Limnology and Oceanography Letters最新文献

{"title":"Measurements of the inherent optical properties of aqueous suspensions of microplastics","authors":"Daniel Koestner,&nbsp;Robert Foster,&nbsp;Ahmed El-Habashi,&nbsp;Shea Cheatham","doi":"10.1002/lol2.10387","DOIUrl":"10.1002/lol2.10387","url":null,"abstract":"<p>Libraries of inherent optical properties (IOPs) of microplastics are sparse, yet they are essential for the development of optical techniques to detect and quantify microplastics in the ocean. In this study, we describe our results and technique for the measurement of the IOPs of microplastic suspensions generated from commonly utilized plastics. The measurements included angle-resolved polarized light scattering, and spectral absorption and beam attenuation coefficients. We also performed ancillary characterization of particle properties, including size distribution, shape, and mass concentration of suspended matter. We observed several unique optical characteristics regarding absorption, scattering, and polarization properties compared with typical marine particle assemblages. We show that these results are useful for radiative transfer simulations as well as the potential development of novel plastic detection techniques from above- or in-water optical measurements.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 4","pages":"487-497"},"PeriodicalIF":5.1,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10387","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140209760","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":"Plant-sediment interactions decouple inorganic from organic carbon stock development in salt marsh soils","authors":"Dirk Granse,&nbsp;Antonia Wanner,&nbsp;Martin Stock,&nbsp;Kai Jensen,&nbsp;Peter Mueller","doi":"10.1002/lol2.10382","DOIUrl":"10.1002/lol2.10382","url":null,"abstract":"<p>The storage of organic carbon in the soils of salt marshes and other coastal blue carbon ecosystems has gained considerable attention by the scientific community for more than a decade now, while the relevance and mechanisms of soil inorganic carbon accumulation remain poorly understood. Using long-term annual accretion monitoring over 17 years in <i>N</i> = 50 permanent plots distributed across a 1050-ha salt-marsh complex of the European Wadden Sea, we identified clear relationships between salt-marsh vertical growth rates and the soil densities of inorganic and organic carbon. Specifically, we demonstrate a strong positive correlation between vertical accretion and inorganic carbon density while observing a strong negative correlation between vertical accretion and organic carbon density. This decoupling observed between inorganic and organic soil carbon stocks was governed by plant community composition and associated plant traits, which controlled sedimentation processes.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 4","pages":"469-477"},"PeriodicalIF":5.1,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140069773","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":"Particulate organic carbon sedimentation triggers lagged methane emissions in a eutrophic reservoir","authors":"Andrés Martínez-García,&nbsp;Ignacio Peralta-Maraver,&nbsp;Eva Rodríguez-Velasco,&nbsp;Gema L. Batanero,&nbsp;Miriam García-Alguacil,&nbsp;Félix Picazo,&nbsp;Juan Calvo,&nbsp;Rafael Morales-Baquero,&nbsp;Francisco J. Rueda,&nbsp;Isabel Reche","doi":"10.1002/lol2.10379","DOIUrl":"10.1002/lol2.10379","url":null,"abstract":"<p>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.</p>","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}

{"title":"Dissolved organic matter offsets the detrimental effects of climate change in the nitrogen-fixing cyanobacterium Crocosphaera","authors":"Alba Filella,&nbsp;Jacqueline Umbricht,&nbsp;Angelina Klett,&nbsp;Angela Vogts,&nbsp;Thomas Vannier,&nbsp;Olivier Grosso,&nbsp;Maren Voss,&nbsp;Lasse Riemann,&nbsp;Mar Benavides","doi":"10.1002/lol2.10380","DOIUrl":"10.1002/lol2.10380","url":null,"abstract":"<p>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 <i>Crocosphaera</i> 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 <i>Crocosphaera</i> with a key ecological advantage, possibly dictating diazotroph-derived nitrogen inputs in the future ocean.</p>","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}

{"title":"Lagging spawning and increasing phenological extremes jeopardize walleye (Sander vitreus) in north-temperate lakes","authors":"Martha E. Barta,&nbsp;Greg G. Sass,&nbsp;Jeffrey R. Reed,&nbsp;Thomas A. Cichosz,&nbsp;Aaron D. Shultz,&nbsp;Mark Luehring,&nbsp;Zachary S. Feiner","doi":"10.1002/lol2.10383","DOIUrl":"10.1002/lol2.10383","url":null,"abstract":"<p>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 (<i>Sander vitreus</i>) 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.</p>","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}

{"title":"Sea-ice loss accelerates carbon cycling and enhances seasonal extremes of acidification in the Arctic Chukchi Sea","authors":"Yixing Zhang,&nbsp;Yingxu Wu,&nbsp;Wei-Jun Cai,&nbsp;Xiangqi Yi,&nbsp;Xiang Gao,&nbsp;Haibo Bi,&nbsp;Yanpei Zhuang,&nbsp;Liqi Chen,&nbsp;Di Qi","doi":"10.1002/lol2.10378","DOIUrl":"10.1002/lol2.10378","url":null,"abstract":"<p>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.</p>","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}

{"title":"Biotic and thermal drivers alter zooplankton phenology in western Lake Erie","authors":"Jenna Bailey,&nbsp;James M. Hood","doi":"10.1002/lol2.10377","DOIUrl":"10.1002/lol2.10377","url":null,"abstract":"<p>Environmental change, particularly warming and eutrophication, can alter phenology in aquatic systems. Understanding controls on zooplankton phenology is important due to their central role in food webs. While patterns in zooplankton phenology have been well documented, we lack an understanding of how abiotic and biotic drivers influence lake zooplankton phenology during the summer. We examined the phenology of four common zooplankton taxa (<i>Daphnia retrocurva</i>, <i>Skistodiaptomus oregonensis</i>, <i>Mesocyclops</i> spp., Dreissenid veligers) in western Lake Erie during 1995–2022, a period with increasing eutrophication and <i>Bythotrephes longimanus</i> biomass. Many phenology metrics varied by 3 weeks or more from 1995 to 2022. The dominant controls of phenology were temperature and biotic factors, especially grazer-defended phytoplankton (cyanobacteria and other colonial or filamentous taxa) and the invasive predator <i>B. longimanus</i>, which frequently interacted. Our results show that aspects of environmental change interact to shape zooplankton phenology, which can influence phytoplankton biomass and energy flow to higher trophic levels.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"219-228"},"PeriodicalIF":7.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661150","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":"Enhanced stream greenhouse gas emissions at night and during flood events","authors":"Rebecca L. Woodrow,&nbsp;Shane A. White,&nbsp;Stephen R. Conrad,&nbsp;Praktan D. Wadnerkar,&nbsp;Gerard Rocher-Ros,&nbsp;Christian J. Sanders,&nbsp;Ceylena J. Holloway,&nbsp;Isaac R. Santos","doi":"10.1002/lol2.10374","DOIUrl":"10.1002/lol2.10374","url":null,"abstract":"<p>Headwater streams play a large role in aquatic greenhouse gas emissions. Carbon dioxide (CO₂) and dissolved oxygen in streams often undergo changes through diel cycles. However, methane (CH₄) and nitrous oxide (N₂O) have unknown diel dynamics. Here, we reveal consistent patterns in CO₂, CH₄, and N₂O over diel cycles and during flood events using high-frequency continuous observations in a subtropical headwater stream. Diel cycles were most pronounced during baseflow. Increased nighttime discharge due to higher groundwater inputs enhanced gas transfer velocities and concentrations. Overall nocturnal emissions were 31%, 68%, and 32% greater than daytime for CO₂, CH₄, and N₂O, respectively. Floods dampened diel signals. If both flood events and diel patterns are neglected, estimates of greenhouse gas emissions from headwaters may be greatly underestimated. Overall, CH₄ and N₂O emissions from headwater streams may be underestimated by ~ 20–40% due to a lack of observations during nighttime, floods, and in warmer climates.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"276-285"},"PeriodicalIF":7.8,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10374","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139574168","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":"Mesocosm experiments validate induction of Daphnia vertical migration by the fish-derived kairomone 5α-cyprinol sulfate","authors":"Johanna Ahlers,&nbsp;Meike Hahn,&nbsp;Maria Stockenreiter,&nbsp;Herwig Stibor,&nbsp;Eric von Elert","doi":"10.1002/lol2.10375","DOIUrl":"10.1002/lol2.10375","url":null,"abstract":"<p>The fish-derived bile salt 5α-cyprinol sulfate (CPS) has been identified as a kairomone inducing the predator avoidance behavior “diel vertical migration” (DVM) in <i>Daphnia magna</i> in response to fish. However, conclusions about the ecological significance of CPS have been derived from laboratory experiments only. Using a mesocosm approach, we investigate whether the role of CPS as a kairomone can be confirmed in the field. We demonstrate that CPS induces downward migration during daytime in a field-derived <i>Daphnia</i> community mainly consisting of <i>Daphnia longispina</i> and <i>Daphnia cucullata</i> within the experiment. In the study lake, the actual population of <i>D. longispina</i> shows a similar pattern of DVM, while concomitant quantification of CPS by HPLC-MS confirms that CPS in situ concentrations are sufficiently high for induction of daytime downward migration of <i>D. longispina</i> in this oligo-mesotrophic lake. Together, these observations infer that CPS is a significant kairomone-inducing DVM-like behavior in <i>Daphnia</i>.</p>","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 3","pages":"307-315"},"PeriodicalIF":7.8,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139568052","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 to write lay summaries of research articles for wider accessibility","authors":"Laura J. Falkenberg,&nbsp;Patrick W. S. Joyce,&nbsp;Patricia A. Soranno","doi":"10.1002/lol2.10373","DOIUrl":"10.1002/lol2.10373","url":null,"abstract":"&lt;p&gt;Journal articles are the key means for communicating scientific research. In the last century, science has become increasingly specialized such that journals commonly target researchers from ever narrower sub-disciplines. However, even in specialist journals, the research published can be relevant to scientists from other disciplines and to nonscientists including policymakers, managers, educators, and the general public (Knight &lt;span&gt;2003&lt;/span&gt;). Unfortunately, such broad audiences do not always find traditional articles easily accessible because they are written using an academic style that includes low readability of text and confusing jargon (Falkenberg and Tubb &lt;span&gt;2017&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;An approach to enhance the accessibility of articles by broader audiences is the inclusion of “lay summaries” (hereafter referred to as summaries) alongside traditional abstracts. Summaries typically describe the issue studied in the paper, the research gap that was addressed, the key conclusion that addresses this gap written in general terms, and highlights the significance of the work with the goal of facilitating communication of the most important contribution of each manuscript across disciplines (e.g., &lt;i&gt;L&amp;O Letters&lt;/i&gt; https://aslopubs.onlinelibrary.wiley.com/hub/journal/23782242/about/author-guidelines, last accessed 20 December 2023; American Geophysical Union https://www.agu.org/publish-with-agu/publish/author-resources/plain-language-summary, last accessed 20 December 2023). While not replacing traditional abstracts, summaries are where authors are expected to communicate their research in less-technical ways that would appeal to new audiences (Breeze &lt;span&gt;2016&lt;/span&gt;). Indeed, nontechnical summaries have been advocated to increase the visibility, impact, and transparency of scientific research, particularly to nonscientific audiences (https://scientific-publishing.webshop.elsevier.com/publication-recognition/lay-summary-promote-work-outside-academia/#:~:text=Another%20reason%20to%20write%20a,academic%20background%20understand%20your%20work, last accessed 20 December 2023; Kuehne and Olden &lt;span&gt;2015&lt;/span&gt;). However, despite the goal of summaries, we know little about their accessibility to the target audiences, which can be defined by their readability and jargon content (Sharon and Baram-Tsabari &lt;span&gt;2014&lt;/span&gt;). Therefore, using this definition, we explore whether summaries are more accessible than abstracts, identify the guidance that journal publishers give to authors for writing summaries, and provide recommendations to authors, publishers, and editors to support the writing of article summaries with improved accessibility.&lt;/p&gt;&lt;p&gt;Despite the goal of summaries, we know little about their accessibility, which can be defined by the combination of their readability and jargon content (Sharon and Baram-Tsabari &lt;span&gt;2014&lt;/span&gt;). We define readability as “able to be read easily,” and jargon as the “technical terminology or characteri","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"9 2","pages":"93-98"},"PeriodicalIF":7.8,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139489905","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}