review of ecosystem condition accounting case studies€¦ · a7 canada megs terrestrial (for...
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Review of Ecosystem Condition Accounting Case Studies(Discussion Paper 2.2)
Mandy Driver & Joachim Maes
Forum of Experts on SEEA Experimental Ecosystem Accounting
Glen Cove, New York
27 November 2018
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10Selection of case studies
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Type A case studies: “Strict” condition accountsCountry Short title Realm Scope Date
A1 Australia Port Phillip Bay Terrestrial, marine Sub-national 2016
A2 Australia Great Barrier Reef Terrestrial, inland water, marine Sub-national 2015
A3 Australia State of Victoria Terrestrial, inland water Sub-national 2013
A4 Australia Victoria Central Highlands Terrestrial Sub-national 2017
A5 Australia Accounting for Nature Trials Terrestrial, inland water, marine Sub-national 2016
A6 Australia Victoria’s Parks Terrestrial, inland water, marine Sub-national 2015
A7 Canada MEGS Terrestrial (for condition) National 2013
A8 Neth. Limburg Province Terrestrial, inland water Sub-national 2014
A9 S. Africa National river accounts Inland water National 2015
A10 UK Woodlands Terrestrial National 2015
A11 UK Freshwater ecosystems Inland water National 2015
A12 UK PAs in England & Scotland Terrestrial, inland water, marine Sub-national 2015
A13 UK Forest Enterprise England Terrestrial Sub-national(?) 2017
A14 UK Green space in urban areas Terrestrial National 2018
4 countries
Majority sub-national
All within last 6 years
Mainly terrestrial & inland water; marine less developed
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Main issues considered in the review
1. Indicators used
2. Aggregation of indicators
3. Reference levels and reference condition
4. Reporting the account
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10
Analysis of the case studies was based on these four issues
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Some observations
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1. Indicators
• Rationale for indicators generally not explained
• No explicit typology of ecosystem condition indicators
• No one-size-fits-all but some common indicators across realms and ecosystem types
• The most comprehensive accounts use a hierarchy of indicators, sub-indices and overall index
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2. Aggregation
• Used in 8 cases
• Sometimes to a single index or score (e.g. 0-1, 0-11), sometimes to a category (e.g. good, fair, poor), sometimes both
Index and/or CategoryIndicators → Sub-indices →
Comprehensive accounts use a two-step thematic aggregation:
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3. Reference levels and reference condition
• Only 7 tables include reference or baseline values
• Sometimes implicit
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4. Reporting the accountFrom the Technical Recommendations:
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A3. State of Victoria
Terrestrial
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Wetlands
A3. State of Victoria
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A8. Limburg Province
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9. South Africa: National River Accounts
At the most detailed level:4 indicators of ecosystem condition• Flow • Water quality• Riparian habitat• Instream habitat
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Aggregated ecological condition category
Aggregated ecological condition index →
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A10. UK Woodlands
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A11. UK Freshwater Ecosystems
Wetlands
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Open water