Trawl selectivity dataset - LowFlow codend

<p dir="ltr">This dataset contains the raw length measurements of four species caught in a paired gears experiment testing a LowFlow trawl codend concept against a non-selective Control trawl. The LowFlow codend included tarpaulin elements to reduce the flow velocity and facilitate species escapement through a gap in the net. Two configurations of the LowFlow codend were tested against the same Control: one configuration with a radial escape gap of 1.5 m and one with a smaller escape gap of 1.0 m. The aim of the study was to investigate species-specific differences in escapement rate, which could relate to flow refuging behaviours. Species ID follows international standards with FAO 3-letter codes: NEP = <i>Nephrops norvegicus</i>, COD = <i>Gadus morhua</i>, HAD = <i>Melanogrammus aeglefinus</i>, WHG = <i>Merlangius merlangus</i>.</p><p dir="ltr">The dataset was collected as part of the project MatRedEx (1) funded by the European Maritime and Fisheries Fund (EMFF) and the Danish Fisheries Agency.</p><p dir="ltr">All information regarding gears, fishing area and fishing dynamics, as well as results for the three Gadoids species, can be found here: Melli, V., O'Neill, F.G., Breddermann, K., Kofoed, J.P., Karlsen J.D. (2025). Enhancing bycatch escape in trawl fisheries through flow manipulation: a study on Gadoids. Canadian Journal of Fisheries and Aquatic Sciences. https://doi.org/10.1139/cjfas-2025-0015</p><p dir="ltr">Reference:</p><p dir="ltr">1. Karlsen, Junita Diana, Krag, Ludvig Ahm, O'Neill, Barry, Andersen, Niels Gerner, Melli, Valentina. Innovative materials to reduce fuel emission and increase cod exits. <a href="https://orbit.dtu.dk/en/projects/innovative-materials-to-reduce-fuel-emission-and-increase-cod-exi" target="_blank">https://orbit.dtu.dk/en/projects/innovative-materials-to-reduce-fuel-emission-and-increase-cod-exi</a></p>