Mariculture Sustainability Index (MSI): Mariculture Sustainability and Mariculture Regulations
The MSI score is obtained as a combination of all the indices. For the Ocean Health Index, one subset of these was used to calculate mariculture sustainability and another to calculate mariculture regulations. In addition, the indicator on genetic escapees was used to estimate the pressure of mariculture upon the delivery of the biodiversity goal.
Which Goals Does This Affect?
How Was It Measured?
Scores for each assessment criterion were aggregated and averaged based upon the proportion of the landings that each assessed species contributed to the overall catch in each country in the current year. Scores were rescaled from the 1 to 10 MSI range to 0 to 1 and then weighted equally to come up with a composite score for Resilience or Status sustainability; these scores are country and species-specific.
The MSI data layer for ‘genetic escapees’ was used as a Pressure to indicate the potential for native or introduced species to reduce the number of species or the extent of habitats that comprise the Biodiversity goal.
descriptions of the five criteria used are shown in the table below.
Description of practice and score scheme for applied criteria categories.
|Criteria||Where Used||Description of Practice and Score Scheme|
|Fishmeal Use||Sustainability Aspect of Status||Fish protein and oil inclusion in the diet at any stage of development must be considered; herbivore species will score 10, and carnivorous (piscivorous) organisms will score closer to 1, depending on the level of feed supplied.|
|Waste Treatment||Sustainability Aspect of Status||Water exchange, output destinations, recycling and filtering of open water discharge or closed system reuse systems. Systems that are closed score high (10), while open systems without waste treatments score low (1)|
|Seed and Larvae Origin||Sustainability Aspect of Status||
Hatcheries are major providers of larvae, fry and seeds. Broodstock origin and strain will also affect the score. Wild seed collection and its importance contribute to a low score due to bycatch and other effects on non-target species.
|Code of Practice Usage||Resilience||
Certification, up to date set of standards and principles, i.e., FAO
Code of Conduct (FAO 1995, 1999), or Eco-labeling are scored high, while no certification or similar scheme scores low (1)
Food safety related to a specific geographical origin, slaughtering or processing facility, and batch of fish can be identified scores high (8-9). If the origin and preparation of feed used in the farmed sector is included then scores high (10).
Source: (Trujillo, 2008 - Table S25)