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Luoma E, Laurila-Pant M, Altarriba E, Nevalainen L, Helle I, Granhag L, Lehtiniemi M, Srėbalienė G, Olenin S, Lehikoinen A. A multi-criteria decision analysis model for ship biofouling management in the Baltic Sea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158316. [PMID: 36037884 DOI: 10.1016/j.scitotenv.2022.158316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/16/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Biofouling of ship hulls form a vector for the introduction of non-indigenous organisms worldwide. Through increasing friction, the organisms attached to ships' hulls increase the fuel consumption, leading to both higher fuel costs and air emissions. At the same time, ship biofouling management causes both ecological risks and monetary costs. All these aspects should be considered case-specifically in the search of sustainable management strategies. Applying Bayesian networks, we developed a multi-criteria decision analysis model to compare biofouling management strategies in the Baltic Sea, given the characteristics of a ship, its operating profile and operational environment, considering the comprehensive environmental impact and the monetary costs. The model is demonstrated for three scenarios (SC1-3) and sub-scenarios (A-C), comparing the alternative biofouling management strategies in relation to NIS (non-indigenous species) introduction risk, eco-toxicological risk due to biocidal coating, carbon dioxide emissions and costs related to fuel consumption, in-water cleaning and hull coating. The scenarios demonstrate that by the careful consideration of the hull fouling management strategy, both money and environment can be saved. We suggest biocidal-free coating with a regular in-water cleaning using a capture system is generally the lowest-risk option. The best biocidal-free coating type and the optimal in-water cleaning interval should be evaluated case-specifically, though. In some cases, however, biocidal coating remains a justifiable option.
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Affiliation(s)
- Emilia Luoma
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland; Kotka Maritime Research Centre, Kotka, Finland; Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Finland.
| | - Mirka Laurila-Pant
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland; Kotka Maritime Research Centre, Kotka, Finland; Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Finland
| | - Elias Altarriba
- South-Eastern Finland University of Applied Sciences (Xamk), Logistics and Seafaring, Kotka, Finland; Kotka Maritime Research Centre, Kotka, Finland
| | - Lauri Nevalainen
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland; Kotka Maritime Research Centre, Kotka, Finland; Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Finland
| | - Inari Helle
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland; Kotka Maritime Research Centre, Kotka, Finland; Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Finland; Natural Resources Institute Finland (Luke), Helsinki, Finland
| | - Lena Granhag
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Maiju Lehtiniemi
- Finnish Environment Institute, Marine Research Centre, Helsinki, Finland
| | - Greta Srėbalienė
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - Sergej Olenin
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - Annukka Lehikoinen
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland; Kotka Maritime Research Centre, Kotka, Finland; Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Finland
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