Communications Earth & Environment最新文献_第5页

Silicon isotopic signatures of granitoids support increased weathering of subaerial land 3.7 billion years ago. 花岗岩类的硅同位素特征支持37亿年前陆地风化加剧。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-05-16 DOI: 10.1038/s43247-025-02337-7

Nicolas D Greber, Madeleine E Murphy, Julian-Christopher Storck, Jesse R Reimink, Nicolas Dauphas, Paul S Savage

{"title":"Silicon isotopic signatures of granitoids support increased weathering of subaerial land 3.7 billion years ago.","authors":"Nicolas D Greber, Madeleine E Murphy, Julian-Christopher Storck, Jesse R Reimink, Nicolas Dauphas, Paul S Savage","doi":"10.1038/s43247-025-02337-7","DOIUrl":"10.1038/s43247-025-02337-7","url":null,"abstract":"The weathering and erosion of emerged land profoundly influences the Earth system, including the composition of the atmosphere and the type of nutrients delivered to the oceans. The emergence of land allowed for the formation of lakes and continental shelves, important habitats for the origin and evolution of life. Recent studies indicate a difference in silicon isotopes between Archean granitoids and their modern counterparts, which is explained by the incorporation of seawater-derived silica in the melting sources of the former. We show that this signature changed rapidly around 3.6 billion years ago, and that this shift is likely linked to an increase in the dissolved silicon flux from terrestrial weathering. Modeling suggests that the amount of oceanic silicon derived from terrigenous sources increased from near zero to around 32 ± 15% between 3.8 and 3.6 billion years ago. This indicates that, from this point onward, continental weathering feedbacks were established, and mass flux from land became an important source in the chemical budget of seawater, changes that likely exerted positive effects on the evolution of life.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"382"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12084155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093030","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

Perchlorate brine formation from frost at the Viking 2 landing site. 维京2号着陆点结冰形成的高氯酸盐盐水。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-10 DOI: 10.1038/s43247-025-02411-0

Vincent F Chevrier

{"title":"Perchlorate brine formation from frost at the Viking 2 landing site.","authors":"Vincent F Chevrier","doi":"10.1038/s43247-025-02411-0","DOIUrl":"10.1038/s43247-025-02411-0","url":null,"abstract":"The presence and stability of brines on Mars's surface remain a significant mystery in planetary exploration. Previous mechanisms proposed for brine formation include melting of ice-salt mixtures and salt deliquescence. However, melting lacks a recharge mechanism, and deliquescence is impeded by Mars's extreme surface aridity. This study explores an underexplored process: the role of seasonal frost in brine formation. Utilizing meteorological data from the Viking 2 lander-the only mission, with Phoenix, to observe in situ water frost formation-I demonstrate that brines can form over approximately 30 sols at the end of winter as frost sublimates. The stable brines exhibit a water activity upper limit of 0.52, corresponding to the eutectic point of calcium perchlorate, a salt detected in various Martian regions, likely including the Viking 2 landing site. Consequently, I conclude that calcium perchlorate can generate small amounts of liquid brine in contact with frost for brief periods. The seasonal nature of frost suggests these brines recur and may leave long-term imprints. Therefore, frost-covered regions are prime candidates for future habitability and astrobiological exploration.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"447"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12151863/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144282741","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

Prioritisation of ocean biodiversity data collection to deliver a sustainable ocean. 优先收集海洋生物多样性数据，实现海洋可持续发展。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-18 DOI: 10.1038/s43247-025-02442-7

Amelia E H Bridges, Kerry L Howell

{"title":"Prioritisation of ocean biodiversity data collection to deliver a sustainable ocean.","authors":"Amelia E H Bridges, Kerry L Howell","doi":"10.1038/s43247-025-02442-7","DOIUrl":"10.1038/s43247-025-02442-7","url":null,"abstract":"Fundamental ecological questions about the distribution of ocean life remain unanswered, hindering both the effective management of the ocean, and our comprehension of life on this planet. The benthic and pelagic realms are subject to different methods of study, and to understand where to best focus effort, a thorough understanding of existing information is required, allowing identification of critical knowledge gaps. Open-access data repositories provide a valuable means to identify such gaps; however, these repositories are subject to challenges in separating benthic from pelagic data. Here we demonstrate an automated data pipeline for extracting and separating benthic from pelagic data in open-access repositories. By stratifying data against essential ocean variables in a critical gap analysis, we show that large spatial and taxonomic biases exist in both the benthic and pelagic global datasets, favouring depths shallower than ~100 m, the northern hemisphere, and vertebrate species. The newly compiled, cleaned, and classified dataset is used to identify areas of chronic under sampling and high-priority regions for exploration. We argue that coordinated strategic prioritisation of sampling is needed to support modelling and prediction, enabling us to better manage our oceans and comprehend life on Earth.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"473"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12176621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144368703","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

Impact of glacial meltwater on phytoplankton biomass along the Western Antarctic Peninsula. 南极半岛西部冰川融水对浮游植物生物量的影响。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-12 DOI: 10.1038/s43247-025-02435-6

B Jack Pan, Michelle M Gierach, Sharon Stammerjohn, Oscar Schofield, Michael P Meredith, Rick A Reynolds, Maria Vernet, F Alexander Haumann, Alexander J Orona, Charles E Miller

{"title":"Impact of glacial meltwater on phytoplankton biomass along the Western Antarctic Peninsula.","authors":"B Jack Pan, Michelle M Gierach, Sharon Stammerjohn, Oscar Schofield, Michael P Meredith, Rick A Reynolds, Maria Vernet, F Alexander Haumann, Alexander J Orona, Charles E Miller","doi":"10.1038/s43247-025-02435-6","DOIUrl":"10.1038/s43247-025-02435-6","url":null,"abstract":"The Western Antarctic Peninsula is undergoing rapid environmental change. Regional warming is causing increased glacial meltwater discharge, but the ecological impact of this meltwater over large spatiotemporal scales is not well understood. Here, we leverage 20 years of remote sensing data, reanalysis products, and field observations to assess the effects of sea surface glacial meltwater on phytoplankton biomass and highlight its importance as a key environmental driver for this region's productive ecosystem. We find a strong correlation between meltwater and phytoplankton chlorophyll-a across multiple time scales and datasets. We attribute this relationship to nutrient fertilization by glacial meltwater, with potential additional contribution from surface ocean stabilization associated with sea-ice presence. While high phytoplankton biomass typically follows prolonged winter sea-ice seasons and depends on the interplay between light and nutrient limitation, our results indicate that the positive effects of increased glacial meltwater on phytoplankton communities likely mitigate the negative impact of sea-ice loss in this region in recent years. Our findings underscore the critical need to consider glacial meltwater as a key ecological driver in polar coastal ecosystems.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"456"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12162344/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144301264","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

Meteorite-common amino acid induces clay exfoliation and abiotic compartment formation. 陨石-常见氨基酸诱导粘土剥落和非生物室形成。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-05 DOI: 10.1038/s43247-025-02417-8

Orr Rose Bezaly, Annemieke Petrignani, Helen E King

{"title":"Meteorite-common amino acid induces clay exfoliation and abiotic compartment formation.","authors":"Orr Rose Bezaly, Annemieke Petrignani, Helen E King","doi":"10.1038/s43247-025-02417-8","DOIUrl":"10.1038/s43247-025-02417-8","url":null,"abstract":"Clay surfaces have been invoked as crucial components in the origin of life processes due to their ability to concentrate organics and abiotically catalyse (bio)polymer production. Still, the importance of the mutual nature of organo-clay interactions and the effects of off-world organics in this interplay is a largely unexplored realm. We demonstrate a previously unrecognised phenomenon that occurs upon the transient interaction of montmorillonite clay with the meteorite-common, non-proteinogenic γ-aminobutyric acid. Attenuated total reflectance Fourier transform infrared spectroscopy and X-ray diffraction show that an irreversible structural change is induced by the off-world species. A distinct partial clay exfoliation is correlated with the formation of nanoscale cavities in the mid-layers of the original structure, observable using transmission electron microscopy. This work demonstrates that an exogenous amino acid can alter clay and introduce 3D confined nano-environments, which may facilitate compartmentalisation in prebiotic times. Our findings also highlight new sustainable nanocomposite synthesis routes applicable in environmental/materials sciences.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"435"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12141035/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144246817","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

Seasonal vertical migration of large polar copepods reinterpreted as a dispersal mechanism throughout the water column. 大型极地桡足类的季节性垂直迁移被重新解释为整个水柱的扩散机制。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-06-04 DOI: 10.1038/s43247-025-02389-9

Katrin Schmidt, Barbara Niehoff, Astrid Cornils, Wilhelm Hagen, Hauke Flores, Céline Heuzé, Nahid Welteke, Nadine Knϋppel, Sabrina Dorschner, Matthias Woll, Katie Jones, Giuliano Laudone, Robert G Campbell, Carin J Ashjian, Cecilia E Gelfman, Katyanne M Shoemaker, Rebecca Jenkins, Kristina Øie Kvile, Benoit Lebreton, Gaël Guillou, Clara J M Hoppe, Serdar Sakinan, Fokje L Schaafsma, Nicole Hildebrandt, Giulia Castellani, Simon T Belt, Allison A Fong, Angus Atkinson, Martin Graeve

{"title":"Seasonal vertical migration of large polar copepods reinterpreted as a dispersal mechanism throughout the water column.","authors":"Katrin Schmidt, Barbara Niehoff, Astrid Cornils, Wilhelm Hagen, Hauke Flores, Céline Heuzé, Nahid Welteke, Nadine Knϋppel, Sabrina Dorschner, Matthias Woll, Katie Jones, Giuliano Laudone, Robert G Campbell, Carin J Ashjian, Cecilia E Gelfman, Katyanne M Shoemaker, Rebecca Jenkins, Kristina Øie Kvile, Benoit Lebreton, Gaël Guillou, Clara J M Hoppe, Serdar Sakinan, Fokje L Schaafsma, Nicole Hildebrandt, Giulia Castellani, Simon T Belt, Allison A Fong, Angus Atkinson, Martin Graeve","doi":"10.1038/s43247-025-02389-9","DOIUrl":"10.1038/s43247-025-02389-9","url":null,"abstract":"Seasonal vertical migration of large lipid-rich copepods is often described as a mass descent of animals when primary production ceases, with important implications for mesopelagic food webs and global carbon sequestration. This view ignores the existence of surface-resident individuals, but here we show that non-migrants can form a substantial part of the populations of polar migrant species. In the Central Arctic Ocean, the biomass-dominant Calanus hyperboreus was evenly distributed throughout the water column from November 2019 to March 2020, with ~20% of subadults and adult females remaining in the upper 200 m and ~41% migrating to 1000-2000 m. These vertical positions aligned with differences in the copepods' cholesterol content, which can enhance the tissue density at higher temperatures. Gonad development and the vertical distribution of their offspring indicate that both non-migrant and migrant females contribute to the population recruitment. We reinterpret copepod seasonal migration as a bet-hedging strategy that balances nutritional benefits near the surface with survival benefits at depth, and thereby contributes to the species' resilience under climatic change.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"431"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12137130/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144246819","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

Planktonic foraminifera regulate calcification according to ocean density. 浮游有孔虫根据海洋密度调节钙化。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-07-31 DOI: 10.1038/s43247-025-02558-w

Stergios D Zarkogiannis, James W B Rae, Benjamin R Shipley, P Graham Mortyn

{"title":"Planktonic foraminifera regulate calcification according to ocean density.","authors":"Stergios D Zarkogiannis, James W B Rae, Benjamin R Shipley, P Graham Mortyn","doi":"10.1038/s43247-025-02558-w","DOIUrl":"10.1038/s43247-025-02558-w","url":null,"abstract":"Planktonic foraminifera are key contributors to the oceanic carbon cycle. In pelagic environments, carbonate production by planktonic biomineralizers regulates ocean-atmosphere carbon dioxide exchange and exports surface carbon to the deep ocean. Here we compare shell traits of three planktonic foraminifera species from the central Atlantic with a suite of environmental parameters to discern the factors underlying their variations. Our analysis revealed that calcification in foraminifera is associated with seawater density and depends on species habitat depth, whereas foraminifera bulk shell densities may serve as a seawater density proxy, regardless of species. We observe that their shell weights increased with habitat depth, enabling the living cells to adjust their overall density to match that of the surrounding liquid. This suggests that calcification in nonmotile organisms has a buoyancy regulatory function and will respond to the anthropogenically driven reductions in ocean density (oceanic rarefication), with potential consequences for the carbon cycle.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"605"},"PeriodicalIF":8.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12313521/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774833","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

Global decline in net primary production underestimated by climate models. 气候模型低估了全球净初级生产的下降。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-02-01 DOI: 10.1038/s43247-025-02051-4

Thomas J Ryan-Keogh, Alessandro Tagliabue, Sandy J Thomalla

引用次数: 0

Sustainable palm oil certification inadvertently affects production efficiency in Malaysia. 可持续棕榈油认证无意中影响了马来西亚的生产效率。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-03-12 DOI: 10.1038/s43247-025-02150-2

Nina Zachlod, Michael Hudecheck, Charlotta Sirén, Gerard George

引用次数: 0

Unified failure model for landslides, rockbursts, glaciers, and volcanoes. 滑坡、岩爆、冰川和火山的统一破坏模型。

IF 8.1 1区地球科学

Communications Earth & Environment Pub Date : 2025-01-01 Epub Date: 2025-05-20 DOI: 10.1038/s43247-025-02369-z

Qinghua Lei, Didier Sornette

{"title":"Unified failure model for landslides, rockbursts, glaciers, and volcanoes.","authors":"Qinghua Lei, Didier Sornette","doi":"10.1038/s43247-025-02369-z","DOIUrl":"10.1038/s43247-025-02369-z","url":null,"abstract":"Forecasting catastrophic failures that threaten life and property remains a formidable challenge. A major hurdle lies in the intermittent rupture dynamics of heterogeneous materials. This erratic pattern challenges conventional time-to-failure predictive models, which typically assume a smooth, monotonic power law acceleration. Here, we propose a unified failure model based on a log-periodic power law that encapsulates the intermittent acceleration-deceleration sequences within a single framework. We validate this unified model using a global dataset of 109 historical geohazard events including landslides, rockbursts, glacier breakoffs, and volcanic eruptions, spanning a century and across seven continents. We show that our model significantly outperforms the conventional approach, offering a robust and versatile framework for describing the complex rupture behavior of diverse geomaterials such as rock, soil, and ice at the site scale. This unified perspective not only broadens the model's applicability across diverse geohazards but also highlights its potential to enhance early warning systems.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"6 1","pages":"390"},"PeriodicalIF":8.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12092298/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144126719","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