Limnology and Oceanography Letters最新文献

Vulnerability to ocean acidification of marine calcifying organisms cannot be predicted from the mineral type in their shells 海洋钙化生物对海洋酸化的脆弱性不能从其外壳的矿物类型来预测

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-12 DOI: 10.1002/lol2.70020

Gerald Langer, Patrizia Ziveri

引用次数: 0

Climate change and underwater light: Large‐scale changes in ultraviolet radiation transparency associated with intensifying wet–dry cycles 气候变化和水下光：与干湿循环加剧相关的紫外线辐射透明度的大尺度变化

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-10 DOI: 10.1002/lol2.70021

Shohei Watanabe, Erin P. Overholt, S. Geoffrey Schladow, Warwick F. Vincent, Craig E. Williamson

{"title":"Climate change and underwater light: Large‐scale changes in ultraviolet radiation transparency associated with intensifying wet–dry cycles","authors":"Shohei Watanabe, Erin P. Overholt, S. Geoffrey Schladow, Warwick F. Vincent, Craig E. Williamson","doi":"10.1002/lol2.70021","DOIUrl":"https://doi.org/10.1002/lol2.70021","url":null,"abstract":"Ultraviolet radiation (UV) is the most energetic waveband of incident solar radiation and has wide‐ranging effects in the aquatic environment. Our analysis of an 18‐year record of underwater irradiance and related limnological variables in sub‐alpine, ultra‐oligotrophic Lake Tahoe revealed orders of magnitude changes in UV transparency associated with interannual climate perturbations. The large‐scale shifts between years were caused by pronounced changes in the loading of allochthonous particulate matter and colored dissolved organic matter associated with regional dry–wet cycles, while autochthonous factors explained the seasonal variations in UV under average weather conditions. Water clarity in the photosynthetically available radiation (PAR) waveband showed less variation, resulting in large interannual differences in the UV : PAR ratio. Clearwater lakes are likely to experience increasingly large fluctuations in underwater UV and spectral irradiance due to ongoing climate change and precipitation extremes, with potential impacts on their ecosystem structure and function.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"19 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932427","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

Drivers of dissolved organic matter processing in subterranean estuaries 地下河口溶解有机质加工的驱动因素

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-07 DOI: 10.1002/lol2.70026

Elisa Calvo‐Martin, Xosé Antón Álvarez‐Salgado, María José Pazó Fernández, Vanesa Vieitez Dos Santos, J. Severino P. Ibánhez

引用次数: 0

Efficient cobalamin uptake and cycling contribute to the lack of cobalamins in the surface cobalt‐binding ligand pool in the North Pacific 有效的钴胺素摄取和循环有助于北太平洋表面钴结合配体池中钴胺素的缺乏

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-06 DOI: 10.1002/lol2.70019

Jiwoon Park, Katherine R. Heal, Anitra E. Ingalls, Ryan D. Groussman, Zinka Bartolek, E. Virginia Armbrust, Randelle M. Bundy

引用次数: 0

Correction to “Greenhouse gas emissions from lakes and impoundments: Upscaling in the face of global change” 修正“湖泊和水库的温室气体排放：面对全球变化的升级”

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-02 DOI: 10.1002/lol2.70022

引用次数: 0

The deep ocean as a major sink for terrestrial organic carbon 深海是陆地有机碳的主要储存库

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-02 DOI: 10.1002/lol2.70023

Hyekyung Park, Guebuem Kim

引用次数: 0

Aquatic heatwaves increase surface chlorophyll concentrations in experimental and reference lakes 水生热浪增加了实验湖和参考湖的表面叶绿素浓度

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-01 DOI: 10.1002/lol2.70024

Daniel K. Szydlowski, Katie A. Bollini, Michael L. Pace, Grace M. Wilkinson

引用次数: 0

Combining genetic and isotope frameworks improves reconstruction of fish provenance across riverscapes 结合遗传和同位素框架可以改善河流景观中鱼类来源的重建

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-05-01 DOI: 10.1002/lol2.70025

Ben Makhlouf, Timothy J. Cline, Diego Fernandez, Lisa Seeb, Elizabeth Lee, Sara Gilk‐Baumer, Diane Whited, Christian E. Zimmerman, Daniel E. Schindler

{"title":"Combining genetic and isotope frameworks improves reconstruction of fish provenance across riverscapes","authors":"Ben Makhlouf, Timothy J. Cline, Diego Fernandez, Lisa Seeb, Elizabeth Lee, Sara Gilk‐Baumer, Diane Whited, Christian E. Zimmerman, Daniel E. Schindler","doi":"10.1002/lol2.70025","DOIUrl":"https://doi.org/10.1002/lol2.70025","url":null,"abstract":"Understanding the spatial ecology of migratory species is uniquely challenging using conventional approaches. In fisheries such as for Pacific salmon, genetic stock identification (GSI) and isotope‐based methods have emerged as strategies for reconstructing spatial ecology but are limited by the spatial resolution of genetic differentiation and isotopic heterogeneity. We show that integrating these complementary datasets improve the spatial resolution of provenance assignments. To do so, we reconstructed basin‐wide estimates of natal origin locations for Chinook salmon in the Yukon River using samples (n = 247) from an experimental fishery designed to assess in‐season run timing. A combined framework improved precision of likely provenance assignments (stream km > 0.7 posterior probability) by 92% over genetic assignments and 52% over strontium isotope methods. In doing so, we illustrate watershed scale estimates of natal origin distributions with a greater resolution available from GSI or isotope data alone.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"20 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143893639","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

A novel mechanism explaining the temperature dependence of marine unicellular nitrogen‐fixing cyanobacteria 一个解释海洋单细胞固氮蓝藻温度依赖性的新机制

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-04-29 DOI: 10.1002/lol2.10458

Lixia Deng, Jiawei Chen, Jonathan P. Zehr, Jiaxing Liu, Xiaodong Zhang, Shunyan Cheung, Hongbin Liu

{"title":"A novel mechanism explaining the temperature dependence of marine unicellular nitrogen‐fixing cyanobacteria","authors":"Lixia Deng, Jiawei Chen, Jonathan P. Zehr, Jiaxing Liu, Xiaodong Zhang, Shunyan Cheung, Hongbin Liu","doi":"10.1002/lol2.10458","DOIUrl":"https://doi.org/10.1002/lol2.10458","url":null,"abstract":"The major marine nitrogen‐fixing cyanobacterium, Crocosphaera watsonii, is restricted to warm tropical and subtropical oceans, while the underlying mechanisms remain unclear. C. watsonii fixes nitrogen (oxygen‐sensitive) and carbon (oxygen‐evolving) during night and day, respectively. By diel analyses of physiological rates and transcriptome at its optimal (28°C) and a lower temperature (23°C), we found that the low temperature delayed the enhancement of respiration (oxygen‐consuming) and the onset of nitrogen fixation during nighttime. Transcription of the master regulator of circadian gene expression, circadian genes, and major metabolic pathways (e.g., respiration, nitrogen fixation, and photosynthesis) was delayed at the low temperature, suggesting that low temperature might decouple intracellular and environmental diurnal cycles and cause resource limitation and reduced growth. We propose that temperature might mediate the circadian clock, thereby regulating diurnal rhythm of nitrogen and carbon fixation, explaining the temperature dependence (particularly the lower thermal limit) and biogeography of C. watsonii.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"24 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890081","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

Spatiotemporal assessment of benthic macroinvertebrate communities in the Bermejo River Basin in the Ecuadorian Amazonia 厄瓜多尔亚马逊河Bermejo河流域底栖大型无脊椎动物群落的时空评价

IF 7.8 2区地球科学

Limnology and Oceanography Letters Pub Date : 2025-04-26 DOI: 10.1002/lol2.70012

Federico Sinche Chele, Manuel Cabrera Quezada, Roly Ramirez, Augusto Vargas, Jessica Cayambe, Jennifer Alvarez, Pablo Carrera, Hayda Andrade, Edison Segura

{"title":"Spatiotemporal assessment of benthic macroinvertebrate communities in the Bermejo River Basin in the Ecuadorian Amazonia","authors":"Federico Sinche Chele, Manuel Cabrera Quezada, Roly Ramirez, Augusto Vargas, Jessica Cayambe, Jennifer Alvarez, Pablo Carrera, Hayda Andrade, Edison Segura","doi":"10.1002/lol2.70012","DOIUrl":"https://doi.org/10.1002/lol2.70012","url":null,"abstract":"The Cofán communities rely on the Cofán Bermejo Ecological Reserve for their survival and cultural practices. Due to the rugged and inaccessible topography of the reserve in the Northern Ecuadorian Amazon region, limited biomonitoring and ecological characterization studies of the ecosystem health have been conducted. We investigated the community composition and functional structure of benthic macroinvertebrates in the Bermejo River basin by identifying bioindicators and measuring physicochemical variables. Our results indicated that predators were consistently the dominant taxa in all sampled sites, and that the taxonomic abundance was positively correlated with richness and the collector taxa. We also observed positive relations between pH and taxonomic abundance, and between water temperature and the biological monitoring working party metric. Primary associations were also found between feeding guilds, pollution‐sensitive taxa, and ecological water indices. This work provided a first characterization of the macroinvertebrate communities and physicochemical parameters in the Bermejo River basin.","PeriodicalId":18128,"journal":{"name":"Limnology and Oceanography Letters","volume":"4 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876145","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