Mangrove restoration

​​Expertise in mangrove restoration science
Mangrove restoration is being used to reverse the huge deforestation we have seen, especially in Southeast Asia. However, the success of restoration efforts in the region are notoriously low, despite the tens of millions of dollars spent. This is most often because we plant the wrong species in the wrong location, where they cannot survive high flooding.

In the Mangrove Lab, we have been working to provide the information that restoration managers need to plan where are the best locations to grow mangroves. We need to know the correct elevation that mangroves can grow at - we do this by conducting high resolution land surveying of aquaculture ponds and natural forests, alonside the deployment of tide gauges. This gives information on where elevations need to be raised to be more suitable for mangrove growth. We also contribute to the writing of practitioner restoration manuals.


Mangrove restoration in Sulawesi, Indonesia
We first did this work in Sulawesi, working with the NGO Blue Forests to help them plan a 28 ha restoration project in Makassar, southwest Sulawesi. Our elevation surveys were used to decide where to dig creeks and change the surface elevation.

For more information, see: Oh et al. 2017. The role of surface elevation in the rehabilitation of abandoned aquaculture ponds to mangrove forest, Sulawesi, Indonesia. Ecological Engineering 100, 325-334.
Mangrove restoration in Singapore
We are applying the same approach to a restoration project we are conducting at Pulau Ubin, Singapore. As part of the Restore Ubin Mangroves (RUM) community initiative, we are working with NParks to map elevation and species distributions to come up with the restoration site design.

Most recently, we held a multi-stakeholder restoration design workshop to come up with the plan for the phase 2 of the restoration site. This meeting brought together engineers, NGOs, government officials from several agencies, nature enthusiastics and local residents. More news coming soon!
Publications
Friess. 2017. Mangrove rehabilitation along urban coastlines: a Singapore case study. Regional Studies in Marine Science 16, 279-289.

Oh, Friess & Brown. 2017. The role of surface elevation in the rehabilitation of abandoned aquaculture ponds to mangrove forest, Sulawesi, Indonesia. Ecological Engineering 100, 325-334.

Sharma, Nadoaka, Nakoaka, Uy, MacKenzie, Friess & Fortes. 2017. Growth performance and structure of a mangrove afforestation project on a former seagrass bed, Mindanao Island, Philippines. Hydrobiologia 803, 359-371.

Sillanpää, Vantellingen & Friess. 2017. Vegetation regeneration in a sustainable harvested mangrove forest in West Papua, Indonesia. Forest Ecology and Management ​290, 137-146.

Balke & Friess. 2016. Geomorphic knowledge for mangrove restoration: a pan-tropical categorization. Earth Surface Processes and Landforms 41, 231-239.