Assessing the impacts of seabed mineral extraction in the deep sea and coastal marine environments : Current methods and recommendations for environmental risk assessment

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Kaikkonen , L , Venesjärvi , R , Nygård , H & Kuikka , S 2018 , ' Assessing the impacts of seabed mineral extraction in the deep sea and coastal marine environments : Current methods and recommendations for environmental risk assessment ' , Marine Pollution Bulletin , vol. 135 , pp. 1183-1197 . https://doi.org/10.1016/j.marpolbul.2018.08.055

Title: Assessing the impacts of seabed mineral extraction in the deep sea and coastal marine environments : Current methods and recommendations for environmental risk assessment
Author: Kaikkonen, Laura; Venesjärvi, Riikka; Nygård, Henrik; Kuikka, Sakari
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Natural Resources Institute Finland (LUKE)
University of Helsinki, Ecosystems and Environment Research Programme
Date: 2018-10
Language: eng
Number of pages: 15
Belongs to series: Marine Pollution Bulletin
ISSN: 0025-326X
URI: http://hdl.handle.net/10138/260968
Abstract: Mineral extraction from the seabed has experienced a recent surge of interest from both the mining industry and marine scientists. While improved methods of geological investigation have enabled the mapping of new seafloor mineral reserves, the ecological impacts of mining in both the deep sea and the shallow seabed are poorly known. This paper presents a synthesis of the empirical evidence from experimental seabed mining and parallel industries to infer the effects of seabed mineral extraction on marine ecosystems, focusing on polymetallic nodules and ferromanganese concretions. We use a problem-structuring framework to evaluate causal relationships between pressures caused by nodule extraction and the associated changes in marine ecosystems. To ensure that the rationale behind impact assessments is clear, we propose that future impact assessments use pressure-specific expert elicitation. We further discuss integrating ecosystem services in the impact assessments and the implications of current methods for environmental risk assessments.
Subject: Ecological impact assessment
Polymetallic nodules
Marine resource governance
Environmental risk assessment
Seabed mining
DAPSI(W)R(M) framework
PARTICLE-SIZE COMPOSITION
EASTERN ENGLISH-CHANNEL
FLOOR MASSIVE SULFIDES
AGGREGATE EXTRACTION
FERROMANGANESE CONCRETIONS
GRAVEL EXTRACTION
ECOSYSTEM SERVICES
NORTH-SEA
SUSPENDED SEDIMENT
SAND EXTRACTION
1172 Environmental sciences
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