Krill Aggregation Models for Blue Whale Habitat in Eastern Canada

Statistical habitat models predict Significant Aggregations of Krill (SAK) in eastern Canadian waters to support blue whale conservation. The analysis identifies areas covering less than 2% of the spatial domain where dense krill aggregations are likely to occur. This dataset, produced by Fisheries and Oceans Canada in 2016, uses Generalized Additive Models (GAMs) to link krill distribution with environmental conditions.

Use Cases

• Analyze the spatial distribution of Significant Aggregations of Krill (SAK) to identify key foraging areas for western North Atlantic blue whales.
• Validate Generalized Additive Model (GAM) predictions of SAK probability against seasonal and krill category variations.
• Integrate SAK geospatial data with oceanographic datasets to study environmental drivers of krill aggregation.

Strengths

• Models are based on peer-reviewed scientific methodology documented in a DFO Canadian Science Advisory Secretariat Research Document.
• Output defines specific aggregation areas, with SAK covering less than 2% of the studied spatial domain.
• Data supports a direct conservation application: identifying important habitat for an endangered species, the blue whale.

Limitations

• The underlying raw krill observation data and specific model input variables are not provided in the dataset.
• Model predictions are from 2016 and may not reflect current oceanographic conditions or krill distributions.
• The spatial domain is limited to eastern Canadian waters, limiting applicability to other geographic regions.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Generalized Additive Models (GAMs) applied to krill survey data to predict probability of Significant Aggregations of Krill (SAK).

Time Range

Study published in 2016; specific temporal coverage of input data is not stated.

Freshness

The core analysis is from 2016, though the metadata record was updated in March 2026.

Geography

Eastern Canadian waters, western North Atlantic.