June 2, 2023

Coral Reef Restoration Project InCORE™ Launches in the Philippines
Awarded by the Asian Development Bank’s international call for proposal
Kajima Corporation (President: Hiromasa Amano) has launched the Integrated Approach for Coral
Reef Conservation and Rehabilitation (“InCORETM”) project in collaboration with Tokyo Institute ofTechnology (“Tokyo Tech”) and the University of the Philippines Visayas (UPV), aiming to conserveand restore coral reefs, which are at risk of degradation due to climate change and anthropogenic
disturbance.
This project proposes and implements an integrated approach that includes environmental
assessment, the implementation of coral rehabilitation and the verification of effectivenessthrough monitoring, by combining Tokyo Tech's environmental assessment of coral reefs using
numerical simulation technology, Coral NetTM, which is Kajima’s coral rehabilitation technology,
and UPV’s expertise, as it is familiar with the regional ecosystem. The goal of the project is topropose and implement an integrated approach to achieve locally appropriate conservation andthe restoration of coral reefs.
The project won an award from by the Asian Development Bank (“ADB”) as part of its"Technology Innovation Challenge for Healthy Oceans - Restore and Protect Coral Reefs."
international open call for proposal.

Concept and features of Coral NetTM

Coral NetTM (durable type)Background
The triangular-shaped area surrounded by countries including the Philippines, Indonesia,
Malaysia and Papua New Guinea is known as the Coral Triangle and is inhabited by three-quartersof the world's coral species, making it an area rich in marine biodiversity. However, in recentyears, due to coastal development, overfishing and global warming caused by climate change, thecoral reefs in this area are in danger of degradation, and the impact on fishery resources andtourism is becoming more serious. Although there have been many coral rehabilitation projects
both in Japan and internationally, prior environmental surveys, the improvement of coralestablishment rates, the implementation of continuous monitoring, and the improvement of themarine environment have all proven to be challenges.
Therefore, as part of its efforts to combat climate change and ensure sustainability in the AsiaPacific region, the ADB issued a call for applications for coral reef conservation and restoration
technologies, and Kajima’s proposal was selected from among 34 applications from research
institutes and organizations around the world.
Role-sharing
UPV will conduct ecological surveys of the coral reefs in the area based on its previous researchexperience, and also coordinate with stakeholders, including local governments, research
institutes and fishery groups. Tokyo Tech perform will carry out multiple environmental impact
assessments using their numerical simulation technology based on coastal ecosystem models.
This technology can quantitatively analyze wide-area and time-series changes in environmental
conditions that cannot be obtained through short-term field surveys alone. Kajima will consider
how to apply Coral Net to suit the local environmental characteristics, as well as planning andcoordinating the overall project.
Kajima, Tokyo Tech and UPV will jointly conduct investigations to identify the causes of coral
reef degradation, select suitable locations for coral rehabilitation, and carry out monitoring
surveys. Based on these, the project team will propose suitable measures to improve
environmental conditions for enhancing coral rehabilitation.
Project outline
The coastal area of Tangalan in Aklan Province, which is on Panay Island in the Philippines, has been
selected as the project site, and the local government there has been promoting coral rehabilitation
efforts. The project will be implemented in close collaboration with local stakeholders.
The project will be carried out over a period of 18 months, implementing an integrated approachto coral restoration in three stages and verifying its effectiveness.

Location of Tangalan

Tangalan coastal area

1. Environmental assessment through field surveys and numerical simulation technology
In collaboration with the local government and the university, ecological surveys will beconducted in the area. Tokyo Tech's numerical simulation technology for coastal environmentsallows us to analyze in an quantitative manner the spatial distribution of seawater flow,temperature, salinity, and water quality, as well as temporal changes. Subsequently, suitable coral
rehabilitation methods and sites will be selected, taking into consideration the environmental
conditions of the target area.

Examples of environmental assessment using numerical simulation technology by Tokyo Tech

2. Implementation of coral rehabilitation technology
Coral NetTM is a core coral rehabilitation technology that enables more stable rehabilitation thanconventional coral transplantation methods. Kajima has more than 20 years’ experience andknow-how from demonstration tests conducted in Okinawa, Japan. The Coral Net will be installedin the coastal area of Tangalan based on the environmental assessment, in collaboration withlocal stakeholders.

Example of coral restoration using Coral NetTM in Okinawa, Japan

3. Monitoring and verification
After the rehabilitation technology is introduced, continuous monitoring will be conducted
together with local stakeholders. In addition, possible measures to improve water quality andother environmental conditions surrounding coral reefs will be examined by quantitatively
clarifying various relationships with the sources of environmental loads, such as the inflow of finesediments from the adjacent land areas, by using Tokyo Tech's numerical simulation technology.
By using these activities, the effectiveness of the integrated approach of this project will beverified.

Future prospects
In Kajima, Tokyo Tech, and UPV’s vision, this integrated approach will be applied and developedin the various countries using this project’s outcomes as a foothold, and there will becollaboration with each region’s stakeholders for the conservation and restoration of coral reefs.
Through these efforts, Kajima will contribute to global environmental conservation and thetransition to a decarbonized society.