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Lyme Bay Dive Survey

Devon Wildlife Trust

Sometimes survey work involves using remote sensing techniques rather than field survey.  DBRC has been working with Devon Wildlife Trust for many years in Lyme Bay to help gather data on the effect of scallop dredging on the marine wildlife and to map the different biotopes present in the area. 

Pink_sea_fan_Gavin_BlackDBRC worked with local divers to survey for pink seafans (Eunicella verrucosa) and other species to see what happens to an area when it was dredged.  DBRC also looked at data collected using drop down video (using an under water video camera towed behind a boat to record species on the seabed) and grab sampling, which scoops up sediment samples from the seabed.

We used this information to produce a substrate map of Lyme Bay, showing where all of the sandy, rocky or gravely areas were, and a biotope map (below), which showed the different communities.


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