Ringed Seal Density Along a Latitudinal Sea-Ice Gradient

Aerial survey data estimates ringed seal (Pusa hispida) density across a latitudinal gradient in the eastern Canadian Arctic. The dataset captures the species' response to regional variation in sea-ice conditions, showing an order of magnitude lower density at higher latitudes with multiyear ice. Data is provided by Fisheries and Oceans Canada.

Use Cases

• Model the relationship between seal density and latitudinal position to predict shifts under climate change.
• Analyze the correlation between seal density and the transition from first-year to multiyear ice conditions.
• Use aerial survey transect data to validate habitat suitability models for Arctic marine mammals.

Strengths

• Data is derived from systematic aerial surveys, a standard method for marine mammal population assessment.
• Findings highlight a specific, non-uniform density response across a documented latitudinal gradient.
• Dataset is provided by a national government agency, Fisheries and Oceans Canada, ensuring authoritative collection.

Limitations

• The specific number of survey rows, columns, and sample size is not provided in the input.
• Data is focused on the eastern Canadian Arctic, limiting direct geographic generalizability to other regions.
• The description suggests a correlation with ice type but does not confirm the availability of direct sea-ice measurements in the dataset.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Systematic aerial surveys conducted along a latitudinal gradient.

Time Range

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Freshness

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Geography

Eastern Canadian Arctic along a latitudinal gradient.