Environmental benefits of leaving offshore infrastructure in the ocean

Ashley M. Fowler*, A.M. Jørgensen, Jon C. Svendsen, Peter I. Macreadie, Daniel O.B. Jones, Arjen R. Boon, David J. Booth, Robin Brabant, Emily Callahan, Jeremy T. Claisse, Thomas G. Dahlgren, Steven Degraer, Quenton R. Dokken, Andrew B. Gill, David G. Johns, Robert J. Leewis, Han J. Lindeboom, Olof Linden, Roel May, Albertinka J. MurkGeir Ottersen, Donna M. Schroeder, Sunil M. Shastri, Jonas Teilmann, Victoria Todd, Gert Van Hoey, Jan Vanaverbeke, Joop W.P. Coolen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

30 Citations (Scopus)

Abstract

The removal of thousands of structures associated with oil and gas development from the world’s oceans is well underway, yet the environmental impacts of this decommissioning practice remain unknown. Similar impacts will be associated with the eventual removal of offshore wind turbines. We conducted a global survey of environmental experts to guide best decommissioning practices in the North Sea, a region with a substantial removal burden. In contrast to current regulations, 94.7% of experts (36 out of 38) agreed that a more flexible case-by- case approach to decommissioning could benefit the North Sea environment. Partial removal options were considered to deliver better environmental outcomes than complete removal for platforms, but both approaches were equally supported for wind turbines. Key considerations identified for
decommissioning were biodiversity enhancement, provision of reef habitat, and protection from bottom trawling, all of which are negatively affected by complete removal. We provide recommendations to guide the revision of offshore decommissioning policy, including a temporary suspension of obligatory removal.
Original languageEnglish
Pages (from-to)571-578
JournalFrontiers in Ecology and the Environment
Volume16
Issue number10
Early online date3 Jul 2018
DOIs
Publication statusPublished - Dec 2018

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