Seine net survey

Posted on April 05, 2017

Monitoring on the Shubenacadie River estuary for the Alton Natural Gas Storage Project includes regular seine net surveys by researchers from Dalhousie University.

In a new five-minute video, Dr. Jim Duston explains how a seine net survey is conducted, and reviews the research findings to date, including the impact of cold summer weather on Striped bass growth. Dr. Duston is a fin fish biologist at Dalhousie’s Faculty of Agriculture. 

The seine net surveys take place weekly from late June until October and gather information on young fish and invertebrates such as sand shrimp. In each survey, a large net is hauled about 50 meters in the shallow water along the riverbank where young fish gather. Everything caught in the net is identified and counted, and stomach contents of a small sample are examined to understand the food web. Water temperature, oxygen concentration, salinity and time of day are also recorded.

The seine net survey is part of the extensive research and ongoing monitoring required by government for Alton. The scientific information gathered contributes to the collective knowledge of the Shubenacadie River estuary to help ensure the brining process takes place safely on this important river.

View the seine net survey video

For more information on the Alton Natural Gas Storage project, visit