Nature Geoscience最新文献_第10页

First breaths of a hospitable Earth 一个好客的地球的最初气息

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-13 DOI: 10.1038/s41561-025-01708-1

引用次数: 0

Microbial physiology conserves phosphorus across long-term ecosystem development 微生物生理在长期的生态系统发展中保存磷

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-12 DOI: 10.1038/s41561-025-01696-2

O. M. Butler, S. Manzoni, G. Liang, S. Matsumura, C. R. Warren

{"title":"Microbial physiology conserves phosphorus across long-term ecosystem development","authors":"O. M. Butler, S. Manzoni, G. Liang, S. Matsumura, C. R. Warren","doi":"10.1038/s41561-025-01696-2","DOIUrl":"10.1038/s41561-025-01696-2","url":null,"abstract":"Long-term terrestrial ecosystem development is characterized by declining soil phosphorus (P) and a corresponding increase in biological P limitation. The function of P-limited ecosystems relies on efficient use of P by soil microorganisms, but the physiological strategies used by microorganisms to manage P scarcity during ecosystem development are unknown. Here, by applying recent advances in soil metabolomic techniques to samples collected from a ~700,000-year chronosequence of ecosystem development in eastern Australia, we show that soil microbial physiological strategies for P efficiency include a high proportion of non-phosphorous membrane lipids along with substantial intracellular carbon storage. These strategies—which proliferate during primary succession and are maximized in retrogressive, P-depleted ecosystems—uphold microbial carbon limitation, triple modelled P-mineralization potential and can conserve close to double the P contained in the aboveground biomass of vegetation. These findings transform our understanding of terrestrial ecosystems by revealing a strong yet overlooked interplay between the ecophysiology of soil microorganisms and the long-term trajectory of ecosystem development. Microbial physiology conserves phosphorus by reducing phosphorus contributions in membrane lipids and increasing intracellular carbon storage during long-term ecosystem development, according to measurements of a ~700,000–year chronosequence across an Australian dune system.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 6","pages":"503-509"},"PeriodicalIF":16.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41561-025-01696-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933574","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

A West Antarctic grounding-zone environment shaped by episodic water flow 由偶发水流形成的西南极洲陆基带环境

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-12 DOI: 10.1038/s41561-025-01687-3

Huw J. Horgan, Craig Stewart, Craig Stevens, Gavin Dunbar, Linda Balfoort, Britney E. Schmidt, Peter Washam, Mauro A. Werder, Darcy Mandeno, James Marschalek, Christina Hulbe, Nicholas Holschuh, Richard Levy, Benjamin Hurwitz, Stefan Jendersie, Katelyn Johnson, Justin Lawrence, Regine Morgenstern, Andrew D. Mullen, Enrica Quartini, Wilson Sauthoff, Matthew Siegfried, Holly Still, Sam Thorpe-Loversuch, Tina van de Flierdt, Ryan Venturelli, Arran Whiteford

{"title":"A West Antarctic grounding-zone environment shaped by episodic water flow","authors":"Huw J. Horgan, Craig Stewart, Craig Stevens, Gavin Dunbar, Linda Balfoort, Britney E. Schmidt, Peter Washam, Mauro A. Werder, Darcy Mandeno, James Marschalek, Christina Hulbe, Nicholas Holschuh, Richard Levy, Benjamin Hurwitz, Stefan Jendersie, Katelyn Johnson, Justin Lawrence, Regine Morgenstern, Andrew D. Mullen, Enrica Quartini, Wilson Sauthoff, Matthew Siegfried, Holly Still, Sam Thorpe-Loversuch, Tina van de Flierdt, Ryan Venturelli, Arran Whiteford","doi":"10.1038/s41561-025-01687-3","DOIUrl":"10.1038/s41561-025-01687-3","url":null,"abstract":"Beneath Antarctica’s ice sheets, a little-observed network of liquid water connects vast landscapes and contributes to the motion of the overriding ice. When this subglacial water reaches the ocean cavity beneath ice shelves, it mixes with seawater, amplifying melt and in places forming deep channels in the base of the ice. Here we present observations from a hot-water-drilled borehole documenting subglacial water entering the ocean cavity at the grounding zone of Kamb Ice Stream and the Ross Ice Shelf. Our observations show that melt has removed approximately a third of the ice thickness, yet measurements reveal low rates of subglacial discharge in a turbid plume. Sediment cored from the channel floor shows larger discharge events occur and episodically deposit material from distinct geological domains. We quantify subglacial discharge and link our observations to the catchment upstream. We conclude that discrete discharge events are likely to dominate channel melt and sediment transport and result in the extensive ice-shelf features downstream of Kamb Ice Stream. Observations from a borehole in the Kamb Ice Stream suggest that discrete subglacial discharge events dominate channel melt and sediment transport.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 5","pages":"389-395"},"PeriodicalIF":16.1,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41561-025-01687-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933575","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 plant productivity exacerbates subsoil carbon losses under warming via nitrogen mining 植物生产力的提高通过氮开采加剧了变暖下的地下碳损失

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-07 DOI: 10.1038/s41561-025-01697-1

Mingming Wang, Shuai Zhang, Guocheng Wang, Liujun Xiao, Baojing Gu, Mianhai Zheng, Shuli Niu, Yuanhe Yang, Yiqi Luo, Ganlin Zhang, Zhou Shi, Zhongkui Luo

{"title":"Increased plant productivity exacerbates subsoil carbon losses under warming via nitrogen mining","authors":"Mingming Wang, Shuai Zhang, Guocheng Wang, Liujun Xiao, Baojing Gu, Mianhai Zheng, Shuli Niu, Yuanhe Yang, Yiqi Luo, Ganlin Zhang, Zhou Shi, Zhongkui Luo","doi":"10.1038/s41561-025-01697-1","DOIUrl":"10.1038/s41561-025-01697-1","url":null,"abstract":"Soils can be either a source or sink of atmospheric CO2 depending on how soil organic carbon (SOC) responds to climate warming and changes in plant productivity. Whereas warming typically accelerates SOC decomposition, the effect of plant productivity changes remains unclear. Here we use a space-for-change substitution approach to analyse a global dataset of SOC measurements down to 1 metre. We find that warming-induced SOC reduction in the 0–0.3-m topsoil is gradually offset by increasing plant productivity but exacerbated in the 0.3–1-m subsoil until plant productivity increase crosses a threshold of 30%. Consequently, entirely offsetting warming-induced SOC reduction in the top metre of soil requires an unrealistically high increase in plant productivity, albeit with substantial variance across ecosystems. Soil carbon-to-nitrogen ratio is the dominant predictor of the variance in SOC response, as this ratio determines whether nitrogen released during carbon loss meets the requirement for additional plant growth or whether additional nitrogen must be mined from soil organic matter. Such mining accelerates SOC losses, particularly in the subsoil, where the soil carbon-to-nitrogen ratio is lower than in topsoils. We conclude that globally, increased plant productivity may exacerbate SOC losses under climate warming, particularly in the subsoil. Soils may release more CO2 under warming when increases in plant productivity mine nitrogen from soil organic matter, according to an analysis of a global dataset of soil organic carbon measurements.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 6","pages":"510-517"},"PeriodicalIF":16.1,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Huge submarine eruptions impact global climate but produce low atmospheric sulfur outputs 巨大的海底火山喷发影响全球气候，但产生的大气硫含量较低

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-07 DOI: 10.1038/s41561-025-01692-6

引用次数: 0

Prevalent North Atlantic Deep Water during the Last Glacial Maximum and Heinrich Stadial 1 末次盛冰期北大西洋深水盛行与海因里希Stadial 1

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-06 DOI: 10.1038/s41561-025-01685-5

Patrick Blaser, Claire Waelbroeck, David J. R. Thornalley, Jörg Lippold, Frerk Pöppelmeier, Stefanie Kaboth-Bahr, Janne Repschläger, Samuel L. Jaccard

{"title":"Prevalent North Atlantic Deep Water during the Last Glacial Maximum and Heinrich Stadial 1","authors":"Patrick Blaser, Claire Waelbroeck, David J. R. Thornalley, Jörg Lippold, Frerk Pöppelmeier, Stefanie Kaboth-Bahr, Janne Repschläger, Samuel L. Jaccard","doi":"10.1038/s41561-025-01685-5","DOIUrl":"10.1038/s41561-025-01685-5","url":null,"abstract":"Deep ocean circulation modulated glacial–interglacial climates through feedbacks to the carbon cycle and energy distribution. Past work has suggested that contraction of well-ventilated North Atlantic Deep Water during glacial times facilitated carbon storage in the deep ocean and drawdown of atmospheric CO2 levels. However, the spatial extent and properties of different water masses remain uncertain, in part due to conflicting palaeoceanographic proxy reconstructions. Here we combine five independent proxies to increase confidence and reconstruct Atlantic deep water distributions during the Last Glacial Maximum (around 21 thousand years ago) and the following Heinrich Stadial 1—a time when massive ice rafting in the North Atlantic interfered with deep water formation and caused global climate shifts. We find that North Atlantic Deep Water remained widespread in both periods, although its properties shifted from a cold, well-ventilated mode to a less-ventilated, possibly warmer, mode. This finding implies a remarkable persistence of deep water formation under these cold boundary conditions, sustained by compensation between the two formation modes. Our constraints provide an important benchmark for evaluating Earth system models, which can enhance confidence in future climate projections. North Atlantic Deep Water formation was only moderately weaker than it is now during the last glacial period, even when freshwater inputs were high, according to an analysis of independent proxy records.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 5","pages":"410-416"},"PeriodicalIF":16.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41561-025-01685-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909965","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

Extreme Indian summer monsoons reduce marine productivity 极端的印度夏季季风降低了海洋生产力

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-01 DOI: 10.1038/s41561-025-01693-5

引用次数: 0

A mid-crustal tipping point between silica-undersaturated and silica-oversaturated magmas 硅质欠饱和和硅质过饱和岩浆之间的中地壳临界点

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-01 DOI: 10.1038/s41561-025-01695-3

Caroline R. Soderman, Owen M. Weller, Charles D. Beard, Nicolas Riel, Eleanor C. R. Green, Tim J. B. Holland

{"title":"A mid-crustal tipping point between silica-undersaturated and silica-oversaturated magmas","authors":"Caroline R. Soderman, Owen M. Weller, Charles D. Beard, Nicolas Riel, Eleanor C. R. Green, Tim J. B. Holland","doi":"10.1038/s41561-025-01695-3","DOIUrl":"10.1038/s41561-025-01695-3","url":null,"abstract":"Alkaline–silicate igneous complexes contain a huge diversity of rock types, ranging from silica-undersaturated (feldspathoid-normative) to silica-oversaturated (quartz-normative) compositions. At present, the controls on the formation of such compositional diversity are poorly quantified. Here we apply thermodynamic models to investigate these controls using a case study of the Blatchford Lake Igneous Complex (Canada), which is compositionally representative of worldwide alkaline–silicate systems. By modelling fractionation of a primitive mafic melt across crustal pressures, we identify a narrow (~0.5 kbar) ‘tipping point’ across which residual melts become silica-rich or alkali-rich when shallower or deeper, respectively. This tipping point is consistently present at mid-crustal pressures (3–5 kbar; ~10–15 km depth) for a range of viable primitive melts, moving to higher pressures within this range for more hydrous and more oxidized melts. Crystallization at these pressures (within barometric estimates for the complex) can therefore generate and explain the vast diversity of observed alkali-rich and silica-rich compositions. A similar tipping point is also present in other modelled mafic igneous systems at mid-crustal conditions, indicating it is a widespread phenomenon. This result implies a key role for mid-crustal mafic staging chambers in generating compositional diversity in alkaline–silicate complexes worldwide. A narrow range of pressures at mid-crustal depth represents a tipping point between silica-undersaturated and silica-oversaturated compositions crystallizing from mafic melts in alkaline–silicate igneous systems, according to a thermodynamic modelling study.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 6","pages":"555-562"},"PeriodicalIF":16.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41561-025-01695-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143893467","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

Fluctuating evolution of seawater oxygen before the Great Oxidation Event 大氧化事件前海水氧的波动演化

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-05-01 DOI: 10.1038/s41561-025-01688-2

引用次数: 0

Low sulfur emissions from 2022 Hunga eruption due to seawater–magma interactions 海水-岩浆相互作用导致2022年Hunga火山喷发的低硫排放

IF 16.1 1区地球科学

Nature Geoscience Pub Date : 2025-04-30 DOI: 10.1038/s41561-025-01691-7

Jie Wu, Shane J. Cronin, Marco Brenna, Sung-Hyun Park, Alessio Pontesilli, Ingrid A. Ukstins, David Adams, Joali Paredes-Mariño, Kyle Hamilton, Mila Huebsch, Diego González-García, Chris Firth, James D. L. White, Alexander R. L. Nichols, Terry Plank, Jitraporn Vongsvivut, Annaleise Klein, Frank Ramos, Folauhola Latu’ila, Taaniela Kula

{"title":"Low sulfur emissions from 2022 Hunga eruption due to seawater–magma interactions","authors":"Jie Wu, Shane J. Cronin, Marco Brenna, Sung-Hyun Park, Alessio Pontesilli, Ingrid A. Ukstins, David Adams, Joali Paredes-Mariño, Kyle Hamilton, Mila Huebsch, Diego González-García, Chris Firth, James D. L. White, Alexander R. L. Nichols, Terry Plank, Jitraporn Vongsvivut, Annaleise Klein, Frank Ramos, Folauhola Latu’ila, Taaniela Kula","doi":"10.1038/s41561-025-01691-7","DOIUrl":"10.1038/s41561-025-01691-7","url":null,"abstract":"The explosive January 2022 Hunga submarine eruption in Tonga injected unprecedented water volumes into the upper atmosphere, generating widespread climatic impacts. However, it ejected anomalously little sulfur compared with other eruptions of similar volume. We explain the missing sulfur with volatile budgets calculated from volcanic ash samples spanning the eruption. We show that magma was stored in a weakly stratified reservoir at 2.1 km to >5.6 km depth. Magma rose within <3 min and fragmented at 400–1,000 m below sea level. This preserves microscale chemical mingling including ~1 wt% contrasts in magmatic water concentrations. The 11-h eruption released a total of 319 Tg of magmatic water, which is <10% of that derived from magmatic seawater interaction. Comparing magmatic and residual glass sulfur concentrations shows a total release of 9.4 TgS, but >93% of this entered the ocean during submarine magma fragmentation. These results raise the concern that satellite SO2 monitoring underestimates the magma output of submarine explosions and they are probably near invisible in ice-core records, despite their climate influence caused by water injection into the upper atmosphere. Little sulfur from the 2022 Hunga submarine eruption reached the atmosphere due to seawater–magma interactions, indicating that the climate impact of this type of eruption may be underestimated, according to analysis of ash collected throughout the event.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"18 6","pages":"518-524"},"PeriodicalIF":16.1,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0