Communications Earth & Environment最新文献_第2页

Urban areas in the United States experience substantial wildfire impacts. 美国的城市地区经历了巨大的野火影响。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-02 DOI: 10.1038/s43247-026-03336-y

Kathryn McConnell, J Tom Mueller, Paul Berne Burow, Lise Ann St Denis

引用次数: 0

Arctic sea-ice ridges are biomass hotspots harboring diverse microbial communities. 北极海冰脊是生物质能热点，蕴藏着多种微生物群落。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-13 DOI: 10.1038/s43247-026-03364-8

Oliver Müller, Jessie Gardner, Lasse Mork Olsen, Evgenii Salganik, Philipp Assmy, Rolf Gradinger, Gunnar Bratbak, Clara J M Hoppe, Benjamin A Lange, Morven Muilwijk, Dmitry V Divine, Nicole Aberle, Jeffrey W Krause, Marit Reigstad, Eva Leu, Tatiana M Tsagaraki, Aud Larsen, Knut V Høyland, John Paul Balmonte, William Boulton, Håkon Dahle, Lena Eggers, Allison A Fong, Gaël Guillou, Benoit Lebreton, Katja Metfies, Thomas Mock, Elzbieta Petelenz, Agnieszka Tatarek, Sinhué Torres-Valdés, Anders Torstensson, Jozef Wiktor, Mats A Granskog

{"title":"Arctic sea-ice ridges are biomass hotspots harboring diverse microbial communities.","authors":"Oliver Müller, Jessie Gardner, Lasse Mork Olsen, Evgenii Salganik, Philipp Assmy, Rolf Gradinger, Gunnar Bratbak, Clara J M Hoppe, Benjamin A Lange, Morven Muilwijk, Dmitry V Divine, Nicole Aberle, Jeffrey W Krause, Marit Reigstad, Eva Leu, Tatiana M Tsagaraki, Aud Larsen, Knut V Høyland, John Paul Balmonte, William Boulton, Håkon Dahle, Lena Eggers, Allison A Fong, Gaël Guillou, Benoit Lebreton, Katja Metfies, Thomas Mock, Elzbieta Petelenz, Agnieszka Tatarek, Sinhué Torres-Valdés, Anders Torstensson, Jozef Wiktor, Mats A Granskog","doi":"10.1038/s43247-026-03364-8","DOIUrl":"https://doi.org/10.1038/s43247-026-03364-8","url":null,"abstract":"Although sea-ice ridges are prominent features of the Arctic Ocean, very little is known about their role as habitats and in biogeochemical cycles. Here, we show that ridges provide complex sea-ice habitats which host unique and diverse biological communities. Seasonally, ridges appear to transition from a biological repository in winter to biological hotspots in summer, surpassing algal biomass in level ice and surface waters by up to eight-fold. In summer, ridges can contain up to 80% of the total area integrated sea-ice algal biomass, emphasizing their importance in the Arctic sea-ice ecosystem. However, environmental shifts, such as meltwater infiltration and freezing inside the ridge in late summer, alter microbial communities from being predominantly autotrophic to heterotrophic. Our work provides evidence of contrasting roles of sea-ice ridges for Arctic carbon cycling in summer and shows that the habitats in the ridge interior harbor unique microbial communities, adding complexity to Arctic biodiversity.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"385"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13128458/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147811738","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

Diatom lipids open window to past ocean temperatures in the polar regions. 硅藻脂打开了了解极地地区过去海洋温度的窗口。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-01-09 DOI: 10.1038/s43247-025-03177-1

Simon T Belt, Lukas Smik, Denizcan Köseoğlu, Claire S Allen, Katrine Husum, Jochen Knies

引用次数: 0

Oxidative uptake of Ce by oceanic ferromanganese crusts and implications for paleoredox estimates using Ce isotopes. 海洋锰铁结壳对Ce的氧化吸收及其对Ce同位素古氧化还原估计的意义。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-01-20 DOI: 10.1038/s43247-026-03196-6

Alain Manceau, Jianlin Liao, Yan Li, Andrea Giacomelli, Marius Retegan, Andrea Koschinsky, Stephan N Steinmann, Olivier Mathon

{"title":"Oxidative uptake of Ce by oceanic ferromanganese crusts and implications for paleoredox estimates using Ce isotopes.","authors":"Alain Manceau, Jianlin Liao, Yan Li, Andrea Giacomelli, Marius Retegan, Andrea Koschinsky, Stephan N Steinmann, Olivier Mathon","doi":"10.1038/s43247-026-03196-6","DOIUrl":"https://doi.org/10.1038/s43247-026-03196-6","url":null,"abstract":"The oxidative enrichment and isotopic fractionation of cerium (Ce) in contact with vernadite (δ-MnO2) serve as a proxy for past redox conditions in both terrestrial and marine environments. However, the molecular processes that govern the scavenging of Ce from the dissolved 3+ to the insoluble 4+ oxidation states remain obscure. Adsorption experiments on synthetic δ-MnO2 suggest that aqueous Ce(III) precipitates as ceric hydroxide (Ce(OH)4), an unknown mineral. Here, the atomic-scale structure of Ce in natural vernadite from ferromanganese crusts collected across the Pacific, Atlantic, and Indian Oceans was examined using advanced high-energy-resolution extended X-ray absorption fine structure spectroscopy. The findings provide direct evidence for the uptake of Ce as mononuclear Ce(IV) complexes at the layer-edge sites (DES complex) and Mn(IV) vacancy sites of vernadite. Density functional theory-based Gibbs free-energy calculations indicate that hydrolysis of the DES complex promotes the oxidation of Ce(III) to Ce(IV). Quantum mechanical calculations predict that the equilibrium 136Ce/140Ce isotope fractionation factor between Ce(III) dissolved in seawater and the Ce(IV) complexes can reach 1.2-1.3 ‰ at 25 °C, indicating that the 136Ce/140Ce ratio has high potential as a new paleoredox proxy.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"172"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12909127/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146218781","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

Ichnofossils in volcanic glass from palaeoproterozoic hydrothermal vents were burrowed by microorganisms probably seeking phosphate. 古元古代热液喷口火山玻璃中的鱼化石被微生物挖洞，可能是为了寻找磷酸盐。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-09 DOI: 10.1038/s43247-026-03359-5

Dominic Papineau

{"title":"Ichnofossils in volcanic glass from palaeoproterozoic hydrothermal vents were burrowed by microorganisms probably seeking phosphate.","authors":"Dominic Papineau","doi":"10.1038/s43247-026-03359-5","DOIUrl":"https://doi.org/10.1038/s43247-026-03359-5","url":null,"abstract":"Ichnofossils in basaltic glass are putative microscopic trace fossils occurring on modern seafloor and throughout Earth history. While their biological origin remains debated, it is unknown why microorganisms thrive in volcanic glass. Here we show ichnofossils associated with biosignatures from sedimentary interbeds of pillow basalt in the ~ 1870 million years old Flaherty Formation, Belcher Group, Canada. These rocks are associated with metre-size, pinnacle-shaped structures of silicified basalt, pahoehoe basalt with paleo-caliche, and isolated pods of gossan indicating shallow marine hydrothermal venting. Trails of spheroidal ichnofossils composed of titanite and organic matter surround abundant nanoscopic-size apatite and lepidocrocite, suggesting they caused rock dissolution to obtain phosphate. Stable isotopes provide complementary biosignatures for possible chemolithotrophy. While there is evidence for abiotic carbon-based reactions, the biological origin of spheroidal ichnofossils is supported by 13C-depleted organic matter and calcite, suggesting they were burrowed by microorganisms likely seeking phosphate in volcanic glass near hydrothermal vents.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"361"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13102711/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147764811","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

River temperature response to atmospheric heatwaves is modulated by discharge and meltwater. 河流温度对大气热浪的响应受流量和融水的调节。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-02-19 DOI: 10.1038/s43247-026-03269-6

Amber van Hamel, Joren Janzing, Manuela Irene Brunner

{"title":"River temperature response to atmospheric heatwaves is modulated by discharge and meltwater.","authors":"Amber van Hamel, Joren Janzing, Manuela Irene Brunner","doi":"10.1038/s43247-026-03269-6","DOIUrl":"https://doi.org/10.1038/s43247-026-03269-6","url":null,"abstract":"Alpine rivers are becoming increasingly exposed to atmospheric heatwaves. Because of their strong relationship with air temperature, rivers can experience persistent heat anomalies, known as riverine heatwaves, which can have serious consequences for river ecosystems and the economy. This study aims to improve our understanding of how river water temperature responds to atmospheric heatwaves by focusing on the interplay of various hydro-climatic variables that can strengthen or weaken the thermal sensitivity of rivers to such events. Our results show that the response of water temperature to atmospheric heatwaves can vary substantially, with only 47% of atmospheric heatwaves leading to riverine heatwaves. Riverine heatwave development can be prevented by positive anomalies in discharge and meltwater, while negative anomalies in discharge strengthen the link between atmospheric and river temperatures. Future changes in these hydro-climatic conditions will likely increase the sensitivity of Alpine rivers to atmospheric heatwaves.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"296"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13038413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147608141","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

Ice-marginal proglacial lakes enhance outlet glacier velocities across Greenland. 冰缘原冰湖增强了整个格陵兰岛的冰川出口速度。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-04-01 DOI: 10.1038/s43247-026-03363-9

Connie M Harpur, Mark W Smith, Jonathan L Carrivick, Duncan J Quincey, Liam Taylor

{"title":"Ice-marginal proglacial lakes enhance outlet glacier velocities across Greenland.","authors":"Connie M Harpur, Mark W Smith, Jonathan L Carrivick, Duncan J Quincey, Liam Taylor","doi":"10.1038/s43247-026-03363-9","DOIUrl":"https://doi.org/10.1038/s43247-026-03363-9","url":null,"abstract":"Ice-marginal lakes can alter glacier dynamics, typically accelerating mass loss. The number and size of lakes bordering the Greenland Ice Sheet have increased over recent decades, but their influence on the velocity of outlet glaciers remains largely unquantified. Here, we compare the longitudinal velocity profiles of 102 lake- and land-terminating glaciers across the Greenland Ice Sheet. We find that lake-terminating glaciers are 231% faster at the terminus and exhibit enhanced ice speeds up to ~3.5 km inland. Furthermore, ~44% of lake-terminating glaciers accelerate towards their termini, compared to only ~4% of land-terminating glaciers. The relationship between lake size and glacier behaviour is complex, but glaciers terminating in the largest lakes generally exhibit greater rates of down-ice acceleration than those terminating in the smallest lakes. Together, these results demonstrate that outlet glaciers respond dynamically to lakes at their termini, which should be accounted for in models of ice sheet evolution.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"287"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13043277/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147621475","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

Environmental variability shapes biodiversity and protected area priorities in Canada. 环境变化决定了加拿大的生物多样性和保护区的优先事项。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-01-09 DOI: 10.1038/s43247-025-03166-4

Rekha Marcus, Stefano Mezzini, Dwija Desai, Michael J Noonan

{"title":"Environmental variability shapes biodiversity and protected area priorities in Canada.","authors":"Rekha Marcus, Stefano Mezzini, Dwija Desai, Michael J Noonan","doi":"10.1038/s43247-025-03166-4","DOIUrl":"https://doi.org/10.1038/s43247-025-03166-4","url":null,"abstract":"Priority areas are typically identified based on mean conditions, while ignoring variance around the mean (i.e., \"stochasticity'). This is problematic as high environmental stochasticity can increase extinction risk and reduce the effectiveness of protected areas. Here we use daily Normalized Difference Vegetation Index data from 1981 to 2025 to generate spatially-explicit estimates of both the mean and variance in environmental productivity across Canada. From these models, we found that environmental stochasticity shows strong spatial structure and has been steadily increasing over the past four decades. Additionally, stochasticity had a negative effect on species richness. We found no clear relationship between stochasticity and protection status, suggesting that Canada's network of protected areas are not well-buffered against a climate-change induced increase in stochasticity. Promisingly, we identified 2,709,580 km2 of currently unprotected land that may minimise the impact(s) of growing stochasticity. This work provides a framework for incorporating environmental stochasticity into conservation planning.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"146"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12915523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146224744","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

Increased contributions of climate-driven wildfires to nitrogen deposition in the United States. 在美国，气候驱动的野火对氮沉积的贡献增加。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-02-11 DOI: 10.1038/s43247-026-03279-4

Patrick C Campbell, Daniel Q Tong, Shinkuang Chang, Siqi Ma, Yunyao Li, Jiaxin Ding, Rick Saylor, Barry Baker, Youhua Tang, John Walker

{"title":"Increased contributions of climate-driven wildfires to nitrogen deposition in the United States.","authors":"Patrick C Campbell, Daniel Q Tong, Shinkuang Chang, Siqi Ma, Yunyao Li, Jiaxin Ding, Rick Saylor, Barry Baker, Youhua Tang, John Walker","doi":"10.1038/s43247-026-03279-4","DOIUrl":"https://doi.org/10.1038/s43247-026-03279-4","url":null,"abstract":"Climate change and increases in the frequency and severity of climate-driven wildfires, particularly in the western United States, has serious ramifications for enhanced downwind reactive nitrogen (Nr) emissions, deposition, and critical load exceedances. Here we present a multi-decadal (2002 - 2021), harmonized model-data-driven study using the George Mason University North American Chemical Reanalysis (NACR) system and simulations including both \"with-fire\" and \"without-fire\" conditions to quantify the change in trends of fire activity and source contributions to total Nr emissions and deposition over the U.S. Our results show that fire activity has increased substantially in the western U.S., especially in the west-northwest U.S. for wildfires, and that this increase is associated with positive annual near-surface temperature and vapor pressure deficit anomalies compared to the period average. Major results and implications of this work are increasing trends in the contribution of climate-driven wildfires to higher Nr emissions, deposition, and critical load exceedances of up to 20-40% due to fires in the western U.S. There are also smaller increases (<5 %) in Nr deposition trends for the eastern U.S., which are related to greater occurrence and reporting of agricultural and prescribed burns.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"254"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13002464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147497639","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

Wetlands set the pace of annual runoff in the northern Great Plains. 湿地决定了大平原北部每年径流的速度。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-11 DOI: 10.1038/s43247-026-03318-0

Javad Rahmani, Irena F Creed, Pascal Badiou, Ali A Ameli

{"title":"Wetlands set the pace of annual runoff in the northern Great Plains.","authors":"Javad Rahmani, Irena F Creed, Pascal Badiou, Ali A Ameli","doi":"10.1038/s43247-026-03318-0","DOIUrl":"https://doi.org/10.1038/s43247-026-03318-0","url":null,"abstract":"Interannual variability in the runoff ratio-how much annual precipitation becomes streamflow-underpins water management, flood forecasting, and biogeochemical fluxes. In most hydrologic frameworks, this variability is attributed primarily to year-to-year climate drivers. Here, we show that in North America's wetland-rich Prairie Pothole Region, wetlands play the dominant proximate role. Using 38 years of satellite-based inundation maps and hydroclimate data from 109 catchments, we find that annual wetland inundation extent explains interannual runoff and high-flow variability more strongly than any annual or intra-annual climate index in 69% of catchments. Climate, especially snow persistence, affects wetland inundation extent, but wetland inundation exerts a stronger net control on runoff and ultimately sets the pace of annual runoff through fill-spill hydrology. Catchments exhibit wetland inundation-runoff relationships ranging from linear to strongly threshold-like, with threshold-like behavior predominant-particularly where Geographically Isolated Wetlands are abundant. These findings reveal wetlands as active regulators of ecosystem water balance and provide a landscape-explicit basis for forecasting, conservation, and adaptive water management across the region.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"368"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13111149/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147764824","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