Communications Earth & Environment最新文献_第7页

Lake- and groundwater-associated alteration of the olivine-rich Margin unit in Jezero crater, Mars. 火星耶泽洛陨石坑富橄榄石边缘单元的湖泊和地下水相关蚀变。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-09-21 DOI: 10.1038/s43247-026-03997-9

Candice C Bedford, Eleni Ravanis, Roger C Wiens, Elise Clavé, Julene Aramendia, Juan Manuel Madariaga, Eleanor Moreland, Stephanie Connell, Alexander Jones, Briony Horgan, Olivier Forni, Bradley Garczynski, Susanne Schröder, Kenneth Williford, Linda Kah, Kathryn Stack, Lucia Mandon, Agnés Cousin, Pierre Beck, Erwin Dehouck, Clément Royer, Adrian Brown

{"title":"Lake- and groundwater-associated alteration of the olivine-rich Margin unit in Jezero crater, Mars.","authors":"Candice C Bedford, Eleni Ravanis, Roger C Wiens, Elise Clavé, Julene Aramendia, Juan Manuel Madariaga, Eleanor Moreland, Stephanie Connell, Alexander Jones, Briony Horgan, Olivier Forni, Bradley Garczynski, Susanne Schröder, Kenneth Williford, Linda Kah, Kathryn Stack, Lucia Mandon, Agnés Cousin, Pierre Beck, Erwin Dehouck, Clément Royer, Adrian Brown","doi":"10.1038/s43247-026-03997-9","DOIUrl":"10.1038/s43247-026-03997-9","url":null,"abstract":"The Margin unit in Jezero crater, Mars, was explored by NASA's Perseverance rover as orbital data suggested it may represent an ancient lake shoreline. Using SuperCam data, we evaluate the origin and alteration history of this enigmatic unit. Here, we show that the Margin unit explored at high elevations (>-2350 m) has a texture and chemistry indicative of a slow-cooled, crystalline, olivine-rich rock without significant water exposure. In contrast, exposures situated below the hypothesized Jezero paleolake's second terrace level reveal a complex history of water-rock interaction, with signs of physical reworking near Neretva Vallis and the Western fan. We identify three main alteration episodes: first, neutral-to-alkaline CO2-rich fluids circulated within the bedrock, forming carbonate-rich ridges upon erosion. Then, exposure to the Jezero paleolake waters or changes in groundwater fluids remobilized carbonate and precipitated silica in the secondary pore spaces. Finally, late-stage hydrothermal fluids flowed through younger fractures, precipitating fluorite-bearing, Ca-sulfate mineral veins. This sequence of multiple fluid events driven by groundwater activity and exposure to the lake reinforces the Margin unit as a locality of astrobiological interest.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"728"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13593571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149024078","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 methane emissions from boreal peatlands following linear disturbances. 线性扰动后北方泥炭地甲烷排放量增加。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-09 DOI: 10.1038/s43247-026-03273-w

Percy Korsah, Scott J Davidson, Maria Strack

{"title":"Increased methane emissions from boreal peatlands following linear disturbances.","authors":"Percy Korsah, Scott J Davidson, Maria Strack","doi":"10.1038/s43247-026-03273-w","DOIUrl":"10.1038/s43247-026-03273-w","url":null,"abstract":"Boreal peatlands serve as long-term carbon (C) sinks and a significant source of methane (CH4) to the atmosphere. However, peatlands are threatened by both natural and anthropogenic disturbances, resulting in potential release of large amounts of C to the atmosphere. Linear disturbances, such as seismic lines for geologic exploration, constitute the largest area of disturbance in boreal Canada. The impact of seismic lines on peatland C cycling is not well understood, although physical changes in topography and lack of tree re-establishment are well-documented. This study used the closed chamber technique to measure growing season understory CH4 fluxes on the footprint of the seismic line disturbance and in adjacent intact peatlands and assessed environmental controls on CH4 dynamics across a treed fen and two treed bogs near Peace River, Alberta, Canada. Seismic lines were significantly warmer and wetter providing ideal conditions for increased CH4 emissions at all sites. Methane emissions relative to natural areas were almost tripled in the bog sites (261-308 %) and close to double in the fen (176 %). These results will contribute to accurate greenhouse gas reporting for anthropogenic disturbances in boreal peatlands and provide a scientific foundation for practices and policies related to peatland restoration.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"360"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13102687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147764820","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

An outbreak of highly pathogenic avian influenza H5N1 could impact the dairy cattle sector and the broader economy in the United States. 高致病性H5N1禽流感的爆发可能影响美国的奶牛部门和更广泛的经济。

IF 8.9 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-01-27 DOI: 10.1038/s43247-025-03153-9

Guillaume Morel, Anh Pham, Christian Morgenstern, Joseph T Hicks, Thomas Rawson, Victoria Y Fan, W John Edmunds, Giovanni Forchini, Katharina Hauck

{"title":"An outbreak of highly pathogenic avian influenza H5N1 could impact the dairy cattle sector and the broader economy in the United States.","authors":"Guillaume Morel, Anh Pham, Christian Morgenstern, Joseph T Hicks, Thomas Rawson, Victoria Y Fan, W John Edmunds, Giovanni Forchini, Katharina Hauck","doi":"10.1038/s43247-025-03153-9","DOIUrl":"10.1038/s43247-025-03153-9","url":null,"abstract":"The outbreak of Highly Pathogenic Avian Influenza H5N1 in U.S. dairy cattle poses substantial risks to public health, economic sustainability of farming, and global food systems. Using a Computable General Equilibrium model, we simulate its short- to medium-term impacts on Gross Domestic Product and other macro-economic outcomes for the US and its main trading partners. We simulate impacts under the current situation and realistic and reasonable worst-case scenarios. We estimate domestic economic losses ranging between 0.06% and 0.9% of US GDP, with losses to the dairy sector ranging between 3.4% and 20.6%. Trading partners increase dairy production to compensate for the loss. Current government subsidies are about 1.2% (95% HDI: 1% to 1.4%) of output losses, and likely insufficient to incentivise farmers to step up surveillance and biosecurity for mitigating the possible emergence of H5N1 strains with pandemic potential into human populations.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"135"},"PeriodicalIF":8.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12880910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146141322","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

Single-cell ionomes of terrestrial cryosphere algae. 陆地冰冻圈藻类的单细胞离子体。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-06-26 DOI: 10.1038/s43247-026-03679-6

Silvana R Oliveira, Helen K Feord, Cícero A Lopes Júnior, Ravi Sven Peters, Liane G Benning, Björn Meermann

{"title":"Single-cell ionomes of terrestrial cryosphere algae.","authors":"Silvana R Oliveira, Helen K Feord, Cícero A Lopes Júnior, Ravi Sven Peters, Liane G Benning, Björn Meermann","doi":"10.1038/s43247-026-03679-6","DOIUrl":"10.1038/s43247-026-03679-6","url":null,"abstract":"Algae from the Viridiplantae lineage grow on glaciers and semi-permanent snow patches globally. These algal taxa have adapted to extreme environmental conditions, such as freezing temperatures, high light, and oligotrophic nutrient availability. However, how cryosphere algae balance their cellular nutrients to deal with these conditions is not fully known. To address this knowledge gap, we used single-cell inductively coupled plasma-mass spectrometry to quantify the single-cell ionomes (Phosphorus, Magnesium, Calcium, Copper, Iron, Manganese, and Zinc) of cryosphere chlorophyte algae, Microglena sp., Raphidonema sempervirens, and Deuterostichococcus sp., and compared them to mesophile chlorophyte algae, Acutodesmus obliquus and Chlamydomonas reinhardtii. We validated our results through mass spectrometric analyses of digested cultures. When corrected to average cell biovolume, cryosphere algae had lower Phosphorus, Magnesium, and Calcium, consistent with slow cellular metabolism adapted to cold life. Under Phosphorus-starvation, Raphidonema showed no impact of extracellular Phosphorus loss on its single-cell ionome, however, Microglena had a correlative loss of Phosphorus and Magnesium, and an increase in Copper, indicating Phosphorus mobilisation via polyphosphate hydrolysis. Our results provide a comprehensive insight into the single-cell ionomes of cryosphere and mesophile chlorophyte algae and reveal insights into nutrient homeostasis in algal cells adapted to the cryosphere.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"546"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13309284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148344122","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

Peatland degradation restructures microbial communities and reduces soil multifunctionality through amplified β-diversity turnover. 泥炭地退化重组微生物群落，并通过放大β-多样性转换降低土壤的多功能性。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-05-19 DOI: 10.1038/s43247-026-03510-2

Jianwei Li, Haoran Fu, Peduruhewa H Jeewani, Yanan Liu, Hongfeng Bian, Lianxi Sheng, Davey L Jones, Qingxu Ma

{"title":"Peatland degradation restructures microbial communities and reduces soil multifunctionality through amplified β-diversity turnover.","authors":"Jianwei Li, Haoran Fu, Peduruhewa H Jeewani, Yanan Liu, Hongfeng Bian, Lianxi Sheng, Davey L Jones, Qingxu Ma","doi":"10.1038/s43247-026-03510-2","DOIUrl":"https://doi.org/10.1038/s43247-026-03510-2","url":null,"abstract":"Soil multifunctionality (SMF) integrates multiple ecosystem processes essential for ecosystem stability, organic matter decomposition, nutrient transformation, and energy flow. Peatlands occupy a small fraction of the terrestrial surface, yet their high water tables and anaerobic conditions sustain diverse biogeochemical processes and relatively high SMF. However, drainage, climate change, and intensified human activities disrupt these conditions and drive widespread peatland degradation. Here, we integrated two field experiments from Northeast China with a global meta-analysis of 54 studies to assess how peatland degradation affects soil microbial communities and SMF. Degradation increased soil pH, reduced lignin- and lipid-rich structural carbon, enhanced hydrolytic enzyme activity, elevated CO2 emissions, and ultimately lowered SMF. Land-use conversion exerted substantially stronger negative effects on SMF than natural peatland degradation. In both bacterial and fungal communities, changes in microbial β diversity consistently exceeded those in α diversity across degraded peatlands. Random forest and structural equation modelling identified β diversity as the strongest predictor of SMF. Meta-analysis results further confirmed that peatland degradation consistently reshapes microbial community composition, while effects on α diversity remain limited. Overall, shifts in microbial β diversity emerge as a key mechanism constraining peatland SMF, providing insights into how degradation alters soil processes and ecosystem functioning.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"657"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13468148/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148757524","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

Changing sea ice cover led to marine biodiversity shifts in the Late Quaternary. 海冰覆盖的变化导致了晚第四纪海洋生物多样性的变化。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-06-04 DOI: 10.1038/s43247-026-03696-5

Stijn De Schepper, Tristan Cordier, Katrine Sandnes Skaar, Jessica Louise Ray, Henrik Sadatzki, Bjørg Risebrobakken

引用次数: 0

Irreversible climate changes driven by degree-years of temperature overshoot. 不可逆转的气候变化是由温度超调造成的。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-06-16 DOI: 10.1038/s43247-026-03761-z

Mitchell Dickau, Kirsten Zickfeld, H Damon Matthews

引用次数: 0

Legacy of peatland erosion shapes microbial communities during recovery. 泥炭地侵蚀的遗产在恢复过程中塑造了微生物群落。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-06-30 DOI: 10.1038/s43247-026-03766-8

Fin Ring-Hrubesh, Mike Vreeken, Anne Eberle, Bradley Welch, Paul Sinnadurai, Penny Johnes, Robert Griffiths, Angela Gallego-Sala, Richard Pancost, Casey Bryce

{"title":"Legacy of peatland erosion shapes microbial communities during recovery.","authors":"Fin Ring-Hrubesh, Mike Vreeken, Anne Eberle, Bradley Welch, Paul Sinnadurai, Penny Johnes, Robert Griffiths, Angela Gallego-Sala, Richard Pancost, Casey Bryce","doi":"10.1038/s43247-026-03766-8","DOIUrl":"10.1038/s43247-026-03766-8","url":null,"abstract":"Human degradation has caused many peatlands worldwide to shift from long-term carbon sinks to net sources. In upland blanket peatlands, erosion disrupts plant-derived carbon input and exposes deep peat, accelerating oxidation of old carbon. The efficacy of restoration in preventing carbon loss and recovering ecosystem function depends on microbial responses to both water table manipulation and renewed litter input. Yet it is unclear how these factors alter the microbial communities that ultimately control carbon storage and emissions. Here we show that microbial community composition in the eroded Waun Fignen Felen peatland, South Wales, was governed primarily by organic matter bioavailability rather than water-table position. Long-term erosion leaves a legacy of highly decomposed organic matter, unaltered by re-wetting. Where plant litter accumulation is renewed on formerly eroded peat surfaces, the influx of bioavailable organic input supports a distinct prokaryote community with a greater bacterial population size, and evidence of elevated respiration.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"838"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13683034/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149237223","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

High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma. 意大利的高焓拉德罗地热系统，由数千立方公里的地壳中部岩浆提供动力。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-04-14 DOI: 10.1038/s43247-026-03334-0

Matteo Lupi, Douglas Stumpp, Iván Cabrera-Pérez, Konstantinos Michailos, Gilberto Saccorotti, Marco Bonini, Federico Farina, Elliot Amir Jiwani-Brown, Riccardo Lanari, Samuele Papeschi, Geneviève Savard, Juan Porras, Julien Sfalcin, Francisco Muñoz-Burbano, Riccardo Minetto, Chiara Del Ventisette, Davide Piccinini, Domenico Montanari

{"title":"High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma.","authors":"Matteo Lupi, Douglas Stumpp, Iván Cabrera-Pérez, Konstantinos Michailos, Gilberto Saccorotti, Marco Bonini, Federico Farina, Elliot Amir Jiwani-Brown, Riccardo Lanari, Samuele Papeschi, Geneviève Savard, Juan Porras, Julien Sfalcin, Francisco Muñoz-Burbano, Riccardo Minetto, Chiara Del Ventisette, Davide Piccinini, Domenico Montanari","doi":"10.1038/s43247-026-03334-0","DOIUrl":"10.1038/s43247-026-03334-0","url":null,"abstract":"Thousands of cubic kilometers of magma lie in the upper crust below supervolcanoes such as Yellowstone (USA), Toba (Indonesia), and Taupo (New Zealand). Most of these systems are identified because of surface geomorphology and eruptive deposits. Recognizing such volcanoes without surface evidence is challenging, causing large magmatic reservoirs to go unnoticed. The Tuscan Magmatic Province, Italy, features only sparse Quaternary volcanic activity, but subsurface data indicate the presence of supercritical fluids at shallow depths. Here we show that more than 5'000 km3 of magma and partial melt are stored in the middle crust of the Tuscan Magmatic Province, Italy. This fuels the high-enthalpy geothermal systems of the region. Such volumes are comparable to those of mid-crust reservoirs beneath recognized supervolcanoes. The discovery of large volumes of magma is critical to explain the long-term evolution of mature magmatic systems and to understand the behavior of large magmatic provinces.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"269"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13079101/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147697759","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

Reforestation scenarios shape global and regional temperature outcomes. 重新造林情景会影响全球和区域的温度结果。

IF 9.3 1区地球科学

Communications Earth & Environment Pub Date : 2026-01-01 Epub Date: 2026-03-11 DOI: 10.1038/s43247-026-03331-3

Nora L S Fahrenbach, Steven J De Hertog, Felix Jäger, Peter J Lawrence, Robert C Jnglin Wills

{"title":"Reforestation scenarios shape global and regional temperature outcomes.","authors":"Nora L S Fahrenbach, Steven J De Hertog, Felix Jäger, Peter J Lawrence, Robert C Jnglin Wills","doi":"10.1038/s43247-026-03331-3","DOIUrl":"10.1038/s43247-026-03331-3","url":null,"abstract":"Large-scale reforestation is a prominent proposed climate mitigation strategy, but its full temperature impact remains poorly understood. Here, we present a systematic comparison of temperature responses to three distinct reforestation potentials using a fully-coupled Earth System Model. We find that reforestation consistently provides net global cooling, ranging from -0.13∘C to -0.25∘C, due to carbon uptake partially offset by biogeophysical warming. Crucially, a comparable net global cooling can be achieved with substantially smaller (450 Mha less area) but strategically located reforestation. Reforestation locally cools the tropics but causes albedo-driven warming in higher latitudes, which is often amplified by non-local effects. The different reforestation patterns alone can induce a wide range of non-local effects, showing that planting locations shape the biogeophysical response through atmospheric and oceanic feedbacks. Our findings underscore the importance of climate-smart policies that focus on the geographical placement of reforestation, considering both biogeochemical and biogeophysical effects to maximize cooling benefits.","PeriodicalId":10530,"journal":{"name":"Communications Earth & Environment","volume":"7 1","pages":"204"},"PeriodicalIF":9.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12979200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147462778","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