Defining high-resolution dredge fishing grounds with Automatic Identification System (AIS) data

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Abstract

High resolution estimates of bottom towed fishing gears are needed to provide relevant information for natural resource management, impact assessment and maritime spatial planning. The use of satellite-based vessel monitoring system (VMS) data is constrained by data access restrictions as well as rather coarse data resolution. This study focuses on mapping dredge gear fishing grounds using fishing effort estimates at the métier level based on automatic identification system (AIS) data. The performance of the approach was evaluated in terms of correct discrimination between fishing and non-fishing activities for known fishing positions as well as appropriate error propagation. The test was conducted in the Bay of Brest (France) in partnership with a committee of local fishers. The results identified dredge fishing grounds for great scallop (Pecten maximus) in the western part of the Bay of Brest and provided high-resolution information for scientists and local decision makers on the spatial and temporal seasonal variability of fishing effort. The proposed method is semi-automatic and generic making it suitable for other applications.

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APA

Le Guyader, D., Ray, C., Gourmelon, F., & Brosset, D. (2017). Defining high-resolution dredge fishing grounds with Automatic Identification System (AIS) data. Aquatic Living Resources, 30. https://doi.org/10.1051/alr/2017038

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