Golden Star Tunicate Biofouling Detections in Newfoundland and Labrador

Fisheries and Oceans Canada's monitoring program provides data on detections of the invasive Golden star tunicate (Botryllus schlosseri) in coastal Newfoundland and Labrador. The program has conducted annual field surveys since 2006 using standardized biofouling collector plates deployed from May to October. It tracks the introduction, establishment, and spread of this and other non-native species.

Use Cases

• Analyze the spread of Golden star tunicate detections over time since 2006 to model invasion patterns.
• Map detection locations (e.g., Placentia Bay, Fortune Bay) to identify high-risk coastal areas for biofouling.
• Compare species detection data from different sampling protocols used before and after 2018 to assess monitoring efficacy.
• Correlate detection events with environmental baseline data from the 2018-2022 enhancement program in Placentia Bay.

Strengths

• Long-term monitoring program with annual surveys conducted consistently since 2006.
• Standardized collection protocols using georeferenced intertidal and shallow subtidal sites.
• Enhanced statistical replication from 2018 onward with up to 10 individual collectors deployed per site.
• Explicit focus on seven specific invasive biofouling organisms detected in the region.

Limitations

• Sample data and specific column structure (e.g., detection coordinates, abundance metrics) are unavailable for review.
• Unknown total number of observations (rows) or data points collected across the monitoring period.
• Spatial coverage is limited to harbors, marinas, and coastal areas within Newfoundland and Labrador.

Provenance

Source

Fisheries and Oceans Canada, Coastal and Freshwater Ecology, Northwest Atlantic Fisheries Centre.

Collection Method

Annual field surveys using biofouling collector plates deployed at georeferenced intertidal and shallow subtidal sites from May to October.

Time Range

2006 to present, with noted sampling enhancements from 2018-2022.

Freshness

Data was published in March 2024, with the record last updated in March 2026.

Geography

Coastal Newfoundland and Labrador, including specified bays like Placentia Bay, Fortune Bay, St. Mary’s Bay, and Conception Bay.