New study on Trinidad and Tobago’s mangroves paves the way to global carbon market

26 July 2021

New research led by Trinidad and Tobago’s Institute of Marine Affairs (IMA) will be the first step in laying the groundwork for the country to trade carbon internationally, supporting the economy while fighting climate change.

Carbon dioxide is one of the main drivers of climate change, and mangroves have an immense capacity to capture carbon from the atmosphere and store it away for millions of years – a process known as carbon sequestration.

The Mangrove Soil Carbon Sequestration Assessment project, funded by the British High Commission in Port of Spain, aims to measure how much carbon is stored in local mangrove soils and give it a monetary value. This would enable trading in the emerging ‘carbon market’, where units of greenhouse gas emissions are priced and traded, in order to limit climate change.

The comprehensive, high quality data the project will provide will help develop more targeted evidence-based conservation policies for the country’s 7500 hectares of mangroves, while enabling it to earn foreign exchange income for mangrove preservation in the future. It will also contribute to Trinidad and Tobago’s commitments under the Paris Agreement on climate change.

Minister of Planning and Development, Hon Camille Robinson-Regis, welcomed the initiative: “This project will be highly profitable to Trinidad and Tobago, not only for its monetary value, but also for its environmental benefits as well as being a tool in our National Development Strategy and our Climate Action Goals (SDG13).”

British High Commissioner to Trinidad and Tobago, Harriet Cross, stated: “This project shows the importance of ensuring that we are collecting the right data to make informed choices. Projects like this help us to be ambitious, meet Paris Agreement goals, support stronger national action and stronger international collaboration, all of which are needed to tackle climate change and protect current and future generations.”

The project will be presented as a case study during a virtual event organised by the Commonwealth Secretariat on the International Day for the Conservation of the Mangrove Ecosystem, 26 July, in collaboration with members of the Mangrove Ecosystems and Livelihoods Action Group under the Commonwealth Blue Charter.

Mangroves – an untapped climate action treasure

Mangrove forests are among the most carbon-dense ecosystems on earth, with over 90 percent of mangrove carbon stored in their soils. The assessment involves the analysis of soil cores from mangrove forests around Trinidad and Tobago, covering a wide gamut of environmental variables.

The study also examines which mangrove forests store the most carbon, as well as the factors that affect the amount they store.

“In the Caribbean, we have not quantified how much carbon is stored in our mangrove soils. The significance of the study is that understanding how much carbon is stored helps in terms of how we can use and monetize this information,” explained IMA Director (Ag.), Dr. Rahanna Juman.

“This will allow us to investigate initiatives where we can receive payments to maintain our mangrove forests in a healthy state, or even rehabilitate degraded ecosystems so that they can continue to store carbon.”

The project builds upon another UK-funded study conducted in 2020 by Professor John Agard of the University of the West Indies in collaboration with the IMA, which measured the carbon content within mangrove biomass. Together with that research, the IMA will develop the most accurate estimation of mangrove carbon storage ever conducted for Trinidad and Tobago, among a small handful in the world.

The project will be shared at a special webinar on International Mangrove Day with a view to exchanging views, lessons and experiences with other Commonwealth member countries and supporting the work of the Commonwealth Blue Charter.

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