Limnology and Oceanography Letters最新文献_第7页

Concentration and compositional controls on degradation of permafrost-derived dissolved organic matter on the Qinghai–Tibetan Plateau 青藏高原永冻土溶解有机物降解的浓度和组成控制因素

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-04-09 DOI: 10.1002/lol2.10388

Yinghui Wang, Yasong Wang, Lulu Han, Amy M. McKenna, Anne M. Kellerman, Robert G. M. Spencer, Yuanhe Yang, Yunping Xu

{"title":"Concentration and compositional controls on degradation of permafrost-derived dissolved organic matter on the Qinghai–Tibetan Plateau","authors":"Yinghui Wang, Yasong Wang, Lulu Han, Amy M. McKenna, Anne M. Kellerman, Robert G. M. Spencer, Yuanhe Yang, Yunping Xu","doi":"10.1002/lol2.10388","DOIUrl":"10.1002/lol2.10388","url":null,"abstract":"Understanding the fate of permafrost-derived dissolved organic matter (DOM) is critical for unraveling its role in carbon cycling. However, it remains unclear whether the high lability of permafrost-derived DOM can be attributed to intrinsic chemical properties or elevated carbon concentrations. We investigated the dynamics of permafrost DOM from the Qinghai–Tibetan Plateau using both biodegradation and photodegradation experiments. Biodegradation and photodegradation of permafrost-derived DOM exhibited distinct qualitative preferences for specific chemical groups (i.e., peptide-like and aromatics, respectively). Notably, reducing the initial concentration of dissolved organic carbon (DOC) by half and a quarter resulted in shifts in biodegradable DOC content from 11.2% to 11.5% and 8.5%, respectively, accompanied by a corresponding decrease in the biodegradation rate from 0.11 to 0.06 and 0.03. This insight highlights the importance of recognizing the interplay between DOM quality and concentration and bears broader significance for our understanding of the fate of permafrost-derived DOM in natural ecosystems.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 5","pages":"563-572"},"PeriodicalIF":5.1,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10388","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140542258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Widespread warming of Earth's estuaries 地球河口普遍变暖

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-04-04 DOI: 10.1002/lol2.10389

Punwath Prum, Lora Harris, John Gardner

引用次数: 0

Plankton blooms over the annual cycle shape trophic interactions under climate change 浮游生物在年周期中的大量繁殖形成了气候变化下的营养相互作用

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-04-03 DOI: 10.1002/lol2.10385

Kinlan M. G. Jan, Baptiste Serandour, Jakob Walve, Monika Winder

引用次数: 0

Earlier ice melt increases hypolimnetic oxygen despite regional warming in small Arctic lakes 尽管北极小湖泊出现区域性变暖，但冰层提前融化会增加下沉氧量

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-04-01 DOI: 10.1002/lol2.10386

Václava Hazuková, Benjamin T. Burpee, Robert M. Northington, N. John Anderson, Jasmine E. Saros

{"title":"Earlier ice melt increases hypolimnetic oxygen despite regional warming in small Arctic lakes","authors":"Václava Hazuková, Benjamin T. Burpee, Robert M. Northington, N. John Anderson, Jasmine E. Saros","doi":"10.1002/lol2.10386","DOIUrl":"10.1002/lol2.10386","url":null,"abstract":"Although trends toward earlier ice-out have been documented globally, the links between ice-out timing and lake thermal and biogeochemical structure vary spatially. In high-latitude lakes where ice-out occurs close to peak intensity of solar radiation, these links remain unclear. Using a long-term dataset from 13 lakes in West Greenland, we investigated how changing ice-out and weather conditions affect lake thermal structure and oxygen concentrations. In early ice-out years, lakes reach higher temperatures across the water column and have deeper epilimnia. Summer hypolimnia are the warmest (~ 11°C) in years when cooler air temperatures follow early ice-out, allowing full lake turnover. Due to the higher potential for substantive spring mixing in early ice-out years, a warmer hypolimnion is associated with higher dissolved oxygen concentrations. By affecting variability in spring mixing, the consequences of shifts in ice phenology for lakes at high latitudes differ from expectations based on temperate regions.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"258-267"},"PeriodicalIF":7.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10386","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140340809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Measurements of the inherent optical properties of aqueous suspensions of microplastics 测量微塑料水悬浮液的固有光学特性

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-03-25 DOI: 10.1002/lol2.10387

Daniel Koestner, Robert Foster, Ahmed El-Habashi, Shea Cheatham

引用次数: 0

Plant-sediment interactions decouple inorganic from organic carbon stock development in salt marsh soils 植物与沉积物的相互作用使盐沼土壤中无机碳储量与有机碳储量的发展脱钩

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-03-09 DOI: 10.1002/lol2.10382

Dirk Granse, Antonia Wanner, Martin Stock, Kai Jensen, Peter Mueller

引用次数: 0

Particulate organic carbon sedimentation triggers lagged methane emissions in a eutrophic reservoir 微粒有机碳沉积引发富营养化水库甲烷滞后排放

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-03-08 DOI: 10.1002/lol2.10379

Andrés Martínez-García, Ignacio Peralta-Maraver, Eva Rodríguez-Velasco, Gema L. Batanero, Miriam García-Alguacil, Félix Picazo, Juan Calvo, Rafael Morales-Baquero, Francisco J. Rueda, Isabel Reche

{"title":"Particulate organic carbon sedimentation triggers lagged methane emissions in a eutrophic reservoir","authors":"Andrés Martínez-García, Ignacio Peralta-Maraver, Eva Rodríguez-Velasco, Gema L. Batanero, Miriam García-Alguacil, Félix Picazo, Juan Calvo, Rafael Morales-Baquero, Francisco J. Rueda, Isabel Reche","doi":"10.1002/lol2.10379","DOIUrl":"10.1002/lol2.10379","url":null,"abstract":"Reservoirs act as carbon sinks when sedimentation of particulate organic carbon (POC) exceeds CO2 and CH4 emissions. Here, we study the poorly explored process where phytoplankton-derived acidic polysaccharides (APs) aggregate into particulate organic matter, promoting carbon export to sediments. This source of POC in sediments can mineralize to CO2 and CH4 over various timescales. Our research, centered on a Mediterranean reservoir, elucidates phenological trends of APs and POC sedimentation and identifies their predominant drivers. Our findings present synchronic sedimentation patterns of POC and APs but identify a 2-week delay between POC sedimentation and CH4 emissions. Despite its eutrophic status, our data demonstrate this reservoir's role as a carbon sink, sequestering 4.33 g C m−2 yr−1. This highlights the need to consider various time scales when quantifying carbon budgets in reservoirs.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"247-257"},"PeriodicalIF":7.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10379","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140069767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dissolved organic matter offsets the detrimental effects of climate change in the nitrogen-fixing cyanobacterium Crocosphaera 溶解有机物可抵消固氮蓝藻中气候变化的不利影响

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-03-05 DOI: 10.1002/lol2.10380

Alba Filella, Jacqueline Umbricht, Angelina Klett, Angela Vogts, Thomas Vannier, Olivier Grosso, Maren Voss, Lasse Riemann, Mar Benavides

{"title":"Dissolved organic matter offsets the detrimental effects of climate change in the nitrogen-fixing cyanobacterium Crocosphaera","authors":"Alba Filella, Jacqueline Umbricht, Angelina Klett, Angela Vogts, Thomas Vannier, Olivier Grosso, Maren Voss, Lasse Riemann, Mar Benavides","doi":"10.1002/lol2.10380","DOIUrl":"10.1002/lol2.10380","url":null,"abstract":"Diazotrophs provide a significant reactive nitrogen source in the ocean. Increased warming and stratification may decrease nutrient availability in the future, forcing microbial communities toward using dissolved organic matter (DOM). Not depending on reactive nitrogen availability, diazotrophs may be “winners” in a nutrient-depleted ocean. However, their ability to exploit DOM may influence this success. We exposed cultures of the widespread Crocosphaera to low (26°C, pH 8.1), moderate (28°C, pH 8.0), and extreme (30°C, pH 7.9) climate change scenarios, under control or DOM-amended conditions. Growth was suboptimal in the low and extreme treatments and favored in the moderate treatment. DOM was preferred as a carbon source regardless of the treatment and promoted N2 fixation in extreme conditions. This was reflected in the increased expression of photosynthesis genes to obtain energy. DOM provides Crocosphaera with a key ecological advantage, possibly dictating diazotroph-derived nitrogen inputs in the future ocean.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"296-306"},"PeriodicalIF":7.8,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10380","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140038104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Lagging spawning and increasing phenological extremes jeopardize walleye (Sander vitreus) in north-temperate lakes 产卵滞后和极端物候的增加危及北温带湖泊中的马口铁（Sander vitreus）

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-02-26 DOI: 10.1002/lol2.10383

Martha E. Barta, Greg G. Sass, Jeffrey R. Reed, Thomas A. Cichosz, Aaron D. Shultz, Mark Luehring, Zachary S. Feiner

{"title":"Lagging spawning and increasing phenological extremes jeopardize walleye (Sander vitreus) in north-temperate lakes","authors":"Martha E. Barta, Greg G. Sass, Jeffrey R. Reed, Thomas A. Cichosz, Aaron D. Shultz, Mark Luehring, Zachary S. Feiner","doi":"10.1002/lol2.10383","DOIUrl":"10.1002/lol2.10383","url":null,"abstract":"The phenology of critical biological events in aquatic ecosystems is rapidly shifting due to climate change. Growing variability in phenological cues can increase the likelihood of trophic mismatches (i.e., mismatches in the timing of peak prey and predator abundances), causing recruitment failures in important fisheries. We assessed changes in the spawning phenology of walleye (Sander vitreus) in 194 Midwest US lakes to investigate factors influencing walleye phenological responses to climate change and associated climate variability, including ice-off timing, lake physical characteristics, and population stocking history. Ice-off phenology shifted earlier, about three times faster than walleye spawning phenology over time. Spawning phenology deviations from historic averages increased in magnitude over time, and large deviations were associated with poor offspring survival. Our results foreshadow the risks of increasingly frequent natural recruitment failures due to mismatches between historically tightly coupled spawning and ice-off phenology.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"229-236"},"PeriodicalIF":7.8,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10383","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139967514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Sea-ice loss accelerates carbon cycling and enhances seasonal extremes of acidification in the Arctic Chukchi Sea 海冰消失加速了碳循环并加剧了北极楚科奇海的季节性极端酸化现象

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-02-05 DOI: 10.1002/lol2.10378

Yixing Zhang, Yingxu Wu, Wei-Jun Cai, Xiangqi Yi, Xiang Gao, Haibo Bi, Yanpei Zhuang, Liqi Chen, Di Qi

{"title":"Sea-ice loss accelerates carbon cycling and enhances seasonal extremes of acidification in the Arctic Chukchi Sea","authors":"Yixing Zhang, Yingxu Wu, Wei-Jun Cai, Xiangqi Yi, Xiang Gao, Haibo Bi, Yanpei Zhuang, Liqi Chen, Di Qi","doi":"10.1002/lol2.10378","DOIUrl":"10.1002/lol2.10378","url":null,"abstract":"The Chukchi Sea shelf (CSS) is a highly productive region in the Arctic Ocean and it is highly efficient for absorbing atmospheric carbon dioxide and exporting and retaining carbon in the deep sea. However, with global warming, the carbon retention time in CSS may decrease, leading to less efficient carbon export. Here, we investigate the seasonal variability of carbonate chemistry in CSS using three sets of late- vs. early-summer reoccupations of the same transect. Our findings demonstrate substantially increased and rapid degradation of biologically produced organic matter and therefore acidification over time in the southern CSS due to earlier sea-ice retreat, resulting in significantly shorter carbon retention time. In sharp contrast, no increased degradation has been observed in the northern CSS where photosynthesis has just commenced. In the future, climate change would further diminish the carbon export capacity and exacerbate seasonal acidification not only within CSS but also across other polar coastal oceans.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 4","pages":"433-441"},"PeriodicalIF":5.1,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10378","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139696315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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