Eelgrass Bed Assessment Using Sidescan and Video in New Brunswick Estuaries, 2007

A towfish survey mapped eelgrass beds in two shallow northern New Brunswick estuaries at a rate of almost 10 km² per day. The data from sidescan and video hardware documented suspected impacts of oyster aquaculture gear and eutrophication on eelgrass. The dataset was published in October 2017 by the Coastal Ecosystems Science Division of Fisheries and Oceans Canada.

Use Cases

• Assess the impact of oyster aquaculture gear on eelgrass beds based on sidescan and video data.
• Map the spatial distribution and health of eelgrass beds at a bay scale based on geospatial survey data.
• Study the effects of eutrophication on coastal marine vegetation based on documented environmental impacts.
• Compare the cost-effectiveness of towfish and echosounder surveys versus SCUBA or satellite methods for habitat mapping.

Strengths

• Survey was conducted at a high mapping rate of almost 10 km² per day.
• Data combines sidescan, video, and potentially echosounder methods for multi-source validation.
• Dataset is published by a government agency (Fisheries and Oceans Canada), suggesting institutional oversight.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is from a specific 2007 survey in two estuaries, which may limit temporal and geographic generalizability.

Provenance

Source

Coastal Ecosystems Science Division, Fisheries and Oceans Canada, Dartmouth, N.S.

Collection Method

A towfish containing sidescan and video hardware was used for mapping from a boat with a crew of three.

Time Range

2007

Freshness

Last updated 2026 -03-24 09:07:43.799953; freshness should be verified.

Geography

Two shallow northern New Brunswick estuaries (Richibucto area).