Article
Engineering, Environmental
Zhidan Wen, Yingxin Shang, Kaishan Song, Ge Liu, Junbin Hou, Lili Lyu, Hui Tao, Sijia Li, Chen He, Quan Shi, Ding He
Summary: The trophic state of lakes has a significant impact on the properties and concentration of dissolved organic matter (DOM). DOM in eutrophic lakes is more biologically refractory and contains compounds that are harmful to the environment. The molecular composition of DOM is positively correlated with the trophic state index. Additionally, the molecular lability of DOM varies with the season and phytoplankton community succession.
Article
Environmental Sciences
Jiayue Gao, Weiying Feng, Fang Yang, Jing Liu, Wenhong Fan, Ying Wang, Qi Zhang, Wenhuan Yang
Summary: This study investigates the microbial community structure and dissolved organic matter (DOM) characteristics in the sediment of Daihai Lake, a saline lake in the Yellow River Basin, using fluorescence spectroscopy and 16S rRNA techniques. The research reveals the ecological and microbial mechanisms of material transport and transformation, and identifies key factors influencing community formation.
ENVIRONMENTAL RESEARCH
(2022)
Article
Limnology
Tanguy Soulie, Herwig Stibor, Sebastien Mas, Benjamin Braun, Johanna Knechtel, Jens C. Nejstgaard, Ulrich Sommer, Francesca Vidussi, Behzad Mostajir
Summary: In recent decades, the increase in terrestrial inputs has led to water color darkening known as brownification. An in situ mesocosm experiment was conducted to simulate brownification and investigate its effects on plankton community composition and functioning. The results suggest that brownification can significantly alter the composition of phytoplankton and zooplankton communities and the overall oxygen metabolism of plankton communities in coastal areas.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Green & Sustainable Science & Technology
Qi Liu, Yulu Tian, Yang Liu, Ming Yu, Zhaojiang Hou, Kejian He, Hui Xu, Baoshan Cui, Yuan Jiang
Summary: This study investigated phytoplankton communities at 110 sites in the Dongjiang River basin, China, and found that dissolved organic matter (DOM) is closely related to phytoplankton biomass and taxonomic composition, with different types of DOM having varying effects on phytoplankton community dynamics. The results suggest that DOM may serve as a potential warning of phytoplankton blooms.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biotechnology & Applied Microbiology
Falk Eigemann, Eyal Rahav, Hans-Peter Grossart, Dikla Aharonovich, Maren Voss, Daniel Sher
Summary: Phytoplankton-bacterium interactions play a significant role in global biogeochemical cycles. Phytoplankton fix carbon dioxide and release the synthesized compounds as dissolved organic matter (DOMp) which is processed and recycled by bacteria. This study investigated the impact of phytoplankton producer species and the transformation of DOMp over time on the accompanying bacterial community. The results showed that bacterial communities differed between DOMp types and over time, suggesting a certain bacterial specificity for the DOMp producer as well as a successive utilization of phytoplankton DOM by different bacterial taxa over time.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Microbiology
Benjamin Pontiller, Clara Perez-Martinez, Carina Bunse, Christofer M. G. Osbeck, Jose M. Gonzalez, Daniel Lundin, Jarone Pinhassi
Summary: This study utilized metatranscriptomics analysis to reveal the distribution of key gene systems involved in organic matter utilization in a stratified marine system. It found pronounced shifts in the transcription of genes encoding CAZymes, peptidases, and membrane transporters among key prokaryotic orders over depth, implying that sequential utilization and transformation of organic matter through the water column is a key feature that ultimately influences the efficiency of the biological carbon pump.
Article
Engineering, Environmental
Yun Zhang, Jun Wang, Juan Tao, Yongqiang Zhou, Hong Yang, Xuan Yang, Yuanrui Li, Qichao Zhou, Erik Jeppesen
Summary: The study elucidated the complex pathways through which geoclimatic factors, lake morphometry, land-use type, chemical and physical factors, and biological taxa influence carbon cycling in plateau lakes. These factors interact with each other to impact the concentrations of dissolved organic matter (DOM) and methane (CH4) in various ways.
Article
Environmental Sciences
Joaquin Ortiz, Javier Aristegui, Nauzet Hernandez-Hernandez, Mar Fernandez-Mendez, Ulf Riebesell
Summary: Artificial upwelling has been proposed as a method to enhance oceanic CO2 sequestration and fishery yields. However, there is limited evidence on its efficacy and side effects. A study conducted in oligotrophic waters showed that artificial upwelling had a significant impact on the pelagic community, especially at higher intensity. Recurring supply of upwelled waters showed better results compared to a single pulse.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
C. Pamela Orta-Ponce, Tamara Rodriguez-Ramos, Mar Nieto-Cid, Eva Teira, Elisa Guerrero-Feijoo, Antonio Bode, Marta M. Varela
Summary: The study revealed depth-stratification in leucine-to-carbon conversion factors (CFs) in the ocean, showing significant differences from epipelagic to bathypelagic waters, correlated with hydrographic variables, specific phylogenetic groups, and DOM quality and quantity indices. Attempting to predict CFs using relatively simple hydrographic and optical spectroscopic measurements was also explored in the study.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Zhang-mu Jing, Qing-qian Li, Yan-jie Wei, Bin Dong, Peng Yuan, Rui-xia Liu, Hong-jie Gao
Summary: Vegetation restoration projects can improve water quality and protect biodiversity. This study investigated the mechanism of protistan and bacterial community assembly processes in rivers with and without vegetation restoration. The results showed that both biotic and abiotic factors influenced the community assembly, and different DOM components guided bacterial and protistan competition.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Lei Zhou, Yongqiang Zhou, Xiangming Tang, Yunlin Zhang, Kyoung-Soon Jang, Anna J. Szekely, Erik Jeppesen
Summary: The study investigated the impact of different sources of dissolved organic matter (DOM) on carbon processing and successional dynamics of bacterial communities. Despite lower degradation of soil-derived DOM, all sources showed rapid initial metabolism of protein-like and aliphatic compounds. The findings suggest that DOM aromaticity is a key factor influencing bacterial community dynamics.
Review
Oceanography
Stefan Thiele, Anna Vader, Stuart Thomson, Karoline Saubrekka, Elzbieta Petelenz, Hilde Rief Armo, Oliver Mueller, Lasse Olsen, Gunnar Bratbak, Lise Ovreas
Summary: Climate change in the Arctic affects marine ecosystems, especially phytoplankton bloom dynamics, which in turn impact bacterial and archaeal communities. This study compared the composition of these communities from the Barents Sea to the Arctic Ocean north of Svalbard over three summers using 16S rRNA gene sequencing. The results showed variations in the dominant taxa in surface waters between years, potentially due to different phytoplankton bloom stages and carbon source availability. Deep water communities were consistently dominated by specific taxa. Changes in phytoplankton blooms can influence bacterial and archaeal communities and marine carbon cycling in surface waters.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Jianwei Li, Xiaoqian Sun, Ming Li, Jiying Zou, Hongfeng Bian
Summary: Elucidating the biogeographic patterns of soil microorganisms and their driving forces is crucial for predicting alterations in microbial-mediated functions caused by environmental changes. This study investigated the changes in soil microbial community and the composition of dissolved organic matter (DOM) in different stages of succession in Larix olgensis plantations. The findings suggest that the source of microorganisms increases with soil depth, and increasing forest age leads to higher specificity of bacteria and fungi.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
James N. Hitchcock
Summary: This study aimed to investigate the influence of different concentrations of microplastic fibers on phytoplankton community structure. Through two six-day experiments, it was found that high concentrations of microplastics significantly altered the structure of the phytoplankton community, increasing the abundance of certain cyanobacteria taxa while reducing the abundance of other taxa.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Limnology
Michael L. Pace, Cal D. Buelo, Stephen R. Carpenter
Summary: Lake respiration is supported by a combination of autochthonous and allochthonous resources, with temperature and organic matter inputs influencing the process. However, the variability in daily inputs can lead to fluctuations in respiration rates, with nutrients not directly tracking phytoplankton blooms in the lakes. Changes in hydrologic, climatic, and land use factors may result in linear responses in ecosystem processes like respiration.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Geosciences, Multidisciplinary
Bernard Yang, Mathew G. Wells, Bailey C. McMeans, Hilary A. Dugan, James A. Rusak, Gesa A. Weyhenmeyer, Jennifer A. Brentrup, Allison R. Hrycik, Alo Laas, Rachel M. Pilla, Jay A. Austin, Paul J. Blanchfield, Cayelan C. Carey, Matthew M. Guzzo, Noah R. Lottig, Murray D. MacKay, Trevor A. Middel, Don C. Pierson, Junbo Wang, Joelle D. Young
Summary: Traditionally, lakes are classified based on their thermal regime and trophic status, but this classification method is not sufficient to understand seasonally ice-covered lakes. Research has found that differently sized and deep seasonally ice-covered lakes exhibit different thermal stratification characteristics, leading to the proposal of new classification terms.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
William D. Hintz, Shelley E. Arnott, Celia C. Symons, Danielle A. Greco, Alexandra McClymont, Jennifer A. Brentrup, Miguel Canedo-Arguelles, Alison M. Derry, Amy L. Downing, Derek K. Gray, Stephanie J. Melles, Rick A. Relyea, James A. Rusak, Catherine L. Searle, Louis Astorg, Henry K. Baker, Beatrix E. Beisner, Kathryn L. Cottingham, Zeynep Ersoy, Carmen Espinosa, Jaclyn Franceschini, Angelina T. Giorgio, Norman Gobeler, Emily Hassal, Marie-Pier Hebert, Mercedes Huynh, Samuel Hylander, Kacie L. Jonasen, Andrea E. Kirkwood, Silke Langenheder, Ola Langvall, Hjalmar Laudon, Lovisa Lind, Maria Lundgren, Lorenzo Proia, Matthew S. Schuler, Jonathan B. Shurin, Christopher F. Steiner, Maren Striebel, Simon Thibodeau, Pablo Urrutia-Cordero, Lidia Vendrell-Puigmitja, Gesa A. Weyhenmeyer
Summary: Human-induced salinization poses a major threat to freshwater ecosystems. Current water quality guidelines are insufficient to protect lake food webs. New guidelines are urgently needed to safeguard lake ecosystems.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Limnology
R. Iestyn Woolway, Blaize Denfeld, Zeli Tan, Joachim Jansen, Gesa A. Weyhenmeyer, Sofia La Fuente
Summary: The study projects a decrease in winter stratification duration by an average of 18.5-53.9 days by the end of the 21st century under Representative Concentration Pathways 2.6-8.5. In warmer geographical regions, 35-69% of lakes are expected to no longer inversely stratify by 2070-2099 under RCPs 2.6-8.5. This could have implications for lakes, including shifts in biodiversity due to the misalignment of lifecycle events.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2022)
Article
Limnology
Marie-Pier Hebert, Celia C. Symons, Miguel Canedo-Arguelles, Shelley E. Arnott, Alison M. Derry, Vincent Fugere, William D. Hintz, Stephanie J. Melles, Louis Astorg, Henry K. Baker, Jennifer A. Brentrup, Amy L. Downing, Zeynep Ersoy, Carmen Espinosa, Jaclyn M. Franceschini, Angelina T. Giorgio, Norman Gobeler, Derek K. Gray, Danielle Greco, Emily Hassal, Mercedes Huynh, Samuel Hylander, Kacie L. Jonasen, Andrea Kirkwood, Silke Langenheder, Ola Langvall, Hjalmar Laudon, Lovisa Lind, Maria Lundgren, Alexandra McClymont, Lorenzo Proia, Rick A. Relyea, James A. Rusak, Matthew S. Schuler, Catherine L. Searle, Jonathan B. Shurin, Christopher F. Steiner, Maren Striebel, Simon Thibodeau, Pablo Urrutia Cordero, Lidia Vendrell-Puigmitja, Gesa A. Weyhenmeyer, Beatrix E. Beisner
Summary: This study conducted a large-scale mesocosm experiment across multiple sites in North America and Europe to investigate the response of lake zooplankton communities to varying chloride concentrations. The findings suggest that crustaceans are more sensitive to elevated chloride levels than rotifers, and that there is a consistent decrease in abundance and taxon richness with increasing salinity across different taxonomic groups. However, functional diversity shows a weaker loss compared to taxonomic diversity.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Environmental Sciences
Caroline Bjorneras, Gesa A. Weyhenmeyer, Dan Hammarlund, Per Persson, Emma S. Kritzberg
Summary: The increase in iron concentrations in lakes is likely due to increased loading from the catchment area rather than changes in the distribution between sediments and the water column. This may be caused by land-use changes, such as the expansion of coniferous forests over the past century.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Biodiversity Conservation
Joachim Jansen, Richard Iestyn Woolway, Benjamin M. Kraemer, Clement Albergel, David Bastviken, Gesa A. Weyhenmeyer, Rafael Marce, Sapna Sharma, Sebastian Sobek, Lars J. Tranvik, Marjorie Perroud, Malgorzata Golub, Tadhg N. Moore, Love Raman Vinna, Sofia La Fuente, Luke Grant, Don C. Pierson, Wim Thiery, Eleanor Jennings
Summary: Lakes play a significant role in global methane emissions, and future climate change is expected to lead to increased methane production in lakes, particularly in low-latitude areas.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Sapna Sharma, Alessandro Filazzola, Thi Nguyen, M. Arshad Imrit, Kevin Blagrave, Damien Bouffard, Julia Daly, Harley Feldman, Natalie Felsine, Harrie-Jan Hendricks-Franssen, Nikolay Granin, Richard Hecock, Jan Henning L'Abee-Lund, Ed Hopkins, Neil Howk, Michael Iacono, Lesley B. Knoll, Johanna Korhonen, Hilmar J. Malmquist, Wlodzimierz Marszelewski, Shin-Ichiro S. Matsuzaki, Yuichi Miyabara, Kiyoshi Miyasaka, Alexander Mills, Lolita Olson, Theodore W. Peters, David C. Richardson, Dale M. Robertson, Lars Rudstam, Danielle Wain, Holly Waterfield, Gesa A. Weyhenmeyer, Brendan Wiltse, Huaxia Yao, Andry Zhdanov, John J. Magnuson
Summary: In recent years, the accelerated ice loss in lakes has had significant impacts on winter ecological processes. Through interdisciplinary integration, we can enhance our understanding of the spatial and temporal patterns of ice loss and its consequences. The inclusion of lake ice records in future studies will contribute to harmonizing observations across different regions and facilitate interdisciplinary research.
Correction
Multidisciplinary Sciences
Sapna Sharma, Alessandro Filazzola, Thi Nguyen, M. Arshad Imrit, Kevin Blagrave, Damien Bouffard, Julia Daly, Harley Feldman, Natalie Feldsine, Harrie-Jan Hendricks-Franssen, Nikolay Granin, Richard Hecock, Jan Henning L'Abee-Lund, Ed Hopkins, Neil Howk, Michael Iacono, Lesley B. Knoll, Johanna Korhonen, Hilmar J. Malmquist, Wlodzimierz Marszelewski, Shin-Ichiro S. Matsuzaki, Yuichi Miyabara, Kiyoshi Miyasaka, Alexander Mills, Lolita Olson, Theodore W. Peters, David C. Richardson, Dale M. Robertson, Lars Rudstam, Danielle Wain, Holly Waterfield, Gesa A. Weyhenmeyer, Brendan Wiltse, Huaxia Yao, Andry Zhdanov, John J. Magnuson
Letter
Biodiversity Conservation
Jinling Wang, Yongqiang Zhou, Lei Zhou, Yunlin Zhang, Boqiang Qin, Robert G. M. Spencer, Justin D. Brookes, Erik Jeppesen, Gesa A. Weyhenmeyer, Fengchang Wu
GLOBAL CHANGE BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Gesa A. Weyhenmeyer, Ulrike Obertegger, Hugo Rudebeck, Ellinor Jakobsson, Joachim Jansen, Galina Zdorovennova, Sheel Bansal, Benjamin D. Block, Cayelan C. Carey, Jonathan P. Doubek, Hilary Dugan, Oxana Erina, Irina Fedorova, Janet M. Fischer, Laura Grinberga, Hans-Peter Grossart, Kulli Kangur, Lesley B. Knoll, Alo Laas, Fabio Lepori, Jacob Meier, Nikolai Palshin, Mark Peternell, Merja Pulkkanen, James A. Rusak, Sapna Sharma, Danielle Wain, Roman Zdorovennov
Summary: The quality and characteristics of lake ice play a crucial role in ice safety and the ecology beneath the ice. This study conducted a sampling campaign across the Northern Hemisphere during a warm winter and found that the lake ice commonly consists of unstable white ice, which increases in thickness towards the end of the ice cover season. The dominance of white ice is attributed to air temperatures fluctuating around the freezing point, which occurs more frequently during warmer winters. Under continued global warming, lakes will be increasingly covered by white ice, affecting ice safety and the growth of primary producers.
NATURE COMMUNICATIONS
(2022)
Article
Limnology
Shelley E. Arnott, Vincent Fugere, Celia C. Symons, Stephanie J. Melles, Beatrix E. Beisner, Miguel Canedo-Arguelles, Marie-Pier Hebert, Jennifer A. Brentrup, Amy L. Downing, Derek K. Gray, Danielle Greco, William D. Hintz, Alexandra McClymont, Rick A. Relyea, James A. Rusak, Catherine L. Searle, Louis Astorg, Henry K. Baker, Zeynep Ersoy, Carmen Espinosa, Jaclyn M. Franceschini, Angelina T. Giorgio, Norman Gobeler, Emily Hassal, Mercedes Huynh, Samuel Hylander, Kacie L. Jonasen, Andrea Kirkwood, Silke Langenheder, Ola Langvall, Hjalmar Laudon, Lovisa Lind, Maria Lundgren, Emma R. Moffett, Lorenzo Proia, Matthew S. Schuler, Jonathan B. Shurin, Christopher F. Steiner, Maren Striebel, Simon Thibodeau, Pablo Urrutia Cordero, Lidia Vendrell-Puigmitja, Gesa A. Weyhenmeyer, Alison M. Derry
Summary: The salinization of freshwaters poses a global threat to aquatic biodiversity. The study quantified the variation in chloride (Cl-) tolerance among 19 freshwater zooplankton species in four countries. The results showed high variation in Cl- tolerance among populations, with zooplankton community composition being the only factor that explained this variation. The large intraspecific variation in Cl- tolerance suggests that water quality guidelines should consider multiple populations and communities.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Microbiology
Ashish Verma, Dennis Amnebrink, Jarone Pinhassi, Johan Wikner
Summary: The distribution of prokaryotic metabolism between maintenance and growth activities has been proven to be significant by this mesocosm study, which mimicked temperature and nutrients representative of winter and summer conditions. The study obtained a wide range of growth efficiencies and specific growth rates, and replicated the relationship between respiration rate and growth rate observed in the field. Maintenance respiration accounted for a large proportion of prokaryotic respiration under different conditions. The experimental design provides a tool for studying prokaryotic energy metabolism under realistic conditions at the mesocosm scale.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Review
Limnology
Kaitlin L. Reinl, Ted D. Harris, Rebecca L. North, Pablo Almela, Stella A. Berger, Mina Bizic, Sarah H. Burnet, Hans-Peter Grossart, Bastiaan W. Ibelings, Ellinor Jakobsson, Lesley B. Knoll, Brenda M. Lafrancois, Yvonne McElarney, Ana M. Morales-Williams, Ulrike Obertegger, Igor Ogashawara, Ma Cristina Paule-Mercado, Benjamin L. Peierls, James A. Rusak, Siddhartha Sarkar, Sapna Sharma, Jessica V. Trout-Haney, Pablo Urrutia-Cordero, Jason J. Venkiteswaran, Danielle J. Wain, Katelynn Warner, Gesa A. Weyhenmeyer, Kiyoko Yokota
Summary: Cyanobacterial blooms have negative impacts on freshwater ecosystems, including releasing toxins, blocking light, and depleting oxygen. Climate change may promote cyanobacterial blooms, as increasing lake surface temperature can enhance their growth. Recent evidence shows that cyanobacterial blooms can also occur in cold-water temperatures (< 15 degrees C), even under ice-covered conditions.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Correction
Multidisciplinary Sciences
Gesa A. Weyhenmeyer, Ulrike Obertegger, Hugo Rudebeck, Ellinor Jakobsson, Joachim Jansen, Galina Zdorovennova, Sheel Bansal, Benjamin D. Block, Cayelan C. Carey, Jonathan P. Doubek, Hilary Dugan, Oxana Erina, Irina Fedorova, Janet M. Fischer, Laura Grinberga, Hans-Peter Grossart, Kulli Kangur, Lesley B. Knoll, Alo Laas, Fabio Lepori, Jacob Meier, Nikolai Palshin, Mark Peternell, Merja Pulkkanen, James A. Rusak, Sapna Sharma, Danielle Wain, Roman Zdorovennov
NATURE COMMUNICATIONS
(2023)
Article
Microbiology
Mate Vass, Karolina Eriksson, Ulla Carlsson-Graner, Johan Wikner, Agneta Andersson
Summary: This study investigated the fungal metacommunities in coastal habitats of a subarctic zone. The importance of biotic associations in the assembly of mycoplankton was quantified using a novel species distribution model and network approach. The results revealed that fungal distributions were more influenced by environmental factors and that there were numerous co-occurrences between dominant fungal groups, suggesting potential host-parasite and/or saprotroph links.
FEMS MICROBIOLOGY ECOLOGY
(2022)