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Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl. / Depestele, Jochen; Degrendele, Koen; Esmaeili, Moosa; Ivanovic, Ana; Kröger, Silke; O'neill, Finnbar G.; Parker, Ruth; Polet, Hans; Roche, Marc; Teal, Lorna R.; Vanelslander, Bart; Rijnsdorp, Adriaan.

In: ICES Journal of Marine Science, 2018.

Research output: Contribution to journalA1: Web of Science-articleResearchpeer-review

Harvard

Depestele, J, Degrendele, K, Esmaeili, M, Ivanovic, A, Kröger, S, O'neill, FG, Parker, R, Polet, H, Roche, M, Teal, LR, Vanelslander, B & Rijnsdorp, A 2018, 'Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl.' ICES Journal of Marine Science. https://doi.org/10.1093/icesjms/fsy124

APA

Depestele, J., Degrendele, K., Esmaeili, M., Ivanovic, A., Kröger, S., O'neill, F. G., ... Rijnsdorp, A. (2018). Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl. ICES Journal of Marine Science. https://doi.org/10.1093/icesjms/fsy124

Vancouver

Author

Depestele, Jochen ; Degrendele, Koen ; Esmaeili, Moosa ; Ivanovic, Ana ; Kröger, Silke ; O'neill, Finnbar G. ; Parker, Ruth ; Polet, Hans ; Roche, Marc ; Teal, Lorna R. ; Vanelslander, Bart ; Rijnsdorp, Adriaan. / Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl. In: ICES Journal of Marine Science. 2018.

Bibtex

@article{33680804bdf54c628bbac48b2764c431,
title = "Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl.",
abstract = "Tickler-chain SumWing and electrode-fitted PulseWing trawls were compared to assess seabed impacts. Multi-beam echo sounder (MBES) bathymetry confirmed that the SumWing trawl tracks were consistently and uniformly deepened to 1.5 cm depth in contrast to 0.7 cm following PulseWing trawling. MBES backscatter strength analysis showed that SumWing trawls (3.11 dB) flattened seabed roughness significantly more than PulseWing trawls (2.37 dB). Sediment Profile Imagery (SPI) showed that SumWing trawls (mean, SD) homogenised the sediment deeper (3.4 cm, 0.9 cm) and removed more of the oxidised layer than PulseWing trawls (1 cm, 0.8 cm). The reduced PulseWing trawling impacts allowed a faster re-establishment of the oxidised layer and micro-topography. Particle size analysis suggested that SumWing trawls injected finer particles into the deeper sediment layers (∼4 cm depth), while PulseWing trawling only caused coarsening of the top layers (winnowing effect). Total penetration depth (mean, SD) of the SumWing trawls (4.1 cm, 0.9 cm) and PulseWing trawls (1.8 cm, 0.8 cm) was estimated by the depth of the disturbance layer and the layer of mobilized sediment (SumWing = 0.7 cm; PulseWing trawl = 0.8 cm). PulseWing trawls reduced most of the mechanical seabed impacts compared to SumWing trawls for this substrate and area characteristics.",
author = "Jochen Depestele and Koen Degrendele and Moosa Esmaeili and Ana Ivanovic and Silke Kr{\"o}ger and O'neill, {Finnbar G.} and Ruth Parker and Hans Polet and Marc Roche and Teal, {Lorna R.} and Bart Vanelslander and Adriaan Rijnsdorp",
year = "2018",
doi = "https://doi.org/10.1093/icesjms/fsy124",
language = "English",
journal = "ICES Journal of Marine Science",
issn = "1095-9289",
publisher = "Oxford Univ Press",

}

RIS

TY - JOUR

T1 - Comparison of mechanical disturbance in soft sediments due to tickler-chain SumWing trawl vs. electro-fitted PulseWing trawl.

AU - Depestele, Jochen

AU - Degrendele, Koen

AU - Esmaeili, Moosa

AU - Ivanovic, Ana

AU - Kröger, Silke

AU - O'neill, Finnbar G.

AU - Parker, Ruth

AU - Polet, Hans

AU - Roche, Marc

AU - Teal, Lorna R.

AU - Vanelslander, Bart

AU - Rijnsdorp, Adriaan

PY - 2018

Y1 - 2018

N2 - Tickler-chain SumWing and electrode-fitted PulseWing trawls were compared to assess seabed impacts. Multi-beam echo sounder (MBES) bathymetry confirmed that the SumWing trawl tracks were consistently and uniformly deepened to 1.5 cm depth in contrast to 0.7 cm following PulseWing trawling. MBES backscatter strength analysis showed that SumWing trawls (3.11 dB) flattened seabed roughness significantly more than PulseWing trawls (2.37 dB). Sediment Profile Imagery (SPI) showed that SumWing trawls (mean, SD) homogenised the sediment deeper (3.4 cm, 0.9 cm) and removed more of the oxidised layer than PulseWing trawls (1 cm, 0.8 cm). The reduced PulseWing trawling impacts allowed a faster re-establishment of the oxidised layer and micro-topography. Particle size analysis suggested that SumWing trawls injected finer particles into the deeper sediment layers (∼4 cm depth), while PulseWing trawling only caused coarsening of the top layers (winnowing effect). Total penetration depth (mean, SD) of the SumWing trawls (4.1 cm, 0.9 cm) and PulseWing trawls (1.8 cm, 0.8 cm) was estimated by the depth of the disturbance layer and the layer of mobilized sediment (SumWing = 0.7 cm; PulseWing trawl = 0.8 cm). PulseWing trawls reduced most of the mechanical seabed impacts compared to SumWing trawls for this substrate and area characteristics.

AB - Tickler-chain SumWing and electrode-fitted PulseWing trawls were compared to assess seabed impacts. Multi-beam echo sounder (MBES) bathymetry confirmed that the SumWing trawl tracks were consistently and uniformly deepened to 1.5 cm depth in contrast to 0.7 cm following PulseWing trawling. MBES backscatter strength analysis showed that SumWing trawls (3.11 dB) flattened seabed roughness significantly more than PulseWing trawls (2.37 dB). Sediment Profile Imagery (SPI) showed that SumWing trawls (mean, SD) homogenised the sediment deeper (3.4 cm, 0.9 cm) and removed more of the oxidised layer than PulseWing trawls (1 cm, 0.8 cm). The reduced PulseWing trawling impacts allowed a faster re-establishment of the oxidised layer and micro-topography. Particle size analysis suggested that SumWing trawls injected finer particles into the deeper sediment layers (∼4 cm depth), while PulseWing trawling only caused coarsening of the top layers (winnowing effect). Total penetration depth (mean, SD) of the SumWing trawls (4.1 cm, 0.9 cm) and PulseWing trawls (1.8 cm, 0.8 cm) was estimated by the depth of the disturbance layer and the layer of mobilized sediment (SumWing = 0.7 cm; PulseWing trawl = 0.8 cm). PulseWing trawls reduced most of the mechanical seabed impacts compared to SumWing trawls for this substrate and area characteristics.

U2 - https://doi.org/10.1093/icesjms/fsy124

DO - https://doi.org/10.1093/icesjms/fsy124

M3 - A1: Web of Science-article

JO - ICES Journal of Marine Science

JF - ICES Journal of Marine Science

SN - 1095-9289

ER -