Limnology and Oceanography最新文献_第3页

Latitude, sea ice, and glaciers are important drivers of submerged vegetation distributions in the Arctic coastal waters along east Greenland 纬度、海冰和冰川是格陵兰东部北极沿海水域水下植被分布的重要驱动因素

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-23 DOI: 10.1002/lno.70056

Susse Wegeberg, Jozef Wiktor, Jannie Fries Linnebjerg, Ole Geertz‐Hansen

{"title":"Latitude, sea ice, and glaciers are important drivers of submerged vegetation distributions in the Arctic coastal waters along east Greenland","authors":"Susse Wegeberg, Jozef Wiktor, Jannie Fries Linnebjerg, Ole Geertz‐Hansen","doi":"10.1002/lno.70056","DOIUrl":"https://doi.org/10.1002/lno.70056","url":null,"abstract":"Present study is the first quantitative and coherent presentation of the submerged marine vegetation along the Greenland east coast, from 65.5°N to 76.8°N, based on data obtained from 286 underwater video transects. Based on cluster analysis, four different marine submerged vegetation community figurations were identified: a southern and deeper kelp forest including Laminaria solidungula and Agarum clathratum, the marine vegetation along the Blosseville coast, seaweed meadows characterized by, e.g., submerged Fucus distichus, and high‐arctic kelp forest. The habitat figurations were related to and potentially explained by drivers considered to be key for their spatial distribution. The drivers considered were latitude as a proxy for light conditions with stronger seasonality and receding light conditions toward the north, suitable substratum for the marine vegetation to establish and grow, and the sea ice conditions with respect to light attenuation and scouring. Two of the vegetation types were explained by latitude, whereas the two vegetation types identified for the mid segment of the surveyed coastline were considered to be more correlated to local/regional conditions such as the presence of dynamic sea ice and glaciers as well as smaller‐sized hard substratum. Some degree of marine vegetation/kelp forest pauperization was observed with increasing latitude, expressed as a decrease in coverage and depth distribution. The vegetation belt was declining from a depth of 34 to 18 m within the northward latitudinal gradient surveyed, although for some species, no change in species‐specific maximal depth limits could be observed.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"7 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866926","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

Autonomous instrumentation and big data: New windows, knowledge, and breakthroughs in the aquatic sciences 自主仪器和大数据：水生科学的新窗口、新知识和新突破

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-23 DOI: 10.1002/lno.70040

Steeve Comeau, Werner Eckert, Dominique Lefevre, Julia C. Mullarney, Kevin C. Rose, Elisa Schaum, Heidi M. Sosik, Yuichiro Takeshita

引用次数: 0

Soil carbon dioxide levels control salt marsh alkalinity generation 土壤二氧化碳水平控制盐沼碱度的产生

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-23 DOI: 10.1002/lno.70062

Panunporn Tutiyasarn, Peter Mueller, Gibran Romero‐Mujalli, Bryce Van Dam, Jens Hartmann, Philipp Porada

{"title":"Soil carbon dioxide levels control salt marsh alkalinity generation","authors":"Panunporn Tutiyasarn, Peter Mueller, Gibran Romero‐Mujalli, Bryce Van Dam, Jens Hartmann, Philipp Porada","doi":"10.1002/lno.70062","DOIUrl":"https://doi.org/10.1002/lno.70062","url":null,"abstract":"Recent studies have highlighted salt marshes as hotspots for alkalinity generation and export to coastal waters. Several studies emphasize the critical role of anaerobic microbial metabolism as a major source of total alkalinity (TA) generation in marsh soils. However, the contribution of mineral dissolution to salt marsh TA generation has yet to be extensively studied from a mechanistic viewpoint. Therefore, we conducted a lab‐based soil column experiment to investigate the influence of soil pCO2 levels on TA generation in organic‐poor minerogenic salt marsh soils, considering their significance in soil mineral dissolution. Results showed a maximum TA increase of up to twofold when the pCO2 level was increased from 440 to 150,000 μatm. The relationship between TA and net Ca2+ release was 1.73, close to the theoretical stoichiometric ratio of HCO3− to Ca2+ for calcium carbonate dissolution. In addition, the net release of dissolved silica responded significantly to the change in soil pCO2. Therefore, calcium carbonate dissolution was identified as the possible dominant driving force behind TA generation in the minerogenic salt marsh soil, with an additional contribution from silicate minerals. We suggest high pCO2 levels, such as the rhizosphere, might be the hotspot for alkalinity generation via mineral dissolution. Our findings advance the mechanistic understanding of TA generation in salt marshes and highlight the importance of the overlooked role of inorganic carbon. Evaluating the contribution of blue carbon ecosystems to alkalinity production is essential for integrating the roles of both organic and inorganic carbon into climate mitigation assessments.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"17 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866927","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

Correction to “Environmental and ecological drivers of harmful algal blooms revealed by automated underwater microscopy” 更正“自动水下显微镜显示的有害藻华的环境和生态驱动因素”

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-15 DOI: 10.1002/lno.70057

引用次数: 0

Large sediment methane production potential in reservoirs compared to lakes and rivers 与湖泊和河流相比，水库沉积物甲烷生产潜力大

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-14 DOI: 10.1002/lno.70063

Pascal Bodmer, Christoph Bors, Liu Liu, Andreas Lorke

{"title":"Large sediment methane production potential in reservoirs compared to lakes and rivers","authors":"Pascal Bodmer, Christoph Bors, Liu Liu, Andreas Lorke","doi":"10.1002/lno.70063","DOIUrl":"https://doi.org/10.1002/lno.70063","url":null,"abstract":"Inland waters emit a globally significant amount of methane (CH4) into the atmosphere. Measurements of potential CH4 production rates in the sediment can help constrain the magnitude of CH4 sources and time‐averaged emission rates. We explored the magnitude, variability, and drivers of potential CH4 production rates in the sediment, based on compiled measurements (238 sediment cores from 72 aquatic systems) following a standardized laboratory incubation procedure. The data reveal > 4‐fold higher potential CH4 production rates in reservoir sediments than lakes and > 14‐fold higher than rivers after being standardized for temperature. Sediment organic carbon content and depth below the sediment–water interface are universal drivers for potential CH4 production rates across freshwater ecosystems. The disproportional high CH4 production rate in sediments from human‐made water bodies calls for more comprehensive monitoring of their CH4 emissions to inform carbon footprint and inventory efforts. This first meta‐analysis of potential CH4 production rates in sediments from different types of freshwater aquatic systems may help with process‐based modeling of CH4 emissions from individual water bodies in larger‐scale assessments.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"7 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832519","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

Long‐range transport of terrestrial particulate organic carbon to the open ocean by sediment resuspension 沉积物再悬浮将陆地颗粒有机碳远距离迁移到公海

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-14 DOI: 10.1002/lno.70059

Hyekyung Park, Hanbyul Lee, Nahyeon Kwon, Sojin Park, Jihyun Park, Weol Ae Lim, Guebuem Kim

{"title":"Long‐range transport of terrestrial particulate organic carbon to the open ocean by sediment resuspension","authors":"Hyekyung Park, Hanbyul Lee, Nahyeon Kwon, Sojin Park, Jihyun Park, Weol Ae Lim, Guebuem Kim","doi":"10.1002/lno.70059","DOIUrl":"https://doi.org/10.1002/lno.70059","url":null,"abstract":"The transport of particulate organic carbon (POC) from land to deep‐sea sediments is a critical component of the global carbon cycle. However, the transport processes of terrestrial POC across continental shelves remain poorly understood due to the complexity of these systems. In this study, we investigated the vertical fluxes and fates of terrestrial vs. marine POC using stable carbon isotope ratios (δ13C) and 234Th tracers along two transects in the southern coastal region of Korea. The POC concentrations were highest in the surface layer and decreased with depth, with a slight increase near the seafloor. The δ13C values revealed that terrestrial POC contributed 29% ± 24% of the total POC, with higher contributions at the innermost stations and in the bottom layer. Based on 234Th–238U disequilibria, the residence times of particulate 234Th (8.1 ± 3.6 d) were significantly longer than those of dissolved 234Th (3.7 ± 2.2 d). The much higher vertical fluxes of terrestrial POC in the deeper layer relative to the upper layer suggest that terrestrial POC undergoes multiple turnover cycles through sediment resuspension before burial, while marine POC degrades preferentially in the course of settling. These findings highlight that effective sediment resuspension and the refractory nature of terrestrial POC allow for its long‐range transport (> 200 km) to the deep Ulleung Basin in the East Sea (Japan Sea). This study sheds new light on the mechanisms driving the transport of terrestrial POC from coastal regions to the deep ocean.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"40 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832518","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

Nutrient inversion but not warming drive changes in periphyton biomass and composition in shallow lake mesocosms 营养反转而非气候变暖驱动浅湖中观模型中的浮游生物生物量和组成发生变化

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-14 DOI: 10.1002/lno.70053

Olivera Stamenković, Juan Pablo Pacheco, Eti E. Levi, Erik Jeppesen, Thomas Alexander Davidson

{"title":"Nutrient inversion but not warming drive changes in periphyton biomass and composition in shallow lake mesocosms","authors":"Olivera Stamenković, Juan Pablo Pacheco, Eti E. Levi, Erik Jeppesen, Thomas Alexander Davidson","doi":"10.1002/lno.70053","DOIUrl":"https://doi.org/10.1002/lno.70053","url":null,"abstract":"Periphyton plays an important functional role in shallow lakes and is sensitive to variation in nutrient availability and global warming. Understanding the responses of periphyton to changes in nutrient availability in contrasting warming scenarios can contribute to the development of more efficient techniques for the restoration of lakes in a future warmer world. We analyzed the periphyton response to early eutrophication and oligotrophication under three different warming scenarios and explored the associated environmental drivers of periphyton in 24 shallow lake mesocosms. These were initially set up in 2003 with two nutrient treatments (with or without nutrient addition) and three temperatures (ambient, A2 IPCC scenario and A2 increased by 50%) following a full factorial design. In 2023, the nutrient treatment was inverted, starting nutrient addition in low nutrient mesocosms (nutrient increase) and stopping nutrient addition (nutrient decrease) in the remaining. Artificial plants were placed in each mesocosm to allow periphyton to develop for 21 d, both before and after the inversion of the nutrient treatments. We found marked changes in periphyton biomass and composition to the nutrient inversion, but no response to warming. Nutrient decrease induced lower periphyton biomass and compositional changes at species and group levels. Nutrient increase had no effect on biomass accrual or species composition but altered the group composition. Our results suggest that lower nitrate availability was a crucial factor driving biomass and compositional changes with the cessation of nutrient addition, while a combination of environmental variables explained the altered periphyton group composition in the nutrient increase treatment.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"27 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832520","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

Role of virus‐mediated lysis in spatiotemporal dynamics of prokaryotic communities in river–estuary–coastal ecosystems 病毒介导的溶解在河流-河口-海岸生态系统原核生物群落时空动态中的作用

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-14 DOI: 10.1002/lno.70051

Lu Liu, Qi Chen, Jiaxin Chen, Nengwang Chen, Kevin Xu Zhong, Qiang Zheng

{"title":"Role of virus‐mediated lysis in spatiotemporal dynamics of prokaryotic communities in river–estuary–coastal ecosystems","authors":"Lu Liu, Qi Chen, Jiaxin Chen, Nengwang Chen, Kevin Xu Zhong, Qiang Zheng","doi":"10.1002/lno.70051","DOIUrl":"https://doi.org/10.1002/lno.70051","url":null,"abstract":"Viral lysis accounts for approximately 50% of prokaryotic mortality, significantly influencing the diversity, composition, and succession of prokaryotic communities. Despite its importance, the specific influence of viral lysis on seasonal dynamics within aquatic ecosystems remains poorly understood. In this study, we investigated the seasonal dynamics of prokaryotes in the river–estuary–coastal ecosystem surrounding Xiamen Island and explored the environmental factors and virus‐mediated cell lysis driving microbial seasonal successions across spatiotemporal scales. A taxon‐specific cell lysis was applied to evaluate the contribution of viral lysis to seasonal variations in prokaryotes. Our findings revealed distinct spatiotemporal successions within the prokaryotic community structure, where temporal‐related factors, spatial‐related factors, and virus‐mediated cell lysis contribute comparably to the seasonal variation of prokaryotes. The viral lysis controls on prokaryotic structures were determined by a significant negative correlation between the total microbial community and the cell lysis index (CLI) from amplicon sequence variant (ASV) to order levels. Viral lytic shaping on prokaryotic communities was more pronounced in the estuary–coastal compared to the river region, with similar seasonal variations noted. Specific ASVs, such as ASV3 (Nitrosopumilales), ASV2 (Synechococcales), ASV16 (Nitrosopumilales), and ASV17 (Oceanospirillales) were significantly correlated with CLI, highlighting the pivotal role of viral lysis in their seasonal succession. This study highlights the intricate interplay between microbial populations and viral lysis across spatiotemporal scales, enhancing our understanding of how top‐down (virus‐mediated cell lysis) and bottom‐up (environmental factors) controls drive the seasonal variations in prokaryotic communities.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"3 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832521","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

Stratification stability of tropical lakes and their sensitivity to climate 热带湖泊的分层稳定性及其对气候的敏感性

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-14 DOI: 10.1002/lno.70055

Tongyao Pu, G. Douglas Haffner, Sean A. Crowe, Sergei Katsev

{"title":"Stratification stability of tropical lakes and their sensitivity to climate","authors":"Tongyao Pu, G. Douglas Haffner, Sean A. Crowe, Sergei Katsev","doi":"10.1002/lno.70055","DOIUrl":"https://doi.org/10.1002/lno.70055","url":null,"abstract":"Tropical lakes experience less thermal convection than temperate lakes and can be stably stratified by temperature gradients alone. Deep tropical lakes are often presumed meromictic, but conditions for sustained meromixis are poorly constrained. Here, we investigate the stratification stability of a deep (200 m) tropical Lake Towuti (Indonesia) and analyze its sensitivity to meteorological and climatic parameters using exploratory hydrodynamic simulations. The inferred effects on water chemistry are further evaluated with a reactive‐transport biogeochemical model. In contrast to the previous assumption of meromixis, our results suggest that in 2008 Lake Towuti experienced mixing over most of its water column, with the attendant weak oxygenation of the previously anoxic lower strata. The lake likely remained stratified afterwards, but the chemical distributions measured after the episode, particularly during the International Continental Scientific Drilling Program in 2015, were out of steady state, and may be still evolving in time. We find the thermal stratification to be most sensitive to average air temperatures and wind speeds and predict further stabilization of the lake by climate change. We also describe a negative feedback mechanism that can stabilize oligomictic tropical lakes for a number of years after the episodes of mixing and cooling, and infer that such episodes should be significantly less frequent in deeper lakes.","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"4 1","pages":""},"PeriodicalIF":4.5,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832517","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

Correction to “Cascading, interactive, and indirect effects of climate change on aquatic communities, habitats, and ecosystems” 更正“气候变化对水生群落、栖息地和生态系统的级联、相互作用和间接影响”

IF 4.5 1区地球科学

Limnology and Oceanography Pub Date : 2025-04-10 DOI: 10.1002/lno.70044

引用次数: 0