Articles | Volume 19, issue 10
Biogeosciences, 19, 2583–2598, 2022
https://doi.org/10.5194/bg-19-2583-2022

Special issue: Towards an understanding and assessment of human impact on...

Biogeosciences, 19, 2583–2598, 2022
https://doi.org/10.5194/bg-19-2583-2022
Research article
20 May 2022
Research article | 20 May 2022

Trawling effects on biogeochemical processes are mediated by fauna in high-energy biogenic-reef-inhabited coastal sediments

Justin C. Tiano et al.

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Cited articles

Allen, J. I. and Clarke, K. R.: Effects of demersal trawling on ecosystem functioning in the North Sea: A modelling study, Mar. Ecol. Prog. Ser., 336, 63–75, https://doi.org/10.3354/meps336063, 2007. 
Aller, R. C.: Benthic fauna and biogeochemical processes in marine sediments: the role of burrow structures, in: Nitrogen cycling in coastal marine environments, edited by: Blackburn, T. H. and Sørensen, J., Scope, Chichester, 301–338, 1988. 
Amaro, T. P. F., Duineveld, G. C. A., Bergman, M. J. N., Witbaard, R., and Scheffer, M.: The consequences of changes in abundance of Callianassa subterranea and Amphiura filiformis on sediment erosion at the Frisian Front (south-eastern North Sea), Hydrobiologia, 589, 273–285, https://doi.org/10.1007/s10750-007-0750-2, 2007. 
Bates, D., Mächler, M., Bolker, B. M., and Walker, S. C.: Fitting linear mixed-effects models using lme4, J. Stat. Softw., 67, 1–48, https://doi.org/10.18637/jss.v067.i01, 2015. 
Bolam, S. G., Coggan, R. C., Eggleton, J., Diesing, M., and Stephens, D.: Sensitivity of macrobenthic secondary production to trawling in the English sector of the Greater North Sea: A biological trait approach, J. Sea Res., 85, 162–177, https://doi.org/10.1016/j.seares.2013.05.003, 2014. 
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Short summary
This study gives an assessment of bottom trawling on physical, chemical, and biological characteristics in a location known for its strong currents and variable habitats. Although trawl gears only removed the top 1 cm of the seabed surface, impacts on reef-building tubeworms significantly decreased carbon and nutrient cycling. Lighter trawls slightly reduced the impact on fauna and nutrients. Tubeworms were strongly linked to biogeochemical and faunal aspects before but not after trawling.
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