Article
Ecology
Maria Stockenreiter, Jana Isanta Navarro, Felicitas Buchberger, Herwig Stibor
Summary: Lake stratification becomes stronger as surface water temperatures rise, leading to a reduction in the depth of the mixed layer. Phytoplankton communities are affected by different light qualities, with lab and mesocosm experiments showing that a shift in light spectrum alone can promote cyanobacterial abundance, potentially impacting food web dynamics.
FRESHWATER BIOLOGY
(2021)
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
Microbiology
Judith Piontek, Christian Meeske, Christiane Hassenruck, Anja Engel, Klaus Juergens
Summary: This study investigates the bacterioplankton community in the largely understudied Weddell Sea and reveals that the taxonomic composition and activity of bacterioplankton are primarily driven by the distribution of productive coastal polynyas and less productive, mostly ice-covered sites. The availability of organic matter, as reflected in the concentrations and composition of dissolved carbohydrates and proteins, also plays a role in shaping the bacterioplankton community. Additionally, the study finds that bacterial production at bloom stations is higher than at less productive sites.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Microbiology
Veronika Dashkova, Dmitry Malashenkov, Assel Baishulakova, Thomas A. Davidson, Ivan A. Vorobjev, Erik Jeppesen, Natasha S. Barteneva
Summary: This study explores the effects of temperature and nutrient enrichment on phytoplankton communities in shallow lakes. It finds that nitrogen enrichment leads to a shift in dominance from cyanobacteria to a mix of cyanobacteria and green algae. Additionally, high temperatures stimulate phytoplankton size increase, while low temperatures result in size decrease. The combination of high temperature and nitrogen enrichment leads to the lowest phytoplankton diversity.
Article
Ecology
Cecilia Costas-Selas, Sandra Martinez-Garcia, Ramiro Logares, Marta Hernandez-Ruiz, Eva Teira
Summary: This study provides the first detailed description of the seasonal patterns in bacterial community composition (BCC) in shelf waters off the Ria de Vigo (Spain). The study also reveals strong correlations between BCC and small-sized eukaryotic community composition (ECC), suggesting the importance of biotic interactions in structuring the microbial plankton in this productive area.
Article
Microbiology
Liang Zhao, Li-Zhou Lin, Ying Zeng, Wen-Kai Teng, Meng-Yun Chen, Jerry J. Brand, Ling-Ling Zheng, Nan-Qin Gan, Yong-Hui Gong, Xin-Yi Li, Jin Lv, Ting Chen, Bo-Ping Han, Li-Rong Song, Wen-Sheng Shu
Summary: In freshwater ecosystems, the interaction between algae and heterotrophic bacteria may lead to the formation of bacterial populations with the ability to degrade phosphonates, increasing the proliferation capabilities of cyanobacteria. Metatranscriptomic analysis of aggregate samples suggests that the cooperation between algae and heterotrophic bacteria plays a crucial role in the proliferation of cyanobacteria.
Article
Biodiversity Conservation
T. E. G. Biggs, P. D. Rozema, C. Evans, K. R. Timmermans, M. P. Meredith, D. W. Pond, C. P. D. Brussaard
Summary: This study combined pigment-based taxonomy with flow cytometry to investigate the light response of Southern Ocean phytoplankton. The results showed that different-sized diatoms exhibit different responses to light, with intermediate-sized diatoms showing the fastest net growth rate under low light and dominating the phytoplankton community. Low light was found to be a key factor limiting accumulation and peak biomass of phytoplankton, and the preceding low-light period likely plays a crucial role in determining the sustainability and growth of different natural Antarctic phytoplankton populations.
Article
Microbiology
Katherine R. Heal, Bryndan P. Durham, Angela K. Boysen, Laura T. Carlson, Wei Qin, Francois Ribalet, Angelicque E. White, Randelle M. Bundy, E. Virginia Armbrust, Anitra E. Ingalls
Summary: Phytoplankton play a crucial role in transforming inorganic carbon into organic compounds, impacting the microbial food web in the ocean. Research has shown that the chemical composition of the surface ocean is directly shaped by phytoplankton metabolites, highlighting the importance of phytoplankton diversity in marine ecosystems.
Article
Environmental Sciences
Yitong Ding, Ming Li, Baozhu Pan, Gengnan Zhao, Li Gao
Summary: The study found that the phytoplankton community composition in different regions of the Yellow River is greatly influenced by spatial and climatic factors, with a lesser impact from water quality. Phytoplankton biomass in impoundments was significantly higher than in free-flowing rivers, primarily due to anthropogenic impacts.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Soil Science
Juan Xiong, Zhaohui Liu, Yupeng Yan, Jinling Xu, Dong Liu, Wenfeng Tan, Xionghan Feng
Summary: The study demonstrates the significant role of clay minerals, such as illite, in adsorbing phosphorus in subtropical Alfisols, alongside Al/Fe (hydr)oxides. There is a strong linear correlation between P adsorbed by illite and Olsen P levels in the soil.
Article
Environmental Sciences
Flavien Petit, Julia Uitz, Catherine Schmechtig, Celine Dimier, Josephine Ras, Antoine Poteau, Melek Golbol, Vincenzo Vellucci, Herve Claustre
Summary: This study investigates the main sources of natural variability in the in-situ fluorescence signal in the global open ocean, focusing on the influence of phytoplankton community composition. The results show that the phytoplankton community composition plays a key role in the relationship between the in-situ fluorescence signal and Chla concentration.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Kristian Spilling, Eero Asmala, Noora Haavisto, Lumi Haraguchi, Kaisa Kraft, Anne-Mari Lehto, Aleksandra M. Lewandowska, Joanna Norkko, Jonna Piiparinen, Jukka Seppala, Mari Vanharanta, Anu Vehmaa, Pasi Ylostalo, Timo Tamminen
Summary: Climate change-induced brownification affects the coastal seas and has potential impacts on the planktonic ecosystem, including changes in phytoplankton community composition and carbon fluxes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Vanda Brotas, Afonso Ferreira, Vera Veloso, Andreia Tracana, Catarina V. Guerreiro, Glen Adam Tarran, E. Malcolm S. Woodward, Lourenco Ribeiro, Jane Netting, Daniel Clewley, Steve B. Groom
Summary: Through the Atlantic Meridional Transect (AMT) program, researchers investigated the size structure of the phytoplankton community in the Atlantic Ocean and identified the abundance and spatial distribution of different taxa in different regions. The study revealed significant differences in community composition between regions and detected changes over recent years, indicating the need for further research.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Tebatso M. Moloto, Sandy J. Thomalla, Marie E. Smith, Bettina Martin, Deon C. Louw, Rolf Koppelmann
Summary: In this study, a multispectral remote sensing approach is used to detect dominant phytoplankton groups in the northern Benguela upwelling system. This ocean colour remote sensing algorithm has the potential to map the phenology of phytoplankton groups on unprecedented spatial and temporal scales, advancing our understanding of ecosystems and environmental monitoring.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Luis M. Bolanos, Chang Jae Choi, Alexandra Z. Worden, Nicholas Baetge, Craig A. Carlson, Stephen Giovannoni
Summary: This study conducted a comprehensive survey of microbial profiles in the western North Atlantic, revealing stark seasonal differences in composition and richness delimited by the biogeographical distribution of the planktonic communities.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Marine & Freshwater Biology
J. Gonzalez, E. Fernandez, F. G. Figueiras
Summary: This study used a mesocosms approach to assess the seasonal variability and the effect of oil spills on the structure and dynamics of marine microbial plankton communities in a coastal upwelling system. The results showed that oil spills had negligible effects on the plankton community structure and dynamics in this system.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Chemistry, Medicinal
Patricio A. Diaz, Gonzalo Alvarez, Gemita Pizarro, Juan Blanco, Beatriz Reguera
Summary: Chile is the world's major exporter of mussels and scallops, but the lipophilic toxins produced by microalgal species can have negative impacts on both shellfish exploitation and human health. The most widespread LT producers in Chile are species of the Dinophysis acuminata complex and Protoceratium reticulatum. The current official method for shellfish safety control in Chile is the mouse bioassay, but it has limitations that can hinder progress in toxin identification and result in unnecessary harvesting bans.
Review
Oceanography
Mikel Latasa, Renate Scharek, Xose Anxelu G Moran, Andres Gutierrez-Rodriguez, Mikhail Emelianov, Jordi Salat, Montserrat Vidal, Marta Estrada
Summary: A detailed study on the composition and dynamics of phytoplankton in the northwestern Mediterranean Sea revealed significant variability in different seasons and environmental conditions.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Geosciences, Multidisciplinary
Bieito Fernandez Castro, Marian Pena, Enrique Nogueira, Miguel Gilcoto, Esperanza Broullon, Antonio Comesana, Damien Bouffard, Alberto C. Naveira Garabato, Beatriz Mourino-Carballido
Summary: Research shows that turbulent mixing generated by the swimming activity of marine organisms can be as efficient as geophysical turbulence, enhancing vertical mixing in the ocean. This has significant implications for productive upper ocean regions.
Article
Multidisciplinary Sciences
Pedro Cermeno, Carmen Garcia-Comas, Alexandre Pohl, Simon Williams, Michael J. Benton, Chhaya Chaudhary, Guillaume Le Gland, R. Dietmar Mueller, Andy Ridgwell, Sergio M. Vallina
Summary: The fossil record of marine invertebrates has been used to study the limits of global diversity in the sea. Ecological theory suggests that as diversity grows, biological interactions impose limits on diversity. However, the extent to which these interactions have constrained diversity over evolutionary time remains unclear. A regional diversification model was developed to reproduce the trends in global diversity of marine invertebrates, and it was found that less than 2% of the global flooded continental area approached ecological saturation. The overall increase in global diversity was attributed to the development of diversity hotspots under stable Earth system conditions and maximum continental fragmentation.
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
Moira Decima, Michael R. Stukel, Scott D. Nodder, Andres Gutierrez-Rodriguez, Karen E. Selph, Adriana Lopes dos Santos, Karl Safi, Thomas B. Kelly, Fenella Deans, Sergio E. Morales, Federico Baltar, Mikel Latasa, Maxim Y. Gorbunov, Matt Pinkerton
Summary: Salp blooms in the Southern Ocean have significant impacts on microbial dynamics and the global biological carbon pump (BCP). Their grazing activities reduce primary production and increase particle export, resulting in higher BCP efficiency compared to non-salp locations.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Ruben Campanero, Nadia Burgoa, Bieito Fernandez-Castro, Sara Valiente, Mar Nieto-Cid, Alba M. Martinez-Perez, Maria Dolores Gelado-Caballero, Nauzet Hernandez-Hernandez, Angeles Marrero-Diaz, Francisco Machin, Angel Rodriguez-Santana, Ines Hernandez-Garcia, Antonio Delgado-Huertas, Antonio Martinez-Marrero, Javier Aristegui, Xose Anton Alvarez-Salgado
Summary: In this study, the distributions of dissolved and suspended organic matter in the Cape Verde Frontal Zone (CVFZ) were investigated at high resolution. The results indicate that the input of Sahara dust and release of DOM from sinking particles are key factors contributing to the complexity of DOM and POM dynamics in the CVFZ.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Marta M. Rufino, Emilia Salgueiro, Antje A. H. L. Voelker, Paulo S. Polito, Pedro A. Cermeno, Fatima Abrantes
Summary: This study examines the diversity distribution of planktonic foraminifera in the Atlantic Ocean and finds that sea surface temperature, chlorophyll-a, and ocean kinetic energy are the main environmental drivers shaping their diversity. Additionally, the study redefines the biogeographic zones in the Atlantic Ocean and identifies important marine gradients.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Esther Velasco-Senovilla, Patricio A. Diaz, Enrique Nogueira, Francisco Rodriguez, Jose L. Garrido, Manuel Ruiz-Villarreal, Beatriz Reguera
Summary: In the Galician Rias Baixas, Dinophysis acuminata is the main cause of harmful algae bloom (HAB) events which result in shellfish harvesting bans in Europe. This study reveals rapid changes in the vertical and across ria-shelf distributions of D. acuminata during transitions from spin-down to spin-up phases of upwelling cycles. The results suggest that abiotic (bottom-up) control outweighs biological constraints in determining the distribution of D. acuminata.
Article
Oceanography
Oscar Sepulveda Steiner, Alexander L. Forrest, Jasmin B. T. McInerney, Bieito Fernandez Castro, Sebastien Lavanchy, Alfred Wuest, Damien Bouffard
Summary: Recent research has used microstructure turbulence measurements to improve our understanding of energy distribution in lakes and how it relates to vertical fluxes. However, a lack of lake-wide turbulence measurements hampers our ability to accurately assess these energy budgets on a large scale. In this study, an autonomous underwater glider was used to measure turbulence in Lake Geneva, revealing spatial variability and the important role of the slope region in mixing and energy dissipation.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Limnology
Esperanza Broullon, Peter J. S. Franks, Bieito Fernandez Castro, Miguel Gilcoto, Antonio Fuentes-Lema, Maria Perez-Lorenzo, Emilio Fernandez, Beatriz Mourino-Carballido
Summary: A study found that the high productivity of long, narrow bays may be due to the rapid rise of nutrient-rich isopycnals into the euphotic zone during upwelling pulses, triggering fast nutrient uptake and chlorophyll production. The tight coupling between physical and biological processes driven by wind forcing could explain the higher productivity of these bays.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Ecology
Boris Sauterey, Guillaume Le Gland, Pedro Cermeno, Olivier Aumont, Marina Levy, Sergio M. Vallina
Summary: As climate change progresses, ecosystems are experiencing unprecedented warming and extreme heat events. However, little is known about the ability of oceanic phytoplankton communities to adapt to these changes, which play a crucial role in regulating Earth's climate. This study uses an eco-evolutionary model to simulate the adaptive response of marine phytoplankton to temperature changes. The results suggest that while phytoplankton can adapt to gradual temperature increases over a century, rapid and extreme temperature changes can lead to reduced primary productivity and potentially overestimated resilience to climate change in current models.
ECOLOGICAL MODELLING
(2023)
Review
Oceanography
Mikel Latasa, Francisco Rodriguez, Susana Agusti, Marta Estrada
Summary: A pigment chemotaxonomic approach was used to study the distribution of phytoplankton groups in the oligotrophic tropical and subtropical regions of the Atlantic, Indian, and Pacific oceans. The results showed the presence of a subsurface deep chlorophyll maximum (DCM) in most of the sampling stations, and the composition of phytoplankton populations was relatively stable. Green algae and Prochlorococcus were the major contributors to total chlorophyll, while diatoms and dinoflagellates had lower contributions.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Geosciences, Multidisciplinary
Zhibo Shao, Yangchun Xu, Hua Wang, Weicheng Luo, Lice Wang, Yuhong Huang, Nona Sheila R. Agawin, Ayaz Ahmed, Mar Benavides, Mikkel Bentzon-Tilia, Ilana Berman-Frank, Hugo Berthelot, Isabelle C. Biegala, Mariana B. Bif, Antonio Bode, Sophie Bonnet, Deborah A. Bronk, Mark V. Brown, Lisa Campbell, Douglas G. Capone, Edward J. Carpenter, Nicolas Cassar, Bonnie X. Chang, Dreux Chappell, Yuh-ling Lee Chen, Matthew J. Church, Francisco M. Cornejo-Castillo, Amalia Maria Sacilotto Detoni, Scott C. Doney, Cecile Dupouy, Marta Estrada, Camila Fernandez, Bieito Fernandez-Castro, Debany Fonseca-Batista, Rachel A. Foster, Ken Furuya, Nicole Garcia, Kanji Goto, Jesus Gago, Mary R. Gradoville, M. Robert Hamersley, Britt A. Henke, Cora Horstmann, Amal Jayakumar, Zhibing Jiang, Shuh-Ji Kao, David M. Karl, Leila R. Kittu, Angela N. Knapp, Sanjeev Kumar, Julie LaRoche, Hongbin Liu, Jiaxing Liu, Caroline Lory, Carolin R. Loscher, Emilio Maranon, Lauren F. Messer, Matthew M. Mills, Wiebke Mohr, Pia H. Moisander, Claire Mahaffey, Robert Moore, Beatriz Mourino-Carballido, Margaret R. Mulholland, Shin-ichiro Nakaoka, Joseph A. Needoba, Eric J. Raes, Eyal Rahav, Teodoro Ramirez-Cardenas, Christian Furbo Reeder, Lasse Riemann, Virginie Riou, Julie C. Robidart, Vedula V. S. S. Sarma, Takuya Sato, Himanshu Saxena, Corday Selden, Justin R. Seymour, Dalin Shi, Takuhei Shiozaki, Arvind Singh, Rachel E. Sipler, Jun Sun, Koji Suzuki, Kazutaka Takahashi, Yehui Tan, Weiyi Tang, Jean-Eric Tremblay, Kendra Turk-Kubo, Zuozhu Wen, Angelicque E. White, Samuel T. Wilson, Takashi Yoshida, Jonathan P. Zehr, Run Zhang, Yao Zhang, Ya-Wei Luo
Summary: This study presents an updated version (version 2) of the global oceanic diazotroph database, which significantly increases the number of in situ diazotrophic measurements and provides more detailed insights into nitrogen fixation in the global ocean. Version 2 yields significantly higher estimates of nitrogen fixation rates compared to version 1, particularly in the South Pacific and North Atlantic regions. Furthermore, additional data sheets for non-cyanobacterial diazotrophs and cell-specific N2 fixation rates have been included in version 2, enhancing the database's comprehensiveness.
EARTH SYSTEM SCIENCE DATA
(2023)
