Fish Length and Weight Summary for Stable Isotope Ontogeny Study

A 2026 study by Glenn T. Schumacher provides length and weight data for sampled Arctic Charr and Brook Trout. The dataset supports an analysis of ontogenetic niche shifts using eye lens stable isotope analysis in four lakes in Maine, USA. It is published under a CC-BY-4.0 license on figshare.

Use Cases

• Analyzing ontogenetic trophic shifts based on δ¹⁵N values mentioned in the description
• Comparing pelagic resource dependence between Arctic Charr and Brook Trout based on the study's findings
• Modeling population-specific responses to climate variability based on differing lifetime δ¹⁵N slope estimates

Strengths

• Dataset is small (5.5 KB), facilitating quick download and inspection.
• The description provides specific methodological context, including the use of Bayesian hierarchical linear regressions.
• Focuses on a specific, understudied application of stable isotope analysis in freshwater salmonids.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset's scope is limited to four specific lakes in Maine, USA.

Provenance

Source

Glenn T. Schumacher

Collection Method

Field sampling of fishes followed by laboratory analysis, including eye lens stable isotope analysis.

Freshness

Last updated 2026-05-15 17:34:07

Geography

Four lakes in Maine, USA, at the southern extent of the Arctic Charr range.