Join us
Orange welcome sign that reads Royal Geographical Society with IBG.

Become a member and discover where geography can take you.

Join us

The open access ReefBudget methodology developed by geographers at the University of Exeter has been integrated into the monitoring programmes of major reef conservation agencies globally.


The carbonate budget of a coral reef (the balance between calcium carbonate production and erosion) is critical for the physical resilience of reef structures. The application of carbonate budgets to guide management and conservation has been limited by a lack of standardised approaches.



ReefBudget is an open access tool, developed by geographers at the University of Exeter to address this challenge, with an initial focus on the Caribbean region, field testing and workshops.

The methodology has been used to quantify the severe impacts of the 2016 coral-bleaching event in the Maldives and to undertake budget assessments at sites along the length of the Mesoamerican Reef. Associated work in the Netherlands Antilles has identified areas of enhanced coastal vulnerability to sea-level rise. Work in the British Indian Ocean Territory is also using the methodology to monitor changes post the 2016 coral-bleaching event.

Data from this research has most recently been used to assess global-scale trends in reef growth potential.



ReefBudget is now being used by regional reef management agencies and NGOs working at sites spanning four of the six global biogeographic realms in which coral reefs grow. advice has been provided via dedicated in-person training workshops and organisations have modified their field protocols to integrate the methodology.

Resultant datasets are now being used by these agencies in formal reef status reporting protocols. For example, The Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia noted that within their major programme of reef site assessments at over 70 locations within the world heritage-listed Ningaloo Reef: “The online ReefBudget methodology provides us with an invaluable tool to start linking ecological state and state change data to the physical functionality of reefs, and thus to feed such metrics into local management action plans.”


More information 

Institution: University of Exeter

Researchers: Professor Chris Perry

Share this resource

This is an open access article under the terms of the Creative Commons Attribution License (CC BY NC 4.0), which permits use, adaptation, distribution and reproduction in any medium or format, provided the original work is cited and it is for non-commercial purposes. Please contact us for other uses.

How to cite

Royal Geographical Society (with IBG) (2023) ReefBudget: a new global coral reef monitoring tool to support reef conservation and management. Available at  Last accessed on: <date>