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Ballast water risk assessment : principles, processes, and methods
journal contribution
posted on 2017-12-06, 00:00 authored by S Barry, K Hayes, Chad HewittChad Hewitt, H Behrens, E Dragsund, S BakkeTwo methods of assessing the risk of species introduction by ballast water are discussed, species-specific and environmental similarity assessments, each for alignment with four proposed principles of risk-based resource management: (i) society accepts that low risk scenarios exist; (ii) risk assessment is capable of identifying low risk scenarios; (iii) risk mitigation strategies exist; and (iv) mitigation costs are less than the cost of performing risk assessment. All four principles were met in some circumstances for both methods. Species-specific ballast water risk assessment is best suited to situations where the assessment can be restricted to a limited set of harmful species on journeys within bioregions where ballast water is a small component of natural genetic exchange.Environmental similarity risk assessment is appropriate for journeys that start and end in locations which have very little or no natural genetic exchange, such as journeys between non-contiguous bioregions. Because a large number of species are not assessed individually, environmental match assessments necessarily will be restricted to fundamental variables such as temperature and salinity. A number of bioregion classifications have been identified in the world’s oceans, some of which at a scale that may be appropriate for ballast water management. The suitability of any particular classification, however, needs further examination.
Funding
Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)
History
Volume
65Issue
2Start Page
121End Page
131Number of Pages
11eISSN
1095-9289ISSN
1054-3139Location
United KingdomPublisher
Oxford University PressPublisher DOI
Full Text URL
Language
en-ausPeer Reviewed
- Yes
Open Access
- No
External Author Affiliations
Australian Maritime College; Marine Research; Mathematical and Information Sciences; Norske Veritas (Organization); TBA Research Institute;Era Eligible
- Yes