Blacklip abalone eastern zone

Image from Status of Key Australian Fish Stocks 2014

Distribution

Blacklip abalone are found throughout south-eastern Australia, from Broughton Island in the north, to the Great Australian Bight in the west.

Abalone are broadly distributed throughout Victorian near-shore coastal marine waters.

Stock structure

There are numerous independent populations of blacklip abalone within this area. For practical reasons, the status of blacklip abalone was assessed on the basis of management units (i.e. fishery zones) rather than biological stocks in the national Status of Key Australian Fish Stocks report 2014.

There are three abalone fishery zones in Victoria: western, central and eastern. Information on the catch and status of blacklip abalone in the Victorian eastern zone is provided below.

Read more about the status of blacklip abalone in the Victorian central and western zones.

Annual catch

Sector

Estimated Victorian catch

Commercial (2015/16 fishing year)

376 tonnes

Recreational (statewide estimate from 2000/01 national survey; may include greenlip abalone)

 ≈ 3 tonnes (10,355 abalone of average weight 300 grams)

Indigenous (i.e. 2015/16 customary fishing permits) 

≈ 0.03 tonnes  (80-100 abalone)

Estimated total

≈ 380 tonnes

Stock status

The table below summarises and explains the status and management of blacklip abalone in the Victorian eastern zone based on: 

  1. Stock status: classification of the biological status of blacklip abalone in the eastern zone as at 2013, taken from the national Status of Key Australian Fish Stocks (SAFS) report 2014.
    Read more here about the SAFS assessment approach and classification system.
  2. Management settings: overview of current management arrangements in Victorian waters, including any recent changes that may affect stock status.
  3. Risk management category: The Victorian Fisheries Authority's overall, qualitative assessment of current risk to stock status in Victorian waters taking into account management arrangements, based on the best information currently available:

    Red Red - current management measures may not be sufficient to prevent stock depletion
    Amber Amber - current management measures expected to mitigate risk of stock depletion
    Green Green - stock status not of concern under current management

Stock status is based only on sustainability, while management settings and risk management category also consider the steps taken to address stock status. The stock status classification, management settings and risk management category are all at the scale of the Victorian eastern zone.

Management settings are also influenced by social and economic factors, and can take some time to affect a stock's status. This can depend on biological and environmental factors as well as the type and level of management changes implemented.

Stock status (2013 data)

Key management settings

Risk management category

Classification:

transitional - depleting

Commercial harvest is predominantly managed by limited entry licensing, a total allowable commercial catch and restrictions on size, gear and fishing times.  Recreational fishers are subject to size, gear and bag limits, and some restrictions on fishing times and locations.

The total allowable commercial catch of blacklip abalone in the eastern zone has been progressively reduced in the last decade from 489 tonnes in 2005-06 to 363 tonnes for the 2016-17 quota season.

Read more about the fishing methods and rules for blacklip abalone in Victoria.

Amber

Evidence:

Collectively, the following data provide evidence that this stock is transitional - depleting

The management steps taken mitigate the risk of further stock depletion but ongoing monitoring is required.

Basis for stock status classification (from SAFS 2014)

Biomass assessment

Based on this evidence, SAFS 2014 concluded that biomass was depleting, but not likely to be recruitment overfished at present.

Fishing pressure assessment

Based on this evidence, SAFS 2014 concluded that the stock was not yet likely to be recruitment overfished, but that fishing pressure was likely to cause it to become recruitment  overfished.

Management measures are in place, however they have not yet led to measurable improvements.

Read more about the assessment of Blacklip abalone stock status as at 2013 in the national Status of Key Australian Fish Stocks (SAFS) report 2014.

More information

Read more on our Commercial abalone fishery page.