“Warm the world’s oceans unabated, by 2050 about 90 percent of the world’s coral reefs are dying – however, I would like to do something,” said Ulrike Pfreundt, according to a news release of ETH from Thursday. The rising water temperatures disrupt the algae between the corals and their symbiotic. The corals reject the algae and starve to death with time. Known this process under the term “coral bleaching”.

only the coral itself But not threatened: The reefs serve as a breeding ground for at least a quarter of all species of fish in the ocean. Your loss impact, therefore, disastrous to the stability of marine Ecosystems, stressed Pfreundt. In addition, coral reef areas provide natural protection for the coast and take in this way, the human being.

in Order to support the preservation of the coral reefs, the researcher, with colleagues in the Team led by Roman Stocker and architects at the ETH in man-made structures from the 3D printer, on which coral larvae could settle. Despite the warmer water temperatures would not die all the corals directly, Pfreundt. You assume that certain areas for coral reefs to remain suitable – for example, because there is in the vicinity of a cooling flow, wrote the ETH.

in Addition, Researchers have found, for example, in the Red sea on a heat-resistant corals, and research teams around the world are trying to breed more resilient coral symbioses. For this, the ETH want to create researchers of artificial structures on which the coral larvae can settle.

Experiments with artificial reefs there are, however, no baby corals to settle there, it was called. The reason for this is that most of the artificial reefs were structurally sophisticated to little: you don’t provide enough protection space for young corals, and inter-to bring acted too little with the flow, the larvae at all close enough to the substrate.

Together with Benjamin Dillenburger and Mathias Bernhard of the Department of architecture, ETH Pfreundt is therefore working on more appropriate structures, the researchers in the 3D printer. Then Pfreundt wants to test this in a controlled flow pool and, later, in a field trial.

(SDA)