene-pool change, inquiry, communication, and relationships with the environment. This activity does not cover every Unit D outcome.