The removal of a check dam from the Shei-pa National Park in 2011 has led to a dramatic increase in the population of the critically endangered Formosan landlocked salmon, a professor said yesterday.
The number of salmon has grown from fewer than 500 in 2001 to 5,400 this year, said National Chung Hsing University professor Lin Hsing-juh (林幸助), who started a 10-year project in 2004 with 20 other academics to monitor and research the fish.
The 15m by 3m Check Dam No. 1 of the Chichiawan Creek, one of 10 built on the river to reduce channel erosion and prevent sediment from filling a downstream reservoir, was torn down in May 2011.
The research team found that the dam left the fish vulnerable to big storms. When the creek was hit by a typhoon or flooding, the salmon would be flushed from their natural habitat in the creek’s upper reaches to points downstream, Lin said.
The cold-water fish would try to migrate upstream, but were prevented by the dam, leaving them to die in the warmer water of the creek’s lower reaches, Lin said.
During each major storm, one-third of the Formosan landlocked salmon in the region perished, he said.
The current salmon population has nearly reached the creek’s maximum capacity of 5,800 salmon, Lin said, but he added that the species is threatened by pollution caused by the production of high-mountain vegetables, fruit and tea grown nearby on Wuling Farm (武陵農場).
Nitrates in the fertilizers found in washed off soil pollute the creek and prevent the salmon from breathing, he said.
The species, a holdover from the last Ice Age, needs unpolluted waters to survive and is now found only in the country’s Cijiawan Creek (七家灣溪) and Gaoshan Creek (高山溪) in the upper reaches of the Dajia River (大甲溪).
RESOLUTIONS DEBATE: Taiwan’s allies said that UN and WHA resolutions cited by China and other nations ‘do not determine Taiwan’s participation in WHO activities’ A proposal to invite Taiwan to this year’s World Health Assembly (WHA) was rejected on Monday, resulting in Taipei’s absence from the annual meeting for a ninth consecutive year, although partners spoke up for Taiwan’s participation at the first day of the meeting. The first agenda item after the opening was a “two-on-two debate” on a proposal to invite Taiwan to participate at the WHA as an observer. Similar to previous years, two countries made statements in favor of the proposal, while two others expressed their opposition. Philippine Secretary of Health Teodoro Herbosa, president of the 78th WHA, accepted the WHA General Committee’s
Palauan President Surangel Whipps Jr arrived in Taiwan last night to kick off his first visit to the country since beginning his second term earlier this year. After arriving at Taoyuan International Airport at around 6:30 pm, Whipps and his delegation were welcomed by Minister of Foreign Affairs Lin Chia-lung (林佳龍). Speaking to gathered media, the Palauan leader said he was excited and honored to be back in Taiwan on his first state visit to Taiwan since he was sworn in this January. Among those traveling with Whipps is Minister of State Gustav N. Aitaro, Public Infrastructure
Premier Cho Jung-tai (卓榮泰) on Friday laid out the Cabinet’s updated policy agenda and recapped the government’s achievements ahead of the one-year anniversary of President William Lai’s (賴清德) inauguration. Cho said the government had made progress across a range of areas, including rebuilding Hualien, cracking down on fraud, improving pedestrian safety and promoting economic growth. “I hope the public will not have the impression that the Cabinet only asked the legislature to reconsider a bunch of legal amendments,” Cho said, calling the moves “necessary” to protect constitutional governance and the public’s interest. The Cabinet would work toward achieving its “1+7” plan, he said. The
Nvidia founder and CEO Jensen Huang (黃仁勳) hosted a dinner in Taipei last night with key Taiwanese suppliers to celebrate the successful mass production of the company’s new Blackwell AI systems. Speaking to the media earlier yesterday, Huang thanked Nvidia’s Taiwanese partners for their contributions to the company’s ecosystem, while also sharing his plans to meet with Taiwan Semiconductor Manufacturing Co (TSMC) founder Morris Chang (張忠謀). In response to rumors that Nvidia will launch a downgraded Hopper H20 chip for China in July, Huang dismissed the reports, saying, “That is not true.” He clarified that there
RSS