Limnology and Oceanography Letters最新文献_第3页

Seasonal patterns of microbial diversity across the world oceans 全球海洋微生物多样性的季节模式

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-17 DOI: 10.1002/lol2.10422

Eric J. Raes, Shannon Myles, Liam MacNeil, Matthias Wietz, Christina Bienhold, Karen Tait, Paul J. Somerfield, Andrew Bissett, Jodie van de Kamp, Josep M. Gasol, Ramon Massana, Yi-Chun Yeh, Jed A. Fuhrman, Julie LaRoche

{"title":"Seasonal patterns of microbial diversity across the world oceans","authors":"Eric J. Raes, Shannon Myles, Liam MacNeil, Matthias Wietz, Christina Bienhold, Karen Tait, Paul J. Somerfield, Andrew Bissett, Jodie van de Kamp, Josep M. Gasol, Ramon Massana, Yi-Chun Yeh, Jed A. Fuhrman, Julie LaRoche","doi":"10.1002/lol2.10422","DOIUrl":"10.1002/lol2.10422","url":null,"abstract":"Understanding the patterns of marine microbial diversity (Bacteria + Archaea) is essential, as variations in their alpha- and beta-diversities can affect ecological processes. Investigations of microbial diversity from global oceanographic expeditions and basin-wide transects show positive correlations between microbial diversity and either temperature or productivity, but these studies rarely captured seasonality, especially in polar regions. Here, using multiannual alpha-diversity data from eight time series in the northern and southern hemispheres, we show that marine microbial community richness and evenness generally correlate more strongly with daylength than with temperature or chlorophyll a (a proxy for photosynthetic biomass). This pattern is observable across time series found in the northern and southern hemispheres regardless of collection method, DNA extraction protocols, targeted 16S rRNA hypervariable region, sequencing technology, or bioinformatics pipeline.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726120","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}

引用次数: 0

Tracking a large‐scale and highly toxic Arctic algal bloom: Rapid detection and risk communication 追踪大规模高毒性北极藻华：快速检测和风险交流

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-10 DOI: 10.1002/lol2.10421

Evangeline Fachon, Robert S. Pickart, Gay Sheffield, Emma Pate, Mrunmayee Pathare, Michael L. Brosnahan, Eric Muhlbach, Kali Horn, Nathaniel N. Spada, Anushka Rajagopalan, Peigen Lin, Leah T. McRaven, Loreley S. Lago, Jie Huang, Frank Bahr, Dean A. Stockwell, Katherine A. Hubbard, Thomas J. Farrugia, Kathi A. Lefebvre, Donald M. Anderson

{"title":"Tracking a large‐scale and highly toxic Arctic algal bloom: Rapid detection and risk communication","authors":"Evangeline Fachon, Robert S. Pickart, Gay Sheffield, Emma Pate, Mrunmayee Pathare, Michael L. Brosnahan, Eric Muhlbach, Kali Horn, Nathaniel N. Spada, Anushka Rajagopalan, Peigen Lin, Leah T. McRaven, Loreley S. Lago, Jie Huang, Frank Bahr, Dean A. Stockwell, Katherine A. Hubbard, Thomas J. Farrugia, Kathi A. Lefebvre, Donald M. Anderson","doi":"10.1002/lol2.10421","DOIUrl":"https://doi.org/10.1002/lol2.10421","url":null,"abstract":"In recent years, blooms of the neurotoxic dinoflagellate Alexandrium catenella 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 A. catenella 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−1, 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.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive traits of Planctomycetota bacteria to thrive in macroalgal habitats and establish mutually beneficial relationship with macroalgae Planctomycetota 细菌在大型藻类生境中生长并与大型藻类建立互利关系的适应性特征

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-10 DOI: 10.1002/lol2.10424

Xueyan Gao, Yihua Xiao, Ziwei Wang, Hanshuang Zhao, Yufei Yue, Shailesh Nair, Zenghu Zhang, Yongyu Zhang

{"title":"Adaptive traits of Planctomycetota bacteria to thrive in macroalgal habitats and establish mutually beneficial relationship with macroalgae","authors":"Xueyan Gao, Yihua Xiao, Ziwei Wang, Hanshuang Zhao, Yufei Yue, Shailesh Nair, Zenghu Zhang, Yongyu Zhang","doi":"10.1002/lol2.10424","DOIUrl":"https://doi.org/10.1002/lol2.10424","url":null,"abstract":"Bacteria and macroalgae share an inseparable relationship, jointly influencing coastal ecosystems. Within macroalgae habitats, Planctomycetota, a group of bacteria notoriously challenging to cultivate, often dominate. However, the mechanisms facilitating their persistence in this environment remain unclear. Here, we successfully isolated a novel Planctomycetota bacterium, Stieleria sp. HD01, from the surface of kelp. We demonstrated that HD01 possesses a robust ability to metabolize fucoidan, which constitutes half of the kelp‐derived organic carbon and exhibits resistance to attack by most microorganisms. Moreover, HD01 can utilize a broad spectrum of other organics, indicating its metabolic versatility and competitive prowess within algal environments. Additionally, HD01 can secrete antagonistic substances against other bacteria, form biofilms, and employ superoxide dismutase and catalase to resist oxidative stress, further consolidating its ecological fitness. Comparative metagenomics analysis suggested that Planctomycetota may have a mutually beneficial relationship with kelp.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leaf litter breakdown phenology in headwater stream networks is modulated by groundwater thermal regimes and litter type 上游溪流网络中的落叶层分解物候学受地下水热机制和落叶层类型的影响

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-04 DOI: 10.1002/lol2.10423

Danielle K. Hare, Ashley M. Helton, Carolyn S. Cummins, Phillip M. Bumpers, Nathan J. Tomczyk, Phoenix A. Rogers, Seth J. Wenger, Erin R. Hotchkiss, Amy D. Rosemond, Jonathan P. Benstead

{"title":"Leaf litter breakdown phenology in headwater stream networks is modulated by groundwater thermal regimes and litter type","authors":"Danielle K. Hare, Ashley M. Helton, Carolyn S. Cummins, Phillip M. Bumpers, Nathan J. Tomczyk, Phoenix A. Rogers, Seth J. Wenger, Erin R. Hotchkiss, Amy D. Rosemond, Jonathan P. Benstead","doi":"10.1002/lol2.10423","DOIUrl":"10.1002/lol2.10423","url":null,"abstract":"Leaf litter dominates particulate organic carbon inputs to forest streams. Using data-informed simulations, we explored how litter type (slow- vs. fast-decomposing species), pulsed autumn litter inputs, groundwater-mediated temperature regimes, and climate warming affect litter breakdown in a 3rd-order stream network. We found that the time-dependent interactions of these variables govern network-scale litter breakdown phenology, with greater thermal sensitivity of slow-decomposing litter for both current and future scenarios. Groundwater thermal inputs modified litter breakdown phenology by reducing spring and summer and elevating winter litter breakdown fluxes. Under future warming scenarios, the source depth of contributing groundwater influenced summer detrital resources; shallow groundwater-fed streams had reduced summer resources compared to deep groundwater-fed streams. Our results demonstrate that predicting in-stream carbon cycling requires explicit consideration of the phenology of resource inputs and the seasonal timing of environmental factors, notably stream thermal regimes.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10423","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141545774","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}

引用次数: 0

Carbon emissions from inland waters may be underestimated: Evidence from European river networks fragmented by drying 内陆水域的碳排放量可能被低估了：因干旱而支离破碎的欧洲河网提供的证据

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-04 DOI: 10.1002/lol2.10408

Naiara López-Rojo, Thibault Datry, Francisco J. Peñas, Gabriel Singer, Nicolas Lamouroux, José Barquín, Amaia A. Rodeles, Teresa Silverthorn, Romain Sarremejane, Rubén del Campo, Edurne Estévez, Louise Mimeau, Frédéric Boyer, Annika Künne, Martin Dalvai Ragnoli, Arnaud Foulquier

{"title":"Carbon emissions from inland waters may be underestimated: Evidence from European river networks fragmented by drying","authors":"Naiara López-Rojo, Thibault Datry, Francisco J. Peñas, Gabriel Singer, Nicolas Lamouroux, José Barquín, Amaia A. Rodeles, Teresa Silverthorn, Romain Sarremejane, Rubén del Campo, Edurne Estévez, Louise Mimeau, Frédéric Boyer, Annika Künne, Martin Dalvai Ragnoli, Arnaud Foulquier","doi":"10.1002/lol2.10408","DOIUrl":"10.1002/lol2.10408","url":null,"abstract":"River networks contribute disproportionately to the global carbon cycle. However, global estimates of carbon emissions from inland waters are based on perennial rivers, even though more than half of the world's river length is prone to drying. We quantified CO2 and CH4 emissions from flowing water and dry riverbeds across six European drying river networks (DRNs, 120 reaches) and three seasons and identified drivers of emissions using local and regional variables. Drivers of emissions from flowing water differed between perennial and non-perennial reaches, both CO2 and CH4 emissions were controlled partly by the annual drying severity, reflecting a drying legacy effect. Upscaled CO2 emissions for the six DRNs at the annual scale revealed that dry riverbeds contributed up to 77% of the annual emissions, calling for an urgent need to include non-perennial rivers in global estimates of greenhouse gas emissions.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10408","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553410","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}

引用次数: 0

Consistency in marine heatwave experiments for ecological relevance and application: Key problems and solutions 海洋热浪实验的一致性与生态相关性及应用：关键问题与解决方案

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-02 DOI: 10.1002/lol2.10418

Deevesh A. Hemraj, Bayden D. Russell

引用次数: 0

Grazer‐induced changes on mechanical properties of diatoms frustule: A new proof for a watery arms race 噬菌体诱发的硅藻嵴椎机械特性变化：水中军备竞赛的新证据

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-01 DOI: 10.1002/lol2.10419

Huo Xu, Fengyuan Chen, Xiaodong Zhang, Zhen Zhang, Ke Pan, Hongbin Liu

{"title":"Grazer‐induced changes on mechanical properties of diatoms frustule: A new proof for a watery arms race","authors":"Huo Xu, Fengyuan Chen, Xiaodong Zhang, Zhen Zhang, Ke Pan, Hongbin Liu","doi":"10.1002/lol2.10419","DOIUrl":"https://doi.org/10.1002/lol2.10419","url":null,"abstract":"We investigated changes in physiology and mechanical properties of diatoms exposed to chemical cues released by copepods Pseudodiaptomus annandalei. Our results showed that the diatoms Phaeodactylum tricornutum, Cylindrotheca closterium, Thalassiosira weissflogii, and Amphora coffeaeformis exhibited elevated growth rates and a substantial 2‐ to 50‐fold increase in biogenic silica (BSi) content increase when exposed to the chemical cues except for Cyclotella sp. Atomic force microscopy and X‐ray photoelectron spectroscopy analyses revealed that diatom frustules exhibited a remarkable 3‐ to 10‐fold increase in modulus and a substantial 2‐ to 5‐fold increase in hardness when they received grazing signals. The increase in the proportion of condensed silicon in the frustules could be the major reason for the more mechanically robust cells. Our results indicate that diatoms simultaneously increase their growth rate and robustness when exposed to copepod chemical cues. This study at the nanoscale enhanced our understanding of how diatoms respond to zooplankton predation in marine ecosystems.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Knowing your limits: Patterns and drivers of nutrient limitation and nutrient–chlorophyll relationships in US lakes 了解你的极限：美国湖泊养分限制和养分-叶绿素关系的模式和驱动因素

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-01 DOI: 10.1002/lol2.10420

Ian M. McCullough, Xinyu Sun, Patrick J. Hanly, Patricia A. Soranno

{"title":"Knowing your limits: Patterns and drivers of nutrient limitation and nutrient–chlorophyll relationships in US lakes","authors":"Ian M. McCullough, Xinyu Sun, Patrick J. Hanly, Patricia A. Soranno","doi":"10.1002/lol2.10420","DOIUrl":"https://doi.org/10.1002/lol2.10420","url":null,"abstract":"Although understanding nutrient limitation of primary productivity in lakes is among the oldest research priorities in limnology, there have been few broad‐scale studies of the characteristics of phosphorus (P)‐, nitrogen (N)‐, and co‐limited lakes and their environmental context. By analyzing 3342 US lakes with concurrent P, N, and chlorophyll a (Chl a) samples, we showed that US lakes are predominantly co‐limited (43%) or P‐limited (41%). Majorities of lakes were P‐limited in the Northeast, Upper Midwest, and Southeast, and co‐limitation was most prevalent in the interior and western United States. N‐limitation (16%) was more prevalent than P‐limitation in the Great Basin and Central Plains. Nutrient limitation was related to lake, watershed, and regional variables, including Chl a concentration, watershed soil, and wet nitrate deposition. N and P concentrations interactively affected nutrient–chlorophyll relationships, which differed by nutrient limitation. Our study demonstrates the value of considering P, N, and environmental context in nutrient limitation and nutrient–chlorophyll relationships.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":7.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141489254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in phytoplankton size–structure alter trophic transfer in a temperate, coastal planktonic food web 浮游植物大小结构的变化改变了温带沿海浮游食物网的营养传递

IF 5.1 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-07-01 DOI: 10.1002/lol2.10410

Pierre Marrec, Susanne Menden-Deuer

{"title":"Changes in phytoplankton size–structure alter trophic transfer in a temperate, coastal planktonic food web","authors":"Pierre Marrec, Susanne Menden-Deuer","doi":"10.1002/lol2.10410","DOIUrl":"10.1002/lol2.10410","url":null,"abstract":"Microzooplankton grazing is an essential parameter to predict the fate of organic matter production in planktonic food webs. To identify predictors of grazing, we leveraged a 6-yr time series of coastal plankton growth and grazing rates across contrasting environmental conditions. Phytoplankton size–structure and trophic transfer were seasonally consistent with small phytoplankton cell dominance and low trophic transfer in summer, and large cell dominance and higher trophic transfer in winter. Departures from this pattern during two disruptive events revealed a critical link between phytoplankton size–structure and trophic transfer. An unusual summer bloom of large phytoplankton cells yielded high trophic transfer, and an atypical winter dominance of small phytoplankton resulted in seasonally atypical low trophic transfer. Environmental conditions during these events were neither seasonally atypical nor unique. Thus, phytoplankton size–structure rather than environmental conditions held a key-role driving trophic transfer. Phytoplankton size–structure is easily measurable and could impart predictive power of food-web structure and the fate of primary production in coastal ecosystems.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":null,"pages":null},"PeriodicalIF":5.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lol2.10410","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141495549","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}

引用次数: 0

Low‐molecular‐weight reduced sulfur substances: A major component of nonvolatile dissolved organic sulfur in the Pacific Ocean 低分子量还原硫物质：太平洋非挥发性溶解有机硫的主要成分

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2024-06-28 DOI: 10.1002/lol2.10417

Pierre Fourrier, Gabriel Dulaquais

引用次数: 0