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Widespread influence of artificial light at night on ecosystem metabolism 夜间人造光对生态系统代谢的广泛影响
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-12 DOI: 10.1038/s41558-025-02481-0
Alice S. A. Johnston, Jiyoung Kim, Jim A. Harris
Artificial light pollution is increasing worldwide with pervasive effects on ecosystem structure and function, yet its influence on ecosystem metabolism remains largely unknown. Here we combine artificial light at night (ALAN) intensity metrics with eddy covariance observations across 86 sites in North America and Europe to show that ALAN indirectly decreases annual net ecosystem exchange by enhancing ecosystem respiration (Re). At half-hourly and daily scales, we detect consistent nonlinear interactions between ALAN and night duration, with Re increasing under higher ALAN and partially decoupling from gross primary production. At the annual scale, gross primary production shows no direct ALAN response and is instead influenced by the growing season length and urban proximity, whereas Re responds more strongly and consistently across timescales. Our findings show that ALAN disrupts the fundamental energetic constraints on ecosystem metabolism, warranting the inclusion of light pollution in global change and carbon–climate feedback assessments. The authors combine light intensity data with eddy covariance observations from 86 sites to show that artificial light at night increases ecosystem respiration and alters carbon exchange, with impacts shaped by diel cycles and seasonal dynamics.
在世界范围内,人工光污染日益严重,对生态系统的结构和功能产生了普遍的影响,但对生态系统代谢的影响尚不清楚。在此,我们将北美和欧洲86个站点的夜间人造光(ALAN)强度指标与涡动相关方差观测相结合,表明ALAN通过增强生态系统呼吸间接减少了年净生态系统交换(R e)。在半小时和日尺度上,我们发现ALAN与夜间持续时间之间存在一致的非线性相互作用,当ALAN较高时,R e增加,并且与初级生产总量部分脱钩。在年尺度上,初级生产总值没有直接的ALAN响应,而是受到生长季节长度和城市邻近程度的影响,而re在时间尺度上的响应更为强烈和一致。我们的研究结果表明,ALAN破坏了生态系统代谢的基本能量约束,有必要将光污染纳入全球变化和碳-气候反馈评估。
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引用次数: 0
Artificial light reduces ecosystem carbon sinks 人造光减少了生态系统的碳汇
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-12 DOI: 10.1038/s41558-025-02499-4
Yaoping Cui, Jinwei Dong
As artificial light encroaches upon cities and countryside, natural darkness recedes and circadian rhythms shift in regions worldwide. Now, a study reveals that bright nights are negatively impacting the carbon sinks of ecosystems.
随着人造光侵入城市和农村,自然黑暗逐渐消退,世界各地的昼夜节律发生了变化。现在,一项研究表明,明亮的夜晚会对生态系统的碳汇产生负面影响。
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引用次数: 0
Climate change drives low dissolved oxygen and increased hypoxia rates in rivers worldwide 气候变化导致全球河流溶解氧降低,缺氧率增加
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-11 DOI: 10.1038/s41558-025-02483-y
Duncan J. Graham, Marc F. P. Bierkens, Edward R. Jones, Edwin H. Sutanudjaja, Michelle T. H. van Vliet
Increased water temperatures under climate change will probably cause decreases in dissolved oxygen and an associated increase in the number of days with hypoxia. This could have major consequences for freshwater ecosystems, but the extent of this threat remains unclear. Here we analyse trends in dissolved oxygen concentrations and days with stress and hypoxia in rivers worldwide between the periods 1980–2019 and 2020–2100 under global change. To achieve this, we train a hybrid process-based and machine learning model on approximately 2.6 million observations of dissolved oxygen, and we apply this model under both past and future conditions globally. The model projects significant decreasing trends in dissolved oxygen in most of the world’s rivers, resulting in on average 8.8 ± 2.3 more hypoxia days per decade globally between the years 2020 and 2100, and indicating a potentially major threat to freshwater ecosystems worldwide. Dissolved oxygen concentrations are expected to decline with rising water temperatures under climate change. This study projects declining oxygen levels for most rivers globally and an increase in hypoxic days by the end of the century, with implications for ecosystem and fish health.
气候变化导致的水温升高可能会导致溶解氧的减少和缺氧天数的增加。这可能会对淡水生态系统产生重大影响,但这种威胁的程度尚不清楚。在这里,我们分析了全球变化下1980-2019年和2020-2100年期间全球河流中溶解氧浓度和压力和缺氧天数的趋势。为了实现这一目标,我们在大约260万溶解氧观测数据上训练了一个基于过程和机器学习的混合模型,并在全球范围内将该模型应用于过去和未来的条件。该模型预测了世界上大多数河流中溶解氧的显著减少趋势,导致2020年至2100年间全球平均每十年缺氧天数增加8.8±2.3天,并表明全球淡水生态系统面临潜在的重大威胁。在气候变化的影响下,随着水温的升高,溶解氧浓度预计会下降。这项研究预测,到本世纪末,全球大多数河流的含氧量将下降,缺氧天数将增加,这对生态系统和鱼类健康都有影响。
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引用次数: 0
Hybridization mitigates climate change risk in mountainous birds 杂交减轻了山地鸟类的气候变化风险
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-10 DOI: 10.1038/s41558-025-02485-w
Shuai Zhang, Yilin Chen, Wenqing Zang, Xinlai Wu, Per G. P. Ericson, Fumin Lei, Yanhua Qu
Climate change is rapidly driving environmental shifts, posing an increasing threat to global biodiversity. Interspecific introgression—in which genetic material is transferred from one species to another following hybridization—may facilitate climate adaptation by introducing new genetic variation, which could mitigate species’ vulnerability to changing conditions. Here, using population and ecological genomic approaches and genetic offset modelling for future climates, we show that hybrid mountainous birds showed reduced vulnerability to climate change compared with non-hybrid counterparts. While geographic isolation and ecological heterogeneity promoted species divergence and distinct climatic niche requirements, gene flow persists at contact zones between these species. Maintaining current gene flow rates is projected to buffer against climate change risks over the next 40 generations. These findings demonstrate the role of interspecific introgression in enhancing climate resilience and future survival, and emphasize the conservation importance of preserving gene flow among species with narrow environmental tolerances. Using population and ecological genomic approaches, the authors demonstrate the potential for interspecific introgression—the transfer of genetic material following hybridization—to reduce climate change vulnerability. Their findings emphasize the importance of preserving interspecific connectivity.
气候变化正在迅速推动环境变化,对全球生物多样性构成越来越大的威胁。种间渗入——遗传物质在杂交后从一个物种转移到另一个物种——可能通过引入新的遗传变异来促进气候适应,从而减轻物种对变化条件的脆弱性。本文利用种群和生态基因组学方法以及未来气候的遗传抵消模型,研究人员发现,与非杂交山地鸟类相比,杂交山地鸟类对气候变化的脆弱性降低。虽然地理隔离和生态异质性促进了物种分化和不同的气候生态位需求,但基因流动在这些物种之间的接触区持续存在。预计维持目前的基因流动速度可以缓冲未来40代的气候变化风险。这些发现证明了种间基因渗入在增强气候适应能力和未来生存方面的作用,并强调了保护具有狭窄环境耐受性的物种之间的基因流动的重要性。利用种群和生态基因组方法,作者证明了种间遗传渗入(杂交后遗传物质的转移)的潜力,以减少气候变化的脆弱性。他们的发现强调了保持种间连通性的重要性。
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引用次数: 0
Pan-basin warming now overshadows robust Pacific Decadal Oscillation 泛盆地变暖现在掩盖了强劲的太平洋年代际涛动
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-07 DOI: 10.1038/s41558-025-02482-z
Allison A. Cluett, Steven J. Bograd, Michael G. Jacox, Mercedes Pozo Buil, Elliott L. Hazen
The Pacific Decadal Oscillation (PDO) has served as a key index linking basin-scale climate variability to marine ecosystem changes in the North Pacific. However, recent apparent breakdowns of PDO–ecosystem correlations have raised concerns about the stability of the mode and its continued relevance in a warming climate. Here we show that basin-wide warming now overwhelms PDO-related sea surface temperature (SST) variability, although neither the PDO’s spatial pattern nor its strength have changed. We introduce the pan-basin pattern as a complementary index to describe the non-stationary SST baseline of the North Pacific. Regional SSTs increasingly reflect the superposition of these two signals, providing an explanation for weakened or inverted PDO–ecosystem correlations. Future use of the PDO index in management will require discerning the effects of internal dynamics from those of absolute changes in SST as extreme and no-analogue ocean conditions driven by interacting natural variability and anthropogenic warming become more common. Natural patterns of climate variability, such as the Pacific Decadal Oscillation (PDO), strongly influence regional climate. This study shows that anthropogenic warming now has greater influence than the PDO on North Pacific sea surface temperatures, with implications for predictability and impacts.
太平洋年代际涛动(PDO)是连接北太平洋海盆尺度气候变率与海洋生态系统变化的重要指标。然而,最近pdo -生态系统相关性的明显破坏引起了人们对模式稳定性及其在气候变暖中的持续相关性的关注。研究表明,尽管PDO的空间格局和强度都没有发生变化,但现在全海盆变暖压倒了PDO相关的海表温度(SST)变率。我们引入泛盆地模式作为一个补充指数来描述北太平洋海温的非平稳基线。区域海温越来越多地反映了这两个信号的叠加,为pdo -生态系统相关性减弱或反转提供了解释。未来在管理中使用PDO指数将需要从海温绝对变化的影响中区分内部动力的影响,因为由自然变率和人为变暖相互作用驱动的极端和无模拟海洋条件变得越来越普遍。
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引用次数: 0
Negative verbal probabilities undermine communication of climate science 消极的语言概率破坏了气候科学的传播
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-06 DOI: 10.1038/s41558-025-02472-1
Marie Juanchich, Karl Halvor Teigen, Theodore G. Shepherd, Miroslav Sirota
The Intergovernmental Panel on Climate Change (IPCC) recommends describing low-probability outcomes using negative verbal probability terms such as unlikely, rather than positive terms such as a small probability. However, we propose that this choice of probability terms might undermine public perception and understanding of climate science. Across eight preregistered experiments (N = 4,150), we find that participants perceive outcomes described with negative low probability terms as reflecting lower scientific consensus than probabilistically equivalent but positively framed terms. The effect persists after controlling for beliefs in climate change, familiarity with the IPCC and political orientation, although it weakens when the projected values exceeded participants’ personal expectations. Participants also associate negative low-probability terms more strongly with extreme outcomes and judge them as less evidence-based than their positive counterparts. We recommend using positive verbal probabilities to communicate comparable levels of uncertainty without undermining perceptions of scientific consensus and evidence. Effective communication of uncertainty is vital for public accurate understanding of climate science. Here the authors find that projections using positive probability terms (for example, a small probability) are perceived as more scientific and trustworthy than those using negative terms (for example, unlikely).
政府间气候变化专门委员会(IPCC)建议使用消极的口头概率术语,如不太可能,而不是积极的术语,如小概率来描述低概率的结果。然而,我们认为这种概率术语的选择可能会破坏公众对气候科学的认知和理解。在8个预先注册的实验(N = 4,150)中,我们发现参与者认为,与概率相等但框架积极的术语相比,负面低概率术语描述的结果反映了较低的科学共识。在控制了对气候变化的信念、对政府间气候变化专门委员会的熟悉程度和政治倾向之后,这种效应仍然存在,尽管当预测值超过参与者的个人期望时,这种效应会减弱。参与者还将消极的低概率术语与极端结果更强烈地联系在一起,并认为它们比积极的术语更缺乏证据。我们建议在不破坏科学共识和证据的情况下,使用积极的口头概率来传达可比较的不确定性水平。
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引用次数: 0
Bees already fly in sub-optimal conditions 蜜蜂已经在次优条件下飞行了
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-05 DOI: 10.1038/s41558-025-02489-6
Tegan Armarego-Marriott
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引用次数: 0
Paris Agreement after 10 years 十年后的巴黎协定
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-05 DOI: 10.1038/s41558-025-02473-0
A decade ago, the Paris Agreement was adopted, which was a landmark for international climate governance. In this infographic, we reflect on the progress that has been made as well as some of the challenges that still lie ahead, such as policy agenda, social change and technology development.
10年前,《巴黎协定》达成,成为国际气候治理的里程碑。在这张信息图中,我们反映了已经取得的进展以及仍然面临的一些挑战,如政策议程、社会变革和技术发展。
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引用次数: 0
Expert retrospective on a decade of the Paris Agreement 《巴黎协定》十年专家回顾
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-05 DOI: 10.1038/s41558-025-02477-w
Carl-Friedrich Schleussner, Paula Castro, Alexandra Lesnikowski, Adelle Thomas, Romain Weikmans, J. Timmons Roberts, Ambuj D. Sagar, Sonja Klinsky, Thomas Bernauer
To mark the tenth anniversary of the Paris Agreement, Nature Climate Change asked experts to reflect on the progress of and barriers to several of its key Articles. They share their thoughts on important policy implications, what has been achieved and missed, as well as future directions.
为纪念《巴黎协定》签署十周年,《自然-气候变化》请专家们反思协定若干关键条款的进展和障碍。他们就重要的政策影响、已取得的成就和未取得的成就以及未来的方向分享了自己的看法。
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引用次数: 0
Future mesoscale horizontal stirring in polar oceans intensified by sea ice decline 未来极地海洋中尺度水平搅拌因海冰减少而加剧
IF 27.1 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES Pub Date : 2025-11-05 DOI: 10.1038/s41558-025-02471-2
Gyuseok Yi, June-Yi Lee, Eun Young Kwon, Sun-Seon Lee, Myeong-Hyeon Kim, Wonsun Park, Karl Stein, Axel Timmermann
Mesoscale horizontal stirring (MHS) is ubiquitous in the oceans, influencing heat and carbon transport, phytoplankton blooms and fish larvae dispersal. The current generation of Earth system models lacks sufficient resolution to properly resolve MHS-relevant small-scale phenomena, such as oceanic mesoscale eddies, leaving it largely unknown how MHS will change in response to greenhouse warming. Here we determine how CO2 doubling and quadrupling will change the surface MHS statistics in Community Earth System Model simulations with 1/10-degree ocean resolution. MHS is analysed using the finite-size Lyapunov exponent, a Lagrangian diagnostic that measures the separation of close trajectories. Projected increases in MHS are expected in the Arctic Ocean and coastal Antarctic regions, driven by enhanced time-mean ocean flow and turbulence which predominantly result from sea ice reduction. The enhanced horizontal stirring in polar oceans implies substantial yet uncertain consequences for tracer transport, nutrient supply and ecosystems under higher CO2 conditions. How mesoscale horizontal stirring changes with warming is not well understood. Here the authors present high-resolution simulations that show that mesoscale horizontal stirring increases in the Arctic Ocean and around Antarctica, mainly due to sea ice reduction.
中尺度水平搅拌(MHS)在海洋中普遍存在,影响着热量和碳的运输、浮游植物的繁殖和鱼类幼虫的扩散。当前一代的地球系统模式缺乏足够的分辨率来正确解决与MHS相关的小尺度现象,如海洋中尺度涡旋,这使得人们在很大程度上不知道MHS将如何响应温室变暖而变化。在这里,我们确定co2加倍和四倍将如何改变社区地球系统模式模拟中1/10度海洋分辨率的地表MHS统计数据。MHS是用有限大小的李雅普诺夫指数来分析的,这是一种拉格朗日诊断,用于测量接近轨迹的分离。由于主要由海冰减少造成的时间平均洋流和湍流增强,预计北冰洋和南极沿海地区的MHS预估将增加。极地海洋中水平搅拌的增强意味着,在二氧化碳含量较高的条件下,对示踪剂运输、营养供应和生态系统会产生重大但不确定的后果。
{"title":"Future mesoscale horizontal stirring in polar oceans intensified by sea ice decline","authors":"Gyuseok Yi, June-Yi Lee, Eun Young Kwon, Sun-Seon Lee, Myeong-Hyeon Kim, Wonsun Park, Karl Stein, Axel Timmermann","doi":"10.1038/s41558-025-02471-2","DOIUrl":"10.1038/s41558-025-02471-2","url":null,"abstract":"Mesoscale horizontal stirring (MHS) is ubiquitous in the oceans, influencing heat and carbon transport, phytoplankton blooms and fish larvae dispersal. The current generation of Earth system models lacks sufficient resolution to properly resolve MHS-relevant small-scale phenomena, such as oceanic mesoscale eddies, leaving it largely unknown how MHS will change in response to greenhouse warming. Here we determine how CO2 doubling and quadrupling will change the surface MHS statistics in Community Earth System Model simulations with 1/10-degree ocean resolution. MHS is analysed using the finite-size Lyapunov exponent, a Lagrangian diagnostic that measures the separation of close trajectories. Projected increases in MHS are expected in the Arctic Ocean and coastal Antarctic regions, driven by enhanced time-mean ocean flow and turbulence which predominantly result from sea ice reduction. The enhanced horizontal stirring in polar oceans implies substantial yet uncertain consequences for tracer transport, nutrient supply and ecosystems under higher CO2 conditions. How mesoscale horizontal stirring changes with warming is not well understood. Here the authors present high-resolution simulations that show that mesoscale horizontal stirring increases in the Arctic Ocean and around Antarctica, mainly due to sea ice reduction.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"15 12","pages":"1315-1323"},"PeriodicalIF":27.1,"publicationDate":"2025-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41558-025-02471-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145440949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Nature Climate Change
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