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Keep cruises off remote coral reefs

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HAL Id: ird-01949206 https://hal.ird.fr/ird-01949206

Submitted on 9 Dec 2018

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Keep cruises off remote coral reefs

Philippe Borsa, Bertrand Richer de Forges, Julien Baudat-Franceschi

To cite this version:

Philippe Borsa, Bertrand Richer de Forges, Julien Baudat-Franceschi. Keep cruises off remote coral reefs. Nature, Nature Publishing Group, 2018, 558 (7710), pp.372-372. �10.1038/d41586-018-05453-x�.

�ird-01949206�

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To be cited as:

Borsa P, Richer de Forges B, Baudat-Franceschi J (2018) Keep cruises off remote coral reefs. Nature 558, 372. doi : 10.1038/d41586-018-05453-x

Keep cruises off remote coral reefs

Just 3% of the world’s coral reefs remain in near-pristine condition; about one- third of these are located in the Coral Sea in the South Pacific Ocean. The Chesterfield reef ensemble, one of the world’s largest atolls, is an example. It is part of France’s overseas territory of New Caledonia, and its remoteness has so far preserved its wealth of biodiversity. We therefore call for the territory’s government to drop its plans to open these precious reefs to the destructive effects of cruise ships and mass ecotourism.

The Chesterfield reefs were spared the 2016 mass-bleaching phenomenon that affected coral reefs around the world. They host the largest seabird colonies in the tropical western Pacific. Indeed, nitrogen from seabird guano may contribute to the resilience of reef-building corals. Comprising a remarkable variety of corals, the reefs host an abundance of diverse fish shoals and species such as the threatened fairy tern (Sternula nereis), several endemic marine gastropods and an endemic sea snake (Hydrophis laboutei). They are also a nesting site of regional importance for the green sea turtle (Chelonia mydas).

Cruise ships will inevitably disrupt the reef and lagoon habitats and fauna. Their hundreds of passengers will lethally disturb breeding seabird colonies, by repeatedly scaring away nesting adults. This could particularly affect the brown booby (Sula leucogaster), the lesser and greater frigatebirds (Fregata ariel and F.

minor) and the sooty tern(Onychoprion fuscatus).

Philippe Borsa, Bertrand Richer de Forges Institut de recherche pour le développement, Nouméa, New Caledonia.

Julien Baudat-Franceschi Corte, France.

[email protected]

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Red-footed boobies (Sula sula) nesting on Loop Islet, Chesterfield

archipelago. Credit: Philippe Borsa/IRD

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