Sat, Apr 26, 2025 page2

• Initiative to reverse loss of seaweed launched

  • By Jonathan Chin and Wu Po-hsuan / Staff reporter, with staff writer
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  Business Today on Tuesday launched an initiative in collaboration with academia and government agencies to reverse the loss of seaweed habitats in the seas around Taiwan.

  Seaweeds in the nation’s waters are experiencing a precipitous decline, especially on the ocean floor around the Penghu islands, where kelp coverage has decreased by 96 percent, the Chinese-language weekly said.

  The publication is to establish a center for seaweed recovery at National Taiwan University, working with associate professor of fisheries science Wu Yu-chi (吳育騏) and Nobel International Biotechnology founder Lee Kuan-cheng (李冠徵), it said.

  

  Seeds collected from seagrass beds near Haikou Port in Pingtung County sprout in a photograph taken on Tuesday.

  Photo: Wu Po-hsuan, Taipei Times

  The National Park Service — another partner of the initiative — is to build a gene bank for kelp species indigenous to the waters around the Pratas Islands (Dongsha Islands, 東沙群島), it said.

  The service would gather 10,000 kelp seedlings and use the information to study factors affecting seaweed growth, it said.

  Live samples would be replanted on the seabed near the Penghu islands in a bid to regrow the crucial kelp colony, it added.

  Business Today president Liang Yung-huang (梁永煌) said the magazine has long been engaged in marine ecology projects, including cleanups that have removed 15,000 tonnes of trash from beaches since 2021.

  This year’s program to protect the ocean environment and restore seaweed colonies is part of this commitment, Liang said.

  National Park Service Director-General Wang Cheng-chi (王成機) said Dongsha Atoll National Park is home to Taiwan’s largest kelp colony.

  Seaweed colonies in the ocean absorb large amounts of carbon and their health is a key factor in the effort to counter climate change, Wang said.

  The service welcomes the private sector contributing to government-run kelp recovery programs in Kenting National Park and the Dongsha Atoll National Park, he said.

  The Ocean Conservation Administration has been mapping the littoral and maritime environment since 2018, Deputy Director-General Shih Yi-che (施義哲) said.

  The studies found that a seaweed colony off the Pratas Islands has a surface area of 7,000 hectares, he said, adding that Taiwan has 22 colonies with a combined size of 7,800 hectares.

  Kelp plays a crucial role in carbon regulation, accounting for 85 percent of the nation’s blue carbon capacity, he said, referring to emissions captured by the ocean.

  Penghu’s seaweeds are key to biodiversity as they sustain more than 70 species in the archipelago’s environs, said Chang Chin-yi (張錦宜), who heads the Penghu branch of the Fisheries Research Institute.

  The livelihood of Penghu fishers and the culture of the islands depend on fish living off the local kelp colony, he said.

  The government has restored 3,000m2 of seaweed coverage in the waters around the islands in the past decade, he added.

  National Taiwan University College of Life Sciences dean Chiang Bor-luen (江伯倫) said that global warming’s impact on the seas would threaten the global food supply.

  The public should be mindful of the need to conserve the ocean and act accordingly, he said.

  Kelp colonies not only provide fish for the fishing industry, but also help the nation cope with rising sea levels by absorbing carbon and shielding the coastline, National Chung Hsing University professor of life science Lin Hsing-juh (林幸助) said.
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