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Acute impacts of bottom trawl gears on benthic metabolism and nutrient cycling

(2019) ICES JOURNAL OF MARINE SCIENCE. 76(6). p.1917-1930
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Abstract
Research on the environmental impacts of bottom fishing gears has focused mainly on structural characteristics of benthic habitats such as faunal composition and the physical features of the seafloor. This study focuses more on functional characteristics by addressing the biogeochemical consequences associated with tickler chain beam trawl and electric PulseWing trawl gears. In June 2017, professional fishermen trawled experimental transects with both types of gears in the Frisian Front area of the North Sea. Box core sediment samples and in situ landers were used to evaluate biogeochemical fluxes and sediment characteristics in untrawled and trawled areas (samples taken 3.5–70 h after fishing). A reduction of sedimentary chlorophyll a was observed, which was larger following tickler chain (83%) compared to PulseWing trawling (43%). This displacement of surface material caused significant decreases in the sediment oxygen consumption in tickler chain (41%) and PulseWing trawled samples (33%) along with a deeper penetration of oxygen in the sediment (tickler chain: 3.78 mm, PulseWing: 3.17 mm) compared to untrawled areas (2.27 mm). Our research implies that bottom trawl disturbance can lead to immediate declines in benthic community metabolism, with tickler chain trawling exhibiting more prominent alterations than PulseWing trawling on benthic biogeochemical processes.
Keywords
beam trawling, biogeochemistry, ecosystem functioning, Frisian Front, nutrients, organic carbon, oxygen dynamics, pulse trawling, SUBTERRANEA MONTAGU THALASSINIDEA, DISSOLVED INORGANIC CARBON, SOUTHERN NORTH-SEA, ORGANIC-MATTER, SEDIMENT RESUSPENSION, CONTINENTAL-SHELF, GLOBAL ANALYSIS, FRISIAN FRONT, OXYGEN-UPTAKE, FLUXES

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MLA
Tiano, Justin, et al. “Acute Impacts of Bottom Trawl Gears on Benthic Metabolism and Nutrient Cycling.” ICES JOURNAL OF MARINE SCIENCE, vol. 76, no. 6, 2019, pp. 1917–30, doi:10.1093/icesjms/fsz060.
APA
Tiano, J., Bergman, M. J. N., Witbaard, R., van Rijswijk, P., Tramper, A., van Oevelen, D., & Soetaert, K. (2019). Acute impacts of bottom trawl gears on benthic metabolism and nutrient cycling. ICES JOURNAL OF MARINE SCIENCE, 76(6), 1917–1930. https://doi.org/10.1093/icesjms/fsz060
Chicago author-date
Tiano, Justin, Magda J. N. Bergman, Rob Witbaard, Pieter van Rijswijk, Anton Tramper, Dick van Oevelen, and Karline Soetaert. 2019. “Acute Impacts of Bottom Trawl Gears on Benthic Metabolism and Nutrient Cycling.” ICES JOURNAL OF MARINE SCIENCE 76 (6): 1917–30. https://doi.org/10.1093/icesjms/fsz060.
Chicago author-date (all authors)
Tiano, Justin, Magda J. N. Bergman, Rob Witbaard, Pieter van Rijswijk, Anton Tramper, Dick van Oevelen, and Karline Soetaert. 2019. “Acute Impacts of Bottom Trawl Gears on Benthic Metabolism and Nutrient Cycling.” ICES JOURNAL OF MARINE SCIENCE 76 (6): 1917–1930. doi:10.1093/icesjms/fsz060.
Vancouver
1.
Tiano J, Bergman MJN, Witbaard R, van Rijswijk P, Tramper A, van Oevelen D, et al. Acute impacts of bottom trawl gears on benthic metabolism and nutrient cycling. ICES JOURNAL OF MARINE SCIENCE. 2019;76(6):1917–30.
IEEE
[1]
J. Tiano et al., “Acute impacts of bottom trawl gears on benthic metabolism and nutrient cycling,” ICES JOURNAL OF MARINE SCIENCE, vol. 76, no. 6, pp. 1917–1930, 2019.
@article{8677700,
  abstract     = {Research on the environmental impacts of bottom fishing gears has focused mainly on structural characteristics of benthic habitats such as faunal composition and the physical features of the seafloor. This study focuses more on functional characteristics by addressing the biogeochemical consequences associated with tickler chain beam trawl and electric PulseWing trawl gears. In June 2017, professional fishermen trawled experimental transects with both types of gears in the Frisian Front area of the North Sea. Box core sediment samples and in situ landers were used to evaluate biogeochemical fluxes and sediment characteristics in untrawled and trawled areas (samples taken 3.5–70 h after fishing). A reduction of sedimentary chlorophyll a was observed, which was larger following tickler chain (83%) compared to PulseWing trawling (43%). This displacement of surface material caused significant decreases in the sediment oxygen consumption in tickler chain (41%) and PulseWing trawled samples (33%) along with a deeper penetration of oxygen in the sediment (tickler chain: 3.78 mm, PulseWing: 3.17 mm) compared to untrawled areas (2.27 mm). Our research implies that bottom trawl disturbance can lead to immediate declines in benthic community metabolism, with tickler chain trawling exhibiting more prominent alterations than PulseWing trawling on benthic biogeochemical processes.},
  author       = {Tiano, Justin and Bergman, Magda J. N. and Witbaard, Rob and van Rijswijk, Pieter and Tramper, Anton and van Oevelen, Dick and Soetaert, Karline},
  issn         = {1054-3139},
  journal      = {ICES JOURNAL OF MARINE SCIENCE},
  keywords     = {beam trawling,biogeochemistry,ecosystem functioning,Frisian Front,nutrients,organic carbon,oxygen dynamics,pulse trawling,SUBTERRANEA MONTAGU THALASSINIDEA,DISSOLVED INORGANIC CARBON,SOUTHERN NORTH-SEA,ORGANIC-MATTER,SEDIMENT RESUSPENSION,CONTINENTAL-SHELF,GLOBAL ANALYSIS,FRISIAN FRONT,OXYGEN-UPTAKE,FLUXES},
  language     = {eng},
  number       = {6},
  pages        = {1917--1930},
  title        = {Acute impacts of bottom trawl gears on benthic metabolism and nutrient cycling},
  url          = {http://dx.doi.org/10.1093/icesjms/fsz060},
  volume       = {76},
  year         = {2019},
}

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