Limnology and Oceanography Letters湖沼学与海洋学快报
Limnology and Oceanography Letters(英文缩写 LIMNOL OCEANOGR LETT),ISSN 2378-2242,eISSN 2378-2242,中文译名:湖沼学与海洋学快报 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-09-27 至 2026-09-27，按本站收录文献的发表日期统计。
期刊介绍
Limnology and Oceanography Letters 最新收录文献
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1. Seasonal differences and potential biological drivers of the methane paradox in two peri-Alpine lakes.
PMID:日期:2026-05-01Seasonal variations and the biological drivers underlying the methane paradox in freshwater lakes are poorly understood. Here, we investigated the relationship between subsurface methane inventories and phytoplankton in two peri-Alpine lakes across different seasons. Surface waters of both lakes were consistently saturated in methane, with maxima reaching 570 and 205 nmol L during summer in the metalimnion of lakes Mondsee and Attersee, respectively. Methane concentrations were positively correlated with phytoplankton abundance in meso-oligotrophic lake Mondsee but not in ultra-oligotrophic lake Attersee. However, although phytoplankton peaked in abundance at the methane maxima in Mondsee, incubation experiments with C-labeled bicarbonate revealed negligible methane production from primary productivity. Instead, our results suggest that phytoplankton might only be indirectly involved in methane production through alternative pathways, or by providing precursor compounds to other members of the microbial community in these oligotrophic lakes.
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2. Summertime methane and carbon dioxide emission rates and associated variables from a national-scale survey of 146 reservoirs in the United States.
PMID:日期:2026-03-01Reservoirs 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.
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3. A global dataset of nitrogen fixation rates across inland and coastal waters.
PMID:日期:2025-06-01Biological nitrogen fixation is the conversion of dinitrogen (N) gas into bioavailable nitrogen by microorganisms with consequences for primary production, ecosystem function, and global climate. Here we present a compiled dataset of 4793 nitrogen fixation (N-fixation) rates measured in the water column and benthos of inland and coastal systems via the acetylene reduction assay, N labeling, or N/Ar technique. While the data are distributed across seven continents, most observations (88%) are from the northern hemisphere. N labeling accounted for 67% of water column measurements, while the acetylene reduction assay accounted for 81% of benthic N-fixation observations. Dataset median area-, volume-, and mass-normalized N-fixation rates are 7.1 mol N-N m h, 2.3 × 10 mol N-N L h, and 4.8 × 10 mol N-N g h, respectively. This dataset will facilitate future efforts to study and scale N-fixation contributions across inland and coastal aquatic environments.
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4. Tracking a large-scale and highly toxic Arctic algal bloom: rapid detection and risk communication.
PMID:日期:2025-02-01In recent years, blooms of the neurotoxic dinoflagellate have been documented in Pacific Arctic waters, and the paralytic shellfish toxins (PSTs) that this species produces have been detected throughout the food web. These observations have raised significant concerns about the role that harmful algal blooms (HABs) will play in a rapidly changing Arctic. During a research cruise in summer 2022, a massive bloom of was detected in real time as it was advected through the Bering Strait region. The bloom was exceptional in both spatial scale and density, extending >600 km latitudinally, reaching concentrations >174,000 cells L, and producing high-potency PST congeners. Throughout the event, coastal stakeholders in the region were engaged and a multi-faceted community response was mobilized. This unprecedented bloom highlighted the urgent need for response capabilities to ensure safe utilization of critical marine resources in a region that has little experience with HABs.
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5. Five state factors control progressive stages of freshwater salinization syndrome.
PMID:日期:2023-02-01Factors driving freshwater salinization syndrome (FSS) influence the severity of impacts and chances for recovery. We hypothesize that spread of FSS across ecosystems is a function of interactions among five state factors: , and . (1) drive pulsed or chronic inputs of salt ions and mobilization of chemical contaminants. (2) drives rates of erosion, weathering, ion exchange, and acidification-alkalinization. (3) drive salinization and contaminant mobilization along hydrologic cycles. (4) drives rising water temperatures, salt stress, and evaporative concentration of ions and saltwater intrusion. (5) influences consequences, thresholds, and potentials for ecosystem recovery. We hypothesize that state factors advance FSS in distinct stages, which eventually contribute to failures in systems-level functions (supporting drinking water, crops, biodiversity, infrastructure, etc.). We present future research directions for protecting freshwaters at risk based on five state factors and stages from diagnosis to prognosis to cure.
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6. The effects of salinity and N:P on N-rich toxins by both an N-fixing and non-N-fixing cyanobacteria.
PMID:日期:2023-02-01Freshwater ecosystems are experiencing increased salinization. Adaptive management of harmful algal blooms (HABs) contribute to eutrophication/salinization interactions through the hydrologic transport of blooms to coastal environments. We examined how nutrients and salinity interact to affect growth, elemental composition, and cyanotoxin production/release in two common HAB genera. (non-nitrogen (N)-fixer and microcystin-LR producer; MC-LR) and (N-fixer and cylindrospermopsin producer; CYN) were grown in N:phosphorus (N:P) 4 and 50 (by atom) for 21 and 33 days, respectively, then dosed with a salinity gradient (0 - 10.5 g L). Both total MC-LR and CYN were correlated with particulate N. We found MC-LR production and release was affected by salinity only in the N:P 50 treatment. However, CYN production and release was affected by salinity regardless of N availability. Our results highlight how cyanotoxin production and release across the freshwater - marine continuum are controlled by eco-physiological differences between N-acquisition traits.
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7. Nitrogen fixation: a poorly understood process along the freshwater-marine continuum.
PMID:日期:2022-02-01Although N fixation is a major component of the global N cycle and has been extensively studied in open-ocean and terrestrial ecosystems, rates and ecological dynamics remain virtually unknown for the inland and coastal aquatic ecosystems (lakes, wetlands, rivers, streams, estuaries) that connect terrestrial and marine biomes. This is due to the diversity of these habitats, as well as the traditional paradigm that N fixation rates were low to nonexistent, and therefore not important, in these ecosystems. We identify three major research themes to advance understanding of aquatic N fixation: 1) the biological diversity of diazotrophs and variability of N fixation rates, 2) the ecological stoichiometry of N fixation, and 3) the upscaling of N fixation rates from genes to ecosystems. Coordinating research across these areas will advance limnology and oceanography by fully integrating N fixation into ecological dynamics of aquatic ecosystems from local to global scales.
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8. Greenhouse gas emissions from lakes and impoundments: upscaling in the face of global change.
PMID:日期:2019-03-26Lakes and impoundments are important sources of greenhouse gases (GHG: i.e., CO, CH, NO), yet global emission estimates are based on regionally-biased averages and elementary upscaling. We assembled the largest global dataset to date on emission rates of all three GHGs and found they covary with lake size and trophic state. Fitted models were upscaled to estimate global emission using global lake size inventories and a remotely-sensed global lake productivity distribution. Traditional upscaling approaches overestimated CO and NO emission but underestimated CH by half. Our upscaled size-productivity weighted estimates (1.25-2.30 Pg of CO-equivalents annually) are nearly 20% of global CO fossil fuel emission with ~75% of the climate impact due to CH. Moderate global increases in eutrophication could translate to 5-40% increases in the GHG effects in the atmosphere, adding the equivalent effect of another 13% of fossil fuel combustion or an effect equal to GHG emissions from current land use change.
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9. Evidence for regional aeolian transport of freshwater micrometazoans in arid regions.
PMID:日期:2018-08-01While separated by large expanses of dry terrain unsuitable for aquatic biota, aridland waters possess high biodiversity. How aquatic micrometazoans disperse to, and colonize, these isolated ephemeral habitats are not well understood. We used a multi-faceted approach including wind tunnel and rehydration experiments, and next-generation sequencing to assess potential movement of diapausing propagules of aquatic invertebrates by anemochory across regional scales (10-10 km). Wind tunnel experiments using dry playa sediments with added micrometazoan propagules demonstrated that after entrainment by saltation and downwind transport were subsequently recoverable as viable animals when rehydrated. Further, rehydration of fallen natural dust yielded micrometazoans, including rotifers, gastrotrichs, microcrustaceans, and nematodes. Using conserved DNA primers, we identified >3,300 eukaryotic Operational Taxonomic Units (excluding fungi) in the dust including some taxa found in rehydration experiments. Thus, we provide strong evidence that anemochory can disperse micrometazoans among isolated, ephemeral ecosystems in North American deserts and likely elsewhere.
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10. Dynamic processing of DOM: Insight from Exometabolomics, Fluorescence Spectroscopy, and Mass Spectrometry.
PMID:日期:2018-06-01Dissolved organic matter (DOM) in freshwater environments is an important source of organic carbon, supporting bacterial respiration. Frozen environments cover vast expanses of our planet, with glaciers and ice-sheets storing upwards of six petagrams of organic carbon. It is generally believed that DOM liberated from ice stimulates downstream environments. If true, glacial DOM is an important component of global carbon cycling. However, coupling the release of DOM to microbial activity is challenging due to the molecular complexity of DOM and the metabolic connectivity within microbial communities. Using a single environmentally relevant organism, we demonstrate that processing of compositionally diverse DOM occurs, but, even though glacially derived DOM is chemically labile, it is unable to support sustained respiration. In view of projected changes in glacier DOM export, these findings imply that biogeochemical impacts on downstream environments will depend on the reactivity and heterogeneity of liberated DOM, as well as the timescale.