University of Tasmania
Browse
Barry_et_al_ICES_JMR_Ballast_Risk.pdf (329.8 kB)

Ballast water risk assessment: principles, processes and methods

Download (329.8 kB)
journal contribution
posted on 2023-05-16, 21:43 authored by Barry, SC, Hayes, KR, Hewitt, CL, Behrens, HL, Dragsund, E, Bakke, SM
Two 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.

History

Publication title

I C E S Journal of Marine Science

Volume

65

Pagination

121-131

ISSN

1054-3139

Department/School

Institute for Marine and Antarctic Studies

Publisher

Oxford University Press

Place of publication

24-28 Oval Rd, London, England, Nw1 7Dx

Repository Status

  • Restricted

Socio-economic Objectives

Trade and environment

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC