Nearshore Benthic Habitat Surveys of Bras d'Or Lake 2007

2007 survey data from Bras d'Or Lake documents nearshore benthic habitats from depths of less than 1 meter to 10 meters. The dataset includes observations on substrate types, macrophyte canopy, and the condition of eelgrass beds, compiled into a Geographic Information System. It was published by Fisheries and Oceans Canada in 2022.

Use Cases

• Analyze the distribution and health of eelgrass beds relative to water column turbidity and siltation data
• Map substrate type proportions to distinguish different shoreline characteristics for habitat classification
• Use the Geographic Information System data to model potential sites for habitat compensation projects or nearshore protected areas
• Establish a baseline of macrophyte canopy coverage, particularly within the first 3 meters of depth, for long-term ecological change studies

Strengths

• Surveys cover a specific depth gradient from less than 1 meter to 10 meters, providing detailed nearshore data
• Data integrates multiple survey technologies including drop camera, sidescan, and echosounder from a defined methodology phase
• Includes specific biological observations such as eelgrass condition and macrophyte canopy coverage

Limitations

• Spatial coverage is limited primarily to the northern half of Bras d'Or Lake, not the entire lake
• The core survey year is 2007, with contextual history from 2005-2011, so data may not reflect current conditions
• Original column structure and sample size are unspecified, which may complicate direct analysis

Provenance

Source

Fisheries and Oceans Canada, Coastal Ecosystems Science Division

Collection Method

Nearshore benthic surveys using drop camera, fixed mount sidescan, a developed towfish platform, and echosounder ground-truthing

Time Range

Primary survey in 2007, with historical context from 2005 to 2011

Freshness

null

Geography

Bras d'Or Lake, specifically the Eskasoni area and northern half of the lake, Nova Scotia, Canada