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After being hit by waves, the vortex scourge will emit a blue fluorescence, forming a show of blue tears.Picture: Lianjiang County Government Industrial Development Office / provided
Matsu’s famous “Blue Tears”, listed by CNN as the 15 wonders of the world, can only be seen from March to July each year, but this year there is a rare outbreak and it can be seen until October. Academics studying “Blue Tears” believe that, The reason behind this is closely related to Chinese sand-pumping boats. It is estimated that large numbers of Chinese sand-pumping boats surround the sea, greatly disturbing the ocean, changing marine ecology, and allowing the noctiluca to multiply.
The research team at National Taiwan Ocean University is led by Professor Jiang Guoping After more than three years of research and monitoring of “Blue Tears”, a press conference was held on the afternoon of the 17th to announce the results. . Jiang Guoping claimed that blue tears are actually the sexual reproduction process of “night worms.” The sprout must often meet some objective environmental conditions, such as dormant “gametes” instantly germinate and sea water temperature is below 27 degrees, so Mazu’s blue tears often appeared in late spring and early summer.
Jiang Guoping mentioned that Matsu’s “blue tears” are related to the flood season of the Minjiang River in China. The snow water in the Minjiang River melts from April to June each year. A large amount of fresh water provides inorganic nutrients such as nitrogen, silicon and phosphorus, and provides nutrients for the growth of microalgae. Noctilucent worms, which depend on diatoms for their sustenance, can grow in large numbers and form an “algae bloom” phenomenon, which is the best period for the “tear condition” of blue tears. However, when the flood season ends, the water in the Minjiang River is reduced and the growth of diatoms is restricted, the noctiluca will feel a “survival crisis” and then begin to “reproduce sexually” and produce dormant “gametes”. These gametes will sink into the sediments on the seabed, waiting for the environment and temperature to germinate again.
Jiang Guoping pointed out that this year’s “blue tears” burst and it was determined that a large number of Chinese sand bombs surrounded the sea, which not only allowed gametes from the seabed to germinate, but also disturbed the source of nutrients. from the seabed, allowing noctiluca to reproduce. Subsequent research teams will collect sediment samples from the seabed, if a large number of noctiluca gametes are found on the seabed, this hypothesis can be confirmed.
It is understood that noctiluca tends to grow slowly and takes 2 to 4 days to duplicate. However, thanks to the effort of Haida’s team, artificial cultivation has become possible, at present, blue tears can be seen throughout the year at the Blue Tears Ecological Museum in Matsu, which can also artificially cause large outbreaks. The Haida team’s next goal is to develop the Blue Tears Forecast app to make it easier for the public to “chase the tears.”
Matsu’s famous “Blue Tears”, listed by CNN as the 15 wonders of the world, are only visible from March to July each year, but this year there is a rare outbreak and it can be seen until October. Academics studying “Blue Tears” believe that, the reason behind this is closely related to Chinese sand-pumping boats. Large numbers of Chinese sand-pumping boats are considered to surround the sea, greatly disturbing the ocean, changing marine ecology, and allowing the noctiluca to multiply.
Professor Jiang Guoping, a research team from Taiwan National Oceanic University, noted that this year’s “blue tears” burst. It was determined that a large number of Chinese sand bombs encircled the sea, which not only allowed seabed gametes to germinate, but also disturbed seabed nutrient sources, allowing noctilucas to reproduce. Subsequent research teams will collect sediment samples from the seabed, and if a large number of noctiluca gametes are found on the seabed, this hypothesis can be confirmed.
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