Chris Sabine – University of Hawai’i at Manoa
Assessing Current and Future Ocean Acidification and Climate Vulnerabilities Along the Hawaiian Archipelago
The Insular Pacific-Hawaiian Large Marine Ecosystem (IPH-LME) Complex provides critical benthic and oceanographic habitats for important fisheries and protected resources. A critical missing piece in assessing vulnerability in the Hawaiian Islands to ocean change is understanding the variability of ocean properties and ocean acidification in space and time. Coral reef managers are particularly challenged with sustaining the ecosystem functions and services under changing environmental and human impacts.
What we are doing
This project takes a modeling approach to link the state of the ecosystem with societal outcomes to assess risk vulnerability in the IPH-LME. Researchers will combine state-of-the-art climate, regional, and coral reef ecosystem models with satellite assessments of ocean acidification. Results will provide robust projections of ocean acidification-related stress across the IPH-LME for the next 5 decades (2020-2070. Societal data will be collected through interviews, workshops, and community surveys to expand the number of relationships modeled. Vulnerability of the Hawaiian Islands to the projected ocean acidification-related stress will be evaluated using relationships between ecological and social state components. Resource managers will evaluate tradeoffs between different management practices and climate futures to determine which interventions would be most effective in supporting ecosystem integrity while enhancing societal wellbeing in the face of ocean acidification.
Benefits of our work
Collaboration between scientists, managers, non-governmental organizations, and resource users will help ensure that socio-economic and biophysical processes are both considered when evaluating consequences of policy decisions and climate projections. This transdisciplinary approach provides opportunities to build relationships among the project stakeholders. This project directly supports the Hawai‘i Division of Aquatic Resources (DAR) in its efforts to develop vulnerability analyses and a state action plan for ocean acidification to build adaptation and resilience in communities affected by ocean acidification. The social vulnerability analysis method developed under this project will have broad applicability for U.S. regions of the Pacific Ocean.