Field surveying of marine recreational fisheries in Norway using a novel spatial sampling frame reveals striking under-coverage of alternative sampling frames

Vølstad, Jon Helge, Christman, Mary, Ferter, Keno, Kleiven, Alf Ring, Otterå, Håkon, Aas, Øystein, Arlinghaus, Robert, Borch, Trude, Colman, Jonathan, Hartill, Bruce, Haugen, Thrond O., Hyder, Kieran ORCID:, Lyle, Jeremy M., Ohldieck, Martin Junker, Skov, Christian, Strehlow, Harry V., van Voorhees, Dave, Weltersbach, Marc Simon and Weber, Edward D. (2020) Field surveying of marine recreational fisheries in Norway using a novel spatial sampling frame reveals striking under-coverage of alternative sampling frames. ICES Journal of Marine Science, 77 (6). pp. 2192-2205. ISSN 1054-3139

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Norway has the highest participation rate in marine recreational fisheries (MRF) in Europe, and is popular among marine tourist anglers. Fishing licences are not required for marine recreational anglers, and the complex and long coastline makes on-site surveys a challenge. A novel approach for spatial sampling was developed and tested in on-site surveys, as part of a National study of MRF using multiple sampling frames including a telephone screening survey based on the national telephone directory. Field surveys were conducted in Troms and Hordaland Counties, and in the Oslofjord. We created spatial sampling frames of modified Voronoi polygons with continuous sea-surface area, with clusters of polygons as primary sampling units (PSUs). Interviews of intercepted anglers were obtained quarterly from a stratified sample of PSUs searched by boat. Many anglers interviewed in Troms (63%) and Hordaland (53%) were non-residents, of which 92 and 66% stayed in registered tourist fishing camps, respectively. Most anglers in the Oslofjord were residents, and in the inner Oslofjord, 63% of the resident anglers interviewed on-site were born outside Norway, which was not reflected in the telephone survey. Thus, if only off-site methods were used to map Norwegian MRF, this could lead to biased results in some regions.

Item Type: Article
Additional Information: Funding Information: We thank the Research Council of Norway (project 267808, “Marinforsk”) and the Institute of Marine Research for funding (Coastal Zone Ecosystem Program), and the ICES Working Group on Recreational Fisheries Surveys (WGRFS) for expert input to methods. We thank: Russel Watkins (University of Florida, Gainesville) for GIS help with the creation of spatial sampling frame; the Norwegian Directorate of Fisheries and the Norwegian Coast Guard for providing ship time; Technicians at IMR, Akvaplan-niva, and the Norwegian University of Life Sciences for expertly conducting the field work and follow-up interviews, in the field often operating under challenging conditions because of rough weather; IMR staff who assisted with information material, design of catch diaries, and punching of data; Ole Brauteset for expert advice on the telephone survey; Opinion/Norstat for conducting the telephone screening survey and for recruiting and following up diarists. We also thank reviewers for feedback. Publisher Copyright: © International Council for the Exploration of the Sea 2019. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords: angler fishery,cluster sampling,fishing tourism,marine recreational fisheries,probability-based survey,spatial sampling frame,tourist fishing,voronoi polygons,water-distance,oceanography,ecology, evolution, behavior and systematics,aquatic science,ecology,sdg 14 - life below water ,/dk/atira/pure/subjectarea/asjc/1900/1910
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Depositing User: LivePure Connector
Date Deposited: 25 Nov 2023 03:21
Last Modified: 27 Nov 2023 03:07
DOI: 10.1093/ICESJMS/FSZ108

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