GAPI Indicators

GAPI identified a suite of indicators that best describes the major ecological impacts of marine finfish aquaculture while using the fewest indicators possible. The final GAPI indicators are listed in the table below. The indicators are grouped into three categories based on environmental performance and include: inputs, discharges, and biological effects. The GAPI project developed specific criteria to ensure that the indicators were sufficiently rigorous. Included in these criteria are:

Capture-Based Aquaculture Antibiotics Escapes
Ecological Energy Antifoulants (Copper) Pathogens
Industrial Energy Biochemical Oxygen Demand  
Sustainability of Feed Parasiticides  

Indicator Selection

he 10 indicator categories that are included within GAPI have been selected based on a survey of those ecological impacts addressed in other major aquaculture assessment initiatives, including retailer standards, industry sponsored standards, seafood cards, and third-party certification. Emphasis has been placed on identifying a suite of indicators that sufficiently describes the major ecological impacts of marine finfish aquaculture while using the fewest indicators possible. Each additional indicator increases the complexity of the analysis, the likelihood of significant data gaps, and the effort required to collect data. Therefore, rather than attempting to measure all conceivable impacts from production systems, the most significant and measurable environmental effects were evaluated.

In order to determine the suite of GAPI indicators, the project examined existing aquaculture assessment efforts and pinpointed those environmental impacts that were commonly addressed across these efforts. Those issues that appeared consistently among initiatives were considered to have passed something of a peer review and, as a result, were important enough to include within GAPI. The precise formulations of each indicator were refined by applying feedback from the scientific literature and expert consultation. While there are no universal criteria for the formulation of these indicators, careful attention was paid to ensuring that the indicator formulas were scientifically sound and comprehensible and could be populated with publicly available data.