Woman coral farmer on Guadalcanal in Solomon Islands mounts coral fragments for growing out in the village lagoon in Marau Sound.
International trade in live corals could help preserve coral reef ecosystems, says new paper by Dr. Andrew L. Rhyne, Michael F. Tlusty and Les Kaufman
News Release: December 11, 2012
Text from Andy Rhyne with mages by Ret Talbot
The international trade in corals used to be primarily a curio trade of dried skeletons, but now focuses on live corals for the marine reef aquarium trade. A team of Roger Williams University (RWU), Boston University (BU), Conservation International(CI), and the New England Aquarium (NEAq) researchers has been studying this relatively new development and have published their findings about this unique trade and its long-term implications. The article, “Long-term trends of coral imports into the United States indicate future opportunities for ecosystem and societal benefits,” appears in the December issue of the journal Conservation Letters.
Assessing 21 years of live coral import data for the United States, the researchers found that the coral trade increased over 8% per year between 1990 until the mid-‐2000s, and has since decreased by 9% annually. This decrease is mostly due to the current economic climate. The timing of the peak and decline varies among species, and is a result of the rising popularity of mini-‐reef ecosystem aquariums, the global financial crisis, and an increase in domestic aquaculture production.
Acropora sp. mother colony used for continuous production of new fragments and daughter colonies for export to aquarium trade.
The live coral trade for home aquariums has traditionally been viewed in absolute terms as a threat to these undersea areas of high biodiversity. However, realities are often grey. In the case of coral reefs, supplying the home aquarium trade with locally cultivated corals can provide real economic benefits to small island communities, and thus, an incentive to protect the reefs from which the mother colonies are obtained.
In their article, the researchers highlight this dichotomy and demonstrate that recent changes in the trade of live corals for the reef aquarium hobby are resulting in new opportunities for conservation. “The trade has moved from a wild harvest to mariculture production, a change sparked by long-‐term efforts to produce a sustainable income to small island countries such as the Solomon Islands and also by the government of Indonesia,” says Rhyne. This shift from a wild fishery to a mariculture product poses new opportunities
and challenges for conservationists.
Coinciding with the publication of this study, the National Ocean and Atmospheric Administration (NOAA) has just proposed to protect 66 stony corals under the Endangered Species Act (ESA). An unintended consequence of this ESA listing would be to eliminate the benefits of the trade revealed by the study, which include elevated value for intact coral reefs, and an income source that is sorely needed in these island nations where hundreds of millions of people rely on reef resources for subsistence.
Daughter colonies growing on metal racks in protected waters offshore of the village.
According to the researchers, the trade is still rapidly evolving, creating challenges, such as the addition of new species that outpace effective management strategies. “New species in the live coral trade initially command high prices, but as they become common the price drops with feedback effects to the trade,” said Les Kaufman, co-‐author and Boston University professor of biology and research fellow at Conservation International.
“The live coral trade offers opportunities for coral reef ecosystem conservation and sustainable economic benefits to coastal communities,” says Andrew Rhyne, lead author and Roger Williams University assistant professor of marine biology and research scientist at the New England Aquarium. Co-‐author, Michael Tlusty of the New England Aquarium adds, “that the realization of these externalities will require effective data tracking”.
Coral reefs are under numerous human induced threats. These include the global threats of warming oceans that are becoming more acidic, and local threats such as improper land use resulting in increased nutrient loading, and overfishing, which can trigger an ecological cascade resulting in blooms of seaweed that inhibit coral growth.
Marau Bay village in Solomon Islands that is home to thriving coral mariculture business exporting live corals to Los Angeles for disttribution throughout North America.
While western countries are the source of the major threats to these corals reefs (because of globally-‐distributed carbon emissions), island nations have more than income at stake. Trade can be a powerful conservation incentive, but this emerging local conservation
tool is at risk of being lost due to the well-‐intended but rigid rules of the ESA, here invoked to protect corals and coral reefs globally from the billions of tons of carbon released into the atmosphere by developed nations. A more selective regulatory approach that gives credit to local efforts to manage reef resources wisely may be warranted.
References
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Andrew L. Rhyne, Michael F. Tlusty and Les Kaufman
Article first published online: 26 JUL 2012 | DOI: 10.1111/j.1755-263X.2012.00265.x
Conservation Letters
Volume 5, Issue 6, pages 478–485, December 2012
AbstractThe international trade in corals used to be primarily a curio trade of dried skeletons, but now focuses on live corals for the marine reef aquarium trade. The trade is still rapidly evolving, creating challenges including the addition of new species that outpace effective management strategies. New species in the live coral trade initially command high prices, but as they become common the price radically decreases with feedback effects to the trade. To understand these trends, 21 years of live coral import data for the United States were assessed. Trade increased over 8% per year between 1990 until the mid-2000s, and has since decreased by 9% annually. The timing of the peak and decline varies among species, and is a result of the rising popularity of mini-reef ecosystem aquariums, the global financial crisis, and an increase in aquaculture production. The live coral trade offers opportunities for coral reef ecosystem conservation and sustainable economic benefits to coastal communities, but realization of these externalities will require effective data tracking.
Cover Caption
In a remote area on Guadalcanal in the Solomon Islands, the women of Marau Sound have been growing corals for the marine aquarium trade for nearly two decades. While these female entrepreneurs have had their fair share of challenges ranging from logistical hurdles to armed conflict, they continue to gather regularly to “sew” coral frags onto racks, tend to the coral gardens they have planted, and, harvest market sized corals for sale. Using the simplest of materials, they have learned to develop innovative relationships with reef resources that have actually yielded new reefs and have provided a salable, sustainable product that has brought real and consistent income to the village. As any outsider would observe, sitting on the beach watching the women work whilst their children splashed about them in the surf, you are instantly impressed by how well this community-based approach worked, in fact, it has worked far better than the numerous get-rich quick schemes, high-dollar industrial scale resource extraction ventures, or foreign NGO projects that litter the region. While it’s not perfect, the lady coral farmers of Marau Sound, Solomon Islands, are proving that the aquarium trade can provide simultaneous economic and ecological benefi ts that other small rural communities should emulate. Photo was taken by Ret Talbot (http://www.RetTalbot.com) in Marau Sound, Guadalcanal, Solomon Island in March 2011.
