20 November 2019
Cyclones crossing over coral reefs can have a major impact on the coral environment and cause substantial damage. Climate change is resulting in warmer seas and stronger and larger cyclones. This means the damage caused on reefs is becoming more frequent and they are less able to recover.
BMT has been contributing to proposed solutions to overcome this challenge by doing work in coral rehabilitation. Coral rehabilitation helps to restore reef function and support the various ecosystem services they provide, but it’s important to remember that unless global efforts to reduce emissions are achieved, coral rehabilitation will have little impact.
We are currently involved in two coral rehabilitation projects, one on Australia’s Great Barrier Reef (GBR) and one in the Seychelles. Our GBR project is being done in collaboration with the University of Queensland and we are trialling an approach to stabilise coral rubble, increasing the likelihood of coral recruitment, and also returning structure to damaged reefs. The approach involves taking broken coral from the sea bed and placing it into natural-fibre nets to provide a stable base for new coral recruitment.
These artificial bommies are then placed in such a way as to protect other areas of the reef from cyclone wave damage.
In the Seychelles over 90% of coral reefs have been lost as a result of a few significant bleaching events. Coral reefs provide important ecosystem services such as coastal protection, habitat for a range of marine species and in turn support the tourism and fisheries industries, which constitute a large proportion of Seychelles’ economy.
Our World Bank funded project with partners Aither (environmental economists), the University of Seychelles Blue Economy Research Institute, WiseOceans and the Marine Conservation Society, Seychelles, is helping to develop a reef rehabilitation strategy for the country, including identifying priority locations, developing a business case for rehabilitation and identifying finance mechanisms and governance structures to implement it.
This project builds on prior work in the Seychelles, and internationally, on innovative business models and financing mechanisms (such as the Debt-for-Nature Swap) to support conservation and the restoration of critical ecosystems.
Dr David Rissik - Senior Principal, Climate Change Adaptation, BMT, Brisbane, Australia
David has significant experience in climate change adaptation, having co-developed and applied a variety of tools and approaches to support effective responses to climate change. He has delivered many risk-based climate change adaptation projects around Australia for the government and private sectors. He has a background in coastal and estuarine management, and a strong interest in the use of science and research to underpin policy and decision making.
David is involved in a variety of projects related to coral rehabilitation and ecosystem management, including projects in the Great Barrier Reef, the Pacific Region and in the Seychelles.
In addition to his role at BMT, David is a Non-Executive Director of Green Cross Australia and an Adjunct Professor at Griffith University.
This text was originally published on Focus Issue 2, 2019
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