Nature Geoscience最新文献_第2页

Ocean drilling makes for more robust climate modelling of the future

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01604-0

Daniel J. Lunt, Jiang Zhu, Richard A. Wood

引用次数: 0

Redox control on rhizosphere priming in wetlands

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01584-1

Peter Mueller, J. Patrick Megonigal

{"title":"Redox control on rhizosphere priming in wetlands","authors":"Peter Mueller, J. Patrick Megonigal","doi":"10.1038/s41561-024-01584-1","DOIUrl":"10.1038/s41561-024-01584-1","url":null,"abstract":"Rhizosphere priming describes a positive or negative change in the rate of soil organic matter decomposition caused by root activity and represents an important terrestrial soil–climate feedback. Few studies have investigated rhizosphere priming in wetlands, despite their disproportionate role in the global soil carbon budget. Here we present a literature analysis to show that both positive and negative rhizosphere priming can be much stronger in wetland than upland ecosystems. We argue that differences in plant–soil microbial interactions between dominantly oxic and anoxic soil environments induce the different degrees of rhizosphere priming effects. A conceptual framework is proposed in which wetland plants control soil redox status by acting as sources of both electron donors and acceptors, thereby influencing soil carbon stability through interactions with microbial communities. We identify key uncertainties in the mechanistic and quantitative understanding of wetland rhizosphere priming and demonstrate how priming could govern wetland soil carbon dynamics and ecosystem stability in response to climate change. Rhizosphere priming effects are stronger in wetland soils than in upland soils due to the greater variation in the redox condition in the rhizosphere, according to a data analysis of existing observations.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"17 12","pages":"1209-1217"},"PeriodicalIF":15.7,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783132","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

Choppy seas for deep ocean drilling

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01616-w

引用次数: 0

The value of scientific ocean drilling for early career researchers

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01605-z

Dustin T. Harper, Adriane R. Lam, Donald Penman, Joost Frieling, Natalia Varela, Sayantani Chatterjee

引用次数: 0

The palaeoclimate potential of continental scientific drilling

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01603-1

Jonathan Obrist-Farner, Lesleigh Anderson, Paul Baker, Melissa A. Berke, Emily J. Beverly, Julie Brigham-Grette, Erik Brown, Isla S. Castañeda, Alan L. Deino, Sherilyn C. Fritz, Steven L. Goldstein, Natalie M. Kehrwald, Matthew Kirby, Kenneth G. Miller, Paul Olsen, Lisa Park Boush, Marci M. Robinson, James Russell, Gerilyn S. Soreghan

引用次数: 0

Methane leakage through the sulfate–methane transition zone of the Baltic seabed

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-06 DOI: 10.1038/s41561-024-01594-z

Laura L. Lapham, Karen G. Lloyd, Henrik Fossing, Sabine Flury, Jørn Bo Jensen, Marc J. Alperin, Gregor Rehder, Wanda Holzhueter, Timothy Ferdelman, Bo Barker Jørgensen

{"title":"Methane leakage through the sulfate–methane transition zone of the Baltic seabed","authors":"Laura L. Lapham, Karen G. Lloyd, Henrik Fossing, Sabine Flury, Jørn Bo Jensen, Marc J. Alperin, Gregor Rehder, Wanda Holzhueter, Timothy Ferdelman, Bo Barker Jørgensen","doi":"10.1038/s41561-024-01594-z","DOIUrl":"10.1038/s41561-024-01594-z","url":null,"abstract":"Anaerobic oxidation of methane at the sulfate–methane transition in marine sediments is generally considered to be a near-perfect barrier against methane release from the seabed, but the mechanisms involved are not well understood. On the basis of a survey of Baltic Sea sediments we show that a highly variable amount (0–100%) of subseafloor methane leaks through the sulfate–methane transition. The diffusive methane flux to the sediment–water interface is often high, reaching over 2 mmol m−2 d−1. Even though anaerobic methane oxidation is thermodynamically and kinetically favoured where methane fluxes are high, there is no evidence of methane oxidation in concentration, isotope and modelling results. Cores that lacked anaerobic methane oxidation had high modelled organic matter mineralization rates, suggesting that a possible mechanism could be high electron donor availability due to elevated H2 concentrations, as has been predicted by laboratory studies. We show that methane leakage across the sulfate–methane transition is widespread in organic-rich marine sediments. Inhibition of anaerobic methane oxidation in organic-rich marine sediments causes widespread methane leakage from the seabed, according to an analysis of sediment cores from the Baltic Sea.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"17 12","pages":"1277-1283"},"PeriodicalIF":15.7,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783131","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

Erosional cascade during the 2021 Melamchi flood

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2024-12-04 DOI: 10.1038/s41561-024-01596-x

Chan-Mao Chen, James Hollingsworth, Marin K. Clark, Deepak Chamlagain, Sujata Bista, Dimitrios Zekkos, Anuj Siwakoti, A. Joshua West

引用次数: 0

Multi-decadal collapse of East Antarctica’s Conger–Glenzer Ice Shelf

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-03 DOI: 10.1038/s41561-024-01582-3

Catherine C. Walker, Joanna D. Millstein, Bertie W. J. Miles, Sue Cook, Alexander D. Fraser, Andreas Colliander, Sidharth Misra, Luke D. Trusel, Susheel Adusumilli, Chancelor Roberts, Helen A. Fricker

{"title":"Multi-decadal collapse of East Antarctica’s Conger–Glenzer Ice Shelf","authors":"Catherine C. Walker, Joanna D. Millstein, Bertie W. J. Miles, Sue Cook, Alexander D. Fraser, Andreas Colliander, Sidharth Misra, Luke D. Trusel, Susheel Adusumilli, Chancelor Roberts, Helen A. Fricker","doi":"10.1038/s41561-024-01582-3","DOIUrl":"10.1038/s41561-024-01582-3","url":null,"abstract":"Antarctica is currently losing net mass to the ocean primarily from West Antarctica and the Antarctic Peninsula, which together hold ~5.5 m of sea level rise potential. Yet, the East Antarctic Ice Sheet stores almost ten times more ice, and its evolution contributes significant uncertainty to sea level rise projections, mainly due to insufficient process-scale observations. Here we report the collapse of the Conger–Glenzer Ice Shelf in East Antarctica that culminated with its March 2022 disintegration. We use a combination of observations to document its evolution over four stages spanning 25 years, starting 1997–2000 when small calving events isolated it from the Shackleton Ice Shelf. In 2011, it retreated from a central pinning point, followed by relative calving quiescence for a decade; the remaining ~1,200 km2 of the ice shelf disintegrated over a few days in mid-March 2022. These observations of the Conger–Glenzer Ice Shelf collapse shed light on the processes involved, in particular, the impacts of ocean and atmospheric warming and extreme weather events. Ice shelf collapses, rare in the satellite record so far, have substantial implications for the stability of the Antarctic ice sheet and its contribution to future sea level rise. Satellite observations reveal that the Conger–Glenzer Ice Shelf collapse in East Antarctica occurred in four stages spanning a period of 25 years, culminating in its rapid disintegration in March 2022.","PeriodicalId":19053,"journal":{"name":"Nature Geoscience","volume":"17 12","pages":"1240-1248"},"PeriodicalIF":15.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760233","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

Ice-shelf disintegration in East Antarctica

IF 15.7 1区地球科学

Nature Geoscience Pub Date : 2024-12-03 DOI: 10.1038/s41561-024-01607-x

Karen E. Alley

引用次数: 0

Author Correction: Earth-like lithospheric thickness and heat flow on Venus consistent with active rifting 作者更正：金星上类似地球的岩石圈厚度和热流与活跃的断裂一致

IF 18.3 1区地球科学

Nature Geoscience Pub Date : 2024-11-28 DOI: 10.1038/s41561-024-01595-y

Suzanne E. Smrekar, Colby Ostberg, Joseph G. O’Rourke

引用次数: 0