High Primary Production Areas in Gulf of St. Lawrence 1998-2010

1998-2010 monthly data identifies high primary production zones in the Gulf of St. Lawrence using a biogeochemical model. The dataset is derived from a 13-year simulation of phytoplankton biomass, applying a threshold of 20 mg C m-2 to define high productivity cells. It was generated by Fisheries and Oceans Canada using the Gulf of St. Lawrence Biogeochemical Model (GSBM).

Use Cases

• Analyze spatiotemporal patterns of high primary production zones using the 20 mg C m-2 threshold to study seasonal phytoplankton blooms.
• Validate the Gulf of St. Lawrence Biogeochemical Model's 10 state variables by comparing simulated primary production against observational data.
• Map areas where primary production exceeds the high threshold to inform marine ecosystem management and conservation planning.
• Investigate the relationship between modeled phytoplankton growth rates, influenced by light and nutrient availability, and the identified high-production zones.

Strengths

• 13-year temporal coverage (1998-2010) provides a long-term perspective on primary production variability.
• Data is derived from a sophisticated 3D biogeochemical model (GSBM) incorporating 10 state variables and NPZD dynamics.
• Model output has a monthly resolution, capturing seasonal cycles of phytoplankton production.
• Spatial data is based on a model grid with approximately 6 x 8 km horizontal resolution.

Limitations

• Data is synthetic model output, not direct observational measurements, and is subject to model assumptions and parameterizations.
• The binary classification (high vs. not high) based on a single threshold simplifies the continuous gradient of primary production.
• Model coverage is limited to the Gulf of St. Lawrence and estuary, not applicable to other marine regions.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Synthetic data generated from the coupled CANOPA-GSBM numerical biogeochemical model.

Time Range

1998 to 2010

Freshness

Model run covers 1998-2010; metadata was last updated in March 2026.

Geography

Estuary and Gulf of St. Lawrence, Canada