Ontario Forest Insect Damage and Defoliation Areas

Government of Ontario data shows areas where forest insect pests have damaged or killed trees through defoliation, foliage mining, and wood boring. The dataset supports monitoring the threat and spread of invasive forest pest insect species. It was last updated in March 2026.

Use Cases

• Map defoliation and wood boring damage areas to identify high-risk zones for targeted pest management.
• Analyze spatial spread patterns of invasive insect species over time to model future infestation risk.
• Calculate timber volume loss within affected forest areas to inform forest management planning.
• Correlate consecutive years of infestation data with tree mortality events to assess cumulative impact.

Strengths

• Data is tracked by the Government of Ontario for official forest management planning.
• Explicitly designed for use in geographic information system (GIS) software for spatial analysis.

Limitations

• Specific data volume (row count, area coverage) and temporal range are not provided.
• Available file formats (PDF, DOCX, HTML, ZIP) suggest the primary data may not be in a standard geospatial format ready for analysis.

Provenance

Source

Government of Ontario.

Collection Method

Monitored and tracked by the Government of Ontario.

Freshness

Last updated March 2026.

Geography

Ontario, Canada.