Article
Ecology
Hu He, Xiaoyu Ning, Kunquan Chen, Qisheng Li, Kuanyi Li, Zhengwen Liu, Erik Jeppesen
Summary: In shallow lakes, intraguild predation can dampen trophic cascades, and antagonistic interactions between two common lake predators may weaken the combined effects of individual predators.
FRESHWATER BIOLOGY
(2021)
Article
Environmental Sciences
Linlin Bao, Jie Chen, Hongjin Tong, Jun Qian, Xuyong Li
Summary: This study investigated the impact of rubber dams on phytoplankton communities in an urban landscape river and analyzed the influencing factors. The results showed that dams led to an increase in phytoplankton biomass, and different dominant taxa were observed in different seasons and river sections. Nutrients, flow velocity, and temperature were identified as the main factors affecting the spatial-temporal variation in phytoplankton community structure.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Oceanography
M. D. Bharathi, V. Venkataramana, V. V. S. S. Sarma
Summary: This study investigates the impact of salinity and hydrological characteristics on phytoplankton community structure in tropical estuaries. The results show that the lower estuarine region is dominated by diatoms, while the upper estuarine region has higher phytoplankton biomass/abundance and more diverse taxa. Phytoplankton abundance is primarily governed by light availability and grazing pressure, while variations in nutrient concentrations and salinity influence phytoplankton community structure.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Environmental Sciences
Lei Xu, Wenwen Pan, Guijun Yang, Xiangming Tang, Robbie M. Martin, Guofeng Liu, Chunni Zhong
Summary: This study investigated the influence of light quality on phytoplankton community structure collected from Taihu Lake in China. Results showed that red, blue, and green light significantly promoted the growth of cyanobacteria, green algae, and diatoms, respectively, inducing successional changes in phytoplankton species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
B. L. D. Uthpala Pushpakumara, Kshitij Tandon, Anusuya Willis, Heroen Verbruggen
Summary: Interactions between microalgae and bacteria play a direct role in global biogeochemical cycles, but many of these interactions are still unknown. In this study, the potential microalgal-bacterial associations in aquatic ecosystems were identified using 16S rRNA gene-based co-occurrence networks. The results showed that there were densely connected neighborhoods in microalgal-bacterial modules, with Proteobacteria and Bacteroidetes representing the main hubs. The study also found species-specificity as a global feature of microalgal associated microbiomes. The findings demonstrate the potential of using 16S rRNA gene-based co-occurrence networks to guide research on microalgal-bacterial associations.
SCIENTIFIC REPORTS
(2023)
Article
Geosciences, Multidisciplinary
Walker O. Smith
Summary: Polar systems are important components of global biogeochemical cycles, but they are undersampled. This study focused on long-term measurements of primary productivity and chlorophyll concentrations in the Ross Sea of Antarctica. The results provide valuable insights into the productivity and composition of polar ecosystems.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Soil Science
V. Alvarez-Lopez, M. Lado-Linares, A. Lamas, B. Vazquez, M. R. Mosquera-Losada
Summary: Forest management practices can affect soil microbiome structure and composition by influencing the amount of organic matter, soil properties, and vegetation composition. This study found residual effects on soil chemical parameters after 15 years of sewage sludge and CaCO3 application in a silvopastoral system. However, no significant changes were observed in soil organic matter or its spectral signature. The structure of bacterial families in the soil was mainly shaped by soil pH and exchangeable aluminum, while other factors like total soil phosphorus, exchangeable sodium, and exchangeable potassium had the lowest correlation with bacterial abundances.
APPLIED SOIL ECOLOGY
(2023)
Article
Multidisciplinary Sciences
Simone R. Cotta, Thierry A. Pellegrinetti, Ana Paula D. Andreote, Juliana S. Costa, Hugo Sarmento, Marli F. Fiore
Summary: Microorganisms in harsh environments adapt by making tradeoffs between nutrient uptake and survival. In soda lakes, microorganisms invest energy in cellular maintenance during the dry season and nutrient uptake during the wet season. Cyanobacterial blooms have a significant impact on biomass and carbon flux.
SCIENTIFIC REPORTS
(2022)
Article
Microbiology
Mengsha Li, Guanhua Dai, Liqiang Mu
Summary: Soil bacteria play important roles in mountain ecosystems, and changes in soil physicochemical properties are important factors shaping the diversity, composition, and function of soil bacteria.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Abdullah Khan, Yibin Wei, Muhammad Adnan, Izhar Ali, Muqing Zhang
Summary: Ratooning in sugarcane leads to soil problems and alters microbial structure and activity. This study used multidisciplinary approaches to analyze soil samples from three consecutive ratooning sugarcane crops. The results showed a decline in crop yield, changes in soil nutrients and bacterial diversity, and acidic soil conditions. Restrainting soil acidity and maintaining soil nutrients, enzymatic activities, and microbial structure through liming or biofertilizers can benefit plants and create a sustainable sugarcane cropping system.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
Chi Hung Tang, Edward J. Buskey
Summary: Microzooplankton play a crucial role in connecting primary production and higher trophic levels in marine ecosystems. However, crude oil pollution can disrupt their grazing behavior and the relationship with phytoplankton, potentially leading to phytoplankton blooms.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Qi Liu, Hucai Zhang, Yang Zhang, Donglin Li, Youhong Gao, Haoyu Li, Lizeng Duan, Xiaonan Zhang, Fengwen Liu, Jing Xu, Tianbao Xu, Huayu Li
Summary: This study investigates the interactions between phytoplankton and bacterial communities in three lakes in southwestern China. The results uncover the influence of environmental conditions, phytoplankton community structure, resource-use efficiency, community turnover, and microcystins on bacterial community diversity and composition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Marine & Freshwater Biology
Juan Pablo Pacheco, Celina Aznarez, Eti Ester Levi, Annette Baattrup-Pedersen, Erik Jeppesen
Summary: The study found that the decline in nitrogen increased periphyton biomass and induced compositional changes, negatively correlated with phytoplankton and positively correlated with plant complexity. Warmer scenarios had negative effects on periphyton mainly under high nitrogen loadings, while low nitrogen conditions were associated with lower taxonomic richness, lower biovolume of N-2-fixing cyanobacteria, and increased biovolume of large-sized chlorophytes and non-N-2-fixing cyanobacteria.
Article
Plant Sciences
Tengfei Li, Yingying Wang, Muhammad Kamran, Xinyi Chen, Hua Tan, Mingxiu Long
Summary: The orchard inter-planting pattern is relatively new in China, and this study evaluated the effects of interrow mono- and mixed-planting of perennial ryegrass and alfalfa on soil nutrient, enzyme activity, and bacterial community diversity in apple orchards. The results demonstrated that grass inter-planting improved soil nutrient conditions, enzyme activity, and bacterial community composition. Therefore, inter-planting perennial ryegrass in apple orchards is a suitable strategy in China.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Eyal Rahav, Yaron Gertner, Barak Herut
Summary: The study found that rainwater deposition has a significant impact on phytoplankton and bacterial abundance and activity in LNLC marine systems. Rainwater supplementation of nutrients increased bacterial community productivity and alleviated nitrogen limitation to phytoplankton.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Ecology
Adria Auladell, Albert Barberan, Ramiro Logares, Esther Garces, Josep M. Gasol, Isabel Ferrera
Summary: This study characterized the seasonal dynamics of marine bacteria and identified seasonal abundance patterns as well as environmental parameters affecting them. It found that niche similarity decreased for certain genera as nucleotide divergence in the 16S rRNA gene increased, and observed evidence of seasonal differentiation within various genera.
Article
Microbiology
Carlota R. Gazulla, Adria Auladell, Clara Ruiz-Gonzalez, Pedro C. Junger, Marta Royo-Llonch, Carlos M. Duarte, Josep M. Gasol, Olga Sanchez, Isabel Ferrera
Summary: The study revealed that the aerobic anoxygenic phototrophic bacteria in the global surface ocean are mainly composed of Halieaceae (Gammaproteobacteria) and different clades of Alphaproteobacteria, with spatial structuring within oceans. Compared to other marine microbial communities, AAP communities exhibit an idiosyncratic global biogeographical pattern.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Juan Jose Pierella Karlusich, Eric Pelletier, Lucie Zinger, Fabien Lombard, Adriana Zingone, Sebastien Colin, Josep M. Gasol, Richard G. Dorrell, Nicolas Henry, Eleonora Scalco, Silvia G. Acinas, Patrick Wincker, Colomban de Vargas, Chris Bowler
Summary: Phytoplankton, accounting for over 45% of global primary production, play a significant role in aquatic food webs and the Earth System. However, current genetic surveys using PCR amplification of rRNA genes have limitations. This study introduces a PCR-free method targeting the photosynthetic gene psbO, showing improved correlations with flow cytometry and microscopy and providing new insights into the ecology of phytoplankton communities.
MOLECULAR ECOLOGY RESOURCES
(2023)
Article
Environmental Sciences
Romera-Castillo Cristina, Mallenco-Fornies Rebeca, Saa-Yanez Marola, Alvarez-Salgado Xose Anton
Summary: A study found that petrol-based plastics released fluorescent dissolved organic matter (FDOM) that can be utilized by microbes in the ocean, while biodegradable PLA did not release FDOM. The amount of dissolved organic carbon (DOC) released by PLA was similar to petrol-based plastics, indicating comparable microbial bioavailability. Therefore, caution should be taken when dealing with biodegradable plastics as not all types degrade in the ocean.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Maria Montserrat Sala, Francesc Peters, Marta Sebastian, Clara Cardelus, Eva Calvo, Celia Marrase, Ramon Massana, Carles Pelejero, Joan Sala-Coromina, Dolors Vaque, Josep M. Gasol
Summary: The study found that during the lockdown in spring 2020, there were changes in microbial communities in Blanes Bay, which may have been caused by factors such as decreased nitrogen atmospheric load, reduced wastewater flux, and decreased fishing activity in the area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Ernesto Villarino, James R. Watson, Guillem Chust, A. John Woodill, Benjamin Klempay, Bror Jonsson, Josep M. Gasol, Ramiro Logares, Ramon Massana, Caterina R. Giner, Guillem Salazar, X. Anton Alvarez-Salgado, Teresa S. Catala, Carlos M. Duarte, Susana Agusti, Francisco Mauro, Xabier Irigoien, Andrew D. Barton
Summary: This study conducted a comparative analysis of surface and deep ocean microbial communities and found that their spatial distribution is closely related to oceanic distance and environmental gradients. The dispersal rates and body sizes of prokaryotes and picoeukaryotes contributed to the differences in community similarity. In the deep ocean, both oceanic distance and environment played significant roles in shaping microbial spatial distribution, while in the surface ocean, the influence of the environment was stronger.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Biochemistry & Molecular Biology
Clara Ruiz-Gonzalez, Lara Rodriguez-Pie, Olena Maister, Valenti Rodellas, Aaron Alorda-Keinglass, Marc Diego-Feliu, Albert Folch, Jordi Garcia-Orellana, Josep M. Gasol
Summary: This study provides the first spatially-resolved characterization of bacterial assemblages in a coastal aquifer in the NW Mediterranean. The researchers found large variations in prokaryotic abundances, activity, and diversity along the salinity gradient, reflecting the pronounced physicochemical gradients. The study also revealed highly heterogeneous prokaryotic communities in subterranean estuaries, indicating spatial variability in their role in nutrient transformation within these land-sea transition zones.
Article
Environmental Sciences
Miguel Cabrera-Brufau, Celia Marrase, Eva Ortega-Retuerta, Sdena Nunes, Marta Estrada, M. Montserrat Sala, Dolors Vaque, Gonzalo L. Perez, Rafel Simo, Pedro Cermeno
Summary: Phytoplankton-derived organic matter plays a crucial role in sustaining heterotrophic marine life in regions with no terrestrial inputs. This study investigates the dynamics and drivers of the dissolved and particulate fractions of fluorescent organic matter (FOM) in the Southern Ocean. The results show that filtration has negligible effects on the fluorescence intensities of the visible FOM spectrum, indicating that dissolved fluorophores contribute the most to this signal. Additionally, protein-like fluorescence is primarily associated with particles, accounting for up to 90% of the total protein-like FOM.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Flora Vincent, Matti Gralka, Guy Schleyer, Daniella Schatz, Miguel Cabrera-Brufau, Constanze Kuhlisch, Andreas Sichert, Silvia Vidal-Melgosa, Kyle Mayers, Noa Barak-Gavish, J. Michel Flores, Marta Masdeu-Navarro, Jorun Karin Egge, Aud Larsen, Jan-Hendrik Hehemann, Celia Marrase, Rafel Simo, Otto X. Cordero, Assaf Vardi
Summary: Algal blooms are important for marine primary production and play a central role in microbial ecology and global elemental cycling. This study investigates the effect of viral infection on the composition of a bloom-associated microbiome and the fate of carbon, and reveals that high levels of viral infection can result in significant shifts in bacterial and eukaryotic assemblages as well as increased carbon sinking into the deep ocean.
NATURE COMMUNICATIONS
(2023)
Article
Microbiology
Adria Auladell, Isabel Ferrera, Lidia Montiel Fontanet, Celio Dias Santos Junior, Marta Sebastian, Ramiro Logares, Josep M. Gasol
Summary: Microbes play a crucial role in driving biogeochemical cycles in marine ecosystems through their diverse metabolic activities. This study investigated the seasonal dynamics of 21 biogeochemical functions in an oligotrophic coastal ocean site. The presence of key genes, high-rank gene taxonomy, and nucleotide variant dynamics were analyzed to understand the patterns of these functions. The study revealed the seasonality of different functions and identified the main taxonomic groups involved in each function.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Multidisciplinary Sciences
David K. Ngugi, Silvia G. Acinas, Pablo Sanchez, Josep M. Gasol, Susana Agusti, David M. Karl, Carlos M. Duarte
Summary: This study investigates the average genome size of planktonic prokaryotes across tropical and polar oceans and down to the hadal realm. Using hundreds of metagenomes of marine microorganisms, genome size was found to be highest in the perennially cold polar ocean, suggesting that environmental factors influence genome size selection and the ecological strategies of marine microbes.
NATURE COMMUNICATIONS
(2023)
Article
Microbiology
Ina Maria Deutschmann, Anders K. Krabberod, Francisco Latorre, Erwan Delage, Celia Marrase, Vanessa Balague, Josep M. Gasol, Ramon Massana, Damien Eveillard, Samuel Chaffron, Ramiro Logares
Summary: This study investigates the dynamics of microbial associations in a 10-year marine time series in the Mediterranean Sea. The results show that marine microbial associations exhibit recurrent seasonal changes and collapse and reassemble when transitioning between colder and warmer waters. Additionally, the study finds that microbial associations are more repeatable in colder months. These findings contribute to a better understanding of the functioning of the ocean microbiome.
Article
Microbiology
Xavier Rey-Velasco, Ona Deulofeu-Capo, Isabel Sanz-Saez, Clara Cardelus, Isabel Ferrera, Josep Gasol, Olga Sanchez
Summary: Isolation and culturing of marine bacteria is a useful approach to gain knowledge about their genomic properties, physiology, and ecology. This study conducted extensive isolation efforts on samples from seawater manipulation experiments in the northwest Mediterranean and found that decreasing grazing and viral pressure, as well as rising nutrient availability, are key factors increasing the success in culturing marine bacteria.
MICROBIOLOGY SPECTRUM
(2023)
