Area based management of Ascophyllum nodosum Le Joli in the Canadian Maritimes has advanced over the past 60 years from open buying stations in Bays to quota-based area management under coastal leases. In 1989 the resource was divided into geographical sectors containing .9 to 17.6 ha containing 92 t to 2105 t of harvestable biomass. Sectors are the units of management plans under guidelines of the provincial government. GPS tracking mechanical harvesting to Nova Scotia began in 2017 using a new mechanical harvester in a pilot harvest. GPS tracking allowed the calculation of yield with the time, distance, and cutting swath. Harvests were conducted within target bed polygons of 200 m− 2 to 1280 m− 2. Production per hour averaged 1135 ± 169 kg h− 1 yielding 5.96 ± 1.01 kg m− 2 of swept track. The average exploitation rate within targeted polygons was 33.1 ± 14.5%. This level of geographic resolution of the harvest permits significant improvements in management practices, control of management plans, pre and post assessments of the resource. It is a method of addressing landscape scale questions relating to harvesting impacts.
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