Article
Environmental Sciences
Sophia Ouaissa, Francisco Gomez-Jakobsen, Lidia Yebra, Isabel Ferrera, Enrique Moreno-Ostos, Maria Dolores Belando, Juan M. Ruiz, Jesus M. Mercado
Summary: The Mar Menor coastal lagoon has experienced severe degradation caused by nutrient pollution over the past three decades. The bloom of cyanobacteria in 2015 resulted in a significant ecological change. Our analysis reveals that the phytoplankton in the years 2016-2021 did not exhibit a seasonal variability pattern, with diatoms dominating the community and occasionally reaching high abundance levels above 10^7 cells L-1 along with chlorophyll a concentrations exceeding 20 μg L-1. The taxonomic composition, temporal variation patterns, and cell abundance of phytoplankton during this period differed significantly from the data prior to 2015, indicating a profound change in the trophic status of the lagoon.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Jesus M. Mercado, Dolores Cortes, Francisco Gomez-Jakobsen, Candela Garcia-Gomez, Sophia Ouaissa, Lidia Yebra, Isabel Ferrera, Nerea Valcarcel-Perez, Maria Lopez, Rocio Garcia-Mun, Aranzazu Ramos, Jaime Bernardeau, Maria Dolores Belando, Eugenio Fraile-Nuez, Juan M. Ruiz
Summary: Through monthly samplings and satellite color images from 2002 to 2019, researchers combined data to determine that the ecosystem disruptive algal bloom (EDAB) affecting the Mar Menor coastal lagoon began in 2014 with significant changes attributed to increasing abundance of Synechococcus. Furthermore, changes in diatom and dinoflagellate abundances from 2016 to 2019 were linked to floods, indicating that EDAB has substantially altered the homeostatic capacity of the lagoon.
MARINE POLLUTION BULLETIN
(2021)
Article
Biodiversity Conservation
Julien Di Pane, Karen Helen Wiltshire, Matthew McLean, Maarten Boersma, Cedric Leo Meunier
Summary: Phytoplanktonic organisms are highly sensitive to environmental change and changes in their functional structure can have profound impacts on ecosystem functioning. In a study of the southern North Sea, researchers found a shift in phytoplankton functional structure between 1998 and 2004, related to changes in environmental conditions and the abundance of specific taxa. This shift was driven by warming and decreasing phosphorus concentrations, and may have implications for nutrient availability and copepod abundances in the ecosystem. The study highlights the important role of phytoplankton in coastal ecosystems and the potential long-term impacts of global and regional changes.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Biodiversity Conservation
Loick Kleparski, Gregory Beaugrand, Martin Edwards, Clare Ostle
Summary: This study uses a species-based modeling approach and large-scale plankton observations to investigate phenological shifts in diatoms and dinoflagellates in the North Atlantic Ocean. The findings suggest that different phenotypic and abundance changes are projected for these phytoplankton groups, with flattened diatoms predicted to decline while elongated diatoms and dinoflagellates expected to increase.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Environmental Sciences
Sem Likumahua, Francesca Sangiorgi, M. Karin de Boer, Willem M. Tatipatta, Daniel D. Pelasula, Dominggus Polnaya, Jance Hehuwat, Donna M. Siahaya, Anita G. J. Buma
Summary: The study documented dinocyst ecological preferences in Ambon Bay, Eastern Indonesia, and investigated the role of bay sediments as seedbanks for toxic bloom events. Twenty-three dinocyst species were identified, with high concentrations found in the inner bay. Environmental factors played a significant role in dinocyst distribution, with Polysphaeridium zoharyi cyst concentration positively correlated with phosphorus. Cysts may serve as seedbanks for Pyrodinium bahamense blooms in the area.
MARINE POLLUTION BULLETIN
(2021)
Article
Ecology
Ben Stelling, Edward Phlips, Susan Badylak, Leslie Landauer, Mary Tate, Anne West-Valle
Summary: This study examined the seasonal patterns of phytoplankton biomass and composition off Cape Canaveral on the east coast of Florida for a period of 6 years (2013-2019). The results showed that picoplanktonic cyanobacteria dominated in the summer, while a mix of picocyanobacteria and dinoflagellates dominated in the fall. These seasonal differences were attributed to changes in wind directions, which influenced nutrient and phytoplankton inputs. The findings highlight the importance of external factors in shaping phytoplankton biomass and composition, and the potential impacts of cultural eutrophication and future climate changes on phytoplankton communities.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Jie Ma, Fengyuan Chen, Zhen Zhang, Yanping Li, Jingli Liu, Ciara Chun Chen, Ke Pan
Summary: Wearing facemasks is an important strategy to combat COVID-19, but used masks are becoming widespread plastic wastes in the oceans, potentially impacting marine organisms. A study found that the eukaryotic community on discarded masks was significantly different from that in the surrounding seawater. The diversity of colonizing organisms peaked initially and decreased over time, with diatoms forming biofilms on masks followed by other species.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Brittany N. Sprecher, Jochen M. Buck, L. Loraine Ropella, Annette Ramsperger, Peter G. Kroth, Norico Yamada
Summary: Endosymbiosis is a common phenomenon in the marine environment, but the process of how endosymbiotic partners evolve into an organism with new organelles is still largely unknown. Dinotoms, dinoflagellates with intermediate diatom plastids, are considered ideal models for studying organellogenesis. However, the lack of genetic transformation methods has limited the understanding of the host dinoflagellate-endosymbiotic diatom relationship. In this study, the researchers successfully developed genetic transformation methods for a diatom Nitzschia captiva, allowing them to visualize organelles and proteins inside the dinotom Durinskia capensis using fluorescence imaging techniques.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Environmental Sciences
Yuyao Song, Yiyan Guo, Haijiao Liu, Guicheng Zhang, Xiaodong Zhang, Satheeswaran Thangaraj, Jun Sun
Summary: This study conducted two cruises in the Bohai Bay (China) to investigate the phytoplankton community and its relation to water quality. The research found that the river inlet had severe eutrophication, while most of the open area was non-eutrophic. Phytoplankton populations respond differently to different aquatic environments and are controlled by more than two factors.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Rose Gregersen, Jamie D. Howarth, Javier Atalah, John K. Pearman, Sean Waters, Xun Li, Marcus J. Vandergoes, Susanna A. Wood
Summary: Lakes are important for ecosystem services and biodiversity, but cultural eutrophication remains a major threat to their health. The lack of long-term monitoring records limits our ability to manage lake eutrophication. This study developed a bio-indicator approach using diatom communities to infer trophic levels in lakes, and the results were consistent with monitoring data and land-use histories. However, recent shifts in diatom communities were not captured by traditional trophic level indices, highlighting the importance of new approaches in preventing the decline of lake ecosystems worldwide.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Marine & Freshwater Biology
Eyal Rahav, Ilana Berman-Frank
Summary: The temporal distributions of microphytoplankton were studied in the low nutrients low chlorophyll (LNLC) southeastern Mediterranean Sea over a span of 2 years. Diatoms and dinoflagellates were the main components, with diatoms mainly concentrated in the upper illuminated layers and dinoflagellates distributed patchily from the surface to 200m depth. During winter mixing, microphytoplankton abundance was higher than during the stratified summer months due to increased inorganic nutrient levels. Diatoms and dinoflagellates contribute minimally to the total vertical carbon flux in offshore waters, suggesting fast recycling of organic matter in the photic layer.
JOURNAL OF PLANKTON RESEARCH
(2023)
Article
Environmental Sciences
Rose Gregersen, John K. Pearman, Javier Atalah, Sean Waters, Marcus J. Vandergoes, Jamie D. Howarth, Georgia Thomson-Laing, Lucy Thompson, Susanna A. Wood
Summary: Anthropogenic eutrophication, a pressing issue for lakes globally, is difficult to manage due to limited monitoring records. This study presents a taxonomy-free diatom-based biomonitoring method using environmental DNA metabarcoding data, offering an accurate and automated alternative for eutrophication monitoring.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Marine
Sergey V. V. Vostokov, Larisa A. A. Pautova, Inna V. V. Sahling, Anastasia S. S. Vostokova, Alimurad A. A. Gadzhiev, Guy Petherbridge, Evgeny N. N. Lobachev, Behrooz Abtahi, Mehdi Ghodrati Shojaei
Summary: The study investigated the temporal variability of phytoplankton in the Middle Caspian using remote sensing data from 1998 to 2021 and field observations from 2004 to 2021. The results showed that autumn and winter were the main periods of phytoplankton production, while a stagnation period was observed in summer. Winter blooms were recurrently observed in the Middle Caspian Sea during the first months of each year. The composition of phytoplankton species varied in different seasons, with diatoms dominating in spring and autumn, and small flagellates and dinoflagellates dominating in summer.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Vladimir Silkin, Alexander S. Mikaelyan, Larisa Pautova, Alexey Fedorov
Summary: The study on the annual dynamics of phytoplankton in the NE Black Sea found that coccolithophores, small flagellates, and diatoms determined the abundance of phytoplankton, and chlorophyll-a showed peaks in spring and autumn. During the stratified water column period, strong winds led to an increase in chlorophyll-a, with different types of phytoplankton dominating in different wind conditions.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Marine & Freshwater Biology
Carlos F. Rodriguez-Gomez, Gabriela Vazquez, Vanesa Papiol, Ismael Marino-Tapia, Cecilia Enriquez
Summary: This study analyzed the relationship between oceanographic factors and the distribution of marine phytoplankton in oligotrophic conditions. The results showed that there is a significant stratification in the water column at one side of the island, while the other side has a milder stratification. The phytoplankton community structure also differs between the two sides, with differences in density and species composition between the surface and halocline layer.
Article
Marine & Freshwater Biology
Jacqueline S. Long, Chuanmin Hu, Lisa L. Robbins, Robert H. Byrne, John H. Paul, Jennifer L. Wolny
ESTUARINE COASTAL AND SHELF SCIENCE
(2017)
Article
Marine & Freshwater Biology
Jun Zhao, Chuanmin Hu, Jason M. Lenes, Robert H. Weisberg, Chad Lembke, David English, Jennifer Wolny, Lianyuan Zheng, John J. Walsh, Gary Kirkpatrick
Article
Environmental Sciences
Matthew Garrett, Jennifer Wolny, Earnest Truby, Cynthia Heil, Charles Kovach
MARINE POLLUTION BULLETIN
(2011)
Article
Plant Sciences
Jennifer L. Wolny, Todd A. Egerton, Sara M. Handy, Whitney L. Stutts, Juliette L. Smith, Edward B. Whereat, Tsvetan R. Bachvaroff, Darren W. Henrichs, Lisa Campbell, Jonathan R. Deeds
JOURNAL OF PHYCOLOGY
(2020)
Article
Environmental Sciences
James E. Ivey, Jennifer L. Wolny, Cynthia A. Heil, Susan M. Murasko, Julie A. Brame, Ashley A. Parks
Article
Environmental Sciences
Jaclyn E. Smith, Jennifer L. Wolny, Robert L. Hill, Matthew D. Stocker, Yakov Pachepsky
Summary: This study evaluated the performance of the random forest algorithm in predicting phytoplankton community structure in agricultural irrigation ponds. It found that the algorithm had better performance in predicting green algae populations. Moreover, models based on physicochemical parameters outperformed those based on organic constituent and nutrient parameters, but nutrient parameters improved model performance in predicting cyanobacteria data. The results of this study are important for water quality management and predicting phytoplankton community structure in agricultural irrigation ponds.
Article
Pharmacology & Pharmacy
Jerome P. Naar, Leanne J. Flewelling, Allison Lenzi, Jay P. Abbott, April Granholm, Henry M. Jacocks, Damon Gannon, Michael Henry, Richard Pierce, Daniel G. Baden, Jennifer Wolny, Jan H. Landsberg
Article
Environmental Sciences
Jan H. Landsberg, Sherwood Hall, Jan N. Johannessen, Kevin D. White, Stephen M. Conrad, Jay P. Abbott, Leanne J. Flewelling, R. William Richardson, Robert W. Dickey, Edward L. E. Jester, Stacey M. Etheridge, Jonathan R. Deeds, Frances M. Van Dolah, Tod A. Leighfield, Yinglin Zou, Clarke G. Beaudry, Ronald A. Benner, Patricia L. Rogers, Paula S. Scott, Kenji Kawabata, Jennifer L. Wolny, Karen A. Steidinger
ENVIRONMENTAL HEALTH PERSPECTIVES
(2006)
Article
Plant Sciences
A Kremp, M Elbrächter, M Schweikert, JL Wolny, M Gottschling
JOURNAL OF PHYCOLOGY
(2005)
Article
Limnology
Mary Ann Tiffany, Jennifer Wolny, Matthew Garrett, Karen Steidinger, Stuart H. Hurlbert
LAKE AND RESERVOIR MANAGEMENT
(2007)