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Habitat valuation based on SCOPE, ENCORA and MARBEF recommendations

Habitat valuation based on SCOPE, ENCORA and MARBEF recommendations. Valued elements. Structures Functions. Habitat or area value ?. Area – habitat 1 – score 2 – coverage 70% - - habitat 2 – score 9 – coverage 30% Habitat 1 Rarity 0 to 5 Function 0 to 10….

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Habitat valuation based on SCOPE, ENCORA and MARBEF recommendations

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  1. Habitat valuationbased on SCOPE, ENCORA and MARBEF recommendations

  2. Valued elements • Structures • Functions

  3. Habitat or area value ? Area • – habitat 1 – score 2 – coverage 70% - • - habitat 2 – score 9 – coverage 30% Habitat 1 • Rarity 0 to 5 • Function 0 to 10….

  4. Specifics of the marine habitats • Low number and small size of structuring species • Openess, connectivity, dispersal • Unification not fragmentation as main threat

  5. Selection of approach • Biological approach • Socioeconomic approach

  6. Indicators must be chosen pragmatically so that they will be: • environmentally sustainable, • economically viable, • technologically feasible, • socially desirable/tolerable, • legally permissible

  7. Biological valuation • „the intrinsic value of marine biodiversity without reference to anthropogenic use” • Criteria: • Rarity, aggregation, fitness, naturalness, proportional importance

  8. Criteria - indicators • Rarity**– degree to which an area is characterised by unique features • Aggregation ** - degree to which an area is a site where most individuals or species are aggregated • Fitness consequences** - degree to which an area is a site that makes a vital contribution to population or species presence • Naturalness * - degree to which an area is pristine • Proportional importance* - global, regional, national level – percent of value

  9. Example analyse, score 1 to 5 Zostera • Rarity - Rare and protected fish species specific to this habitat only -5 • Aggregation – 80% of marine species from PMA - 5 • Fitness consequences – vital for 40% of PMA marine fauna occurrence - 4 • Naturalness – strongly to moderately changed – 3 • Proportional importance – global - low, regional – medium, national – high

  10. Example analyse – score 1 to 5 Mobile sublittoral sands Rarity – preffered by some species, specific to few – 3 Aggregation – 10% of marine species from PMA – 3 Fitness consequences – vital for water quality and commercial species nursery - 5 Naturalness – little or no changed – 4 Proportional importance – global - low, regional – high, national – moderate

  11. Socioeconomic valuation • CVM • - monetary importance • - societal and cultural importance

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