Gear performance and catch process of a commercial Danish anchor seine

Thomas Noack*, Daniel Stepputtis, Niels Madsen, Kai Wieland, Stefanie Haase, Ludvig Ahm Krag

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The Danish anchor seine is an efficient type of active fishing gear used globally. Knowledge of the gear and its operational performance is limited, but needed to ensure efficient fishing and appropriate management. During this study, a combination of GPS loggers, depth loggers, and cameras, were utilized to collect quantitative information about the geometry of the seine net and seine ropes during all stages of the fishing process, and to identify when fish enter the seine net. Measurements of the horizontal and vertical openings of the seine net indicated that gear geometry changed continuously during the fishing process. Underwater recordings from the net revealed that the majority of fish entered the seine net within the last quarter of the fishing period, and that fishermen are able to control the timing of increasing the retrieval speed to prevent losing fish late in the fishing process. Underwater recordings of the seine rope provided qualitative results indicating that interactions with the sea bed are relatively minor in nature.
Original languageEnglish
JournalFisheries Research
Volume211
Pages (from-to)204-211
ISSN0165-7836
DOIs
Publication statusPublished - 2019

Keywords

  • Demersal fishery
  • Fish behavior
  • Fishing gear geometry
  • Selectivity
  • Swept area

Cite this

Noack, Thomas ; Stepputtis, Daniel ; Madsen, Niels ; Wieland, Kai ; Haase, Stefanie ; Krag, Ludvig Ahm. / Gear performance and catch process of a commercial Danish anchor seine. In: Fisheries Research. 2019 ; Vol. 211. pp. 204-211.
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author = "Thomas Noack and Daniel Stepputtis and Niels Madsen and Kai Wieland and Stefanie Haase and Krag, {Ludvig Ahm}",
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Gear performance and catch process of a commercial Danish anchor seine. / Noack, Thomas; Stepputtis, Daniel; Madsen, Niels; Wieland, Kai; Haase, Stefanie; Krag, Ludvig Ahm.

In: Fisheries Research, Vol. 211, 2019, p. 204-211.

Research output: Contribution to journalJournal articleResearchpeer-review

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AU - Noack, Thomas

AU - Stepputtis, Daniel

AU - Madsen, Niels

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AU - Haase, Stefanie

AU - Krag, Ludvig Ahm

PY - 2019

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AB - The Danish anchor seine is an efficient type of active fishing gear used globally. Knowledge of the gear and its operational performance is limited, but needed to ensure efficient fishing and appropriate management. During this study, a combination of GPS loggers, depth loggers, and cameras, were utilized to collect quantitative information about the geometry of the seine net and seine ropes during all stages of the fishing process, and to identify when fish enter the seine net. Measurements of the horizontal and vertical openings of the seine net indicated that gear geometry changed continuously during the fishing process. Underwater recordings from the net revealed that the majority of fish entered the seine net within the last quarter of the fishing period, and that fishermen are able to control the timing of increasing the retrieval speed to prevent losing fish late in the fishing process. Underwater recordings of the seine rope provided qualitative results indicating that interactions with the sea bed are relatively minor in nature.

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