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Indicator summary
Summary of indicator structure and function
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| Indicator examples | Current status and trends | Management objective/direction | Stakeholder/Public acceptability |
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| Examples of how the indicator is used. | Pick one of the following:
| Pick one of the following:
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| 1999 ‘Threat Abatement Plan for the incidental catch (or by-catch) of seabirds during oceanic longline fishing operations’ for Australia’s AFZ | |||
| In New Zealand, the planned approach for measuring mortality of albatross species in longline operations is to record the number of incidental seabird mortalities rather than catch rate per hooks or tows | |||
Definition and/or background
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Fisheries, marine mammals, seabirds, penguins, marine turtles, sea snakes
Taxa
Data required
The following is from Fulton et al 2004a -
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Should be applicable to all marine ecosystems.
Identified capability
Is there any additional information that would be of interest in regards to the identified capability?
Otherwise can leave this section blank and just fill in the table instead.
Biological classification level
Is there any additional information that would be of interest in regards to the biological classification?
Otherwise can leave this section blank and just fill in the table instead.
Response variable
Is there any additional information that would be of interest in regards to the response variable?
Otherwise can leave this section blank and just fill in the table instead.
Drivers
Is there any additional information that would be of interest in regards to ecological drivers?
If not can leave this section blank and just fill in the table instead.
Robustness
The following is from Fulton et al 2004a -
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where Nmin is the minimum population estimate of the stock, ½ R max is one-half the maximum theoretical or estimated net productivity rate of the stock at a small population size, and Fr is a recovery factor between 0.1 and 1.(Wade 1998). An example of the use of PBR in a fishery can be found in New Zealand, where threshold limits for the bycatch of the endemic New Zealand sea lion Phocarctos hookeri, (one of the world’s rarest pinnipeds) in the arrow squid fishery have been set at 63 individuals of any age or sex class or 32 females per annum. These numbers were based on 1993 USA/NMFS fisheries guidelines, which state that a population must not fall below its maximum net productivity level. Where that level for marine mammals is thought to be between 50% and 85% carrying capacity (Wade 1998).
Management strategies and/or objectives
define a standard set of management objectives?? ie from Indiseas
- Conservations biodiversity
- Ecosystem stability and resistance to perturbations
- ecosystem structure and functioning
- resource potential
has it been used in a management strategy? if so how?
relationship to management strategies/ objectives
Stakeholder/public acceptability
Acceptability with stakeholders
- by all stakeholder
- by the public
- understandable to the stakeholders
Associated links
Hyperlinks to organisations, databases, webportals, and ID books, that are associated with this indicator, if appropriate.
References
Fulton, E.A., Smith, A.D.M., Webb, H., and Slater, J. (2004a) Ecological indicators for the impacts of fishing on non-target species, communities and ecosystems: Review of potential indicators. AFMA Final Research Report, report Number R99/1546.
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Fulton, E.A., Fuller,M., Smith, A.D.M., and Punt, A. (2004) Ecological indicators of the ecosystem effects of fishing: Final report. AFMA Final Research Report, report Number R99/1546.
Other references that can be used to update this page
Citation
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