Harmful Algal Blooms (HABs): track them like a scientist

Harmful Algal Blooms (HABs): track them like a scientist
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有害藻华 (HAB):像科学家一样追踪它们

DOI:
10.1080/00368121.2019.1691968
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发表时间:
2019
期刊:
Science activities
影响因子:
--
通讯作者:
Richlen, M.L.
Richlen, M.L.
中科院分区:
--
文献类型:
--
作者:
Curran, M.C.;Richlen, M.L.

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海洋浮游植物构成了海洋食物网的基础,并产生了地球上大部分的氧气。在海洋中的许多浮游植物中,有几十种会产生强大的毒素,在高浓度的情况下会形成所谓的有害藻华(HABs)或“赤潮”,使海水变色。管理人员和科学家一直在监测沿海水域和贝类资源中有害藻华及其毒素的情况,以确保海产品的安全,并了解发生藻华的原因。这个教育活动的重点是一个突出的HAB物种,导致麻痹性贝类中毒(PSP)。学生将了解赤潮和PSP的重要性,以及科学家如何收集和使用数据来了解和预测藻华。学生们将绘制科学家多年取样收集的有害藻华物种的数据。学生还将绘制不同时间和地区的结果,报告观察到的模式,并完成适合年级的计算。最后,小组讨论将集中于确定是否存在可能影响贝类养殖场关闭位置的地理模式。鉴于2017-2018年佛罗里达红潮导致野生动物大量死亡和海滩关闭,以及2019年因接触淡水蓝藻(蓝藻)大量繁殖而导致狗死亡的广泛报道,这一活动是及时的。
Marine phytoplankton comprise the foundation of oceanic food webs and generate most of the Earth’s oxygen. Of the many phytoplankton species in the ocean, a few dozen produce potent toxins, and at high concentrations can form what are called Harmful Algal Blooms (HABs) or “red tides” that can discolor marine waters. Managers and scientists have been monitoring coastal waters and shellfish resources for HABs and their toxins to ensure seafood safety and understand why blooms occur. This educational activity focuses on a prominent HAB species that causes paralytic shellfish poisoning (PSP). Students will learn about the importance of HABs and PSP, as well as how scientists collect and use data to understand and predict blooms. Students will plot data on HAB species collected by scientists over multiple years of sampling. Students will also plot results over time and across regions, report on observed patterns, and complete grade-appropriate calculations. Lastly, group discussion will focus on determining whether geographic patterns exist that might influence where shellfish beds are closed. This activity is timely given the widespread wildlife mortalities and beach closures due to Florida red tide in 2017-2018, as well as widely publicized dog deaths in 2019 caused by exposure to freshwater cyanobacteria (blue-green algae) blooms.
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