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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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Chlorophyll a | Tropic structure, Community structure, Eutrophication | Phytoplankton; Fisheries |
| Should be applicable to all ecosystems | Demonstrable | Ecosystem, Community | Species-based, Trophodynamic | Anthropogenic | 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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Purpose
Phytoplankton; Fisheries
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 in all ecosystems.
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 -
Medium: by itself chlorophyll a is probably not a reliable indicator of the effects of fishing, but in conjunction with other indicators (e.g. size-spectra) it could be a very powerful summary indicator that not only identifies change, but helps to identify the cause of the change. However, even though it is widely used in other fields (e.g. water quality management) its role as an indicator for fisheries remains under tested.
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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