Scientists strengthen global efforts to manage vulnerable marine habitats

A analysis workforce from King Abdullah University of Science and Technology has standardised a technique for strengthening world efforts to handle susceptible marine habitats.

Measuring calcium carbonate: Serving to scientists monitor coral reef well being

A blueprint for measuring calcium carbonate on the ocean ground may help marine scientists in monitoring coral reef health, and in encouraging the remark of susceptible marine habitats on a worldwide scale.

Local weather change and air pollution from human actions are conclusively modifying a wide range of marine habitats, notably coral reefs. To evaluate and mitigate future adverse impacts, ecologists should perceive how these ecosystems are functioning within the current.

An indicator of coral reef well being is how a lot calcium carbonate is produced over a sure time frame as shells and skeletons of marine animals accumulate on the ocean ground. The analysis workforce employed a novel technique to measure the buildup of calcium carbonate – they thought of tiles on the seabed, which step by step develop into dwelling to settling pioneering vegetation and animals. After a 12 months, the researchers retrieved the tiles to see how a lot calcium carbonate had been collected and which residing species had been current.

“To know how marine ecosystems are altering over house and time, we want to have the ability to evaluate information collected from totally different habitats,” defined Maggie Johnson, Marine Scientist. “However researchers make use of a variety of approaches or measure totally different variables, that means that the information won’t be instantly comparable,” she provides. This makes it troublesome to create a worldwide image of marine ecosystem well being, and subsequently makes it troublesome to find out how the susceptible marine habitats could be managed.

Gathering comparable information is vital in monitoring susceptible marine habitats

Johnson and her colleagues have developed a standardised technique for making and deploying calcification accretion items (CAUs), which is analogous to settlement tiles. Nonetheless, it’s particularly utilised to measure calcium carbonate. The excellent ‘how-to’ information gives detailed directions for tile development and CAU meeting, from materials suppliers to measurements, in addition to how you can place and retrieve them. It will permit scientists to gather comparable information from coral and oyster reefs worldwide.

“Coral reefs cowl lower than 1% of the seafloor but present greater than 25% of the ocean’s biodiversity,” stated Johnson. “A lot of this variety comes from tiny critters residing within the unseen cracks and crevices.” These hidden species, or ‘cryptic taxa,’ can’t be captured by visible surveys, however the CAUs embrace a small house for these tiny taxa to occupy.

“Throughout assortment, the tiles have to be positioned in zipped baggage to maintain the group of cryptic critters intact all the best way to the lab,” added Johnson.

The information advises instant processing of the samples whereas the animals and vegetation are nonetheless alive. This entails taking high-resolution images later utilised for recognizing species and microscope observations to depend child coral earlier than a weak acid then removes the calcium carbonate.

“By weighing the tiles earlier than and after decalcifying them, researchers can calculate how a lot calcium carbonate was deposited on that tile over a 12 months,” famous Johnson. “This determine will help evaluate reef situations in numerous components of the world or how the well being of 1 reef is altering over time.”

Thus, understanding the impacts of human actions on marine habitats will assist researchers and governments in discovering strategies that may help in managing susceptible marine habitats and mitigate the opposed results. “This standardised and accessible strategy will assist promote collaboration and knowledgeable decision-making even when utilizing information from everywhere in the world,” concluded Johnson.


  1. Johnson, M.D., Worth, N.N. & Smith J.E. Calcification Accretion Models (CAUS): A standardised strategy for quantifying recruitment and calcium carbonate accretion in marine habitats. Strategies in Ecology and Evolution Advance on-line publication, 11 April 2022.|article
Subscribe to our newsletter


Leave a Reply

Your email address will not be published. Required fields are marked *