A policy-based framework for the determination of management options to protect vulnerable marine ecosystems under the EU deep-sea access regulations

Vulnerable marine ecosystems (VMEs) are particularly susceptible to bottom-fishing activity as they are easily disturbed and slow to recover. A data-driven approach was developed to provide management options for the protection of VMEs under the European Union “deep-sea access regulations.” A total of two options within two scenarios were developed. The first scenario defined VME closure areas without consideration of fishing activity. Option 1 proposed closures for the protection of VME habitats and likely habitat, while Option 2 also included areas where four types of VME geophysical elements were present. The second scenario additionally considered fishing. This scenario used VME biomass—fishing intensity relationships to identify a threshold where effort of mobile bottom-contact gears was low and unlikely to have caused significant adverse impacts. Achieving a high level of VME protection requires the creation of many closures (> 100), made up of many small (∼50 km2) and fewer larger closures (> 1000 km2). The greatest protection of VMEs will affect approximately 9% of the mobile fleet fishing effort, while closure scenarios that avoid highly fished areas reduce this to around 4–6%. The framework allows managers to choose the level of risk-aversion they wish to apply in protecting VMEs by comparing alternative strategies.

Keyword(s)

bottom fishing, ecosystem-based management, fishing activity, marine protected area, protection, significant adverse impacts, vessel monitoring systems, vulnerable marine ecosystem

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Van denderen P Daniël, Holah Helen, Robson Laura M, Hiddink Jan Geert, Menot Lenaick, Pedreschi Debbi, Kazanidis Georgios, Llope Marcos, Turner Phillip J, Stirling David, Murillo F Javier, Kenny Andrew, Campbell Neil, Allcock A Louise, Braga-Henriques Andreia, González-Irusta Jose M, Johnston Graham, Orejas Covadonga, Serrano Alberto, Xavier Joana R, Hopkins Peter, Kenchington Ellen, Nixon Eugene, Valanko Sebastian, Hoel Alf Hakon (2022). A policy-based framework for the determination of management options to protect vulnerable marine ecosystems under the EU deep-sea access regulations. Ices Journal Of Marine Science. 79 (1). 34-49. https://doi.org/10.1093/icesjms/fsab237, https://archimer.ifremer.fr/doc/00739/85131/

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