Blacklip abalone central 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 central zone is provided below.

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

Annual catch

Sector

Estimated Victorian catch

Commercial (2015/16 fishing year)

307.7 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 tonnes 

Estimated total

≈ 310 tonnes

Stock status

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

  1. Stock status: classification of the biological status of blacklip abalone in the central zone  as at 2013, taken from the national Status of Key Australian Fish Stocks (SAFS) report 2014.
    Read more 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 central 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:

overfished

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 central zone has been progressively reduced in the last decade from 620 tonnes in 2005-06 to 280.2 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 recruitment overfished. 

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 at, or below, the biological limit where the stock is considered to be recruitment overfished

Fishing pressure assessment

Based on this evidence, SAFS 2014 concluded that the current level of  fishing pressure has reduced spawning biomass to a level where the average level of recruitment is impacted (i.e. recruitment overfished).

Management measures are in place, but are unlikely to change the overall status of this stock in the short term.

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.