Limnology and Oceanography Letters最新文献

{"title":"Immediate and cumulative effects of nutrient and extreme weather disturbances on pond greenhouse gas emissions","authors":"Robert A. Johnson,&nbsp;Tyler J. Butts,&nbsp;Ellen A. Albright,&nbsp;Steven J. Hall,&nbsp;Jonathan A. Walter,&nbsp;Grace M. Wilkinson","doi":"10.1002/lol2.70121","DOIUrl":"10.1002/lol2.70121","url":null,"abstract":"<p>Ponds are significant emitters of greenhouse gases (GHGs). While eutrophication stimulates GHG emissions, responses to nutrient pulses and weather events are less clear. We investigated both immediate and cumulative effects of experimental storm-scale nutrient pulses, along with unplanned extreme heat and wind events during the experiment, on GHG fluxes in nutrient-enriched ponds compared to reference ponds. Physical disturbances had greater immediate effects on GHG fluxes than did nutrient pulses due to effects on stratification and oxygen. Extreme heat increased CO₂ flux and methanogenesis potential, while extreme wind increased CO₂ flux. The combination of nutrients and extreme heat, however, triggered physicochemical changes that stimulated GHG emissions, doubling CH₄ efflux from nutrient-enriched ponds prior to late-summer mixing. Late-summer emissions from reference ponds closed the gap in cumulative CH₄ and CO₂ efflux between treatments; however, suggesting that storm-driven nutrient loading may not increase total within-season GHG emissions from shallow aquatic systems.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147519205","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}

{"title":"Temporal variation of particle flux in the Seychelles–Chagos Thermocline Ridge region of the western Indian Ocean (2022–2024): Links to the Indian Ocean Dipole and El Niño–Southern Oscillation","authors":"Junhyeong Seo,&nbsp;Sosul Cho,&nbsp;Sujin Kang,&nbsp;Intae Kim,&nbsp;Dong-Jin Kang,&nbsp;Dongseon Kim","doi":"10.1002/lol2.70119","DOIUrl":"10.1002/lol2.70119","url":null,"abstract":"<p>The Seychelles–Chagos Thermocline Ridge is an upwelling region in the western Indian Ocean, but its role in sinking particle flux remains unclear. We present sediment trap records (July 2022 to June 2024) at 1000 and 2500 m to reveal variations in particle flux and composition. During the first period (July 2022 to June 2023), particulate organic carbon (POC) fluxes, accompanied by CaCO₃ and biogenic opal peaks, reached 6.7 mg m⁻² d⁻¹ and were linked to negative-to-positive transitions of the Indian Ocean Dipole (IOD) and El Niño–Southern Oscillation that enhanced upwelling and nutrient supply. The ballasting effect increased transfer efficiency further during these high-flux events. Conversely, during the second period (July 2023 to June 2024), under positive IOD and ENSO phases and with reduced CaCO₃ and biogenic opal fluxes, POC fluxes declined sharply. These findings highlight the combined influence of climate variability and mineral ballasting on the carbon cycle.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147519208","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}

{"title":"Climate change and El Niño Southern Oscillation influence on mixing regime and water quality in a deep tropical mountain lake","authors":"Ovidio García-Oliva,&nbsp;Margaret A. Dix,&nbsp;Mónica M. Martínez-Fausto,&nbsp;Juan Estuardo Bocel,&nbsp;Jorge Garcia-Polo,&nbsp;Natalia Vargas-López,&nbsp;Fátima Reyes Morales,&nbsp;Sharon van Tuylen,&nbsp;Michael W. Dix","doi":"10.1002/lol2.70115","DOIUrl":"10.1002/lol2.70115","url":null,"abstract":"<p>Climate change alters lake functioning, water quality, and aquatic biota; yet our understanding of this process is poor for deep tropical mountain lakes. A 15-yr dataset (2010–2024) from Lake Atitlán, Guatemala, revealed climate change impacts on a tropical lake ecosystem and showed a warming trend of 0.34 ± 0.14°C per decade that intensified during warmer phases of the El Niño-Southern Oscillation. Increased air temperatures and reduced wind speeds were related to shallower thermocline depths and stronger stratification that prolonged anoxia and deteriorated deep-water quality during stagnation. Years with complete mixing released phosphorus to the surface, created low dissolved inorganic nitrogen-to-phosphorus ratios associated with cyanobacteria blooms (notably in 2011–2013, 2015, and 2018), and altered water quality. These findings highlight the influence of climate change on physicochemical dynamics that modify ecosystem health and emphasize the need for ongoing research to sustain ecosystem services and prepare vulnerable populations for future scenarios.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147519209","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}

{"title":"Seasons and seasonality in lakes: A synthesis amid global change","authors":"Abigail S. L. Lewis,&nbsp;David C. Richardson,&nbsp;Dexter W. Howard,&nbsp;Cayelan C. Carey,&nbsp;Benjamin M. Kraemer,&nbsp;Yael Amitai,&nbsp;Sheel Bansal,&nbsp;Elvira de Eyto,&nbsp;Hans-Peter Grossart,&nbsp;Kathryn K. Hoffman,&nbsp;Rachel A. Hovel,&nbsp;Lesley Knoll,&nbsp;Isabella A. Oleksy,&nbsp;Arianto Budi Santoso,&nbsp;Martin Schmid,&nbsp;Robert Schwefel,&nbsp;Dietmar Straile,&nbsp;Xinyu Sun,&nbsp;Gesa A. Weyhenmeyer,&nbsp;Whitney M. Woelmer,&nbsp;Sabine Wollrab,&nbsp;Petr Znachor","doi":"10.1002/lol2.70116","DOIUrl":"10.1002/lol2.70116","url":null,"abstract":"<p>Seasonality in environmental conditions plays a fundamental role in shaping lake ecosystems. However, patterns of seasonality vary worldwide, and these patterns are shifting over time amid global change. Thus, it is increasingly important to evaluate how seasons and seasonality are represented in lake ecosystem research. Here, we used a literature review and global data analysis to synthesize approaches for conceptualizing seasons and seasonality in lakes. We found that a wide range of criteria are used to delineate discrete seasons in published literature, including fixed dates (e.g., months, solstice/equinox), environmental thresholds (e.g., temperature and precipitation cutoffs), and lake-specific indicators (e.g., ice cover, plankton phenology). Analyzing data from lakes worldwide, we found that using different criteria to define the same season resulted in divergent interpretations of ecosystem states. Based on our synthesis, we offer recommendations for how to incorporate seasonality into lake research and communications amid global change.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147519314","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}

{"title":"A new approach to predicting and understanding cyanobacteria bloom toxicity","authors":"Anusuya Willis,&nbsp;Michele A. Burford","doi":"10.1002/lol2.70117","DOIUrl":"10.1002/lol2.70117","url":null,"abstract":"&lt;p&gt;We are facing a crisis in ever expanding toxic freshwater cyanobacteria blooms. The ability to assess the risk of bloom toxicity, and hence develop effective management plans, is critical to ensure safe drinking water and a healthy environment. However, despite years of research, toxin yields in blooms cannot be effectively predicted (Busari et al. &lt;span&gt;2023&lt;/span&gt;; de Figueiredo &lt;span&gt;2024&lt;/span&gt;; Marrone et al. &lt;span&gt;2024&lt;/span&gt;; Rousso et al. &lt;span&gt;2020&lt;/span&gt;). We need to change our thinking and our approach to understanding toxicity in cyanobacteria blooms: this is both a challenge and an opportunity.&lt;/p&gt;&lt;p&gt;Toxin production as cyanobacteria bloom leads to severe environmental, social, and economic problems. Cyanotoxins pollute freshwater ecosystems with impacts that include a reduction in biodiversity, killing fish, birds, and mammals, and significant financial costs to remove toxins from human drinking water. The main cyanotoxins produced by freshwater cyanobacteria are neurotoxins (e.g., saxitoxin and anatoxins) or hepatotoxins (e.g., microcystins and cylindrospermopsins): posing serious health effects on the nervous system, liver, and other major organs (Pearson et al. &lt;span&gt;2016&lt;/span&gt;). Large blooms have affected major lakes and drinking water sources such as Lake Erie, North America, and Lake Taihu, China, as well as smaller water reservoirs worldwide. Effective management and modeling rely on accurate quantification of toxin types and concentrations. Critically, bloom toxicity varies temporally and spatially, with different cyanobacterial species and strains producing different toxins or in different amounts. Spatially, blooms can be “patchy” in their toxicity, with “hot spots” of high toxin yield which can be a result of an accumulation of cells (e.g., scums) from wind action; higher toxin cell quotas; or a higher proportion of toxic strains (Puddick et al. &lt;span&gt;2016&lt;/span&gt;). In Lake Erie (Chaffin et al. &lt;span&gt;2021&lt;/span&gt;) microcystin concentrations were shown to vary by an order of magnitude (5–50 &lt;i&gt;μ&lt;/i&gt;g L&lt;sup&gt;−1&lt;/sup&gt;), within a 5 km radius. There were also inconsistencies in ratios of chlorophyll &lt;i&gt;a&lt;/i&gt; to microcystin, suggesting variation in the toxin cell quota, and the proportion of toxic to nontoxic cells, which ranged from 15.8% to 34% of the &lt;i&gt;Microcystis&lt;/i&gt; population. In Lake Rotorua, New Zealand, spatial distribution of microcystin cell quotas, on two sampling times, varied 148- and 362-fold, with the increased cell quotas associated with high cell concentrations (Wood et al. &lt;span&gt;2021&lt;/span&gt;). In multiple reservoirs in France, spatial variation between reservoirs was attributed to strain differences in toxin cell quotas (0.01–3.4 pg cell&lt;sup&gt;−1&lt;/sup&gt;), with toxic strains dominating the populations (70–100%) (Sabart et al. &lt;span&gt;2010&lt;/span&gt;). Comparison of multiple studies shows microcystin cell quota and yield can vary greatly between isolated strains and field samples (Fig. 1).&lt;/p&gt;&lt;p&gt;Cyanobacteria species t","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70117","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147492998","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}

{"title":"Intermediate Western Boundary Current speeds from the southeastern Brazilian margin: A 16,000-year record from grain-size evidence","authors":"Júlia Sambugaro,&nbsp;Michel Michaelovitch de Mahiques,&nbsp;Silvia Helena de Mello e Sousa","doi":"10.1002/lol2.70118","DOIUrl":"10.1002/lol2.70118","url":null,"abstract":"<p>This study presents a high-resolution reconstruction of the Antarctic Intermediate Water (AAIW) transport variability on the southeastern Brazilian continental margin over the last 16,000 years BP, based on grain-size analysis. Variations of sortable silt (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mover>\u0000 <mi>SS</mi>\u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow>\u0000 <annotation>$$ overline{SS} $$</annotation>\u0000 </semantics></math>) are interpreted as changes in flow speed of the Intermediate Western Boundary Current (IWBC), the primary pathway for northward AAIW transport along the western South Atlantic. Enhanced <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mover>\u0000 <mi>SS</mi>\u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow>\u0000 <annotation>$$ overline{SS} $$</annotation>\u0000 </semantics></math> values during the Younger Dryas suggest intensified IWBC flow, while reduced <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mover>\u0000 <mi>SS</mi>\u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow>\u0000 <annotation>$$ overline{SS} $$</annotation>\u0000 </semantics></math> values during the Bølling–Allerød indicate weaker transport. These patterns reflect the sensitivity of AAIW/IWBC dynamics to millennial-scale climate fluctuations, supporting an interhemispheric seesaw mechanism. The integration of sortable silt data with grain-size end-member modeling provides new insights into changes in intermediate-depth circulation in the Southwest Atlantic and their connection to climate reorganizations. This work emphasizes the critical role of AAIW in past ocean–climate interactions and highlights the importance of high-resolution reconstructions.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147447841","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}

{"title":"Summertime methane and carbon dioxide emission rates and associated variables from a national-scale survey of 146 reservoirs in the United States","authors":"J. J. Beaulieu,&nbsp;B. R. Deemer,&nbsp;R. M. Pilla,&nbsp;K. J. Forshay,&nbsp;J. W. Hollister,&nbsp;S. A. Jacobs,&nbsp;J. T. Walker,&nbsp;P. T. Leinenbach,&nbsp;N. A. Griffiths,&nbsp;S. D. Shivers,&nbsp;A. O. Tatters,&nbsp;K. N. Buckler,&nbsp;J. W. Corra,&nbsp;R. W. Daly,&nbsp;A. N. Djurkovic,&nbsp;S. R. Fulgham,&nbsp;P. L. Goodwin,&nbsp;L. G. Herger,&nbsp;M. W. Jones,&nbsp;N. J. Jones,&nbsp;L. A. Juilfs,&nbsp;C. M. Langstroth,&nbsp;M. E. Mitchell,&nbsp;J. R. Oliveira,&nbsp;B. M. Richmond,&nbsp;J. W. Schroeder","doi":"10.1002/lol2.70080","DOIUrl":"10.1002/lol2.70080","url":null,"abstract":"<p>Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here, we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the United States, plus data from two hand-picked sites in Washington and Puerto Rico. At all reservoirs, ebullitive and diffusive emissions and basic physicochemistry were measured at 15–55 locations during one 22 to 64-h period during the summers of 2016–2023, with four reservoirs revisited a second time. Contemporaneous water chemistry measurements were made at one or two locations in each reservoir. The dataset consists of two geospatial files and seven CSV files containing greenhouse gas emissions, water chemistry, morphology, and other relevant data. To date, these data comprise the largest multi-reservoir emissions dataset assembled using consistent measurement methods.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147447845","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}

{"title":"Westerly winds prompted an anomalous southward migration of Pacific saury (Cololabis saira)","authors":"Yulei Zhang,&nbsp;Ruichen Zhu,&nbsp;Jianchao Li,&nbsp;Zhaohui Chen,&nbsp;Hao Tian,&nbsp;Yang Liu,&nbsp;Peng Sun,&nbsp;Zhenjiang Ye,&nbsp;Yongjun Tian","doi":"10.1002/lol2.70114","DOIUrl":"10.1002/lol2.70114","url":null,"abstract":"<p>The Pacific saury (<i>Cololabis saira</i>), a key pelagic fish in the Northwest Pacific, exhibits autumn migration modulated by Kuroshio–Oyashio Extension mesoscale features, yet daily fishing ground variability remains unexplained. Traditional reliance on remote sensing data has limited understanding of the three-dimensional mechanisms governing the fishing patterns. Through integration of continuous mooring observations with satellite data, we reveal how multi-scale oceanic processes drove an anomalous southward shift of Pacific saury in November 2016. Key findings demonstrate that: (1) Anticyclonic eddies enhanced the Oyashio intrusion, shaping the corridor for the southern fishing grounds; (2) Synoptic winds better explained the daily fishing vessel distributions than chlorophyll-<i>a</i>; (3) Westerly winds enhanced Pacific saury's feeding conditions by intensifying cold tongue–eddy interaction through Ekman transport. This study underscores the importance of synoptic-scale winds and continuous subsurface observations in understanding the three-dimensional evolution mechanisms of fishing ground, advocating for expanded mooring establishment for sustainable management.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147447848","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}

{"title":"In situ denitrification rates from a salt marsh after sediment addition","authors":"Nia N. Bartolucci,&nbsp;Robinson W. Fulweiler","doi":"10.1002/lol2.70110","DOIUrl":"https://doi.org/10.1002/lol2.70110","url":null,"abstract":"<p>Salt marshes globally are rapidly being outpaced by sea level rise. One strategy used to boost marsh elevation is thin layer sediment placement (also known as TLP). Yet the impact of TLP on marsh nitrogen cycling largely remains unknown. To address this knowledge gap, we used the push-pull and isotope pairing technique to measure in situ growing season rates of denitrification in experimental TLP and control plots in a temperate salt marsh. We found that median total (ambient + direct) denitrification was ~ 1.5 times greater in the TLP plots compared to the control, though this difference was not statistically significant. Direct denitrification was dominant in the TLP plots. In contrast, coupled nitrification–denitrification accounted for ~ 60% of the denitrification in the control plots. These data suggest that in addition to boosting elevation, sediment addition also preserves important biogeochemical functions such as the capacity for nitrogen removal.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147315624","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}

{"title":"In situ denitrification rates from a salt marsh after sediment addition","authors":"Nia N. Bartolucci,&nbsp;Robinson W. Fulweiler","doi":"10.1002/lol2.70110","DOIUrl":"10.1002/lol2.70110","url":null,"abstract":"<p>Salt marshes globally are rapidly being outpaced by sea level rise. One strategy used to boost marsh elevation is thin layer sediment placement (also known as TLP). Yet the impact of TLP on marsh nitrogen cycling largely remains unknown. To address this knowledge gap, we used the push-pull and isotope pairing technique to measure in situ growing season rates of denitrification in experimental TLP and control plots in a temperate salt marsh. We found that median total (ambient + direct) denitrification was ~ 1.5 times greater in the TLP plots compared to the control, though this difference was not statistically significant. Direct denitrification was dominant in the TLP plots. In contrast, coupled nitrification–denitrification accounted for ~ 60% of the denitrification in the control plots. These data suggest that in addition to boosting elevation, sediment addition also preserves important biogeochemical functions such as the capacity for nitrogen removal.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 2","pages":""},"PeriodicalIF":5.0,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147315621","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}