Document of bibliographic reference 393208

BibliographicReference record

Type

Bibliographic resource

Type of document

Reports

BibLvlCode

M

Title

Marine invasive species literature review. Prepared for the WAMSI Westport Marine Science Program

Abstract

Invasive marine species introduced anthropogenically into new marine areas are a worldwide issue. This literature review of invasive marine species in Cockburn Sound and Owen Anchorage provides a baseline for understanding the potential risks posed by the Westport Project. To ensure no species were missed, the analysis included the Fremantle marine area from Cottesloe to Cockburn Sound and the Swan River. Seventy introduced species were recorded that may have established populations, 29 of which have been found in Cockburn Sound and/or Owen Anchorage. Four of these species are considered noxious in Cockburn Sound/Owen Anchorage by DPIRD. Two are planktonic: the toxic dinoflagellates Alexandrium catenella and A. minutum have been recorded in barely detectable numbers. Two benthic species, the alga Codium fragile fragile and the ascidian Didemnum vexillum are actively monitored by DPIRD, along with D. perlucidum. The potential effects of the three species are discussed. Invasive marine species are concentrated on artificial surfaces. Eco-engineering is a new field that attempts to ameliorate invasive marine species, but there have been mixed results to date. As Cockburn Sound is relatively small, it would be difficult to prevent these species from colonising new Westport structures. The goal should be to prevent new invasive marine species from being introduced to Westport through ballast water or biofouling. Rigorous quarantine procedures are in place for both risk factors, and vessels mobilising to Westport should proactively adhere to all quarantine requirements. The risk of introducing marine pest species will be greatest during construction, but experience during the construction boom in the Pilbara demonstrated the issue is manageable. During operations most vessels arriving at Westport would previously have gone to Fremantle Inner Harbour, so the increased risk results only from increased numbers of vessels or changes in where vessels are arriving from

Bibliographic citation

Wells, F. (2024). Marine invasive species literature review. Prepared for the WAMSI Westport Marine Science Program. Western Australian Marine Science Institution: Perth. 54 pp.

Topic

Marine

Access rights

open access

Is accessible for free

true