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Harmful algal blooms in inland waters 内陆水域有害藻类大量繁殖
Pub Date : 2024-08-27 DOI: 10.1038/s43017-024-00578-2
Lian Feng, Ying Wang, Xuejiao Hou, Boqiang Qin, Tiit Kuster, Fan Qu, Nengwang Chen, Hans W. Paerl, Chunmiao Zheng
Harmful algal blooms can produce toxins that pose threats to aquatic ecosystems and human health. In this Review, we outline the global trends in harmful algal bloom occurrence and explore the drivers, future trajectories and potential mitigation strategies. Globally, harmful algal bloom occurrence has risen since the 1980s, including a 44% increase from the 2000s to 2010s, especially in Asia and Africa. Enhanced nutrient pollution owing to urbanization, wastewater discharge and agricultural expansion are key drivers of these increases. In contrast, changes have been less substantial in high-income regions such as North America, Europe and Oceania, where policies to mitigate nutrient pollution have stabilized bloom occurrences since the 1970s. However, since the 1990s, climate warming and legacy nutrient pollution have driven a resurgence in toxic algal blooms in some US and European lakes, highlighting the inherent challenges in mitigating harmful blooms in a warming climate. Indeed, advancing research on harmful algal bloom dynamics and projections largely depends on effectively using data from multiple sources to understand environmental interactions and enhance modelling techniques. Integrated monitoring networks across various spatiotemporal scales and data-sharing frameworks are essential for improving harmful algal bloom forecasting and mitigation. Harmful algal blooms degrade inland aquatic ecosystems and pose a risk to water security. This Review explores the underlying drivers of hotspots and global trends in harmful algal blooms, and identifies potential solutions for bloom monitoring and mitigation.
有害藻华可产生毒素,对水生生态系统和人类健康构成威胁。在本综述中,我们概述了全球有害藻华发生的趋势,并探讨了其驱动因素、未来轨迹和潜在的缓解策略。在全球范围内,有害藻华的发生率自 20 世纪 80 年代以来不断上升,其中 2000 年代至 2010 年代上升了 44%,尤其是在亚洲和非洲。城市化、废水排放和农业扩张造成的营养物污染加剧是导致藻华增加的主要原因。相比之下,北美、欧洲和大洋洲等高收入地区的变化幅度较小,自 20 世纪 70 年代以来,这些地区减缓营养污染的政策稳定了水花的发生。然而,自 20 世纪 90 年代以来,气候变暖和遗留的营养物污染导致美国和欧洲的一些湖泊中有毒藻华再次出现,这凸显了在气候变暖的情况下减轻有害藻华的内在挑战。事实上,推进有害藻华动态和预测研究在很大程度上取决于有效利用多种来源的数据,以了解环境相互作用并提高建模技术。不同时空尺度的综合监测网络和数据共享框架对于改善有害藻华的预测和缓解至关重要。有害藻华使内陆水生生态系统退化,并对水安全构成风险。本综述探讨了藻类密集孳生的热点地区和全球趋势的根本原因,并确定了藻类密集孳生监测和缓解的潜在解决方案。
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引用次数: 0
Ground-based radar interferometry measures strain in sea ice 地基雷达干涉测量法测量海冰应变
Pub Date : 2024-08-22 DOI: 10.1038/s43017-024-00592-4
Emily R. Fedders
Emily Fedders explains how Gamma Portable Radar Interferometery can be used to estimate strain in sea ice.
Emily Fedders 解释了伽马便携式雷达干涉仪如何用于估算海冰的应变。
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引用次数: 0
From academia to a career in ocean sustainability 从学术界到海洋可持续发展领域的职业生涯
Pub Date : 2024-08-13 DOI: 10.1038/s43017-024-00589-z
Clare Davis, Tom Pickerell
To explore career opportunities outside of academia, Nature Reviews Earth & Environment interviewed Tom Pickerell about their career path from PhD student to Global Director of the Ocean Program at the World Resources Institute (WRI).
为了探索学术界以外的职业发展机会,《自然-地球与环境》杂志采访了汤姆-皮克尔(Tom Pickerell),了解他们从博士生到世界资源研究所(WRI)海洋项目全球总监的职业道路。
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引用次数: 0
Tailings storage facilities, failures and disaster risk 尾矿储存设施、故障和灾害风险
Pub Date : 2024-08-06 DOI: 10.1038/s43017-024-00576-4
Karen A. Hudson-Edwards, Deanna Kemp, Luis Alberto Torres-Cruz, Mark G. Macklin, Paul A. Brewer, John R. Owen, Daniel M. Franks, Eva Marquis, Christopher J. Thomas
Mining generates 13 billion tonnes per year of potentially toxic wet slurry waste, called tailings, commonly deposited in tailings storage facilities (TSF). Since 1915, 257 TSF failures have occurred, releasing a total of ~250 million m3 of tailings, destroying areas up to ~5,000 km2, killing an estimated 2,650 people and impacting ~317,000 people through displacement, property damage, and risks to livelihoods and health. In this Review, we provide an interdisciplinary approach to understanding the causes, effects and response to TSF failures, applying a disaster risk reduction framework. TSF failures can occur owing to earthquakes, overtopping, weak foundations and liquefaction, among other mechanisms. The severities and volumes of TSF failures have increased since the year 2000, owing to increasing mine waste generation from the exploitation of larger, lower-grade deposits. Despite the increasingly severe impacts, the mining industry has been hesitant to use the term ‘disaster’ to analyse TSF failure, presumably to avoid liability. TSF failures should be considered as disasters when they cause severe disruption to the functioning of ecological and social systems. Future research should build on attempts to link tailings facility locations to situated risk factors by improving spatial and time series analysis, reducing reliance on corporate disclosures, and increasing the visibility of priority locations and patterns of concern. Mine tailings are voluminous and often toxic wastes, whose management is a global safety and sustainability challenge. This Review summarizes the major tailings storage facility disasters and impacts, emphasizing the urgent need for risk reduction approaches for management and policy.
采矿业每年产生 130 亿吨可能有毒的湿泥浆废物,称为尾矿,通常堆放在尾矿库 (TSF)。自 1915 年以来,共发生了 257 起尾矿库溃坝事故,释放出总计约 2.5 亿立方米的尾矿,毁坏面积达约 5,000 平方公里,造成约 2,650 人死亡,约 31.7 万人流离失所、财产损失以及生计和健康风险。在本《综述》中,我们采用跨学科方法,在减少灾害风险的框架下,了解台风暴发的原因、影响和应对措施。除其他机制外,地震、倾覆、地基薄弱和液化都可能导致临时安全设施失效。自 2000 年以来,由于开采规模较大、品位较低的矿藏所产生的矿山废料越来越多,导致临时采空区坍塌的严重程度和数量不断增加。尽管影响越来越严重,但采矿业一直不愿使用 "灾难 "一词来分析 TSF 故障,可能是为了避免承担责任。当 TSF 故障对生态和社会系统的运行造成严重破坏时,就应将其视为灾难。未来的研究应通过改进空间和时间序列分析、减少对企业披露信息的依赖以及提高重点关注地点和模式的可见度,在尝试将尾矿设施位置与所处风险因素联系起来的基础上更进一步。
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引用次数: 0
The Indian Ocean Dipole in a warming world 变暖世界中的印度洋偶极子
Pub Date : 2024-07-30 DOI: 10.1038/s43017-024-00573-7
Guojian Wang, Wenju Cai, Agus Santoso, Nerilie Abram, Benjamin Ng, Kai Yang, Tao Geng, Takeshi Doi, Yan Du, Takeshi Izumo, Karumuri Ashok, Jianping Li, Tim Li, Sebastian McKenna, Shuangwen Sun, Tomoki Tozuka, Xiaotong Zheng, Yi Liu, Lixin Wu, Fan Jia, Shijian Hu, Xichen Li
The Indian Ocean Dipole (IOD) strongly affects the climate of the Indo-Pacific. Observations suggest a shift towards stronger and earlier positive IOD (pIOD) events alongside an increased amplitude of sea surface temperature (SST) anomalies, but uncertainty remains, impeding assessments of ongoing changes. In this Review, we synthesize the available knowledge of projected changes in the IOD during the twenty-first century under anthropogenic warming. Compared to observations, models struggle to simulate the Bjerknes feedback, asymmetry in the strength of positive and negative IOD anomalies and El Niño–Southern Oscillation or monsoonal forcings. Yet several models do capture important feedbacks reasonably well and offer useful tools with which to assess IOD evolution. A pIOD-like SST warming pattern (an enhanced west-minus-east SST gradient) alongside shifts in feedback process drive corresponding changes to the IOD. Over the course of the twenty-first century, robust changes include: enhanced IOD SST variability (as measured by the first principal component of spring SST variability, not the dipole mode index); an increase in strong rainfall pIOD events; an increase and decrease in the frequency of strong-pIOD and moderate-pIOD, respectively, as defined by SST; and an increase in the frequency of early-pIOD events. Palaeo evidence reveals similar increases in the magnitude and frequency of pIOD events underpinned by a similar pattern of mean state change (Last Glacial Maximum, post-1960), reinforcing IOD projections. Sustained international efforts are needed to improve IOD simulations and reduce projection uncertainties. The Indian Ocean Dipole (IOD) exerts strong control on the Indo-Pacific climate. This Review outlines twenty-first-century changes in the IOD, noting robust increases in eastern pole sea surface temperature variability, more frequent strong and early positive IOD events, and less frequent moderate positive IOD events.
印度洋偶极子(IOD)强烈影响着印度洋-太平洋的气候。观测结果表明,随着海表温度(SST)异常振幅的增加,印度洋正偶极(pIOD)事件正向更强、更早的方向发展,但不确定性依然存在,阻碍了对持续变化的评估。在这篇综述中,我们综合了关于 21 世纪人为变暖条件下 IOD 预计变化的现有知识。与观测结果相比,模式在模拟比耶克内斯反馈、IOD 正负异常强度的不对称性、厄尔尼诺-南方涛动或季风影响等方面存在困难。然而,有几个模式确实很好地捕捉到了重要的反馈,为评估 IOD 演变提供了有用的工具。类似于 pIOD 的 SST 变暖模式(西减东的 SST 梯度增强)以及反馈过程的变化都会引起 IOD 的相应变化。在 21 世纪期间,强有力的变化包括:IOD SST 变异性增强(以春季 SST 变异性的第一个主成分而不是偶极模式指数来衡量);强降雨 pIOD 事件增加;根据 SST 的定义,强 pIOD 和中 pIOD 的频率分别增加和减少;早期 pIOD 事件的频率增加。古生物学证据显示,在相似的平均状态变化模式(最后冰川极盛时期,1960 年后)的支撑下,pIOD 事件的规模和频率也有类似的增加,从而加强了 IOD 预测。需要国际社会持续努力,改进国际海洋学年模拟,减少预测的不确定性。
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引用次数: 0
Mentors as career investors to empower women’s leadership in geosciences 导师作为职业投资者,增强妇女在地球科学领域的领导力
Pub Date : 2024-07-29 DOI: 10.1038/s43017-024-00581-7
Mimi Rose Abel, Mona Behl, Anna Kladzyk Constantino, Anne Kellerman
Geosciences are one of the least gender-diverse fields, with women representing ~33% and ~39% of those employed in the USA and UK, respectively. Institutionalized and incentivized culturally responsive mentorship through establishment of career investors offers an accelerated path toward transforming geoscience culture and leadership.
地球科学是性别最不多元化的领域之一,在美国和英国,女性分别占就业人员的 33% 和 39%。通过建立职业投资人制度化和激励性的文化响应导师制,为改变地球科学文化和领导力提供了一条捷径。
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引用次数: 0
Measuring light pollution with smart photometers 用智能光度计测量光污染
Pub Date : 2024-07-24 DOI: 10.1038/s43017-024-00580-8
Mario Casado Diez
Mario Casado Díez explains how networks of smart photometers can be used to monitor light pollution in the night sky.
Mario Casado Díez 解释了如何利用智能光度计网络监测夜空中的光污染。
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引用次数: 0
Trends, risks and opportunities in environmental nanotechnology 环境纳米技术的趋势、风险和机遇
Pub Date : 2024-07-23 DOI: 10.1038/s43017-024-00567-5
Xiaochuan Huang, Mélanie Auffan, Matthew J. Eckelman, Menachem Elimelech, Jae-Hong Kim, Jérôme Rose, Kuichang Zuo, Qilin Li, Pedro J. J. Alvarez
Engineered nanomaterials (ENMs), intentionally synthesized materials with sizes less than 100 nm in at least one dimension, have numerous potential environmental applications, such as pollution remediation and water treatment. However, concerns regarding their potential health and environmental impacts have been raised. In this Review, we assess the opportunities of ENMs in environmental applications versus their potential public and environmental health risks, focusing on water treatment and reuse, and identify strategies for their responsible use. Life-cycle analyses indicate that the highest potential environmental and health impacts of ENMs used in commercial products are associated with production rather than incidental release during use. Typically, the detected or predicted ENM concentrations are 1 to 4 orders of magnitude lower than their respective predicted no-effect concentrations. In addition, ENMs often undergo passivating transformations, such as agglomeration and oxidation, reducing risks after release. Therefore, the environmental and health risks of ENMs are relatively low. However, some point sources under extreme scenarios, such as sewage effluent, can potentially increase localized risks. Adopting green chemistry and immobilization strategies can further limit the release of ENMs, minimizing their potential discharge into the environment. Such strategies to reduce toxicity and exposure enable sustainable application of ENMs, such that the environmental benefits could outweigh the risks if managed properly. Engineered nanomaterials (ENMs) have numerous environmental applications, such as in water treatment and reuse. This Review explores the trade-offs between the risks and benefits of environmental ENMs, and highlights that the environmental and health risks of ENMs are relatively low when used responsibly.
工程纳米材料(ENMs)是一种有意合成的材料,至少在一个维度上的尺寸小于 100 纳米,具有许多潜在的环境应用,如污染修复和水处理。然而,人们也对其潜在的健康和环境影响表示担忧。在本综述中,我们以水处理和再利用为重点,评估了 ENMs 在环境应用中的机遇与其潜在的公共和环境健康风险,并确定了负责任地使用 ENMs 的策略。生命周期分析表明,商业产品中使用的 ENMs 对环境和健康的潜在影响最大的是生产过程,而不是使用过程中的偶然释放。通常情况下,检测到或预测到的 ENM 浓度比各自预测的无效应浓度低 1 到 4 个数量级。此外,ENM 通常会发生钝化转化,如结块和氧化,从而降低释放后的风险。因此,ENMs 的环境和健康风险相对较低。不过,在极端情况下,一些点源(如污水)可能会增加局部风险。采用绿色化学和固定化策略可以进一步限制 ENMs 的释放,最大限度地减少其向环境排放的可能性。这种减少毒性和接触的策略能够实现 ENM 的可持续应用,因此,如果管理得当,环境效益可能会大于风险。
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引用次数: 0
Author Correction: The role of biota in the Southern Ocean carbon cycle 作者更正:生物群在南大洋碳循环中的作用
Pub Date : 2024-07-22 DOI: 10.1038/s43017-024-00585-3
Philip W. Boyd, Kevin R. Arrigo, Mathieu Ardyna, Svenja Halfter, Luis Huckstadt, Angela M. Kuhn, Delphine Lannuzel, Griet Neukermans, Camilla Novaglio, Elizabeth H. Shadwick, Sebastiaan Swart, Sandy J. Thomalla
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引用次数: 0
From academia to a career in the space industry 从学术界到航天工业的职业生涯
Pub Date : 2024-07-18 DOI: 10.1038/s43017-024-00582-6
Erin Scott, Graeme Poole
To explore career opportunities outside of academia, Nature Reviews Earth & Environment interviewed Graeme Poole about their career path from postdoctoral researcher to Planetary Protection Officer at Airbus Defence and Space.
为了探索学术界以外的职业发展机会,《自然-地球与环境》杂志采访了格雷姆-普尔(Graeme Poole),了解他们从博士后研究员到空中客车防务与航天公司行星保护官员的职业发展之路。
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引用次数: 0
期刊
Nature Reviews Earth & Environment
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