Resilience buffers the impact of pressures

Good governance and ecological integrity generally allow systems to absorb disturbance to maintain critical function, which will mitigate the impact of pressures on systems. We determine how resilience will help protect marine services from pressures to better predict what goal scores will look like in the near future.

Resilient systems are ecologically healthy and have robust social systems to deal with perturbations. The global OHI model includes three general indices of resilence: ecoystem condition, regulatory efforts to address specific pressures, and the general effectiveness of social systems.

For the global OHI assessment, we assess three general categories of resilience: ecological health, regulatory effort, and social effectiveness.

Each resilience category may be composed of several datasets. For each dataset, values will range from 0 to 1, reflecting the magnitude of resilience for each country (with 1 indicating high resilience).

The resilience data is then combined to estimate the total resilience for each goal and country. Resilience estimates are intended to directly address, as much as possible, the specific pressures acting on a goal. Consequently, resilience scores should not exceed pressure scores, otherwise likely future status scores will be inflated.

The pressure estimate for each goal and country is then combined with the trend and resilience estimates to estimate goal scores.

Learn more about the resilience model and data used for the OHI global assessment by clicking below.

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Chambers, J.C., C.R. Allen and S.A. Cushman. 2019. Operationalizing ecological resilience concepts for managing species and ecosystems at risk. Front. Ecol. Evol. https://www.frontiersin.org/articles/10.3389/fevo.2019.00241/full