Limnology and Oceanography Letters最新文献

{"title":"Rapid phosphorus removal promotes a sustained decrease in nitrogen in eutrophic lakes","authors":"Catherine A. Polik,&nbsp;Gaston E. Small,&nbsp;Jacques C. Finlay","doi":"10.1002/lol2.70169","DOIUrl":"10.1002/lol2.70169","url":null,"abstract":"<p>Excess phosphorus (P) leads to lake eutrophication, prompting interventions to reduce P availability. However, we have a limited understanding of how P availability impacts nitrogen (N), which also affects lake water quality. The in-lake application of alum rapidly decreases P availability, presenting an opportunity to explore how P influences N availability and cycling. Analyzing 46 alum treatments, we found that total N (TN) decreased and TN:TP increased after treatment. This result is supported by case studies in other regions. The decrease in TN was positively related to the decrease in TP and the increase in clarity in shallow lakes. Decreased TN persisted despite TP increasing over 8 yr following treatment. Detailed analysis of two lakes indicated that the expansion of submerged macrophytes promoted TN removal from the water column. Our findings reveal important connections between N and P cycling and indicate that controlling P may provide additional benefits through dual-nutrient control.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148836257","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":"Widespread spring discharge drives major water–salt–heat fluxes in salt marshes","authors":"Lucheng Zhan,&nbsp;Quan Zheng,&nbsp;Xiaodong He,&nbsp;Wuliang Chen,&nbsp;Pei Xin","doi":"10.1002/lol2.70170","DOIUrl":"10.1002/lol2.70170","url":null,"abstract":"<p>The occurrence, spatial distribution, and flux significance of submarine groundwater discharge (SGD) through preferential pathways in low-permeability salt marshes remain poorly understood. Using thermal infrared imaging and in situ measurements, we mapped 983 saline springs in winter and 413 in summer across six tidal creeks on the muddy coast of Jiangsu, China. The estimated spring-derived water discharge rate ranged from 0.8 to 6.9 cm d⁻¹ in winter and 0.4 to 3.1 cm d⁻¹ in summer, accompanied by substantial salt and heat fluxes. Spring distributions exhibit strong geomorphic control, with preferred discharge zones at intermediate creek-bed elevations. Spring abundance declined by more than 50% between surveys, suggesting that focused preferential SGD pathways may respond to multiple natural and anthropogenic environmental factors. These results identify spring-type SGD as a widespread, dynamic, yet vulnerable pathway for transferring water, salt, and heat between subsurface aquifers with tidal creek networks.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148768335","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":"Metatranscriptomics analysis of silicon transporters highlights underappreciated contributors to silica cycling in the Baltic Sea","authors":"Yelena Churakova,&nbsp;Daniel Lundin,&nbsp;Evangelia Charalampous,&nbsp;Anabella Aguilera,&nbsp;Benjamin Pontiller,&nbsp;Daniel J. Conley,&nbsp;Jarone Pinhassi,&nbsp;Hanna Farnelid","doi":"10.1002/lol2.70164","DOIUrl":"10.1002/lol2.70164","url":null,"abstract":"<p>The biotic component of the marine silica cycle strongly influences global biogeochemical cycling. Active uptake of dissolved silicic acid (dSi) occurs via silicon transporters (SITs), first characterized in diatoms but widely distributed in eukaryotes. Studying <i>SITs</i> and <i>SIT-like</i> (<i>SIT-L</i>) gene transcripts provides insights into the dynamics and evolutionary history of diverse biosilicifiers. Using a 2-yr metatranscriptomics dataset of Baltic Sea surface microbial communities, we identified <i>SIT/SIT-L</i> genes associated with 11 eukaryotic classes. Although diatoms were previously assumed to drive the Baltic Sea silica cycle, silicoflagellates dominated <i>SIT/SIT-L</i> expression over the sampling period. <i>SIT/SIT-L</i> expression and phylogenetic analyses revealed class-specific patterns, suggesting a complex evolutionary history in dinoflagellates and pronounced clade dynamics in diatoms. Overall, these unexpectedly complex and dynamic shifts in transcriptional investment in silicon transport revealed underappreciated microbial groups driving the Baltic Sea silica cycle.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148717718","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":"Global spatiotemporal variability of chlorophyll a and environmental drivers revealed by empirical orthogonal function analysis","authors":"Won-Jun Choi,&nbsp;Young Min Moon,&nbsp;Tae-Ho Yoon,&nbsp;Minkyoung Kim,&nbsp;Jihoon Ryu,&nbsp;Hwan-Jin Song","doi":"10.1002/lol2.70165","DOIUrl":"10.1002/lol2.70165","url":null,"abstract":"<p>Chlorophyll <i>a</i> (Chl <i>a</i>) is a key indicator of phytoplankton biomass and marine primary productivity, linking ocean ecosystem change to biogeochemical cycling and climate. Understanding the environmental controls on long-term Chl <i>a</i> variability is therefore essential. Here, we examine spatiotemporal variability in surface Chl <i>a</i> across the non-polar global ocean (60°S–60°N) from 1998 to 2022 using Copernicus biogeochemical hindcast and ocean reanalysis datasets. Empirical orthogonal function (EOF) analysis is applied to Chl <i>a</i> and associated physical and biogeochemical variables, including sea surface temperature, surface sensible heat flux, mixed-layer depth, wind speed, and nutrient concentrations. The results reveal strong regional contrasts in Chl <i>a</i> variability across the major ocean basins. Declining regions are associated mainly with enhanced upper-ocean stratification and reduced nutrient resupply, whereas increasing regions are more strongly linked to enhanced nutrient availability. These findings highlight the importance of coupled physical–biogeochemical controls on global phytoplankton variability under climate forcing.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148688036","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":"The Zooplankton International Geospatial dataset: A global repository of spatiotemporal freshwater zooplankton community composition data from lakes and reservoirs to support ecological research","authors":"Stephanie E. Figary,&nbsp;Michael F. Meyer,&nbsp;Rachel M. Pilla,&nbsp;Warren J. S. Currie,&nbsp;Javier Alcocer,&nbsp;María Belén Alfonso,&nbsp;Caitlin M. Andrews,&nbsp;Orlane Anneville,&nbsp;Ana M. Antão-Geraldes,&nbsp;Shelley E. Arnott,&nbsp;Syuhei Ban,&nbsp;Arnab Banerjee,&nbsp;Gábor Bernát,&nbsp;Jessica E. Beyer,&nbsp;Kätlin Blank,&nbsp;Kelly L. Bowen,&nbsp;Christer Brönmark,&nbsp;Rosalie Bruel,&nbsp;Sarah H. Burnet,&nbsp;Tyler J. Butts,&nbsp;Cayelan C. Carey,&nbsp;Rossana Caroni,&nbsp;Moitreyee Chakrabarty,&nbsp;Sudeep Chandra,&nbsp;Kirsten S. Christoffersen,&nbsp;Alicia Cortés,&nbsp;Maria Cristina Crispim,&nbsp;Elvira de Eyto,&nbsp;Luciana De Souza Cardoso,&nbsp;Bridget R. Deemer,&nbsp;Curtis L. DeGasperi,&nbsp;Braden C. DeMattei,&nbsp;Jianming Deng,&nbsp;Jean-Pierre Descy,&nbsp;Inta Dimante-Deimantovica,&nbsp;Nadia Diovisalvi,&nbsp;Renata Dondajewska-Pielka,&nbsp;Jonathan P. Doubek,&nbsp;Tvrtko Dražina,&nbsp;Hilary A. Dugan,&nbsp;Zorka Dulić,&nbsp;Ashley A. Dunker,&nbsp;Gaël Dur,&nbsp;Brie A. Edwards,&nbsp;Jolanta E. Ejsmont-Karabin,&nbsp;Mariam Elmarsafy,&nbsp;Zeynep Ersoy,&nbsp;Rocio Fernandez,&nbsp;Heidrun Feuchtmayr,&nbsp;Maria Soledad Fontanarrosa,&nbsp;Elena Forasacco,&nbsp;László G.-Tóth,&nbsp;Evelyn E. Gaiser,&nbsp;Gideon Gal,&nbsp;Anita Galir,&nbsp;Javier R. Garcia de Souza,&nbsp;Scott F. Girdner,&nbsp;Ryszard Goldyn,&nbsp;K. David Hambright,&nbsp;David P. Hamilton,&nbsp;Lars-Anders Hansson,&nbsp;Susan P. Hendricks,&nbsp;Huihuang Chen,&nbsp;Pascal M. Isumbisho,&nbsp;Stéphan Jacquet,&nbsp;Jun Yang,&nbsp;Martin J. Kainz,&nbsp;Maciej Karpowicz,&nbsp;Samiullah Khan,&nbsp;Katarzyna Kowalczewska-Madura,&nbsp;Natalia Kuczyńska-Kippen,&nbsp;Silke Langenheder,&nbsp;Sarah D. Lawhun,&nbsp;Barbara Leoni,&nbsp;Fabio Lepori,&nbsp;Shuqi Lin,&nbsp;Arni H. Litt,&nbsp;Eleanor B. Mackay,&nbsp;Marina M. Manca,&nbsp;Shin-ichiro S. Matsuzaki,&nbsp;Blake Matthews,&nbsp;Linda May,&nbsp;Yvonne R. McElarney,&nbsp;Christopher J. McLimans,&nbsp;Rosemberg F. Menezes,&nbsp;Ewa Merz,&nbsp;Evangelia Michaloudi,&nbsp;S. Jannicke Moe,&nbsp;Dörthe C. Müller-Navarra,&nbsp;Manuel E. Muñoz-Colmenares,&nbsp;Kayden C. Nasworthy,&nbsp;Veronica Nava,&nbsp;Jens C. Nejstgaard,&nbsp;Ulrike Obertegger,&nbsp;David A. Ortiz,&nbsp;Luis A. Oseguera,&nbsp;Michael J. Paterson,&nbsp;Maria Cintia Piccolo,&nbsp;Lorena Pinheiro-Silva,&nbsp;Roberta Piscia,&nbsp;Francesco Pomati,&nbsp;Serena Rasconi,&nbsp;Brian L. Reid,&nbsp;Leonardo L. Ribeiro,&nbsp;Florencia M. Rojas Molina,&nbsp;Joanna Rosińska,&nbsp;Lars G. Rudstam,&nbsp;James A. Rusak,&nbsp;Olga O. Rusanovskaya,&nbsp;Nico Salmaso,&nbsp;Jouko Sarvala,&nbsp;S. Geoffrey Schladow,&nbsp;Anna G. Schmidt,&nbsp;Anne E. Scofield,&nbsp;Facundo Scordo,&nbsp;Jaromír Sed'a,&nbsp;Katie J. Senft,&nbsp;Kirill Shchapov,&nbsp;Svetlana V. Shimaraeva,&nbsp;Eugene A. Silow,&nbsp;Maria Špoljar,&nbsp;Dietmar Straile,&nbsp;Silva M. Sundberg,&nbsp;Jon N. Sweetman,&nbsp;Celia C. Symons,&nbsp;Andrew J. Tanentzap,&nbsp;Barbara Tartarotti,&nbsp;Stephen J. Thackeray,&nbsp;Jan-Erik Thrane,&nbsp;Maxim A. Timofeyev,&nbsp;Jörg Tittel,&nbsp;Pablo Urrutia-Cordero,&nbsp;Piet Verburg,&nbsp;Danielle Machado Vieira,&nbsp;Heather L. Wander,&nbsp;Shohei Watanabe,&nbsp;James M. Watkins,&nbsp;David S. White,&nbsp;Sabine Wollrab,&nbsp;Vivian Yorojo Moreno,&nbsp;Horacio E. Zagarese,&nbsp;Matiss Zagars,&nbsp;Petr Znachor","doi":"10.1002/lol2.70152","DOIUrl":"10.1002/lol2.70152","url":null,"abstract":"<p>Zooplankton transfer substantial energy in aquatic food webs and are used as indicators of environmental change. Syntheses of zooplankton community dynamics globally require datasets that span a wide range of environmental gradients; however, these datasets are limited due to methodological differences across programs, taxonomic inconsistencies, and a lack of standardized metadata. To reconcile these challenges, we created the Zooplankton International Geospatial (ZIG) dataset, which includes original zooplankton, water physical and chemical variables, and lake morphometric data from 311 inland lakes and reservoirs. ZIG includes waterbodies ranging in size from 0.005 to 82,100 km² and spanning broad latitudinal (−47.26 to 64.90) and longitudinal ranges (−165.04 to 176.53). Temporal coverage for individual waterbodies ranges between 1 and 60 yr with sampling frequency ranging from annually to weekly. With its extensive coverage and content, we consider ZIG to be a cornerstone for future investigations of global scale lake biodiversity change.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675041","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":"Giant phytoplankton revealed by in situ imaging","authors":"Mark D. Ohman,&nbsp;Karine Leblanc,&nbsp;Jeffrey S. Ellen,&nbsp;Sven Gastauer","doi":"10.1002/lol2.70163","DOIUrl":"10.1002/lol2.70163","url":null,"abstract":"<p>Deployment of an autonomous <i>Zooglider</i> in the western Mediterranean Sea revealed the presence of long phytoplankton chains attaining maximum lengths of 6.4–10.4 mm suspended in situ. Elongate chains included the diatoms <i>Guinardia</i>, <i>Proboscia</i>, two other diatom morphologies, and solitary filaments of the cyanobacterium <i>Trichodesmium</i>. Most elongate chains were distributed in the upper 100 m of the water column, overlapping the deep chlorophyll maximum, but some extended to depths of 400 m, suggesting occasional export into deep waters. Such elongate chains appear to be an unutilizable prey resource for most mesozooplankton grazers, including planktonic copepods and appendicularians. Elongate chains are likely to be widely distributed in the ocean, but their detection requires noninvasive measurement methods that do not disrupt the fluid environment or disturb suspended phytoplankton.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675042","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":"Seasonal variation in methane ebullition in a temperate hydropower reservoir impacts annualized estimates","authors":"Anna C. Cardall,&nbsp;Rachel M. Pilla,&nbsp;Natalie A. Griffiths,&nbsp;Gustavious P. Williams,&nbsp;R. Trent Jett,&nbsp;Michael Jones,&nbsp;Nikki J. Jones,&nbsp;Trystan Bordeau","doi":"10.1002/lol2.70161","DOIUrl":"10.1002/lol2.70161","url":null,"abstract":"<p>Estimates of ebullitive methane (CH₄) emissions from reservoirs are highly uncertain, often based on spatial and temporal upscaling from a limited number of sampling sites and periods. While some of these estimates may adjust for seasonal variation in temperature, they rarely account for drawdown and the resulting changes in site depth and the areal extent of the reservoir. In Douglas Reservoir (Tennessee, USA), we conducted monthly sampling of 20 sites over 1 year to capture temporal and spatial variation in CH₄ ebullition. We then compared various approaches for obtaining annualized, whole-reservoir ebullition estimates. CH₄ ebullition fluxes were zero-inflated and highly skewed, with fluxes rising appreciably above zero in July and peaking in autumn. Estimates that did not account for drawdown overestimated annualized rates by 20%, though with high uncertainty. Seasonal variability and hotspots strongly influence annualized ebullition estimates and are important to account for in inventories and global upscaling.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148633801","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":"Riverine nitrate and nitrification cannot be the only sources for nitrate assimilation in the Amazon River Plume margins","authors":"Noémie Choisnard,&nbsp;Ajit Subramaniam,&nbsp;Joseph P. Montoya,&nbsp;Jacqueline Umbricht,&nbsp;Maren Voss","doi":"10.1002/lol2.70157","DOIUrl":"https://doi.org/10.1002/lol2.70157","url":null,"abstract":"<p>The Northern Amazon River Plume plays a crucial role in carbon sequestration and nitrogen cycling. This study quantified NO₃⁻ budgets along the plume during a period of high discharge, revealing NO₃⁻ uptake rates in excess of inputs from riverine sources and nitrification beyond 5°N. NO₃⁻ availability decreased from ~ 60 mmol m⁻² near the river mouth to &lt; 10 mmol m⁻² in the northern plume, while nitrification rates dropped sharply. Since salinity gradients prevent diffusive NO₃⁻ inputs to the plume, this drop creates a NO₃⁻ deficit (23.6–50.3 × 10⁸ mol d⁻¹). NO₃⁻ uptake in the northern plume must rely on additional NO₃⁻ sources, for example, N₂ fixation, which produces organic N and ammonium. However, the lack of increased nitrification from NH₄⁺ suggests unexplored pathways or dynamics. These results are crucial for our understanding and as a baseline of the Amazon River as a NO₃⁻-source supporting primary production in the northern plume.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70157","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148617126","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":"How localized physical processes influence large-scale phytoplankton blooms near the sea ice edge in the Greenland Sea","authors":"Abigail P. Heiser,&nbsp;Till J. W. Wagner,&nbsp;Manfredi Manizza,&nbsp;Dustin Carroll,&nbsp;Conner W. Lester,&nbsp;Dimitris Menemenlis","doi":"10.1002/lol2.70162","DOIUrl":"https://doi.org/10.1002/lol2.70162","url":null,"abstract":"<p>The Arctic Ocean has experienced intensifying phytoplankton spring blooms near the sea ice edge. Here, we investigate the drivers of such near-ice blooms in the Greenland Sea by comparing satellite and in situ observations with the ECCO-Darwin physical–biogeochemical state estimate. Satellite data reveal pronounced spring blooms within ~ 200 km of the ice, a signal that is not reproduced in ECCO-Darwin. Observations further reveal that primary production is tightly linked to submesoscale meltwater eddies shed from the ice edge, which are not currently resolved by ECCO-Darwin. We argue that the relatively coarse spatial resolution, together with biases in sea ice concentration and sea surface salinity lead to the underestimation of near-ice blooms in ECCO-Darwin. These results highlight (1) a critical role for fine-scale processes in driving Arctic Ocean primary production and (2) the need for improved freshwater forcing, stratification, and small-scale circulation in Arctic Ocean state estimates.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148617127","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":"From temporal variability to integrated metabolic balance: Interpreting total alkalinity and dissolved inorganic carbon relationships in dynamic coral reef ecosystems","authors":"Tyler Cyronak,&nbsp;Yuichiro Takeshita,&nbsp;Rebecca Albright,&nbsp;Ken Caldeira,&nbsp;Bradley Eyre,&nbsp;Alyssa Griffin,&nbsp;David A. Koweek,&nbsp;Jennifer Mallon,&nbsp;Manoela Romano de Orte,&nbsp;Kai G. Schulz,&nbsp;Kennedy Wolfe","doi":"10.1002/lol2.70155","DOIUrl":"https://doi.org/10.1002/lol2.70155","url":null,"abstract":"<p>Linear regressions between total alkalinity (TA) and dissolved inorganic carbon (DIC) are widely used to infer the balance between net ecosystem calcification (NEC) and net ecosystem production (NEP) in coral reefs. Using high-frequency carbonate chemistry observations from an Australian reef flat and simple numerical models, we show that TA–DIC slopes primarily reflect the temporal co-variability of NEC and NEP, rather than their time-integrated metabolic balance. To recover time-integrated metabolic information, diel reef measurements must be coupled with offshore reference conditions, which anchor changes in TA and DIC to NEC : NEP ratios. We further demonstrate that metabolic balance shifts systematically over the diel cycle and depends on light, indicating that it is inherently dynamic rather than static. Together, our results highlight the need to distinguish metabolic co-variability from metabolic ratios when interpreting carbonate chemistry data in coral reef and other dynamic aquatic ecosystems.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"11 5","pages":""},"PeriodicalIF":7.3,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.70155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148617220","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}