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Risk assessment in ballast water management
David, M.; Gollasch, S.; Leppäkoski, E.; Hewitt, C.L. (2015). Risk assessment in ballast water management, in: David, M. et al. Global maritime transport and ballast water management: Issues and solutions. Invading Nature - Springer Series in Invasion Ecology, 8: pp. 133-169. https://dx.doi.org/10.1007/978-94-017-9367-4_7
In: David, M.; Gollasch, S. (Ed.) (2015). Global maritime transport and ballast water management: Issues and solutions. Invading Nature - Springer Series in Invasion Ecology, 8. Springer: Dordrecht. ISBN 978-94-017-9366-7. XV, 306 pp. https://dx.doi.org/10.1007/978-94-017-9367-4, meer
In: Drake, J.A. (Ed.) Invading Nature - Springer Series in Invasion Ecology. Springer Science+Business Media. ISSN 1874-7809, meer
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| Trefwoorden |
Risk assessment
Marien/Kust |
| Author keywords |
Risk assessment • Selective ballast water management • Exemptions • Environmental matching method • Species specific method • Biogeographical method • Target species |
| Auteurs | | Top |
- David, M.
- Gollasch, S., meer
- Leppäkoski, E.
- Hewitt, C.L.
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| Abstract |
The risk assessment (RA) developed according to the BWM Convention is the most recently agreed global RA for bioinvasions. It was developed to enable a selective ballast water management (BWM) approach according to the BWM Convention and the G7 Guidelines. It describes three different BWM RA methods, “environmental matching”, “species’ biogeographical” and “species-specific” RA. The environmental matching RA between the areas of ballast water origin and discharge considers non-biological parameters as surrogates for the species survival potential in the new environment. The species’ biogeographical RA identifies species with overlapping distribution in the donor and recipient ports and biogeographic regions which is taken as direct indications of the similarity of the environmental conditions and hence species survival in the new environment. The species-specific RA is focused on life history information and physiological tolerances to identify a species’ physiological limits estimating its potential to survive or complete its life cycle in the new environment and considers target species. There are two fundamentally different RA approaches under the BWM Convention, the selective and the blanket approach. A blanket approach means that all ships intending to discharge ballast water in a port are required to conduct BWM. The selective approach means that appropriate BWM measures are required depending on different risk levels posed by the intended ballast water discharge. In one instance ships may be exempted from BWM requirements provided that the risk level of a ballast water discharge is acceptable. In another instance, if the risk is identified as (very) high, ships may be required to take additional measures based on the G13 Guidelines. The risk level is a RA result and input data reliability is of key importance. The chapter provides detailed step-by-step RA models for exemptions and for selective BWM measures, ready to be used by administration. |
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