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This page is still under construction
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Indicator summary
Summary of indicator structure and function
Indicator | Attribute | Purpose | If restricted to taxa, list which ones | Ecosystem applicability | Identified capability | Biological classification level | Response variable | Drivers | Robustness |
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Redfield ratio | Trophic structure, Eutrophication |
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| Should be applicable in all ecosystems | Demonstrable | Ecosystem | Environmental | Environmental, Anthropogenic | Low to medium |
Examples of how the indicators is used for ecosystem management and ecosystem status and trends
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: | Pick one of the following: |
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Definition and/or background
The following is from Fulton et al 2004a -
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Trophic structure, Eutrophication
Purpose
Provide any additional details necessary of the purpose listed in the table
Taxa
As appropriate list an taxa that this indicator is restricted to
Data required
The following is from Fulton et al 2004a -
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Should be applicable to all systems, though the ratio is likely to be different in oligotrophic conditions, due to the preferential recycling of nitrogen and phosphorous in comparison with carbon.
Identified capability
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Biological classification level
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Response variable
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Drivers
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Robustness
The following is from Fulton et al 2004a -
Low to medium: While a sensitive indicator of nutrient conditions it is not only indicative of the impacts of fishing. Other anthropogenic activities can impact upon this indicator (e.g. pollution). Moreover, the ratio will differ slightly depending on whether the system is oligotrophic, mesotrophic or eutrophic so reference points or background research in appropriate nutrient conditions is necessary.
Current status and trends
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Management objective/direction
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Stakeholder/Public acceptability
Acceptability with stakeholders?
* by all stakeholder
* by the public
* understandable to the stakeholders
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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Reviewers
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Additional notes may include: personal communication, email feedback
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