Limnology and Oceanography最新文献

{"title":"Issue Information & Members form","authors":"","doi":"10.1002/lno.70147","DOIUrl":"10.1002/lno.70147","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 S1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70147","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Issue Information & Copyright","authors":"","doi":"10.1002/lno.70149","DOIUrl":"10.1002/lno.70149","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 S1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 essential role of large research vessels in marine ecosystem observations and ocean sustainability","authors":"Erin V. Satterthwaite,&nbsp;John C. Field,&nbsp;Andrea J. Fassbender,&nbsp;Gerardo Aceves-Medina,&nbsp;Steven J. Bograd,&nbsp;Elliott L. Hazen,&nbsp;Nastassia V. Patin,&nbsp;Zachary Gold,&nbsp;Katherine A. Barbeau,&nbsp;Danie Kinkade,&nbsp;Adam Shepherd,&nbsp;Rasmus Swalethorp,&nbsp;Andrew R. Thompson,&nbsp;Henry A. Ruhl,&nbsp;Brice Semmens","doi":"10.1002/lno.70110","DOIUrl":"10.1002/lno.70110","url":null,"abstract":"<p>Our understanding of marine ecosystems and ability to manage them sustainably has come from multidisciplinary observations made repeatedly over long periods of time. These long-term ecosystem observations depend on the capabilities of large research vessels, which play an essential role in the collection of global ocean observations. Research vessels serve as large, stable platforms for collecting high volume samples from the surface to the seafloor that provide uniquely valuable in situ marine ecosystem information. Additionally, they serve as mobile laboratories enabling the collection, preservation, processing, and analysis of unique samples and data, such as chemical, biogeochemical, and biological parameters. Given their capacity for, and repeated use in, collecting comprehensive marine ecosystem observations—across geology, physics, chemistry, and biology—large research vessels provide insight into long-term regional ecosystem dynamics. They also act as platforms-of-opportunity for testing, refining, and comparing technologies, enabling innovation and the evolution of the observing system. High-quality observations from large research vessels serve as the backbone for many other components of the global ocean observing system through their use in calibrating autonomous sensors and predictive modeling. Moreover, large research vessels function as mobile, experiential training and exploration platforms that facilitate discovery, education, and collaboration. An effective, modular marine ecosystem observing system will depend on large research vessels to sustain and augment existing observing programs and to deploy, service, and validate the growing array of autonomous platforms that contribute to it. Achieving this vision will likely require maintaining and upgrading ship-based infrastructure and personnel, integrating emerging technologies, leveraging the unique capabilities of large research vessels in conjunction with other platforms, strengthening collaborative partnerships, and building social capital for marine ecosystem observations through training, knowledge sharing, and effective governance.</p>","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 9","pages":"2767-2792"},"PeriodicalIF":3.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144766094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Issue Information & Masthead","authors":"","doi":"10.1002/lno.70146","DOIUrl":"10.1002/lno.70146","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 S1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Aquatic ectotherms under global warming: The hidden role of anaerobic processes in metabolic response","authors":"Marine Escura,&nbsp;Thomas Ruiz,&nbsp;Alexandre Bec,&nbsp;Christian Desvilettes,&nbsp;Apostolos-Manuel Koussoroplis","doi":"10.1002/lno.70160","DOIUrl":"10.1002/lno.70160","url":null,"abstract":"<p>In a warming world, acclimation of metabolic rate in aquatic ectotherms has been pointed out as a critical process to offset the temperature-induced increase of energy requirements and the associated higher oxygen demand. However, this paradigm is drawn from measurements of aerobic energy production as a proxy for metabolic rate, thus overlooking the contribution of anaerobic energy production. Here, we combined individual-based respirometric and calorimetric measurements to assess the metabolic rate of the ubiquitous ectotherm <i>Gammarus pulex</i>, a key detritivore species severely impacted by warming of freshwater streams. We assess aerobic and total metabolism after a shift from an optimal temperature (12°C) up to a suboptimal temperature (22°C). We showed that exposure to warming decreases aerobic metabolic rate while total metabolic rate remains constant and is associated with higher lactate body content. Our finding suggests that the reduction of oxygen consumption reflects a shift to anaerobic processes rather than an overall metabolic decrease often referred to as metabolic compensation. Our results urge a critical assessment of anaerobic contribution to the thermal response of ectotherms at the level of populations and communities to enhance prediction of the response of aquatic populations under global change.</p>","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 9","pages":"2582-2590"},"PeriodicalIF":3.7,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144715473","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}

{"title":"A low oxygen threshold for physiological responses and trace metal quotas of Prochlorococcus and Synechococcus","authors":"Joan De Vera,&nbsp;Yuanyuan Feng,&nbsp;Feixue Fu,&nbsp;Shun-Chung Yang,&nbsp;Amjad Mansour,&nbsp;Nicholas J. Hawco,&nbsp;David A. Hutchins,&nbsp;Seth G. John","doi":"10.1002/lno.70123","DOIUrl":"10.1002/lno.70123","url":null,"abstract":"<p>Continued human activity is expected to accelerate ocean deoxygenation, leading to the expansion and shallowing of oxygen-deficient zones (ODZs). This decline in oxygen may impact both phytoplankton growth and trace metal uptake. We conducted culture experiments with <i>Prochlorococcus</i> MIT9313 and <i>Synechococcus</i> XM-24, two numerically dominant genera of marine picocyanobacteria, under varying O₂ levels (36–242 <i>μ</i>M). These experiments provide some of the first data on trace metal quotas in phytoplankton under varying O₂ conditions in culture. Moderate deoxygenation, above hypoxic levels, did not negatively impact the growth and trace metal quotas of either <i>Prochlorococcus</i> MIT9313 or <i>Synechococcus</i> XM-24 (80 and 85 <i>μ</i>M O₂, respectively). Indeed, some parameters (e.g., growth rate, carbon fixation and chlorophyll fluorescence) suggest slight growth enhancement at these moderate levels of deoxygenation. However, hypoxic conditions (36 <i>μ</i>M O₂) significantly inhibited the growth of <i>Prochlorococcus</i> MIT9313, suggesting a minimum O₂ threshold needed to prevent disruptions in O₂-dependent processes. <i>Synechococcus</i> XM-24 exhibited no significant response to elevated <i>p</i>CO₂ (1054 <i>μ</i>atm), indicating possible adaptation to variable coastal CO₂ environments. Changes in trace-metal quotas (metal-to-phosphorous ratios; metal/P) were also observed when <i>Prochlorococcus</i> MIT9313 was cultured under hypoxia, including up to 48% increases in Fe/P, 48% decreases in Ni/P, and 27% decreases in Co/P, compared to oxic conditions. These results contrast with elevated metal/P ratios in autotrophic-associated particles from ODZs, suggesting either distinct metal uptake strategies by phytoplankton in low-O₂ regions or that elevated particulate metals are influenced by other plankton types such as heterotrophs.</p>","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 9","pages":"2569-2581"},"PeriodicalIF":3.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70123","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Ice thickness regulates heat flux in permanently ice-covered lakes","authors":"Hilary A. Dugan,&nbsp;Maciej K. Obryk,&nbsp;Michael N. Gooseff,&nbsp;Peter T. Doran,&nbsp;Amy L. Chiuchiolo,&nbsp;Jade P. Lawrence,&nbsp;John C. Priscu","doi":"10.1002/lno.70151","DOIUrl":"10.1002/lno.70151","url":null,"abstract":"<p>The permanently ice-covered lakes of Taylor Valley, Antarctica, are rare ecosystems where permanent ice cover and year-round vertically stable water columns provide critical redox zones for cold-adapted microorganisms. Using 30 yr of limnological data from the McMurdo Dry Valleys Long-Term Ecological Research program, we assessed the water column heat flux of four permanently ice-covered lakes in the context of global lake ice decline and lake warming. Our study reveals that heat flux in Taylor Valley lakes is driven by ice cover dynamics, both annual changes in ice thickness as well as overall ice thickness. During periods of ice thinning, like those observed from 2020 to 2023, the lakes accumulate heat. Lake Fryxell, Lake Hoare, and West Lake Bonney have repeatedly cooled and warmed over our record, with only East Lake Bonney cooling due to lake level rise. Ice thickness is largely synchronous among the four lakes, with periods of asynchronicity likely caused by lake-specific changes in surface albedo driven by changes in optical properties of the ice covers and in-ice sediment dynamics.</p>","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 9","pages":"2556-2568"},"PeriodicalIF":3.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aslopubs.onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Issue Information & Members form","authors":"","doi":"10.1002/lno.70143","DOIUrl":"10.1002/lno.70143","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 7","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70143","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Issue Information & Masthead","authors":"","doi":"10.1002/lno.70142","DOIUrl":"10.1002/lno.70142","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 7","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Issue Information & Copyright","authors":"","doi":"10.1002/lno.70145","DOIUrl":"10.1002/lno.70145","url":null,"abstract":"","PeriodicalId":18143,"journal":{"name":"Limnology and Oceanography","volume":"70 7","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lno.70145","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}