Greenlip abalone

Image from Status of Key Australian Fish Stocks 2014

Distribution

Greenlip abalone are distributed across southern Australia as far eastwards as Wilsons Promontory on the mainland coast.

Abalone are sedentary, seldom moving more than a few metres from fixed locations on the rocky reefs that they inhabit.

Stock structure

Greenlip abalone is comprised of many independent populations across Tasmania, Victoria, South Australia and Western Australia. For practical reasons, the status of greenlip abalone was assessed on the basis of management units (i.e. fishery zones) used in Victoria, 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. Greenlip abalone do not occur in the eastern zone.

Annual catch

 Sector

Estimated Victorian catch

Western zone

Central zone

Commercial (2015/16 fishing year)

0 tonnes

3.4 tonnes

Recreational (usually statewide estimate from 2000/01 national survey)

unknown

 unknown

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

0 tonnes

0 tonnes

Estimated total

≈ 0 tonnes

≈ 3.4 tonnes

Stock status

The table below summarises and explains the status and management of greenlip abalone in the Victorian western and central zones based on: 

  1. Stock status: classification of the biological status of greenlip abalone in each 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 for greenlip abalone are all at the scale of the Victorian western and central zones.

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.

Western zone

Stock status (2013 data)

Key management settings

Risk management category

Classification:

overfished

Commercial harvest of greenlip abalone 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.

This fishery was closed in 2013.

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

Amber

Evidence:

Collectively, the following data provide evidence that this stock is recruitment overfished

  • fishery dependent data: catch data, catch per unit effort (CPUE)
  • fishery independent data1: including industry commissioned surveys

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 this stock is likely to be recruitment overfished.

Fishing pressure assessment

Based on this evidence, SAFS 2014 concluded that current fishing pressure is constrained by management to a level that may allow the stock to recover from its recruitment overfished status.

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

Central zone

Stock status (2013 data)

Key management settings

Risk management category

Classification:

overfished

Commercial harvest of greenlip abalone 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.

A minimal total allowable commercial catch and conservative size limits are currently in place for this fishery.

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

Amber

Evidence:

Collectively, the following data provide evidence that this stock  is recruitment overfished.

  • fishery dependent data: catch data, catch per unit effort (CPUE)
  • fishery independent data: including industry commissioned surveys

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 this stock was likely to be recruitment overfished

Fishing pressure assessment

Based on this evidence, SAFS 2014 concluded that fishing pressure levels were expected to prevent the stock recovering from a recruitment overfished state.

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

More information

More information on the commercial abalone fishery in Victoria can be found at Commercial abalone fishery.