A major red tide event occurred in waters off Southern California in the spring of 2020, resulting in dazzling displays of bioluminescence along the coast. The spectacle was caused by exceedingly high densities of Lingulodinium polyedra (L. polyedra), a plankton species renowned for its ability to emit a neon blue glow. While the red tide captured the public's attention and made global headlines, the event was also a harmful algal bloom.
Toxins were detected at the height of the bloom that had the potential to harm marine life, and dissolved oxygen levels dropped to near-zero as the extreme biomass of the red tide decomposed. This lack of oxygen led to fish die-offs and other destructive impacts on local ecosystems.
Lucas and former graduate student Bofu Zheng led the work alongside several colleagues in the midst of the red tide event in April and May 2020. The researchers seized the opportunity to deploy sophisticated ocean instruments off the coast of San Diego, resulting in unprecedented measurements. The team's findings were published in the Aug. 28 issue of theThe dinoflagellates—L.
"In the plankton world, they are Michael Phelps," said Lucas, describing the dinoflagellates."For comparison, fast-burst swimming in species like bluefin tuna or shortfin mako is around 9–10 body lengths per second, but only for very short periods. Their exceptional swimming allows L. polyedra to dive to cold depths where they can take up nutrients, allowing these organisms to really bloom and explode in population.
The growth of phytoplankton biomass, or the"bloom," correlated with proportional decreases in nitrate concentrations at depth, linking the important role that swimming phytoplankton have in the development of certain types of red tides. On cloudy days, the subsurface vertical migration was much less apparent, suggesting that the intensity of sunlight is an important trigger for vertical migration.
The researchers also looked at long-term ocean monitoring data captured by the California Cooperative Oceanic Fisheries Investigations , and long-term mooring data maintained by the Ocean Time-Series Group at Scripps Oceanography to see other consequences from the bloom.
日本 最新ニュース, 日本 見出し
Similar News:他のニュース ソースから収集した、これに似たニュース記事を読むこともできます。
California jury awards $3.75 million to protester hit by LAPD projectile during 2020 protestssAsim Jamal Shakir Jr., a protestor who was shot twice by the Los Angeles Police Department using hard-foam projectiles, has been awarded $3.75 million.
続きを読む »
California jury awards $3.75 million to protester hit by LAPD projectile during 2020 protestsThe jury ruled that the Los Angeles Police Department was negligent when Asim Jamal Shakir Jr. was shot twice by hard-foam projectiles.
続きを読む »
Temporary lane to relieve I-15 traffic between Southern California and Las VegasStarting Sunday, Caltrans will open a temporary lane on southbound Interstate 15 from 10 a.m. to 8 p.m. Sundays and Mondays to alleviate traffic heading toward Southern California and away from Sin City.
続きを読む »
College Football San Jose State vs Southern California Box ScoreSan Jose State Spartans vs Southern California Trojans College Football game box score for Aug 26, 2023.
続きを読む »
Walters: Bay Area beginning to resemble chaotic Southern CaliforniaThe arc of history may be changing because the San Francisco-San Jose-Oakland region has hit a bad patch.
続きを読む »
Bay Area is beginning to resemble chaotic and politically divided Southern CaliforniaThe Bay Area has enjoyed economic and political dominance but the region's once-united front is cracking as a dispute over tolls revealed.
続きを読む »