Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo 77580, Mexico.
Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prolongación Avenida Niños Héroes S/N, Puerto Morelos, Quintana Roo 77580, Mexico.
Mar Pollut Bull. 2019 Sep;146:201-205. doi: 10.1016/j.marpolbul.2019.06.015. Epub 2019 Jun 15.
In 2018, the Mexican Caribbean coast received a massive influx of pelagic Sargassum spp. that accumulated and decayed on beaches producing organic decomposition products that made the water turbid and brown. Between May and September of the same year there were several reports of mass mortality of marine biota in this area. From these reports we estimate that organisms belonging to 78 faunal species died as result of this event, with demersal neritic fish and Crustacea being the most affected groups. The cause of mortality appears to be the combined effect of high ammonium and hydrogen sulfide concentrations, together with hypoxic conditions. If massive arrival of pelagic Sargassum spp. continues and algae is left to decay on the beach in large volumes then deterioration in water quality could affect coral reefs close to shore. Furthermore, barriers placed in lagoons to intercept the Sargassum spp. before it reaches the beach could impact reef fauna if the algae is left to die and sink on site.
2018 年，墨西哥加勒比海岸遭遇了大量的远洋马尾藻属海藻的涌入，这些海藻在海滩上堆积和腐烂，产生了有机分解产物，使水变得浑浊和棕色。同年 5 月至 9 月，该地区发生了多起海洋生物大量死亡的报告。根据这些报告，我们估计有 78 个动物物种的生物因这次事件而死亡，底栖近岸鱼类和甲壳类动物受影响最大。死亡的原因似乎是高氨和硫化氢浓度以及缺氧条件的综合影响。如果大量的远洋马尾藻属海藻继续涌入，并且藻类大量堆积在海滩上腐烂，那么水质的恶化可能会影响到近岸的珊瑚礁。此外，如果将马尾藻属海藻拦截在泻湖中的障碍物被放置在藻类死亡和下沉的地方，也可能会对珊瑚礁动物区系造成影响。
