Article
Environmental Sciences
Zhuyin Tong, Lingqi Ma, Shujie Cai, Lei Wang, Wupeng Xiao, Bangqin Huang, Edward A. Laws
Summary: This study investigates the dynamics and drivers of phytoplankton biomass and community composition in the Pearl River plume-coastal upwelling system. The researchers found that phytoplankton biomass was lower in the plume and diatoms were the dominant group in upwelled water. In contrast, diatoms and Synechococcus were co-dominant in the plume, indicating niche differentiation.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Environmental Sciences
Stephen D. Archer, Laura C. Lubelczyk, Moriah Kunes, Kathryn McPhee, Walter Dawydiak, Michael Staiger, Kevin M. Posman, Nicole J. Poulton
Summary: A new saturation approach based on functional response was developed to investigate the predator-prey interactions in planktonic communities. The method used laboratory cultures and surrogate prey to estimate the growth and mortality rates of populations. The results showed that this approach can be used to study coastal and non-coastal waters as well as different size classes of prey.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Tiffany Chin, Laura Beecraft, Michael S. Wetz
Summary: This study compared environmental conditions and phytoplankton biomass/composition in three Texas estuaries with different freshwater inflow regimes to understand the impact of freshwater inflow on phytoplankton communities. The results showed that despite differences in freshwater inflow, salinity, and nutrient regimes, differences in phytoplankton community composition were relatively small, indicating the influence of other factors.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Laura Beecraft, Michael S. Wetz
Summary: This study quantified the variability in environmental conditions and phytoplankton biomass over an 8-year period in a low-inflow estuary, and found that bloom frequency was higher at high salinity conditions. Different salinity levels also resulted in different bloom compositions and conditions. This provides insight into understanding and predicting water quality and phytoplankton dynamics under future climate change.
ESTUARIES AND COASTS
(2023)
Article
Environmental Sciences
Nicole Schmidt, Timothy Dellapenna, Peng Lin
Summary: The study found that the age and proportion of newly suspended sediments in the bay vary with location, potentially being carried away by cold fronts. Suspended sediments with longer residence times may increase the exposure time of living organisms to contaminants.
FRONTIERS IN MARINE SCIENCE
(2021)
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
Green & Sustainable Science & Technology
Seweryn Zielinski, Celene B. Milanes, Elena Cambon, Ofelia Perez Montero, Lourdes Rizo, Andres Suarez, Benjamin Cuker, Giorgio Anfuso
Summary: This paper introduces a new integrated method for landscape assessment (IMLA) that characterizes landscape value and establishes effective management practices through the integration of multiple factors. The systematic and holistic approach of IMLA includes both inductive and deductive reasoning, with four steps to establish landscape values and develop management strategies.
Article
Environmental Sciences
Sara Zeidan, Jennifer Walker, Brent G. T. Else, Lisa A. Miller, Kumiko Azetsu-Scott, Brett D. Walker
Summary: The Canadian Arctic is warming at three times the rate of the rest of the planet. This study examines the effects of climate change on the Arctic marine carbon cycle by analyzing stable carbon and radiocarbon values of dissolved inorganic carbon collected in Baffin Bay. The results suggest a residence time of 360-690 years for deep water in Baffin Bay.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Jilian Xiong, Jian Shen, Qubin Qin, Jiabi Du
Summary: Water exchange in Chesapeake Bay is influenced by external forcings such as river discharge and wind, with different regions within the bay exhibiting varying control mechanisms on the exchange. The relationship between inflow and outflow is complex, with both increasing and decreasing processes involved, and there is also locally enhanced water exchange due to irregular geometry and shoaling in the channel bathymetry.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Environmental Sciences
Chung-Chi Chen, Jih-Terng Wang, Chih-Yen Huang, Hung-Yen Hsieh, Kwee Siong Tew, Pei-Jie Meng
Summary: Algal blooms have had significant global impacts on marine ecosystems, aquaculture, recreational activities, and human health. Therefore, there is an urgent need for indices to evaluate seawater nutritional status for predicting algal blooms. This study developed a real-time trophic state index (RTSI) using a long-term water quality monitoring dataset from Dapeng Bay, Southern Taiwan. The RTSI, which is simple and does not require complicated measurements, showed sensitivity to changes in seawater quality and can aid managers in monitoring and managing algal blooms.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Yujian Wen, Guodong Zhang, Yuyao Song, Guicheng Zhang, Jun Sun
Summary: The dilution experiment technique was employed in two cruises conducted in July-August and October-November 2020, with 14 stations in total. The study comprehensively investigates the grazing impact of microzooplankton on phytoplankton in the interior of Bohai Bay. Spatially and seasonally, both the microzooplankton grazing rates (m) and phytoplankton growth rates (& mu;(0)) were significantly higher in summer compared to autumn, and the growth rate of phytoplankton was positively correlated with temperature. The ratio of microzooplankton grazing rate to phytoplankton growth rate (m/& mu;(0)) showed no significant spatial and seasonal differences, indicating a consistent daily consumption of primary production by microzooplankton in the two seasons. Therefore, the research highlights a close coupling between microzooplankton grazing and phytoplankton growth in the Bohai Bay.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Ecology
Najat Ziyadi
Summary: In this paper, a discrete-time nutrients-phytoplankton-oysters (NPO) model is introduced to describe the interactions of nutrients, phytoplankton and oysters in a bay ecosystem. Sensitivity analysis is used to study the impact of human and environmental factors on the model. Examples show that some human activities and environmental factors can generate phytoplankton blooms with oscillations in oysters population and nutrients level by forcing the interior equilibrium to undergo a Neimark-Sacker bifurcation.
JOURNAL OF BIOLOGICAL DYNAMICS
(2023)
Review
Environmental Sciences
Ling Zhang, Lanlan Xiong, Jinlong Li, Xiaoping Huang
Summary: The study found significant changes in the ecosystems of Jiaozhou Bay and Daya Bay over the past 30 years, including increased nutrients, phytoplankton abundance, and shifts in macrobenthos. These changes are partially attributed to the influence of anthropogenic activities.
MARINE POLLUTION BULLETIN
(2021)
Article
Marine & Freshwater Biology
Alexandre Buzzani, Rodolfo Paranhos, Marianne P. Mello, Fernanda Abreu, Anderson Aquino dos Santos, Rafael Martins, Kayo Bianco, Maysa Mandetta Clementino, Fernando H. Pulgati, Anderson de Souza Cabral
Summary: This study explores the impact of rainfall regime and estuary hydrodynamics on the ecological patterns of picocyanobacteria in Guanabara Bay. The results show that rainfall influences water quality and microbiology, making the inner estuarine regions more similar to tributaries' environment. Additionally, the abundance of phycocyanin-rich and phycoerythrin-rich picocyanobacteria is associated with riverine and marine waters, respectively.
Article
Environmental Sciences
Aiqin Han, Shuh-Ji Kao, Wenfang Lin, Qiaoyun Lin, Lili Han, Wenbin Zou, Ehui Tan, Yao Lai, Guangmao Ding, Hui Lin
Summary: This study examines the spatiotemporal distribution of dissolved and particulate nutrients in Sansha Bay, highlighting seasonal variations and factors influencing nutrient dynamics, with implications for other coastal bays facing similar pressures from intensive aquaculture, riverine inputs, and coastal waters.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Plant Sciences
R. Wayne Litaker, Patricia A. Tester, Mark W. Vandersea
JOURNAL OF PHYCOLOGY
(2019)
Article
Marine & Freshwater Biology
Lisbet Diaz-Asencio, Mark Vandersea, Nicolas Chomerat, Santiago Fraga, Rachel J. Clausing, R. Wayne Litaker, Donaida Chamero-Lago, Miguel Gomez-Batista, Angel Moreira-Gonzalez, Patricia Tester, Carlos Alonso-Hernandez, Marie-Yasmine Dechraoui Bottein
Article
Multidisciplinary Sciences
D. Ransom Hardison, William C. Holland, Robert D. Currier, Barbara Kirkpatrick, Richard Stumpf, Tracy Fanara, Devin Burris, Andrew Reich, Gary J. Kirkpatrick, R. Wayne Litaker
Article
Food Science & Technology
Jennifer R. McCall, W. Christopher Holland, Devon M. Keeler, D. Ransom Hardison, R. Wayne Litaker
Article
Marine & Freshwater Biology
Patricia A. Tester, R. Wayne Litaker, Elisa Berdalet
Article
Marine & Freshwater Biology
Mark Vandersea, Patricia Tester, Kris Holderied, Dominic Hondolero, Steve Kibler, Kim Powell, Steve Baird, Angela Doroff, Darcy Dugan, Andrew Meredith, Michelle Tomlinson, R. Wayne Litaker
Article
Marine & Freshwater Biology
Caroline Van Hemert, Sarah K. Schoen, R. Wayne Litaker, Matthew M. Smith, Mayumi L. Arimitsu, John F. Piatt, William C. Holland, D. Ransom Hardison, John M. Pearce
Article
Food Science & Technology
Lisbet Diaz-Asencio, Rachel J. Clausing, Mark Vandersea, Donaida Chamero-Lago, Miguel Gomez-Batista, Joan I. Hernandez-Albernas, Nicolas Chomerat, Gabriel Rojas-Abrahantes, R. Wayne Litaker, Patricia Tester, Jorge Diogene, Carlos M. Alonso-Hernandez, Marie-Yasmine Dechraoui Bottein
Article
Multidisciplinary Sciences
Li Keat Lee, Zhen Fei Lim, Haifeng Gu, Leo Lai Chan, R. Wayne Litaker, Patricia A. Tester, Chui Pin Leaw, Po Teen Lim
SCIENTIFIC REPORTS
(2020)
Article
Veterinary Sciences
Caroline Van Hemert, Robert J. Dusek, Matthew M. Smith, Robert Kaler, Gay Sheffield, Lauren M. Divine, Kathy J. Kuletz, Susan Knowles, Julia S. Lankton, D. Ransom Hardison, R. Wayne Litaker, Timothy Jones, Hillary K. Burgess, Julia K. Parrish
Summary: Between 2014 and 2017, annual widespread seabird mortality events in the Bering and Chukchi seas were likely linked to environmental changes such as harmful algal blooms and reduced sea ice. However, the direct cause of death among the birds examined in this study was starvation, rather than neurotoxins produced by the harmful algal blooms.
JOURNAL OF WILDLIFE DISEASES
(2021)
Article
Environmental Sciences
Timothy T. Wynne, Sachidananda Mishra, Andrew Meredith, R. Wayne Litaker, Richard P. Stumpf
Summary: Satellite imagery has been utilized for over twelve years to monitor and assess Harmful Algal Blooms, specifically cyanobacterial blooms in Lake Erie in the USA and Canada, with a key algorithm called the cyanobacterial index (CI) to measure chlorophyll levels. The monitoring system began with the European Space Agency's (ESA) MERIS sensor and transitioned to NASA's MODIS sensor after 2012, with the introduction of the OLCI sensor in 2016 as a replacement for MERIS. This integrated technique allows for intercalibration of the CI algorithm from MODIS to MERIS and OLCI, providing a continuous record of cyanobacterial bloom activity.
Article
Marine & Freshwater Biology
Steven R. Kibler, R. Wayne Litaker, Julie A. Matweyou, D. Ransom Hardison, Bruce A. Wright, Patricia A. Tester
Summary: This study examined seasonal variation in paralytic shellfish toxin concentrations in butter clams collected from three communities in the Kodiak Islands, Alaska. The results showed that toxin levels remained high throughout the year, with specific tissue removal not being an effective strategy for reducing overall toxin levels in butter clams.
Article
Chemistry, Medicinal
Thomas Yon, Manoella Sibat, Elise Robert, Korian Lhaute, William C. Holland, R. Wayne Litaker, Samuel Bertrand, Philipp Hess, Damien Reveillon
Summary: Ciguatera poisoning is caused by ciguatoxins produced by dinoflagellates, but the specific species responsible for ciguatoxin production in the Atlantic Ocean remain unidentified. Studies suggest that G. excentricus may be a potential toxin producer.
Article
Multidisciplinary Sciences
Richard P. Stumpf, Yizhen Li, Barbara Kirkpatrick, R. Wayne Litaker, Katherine A. Hubbard, Robert D. Currier, Katherine Kohler Harrison, Michelle C. Tomlinson
Summary: Blooms of toxic dinoflagellate K. brevis pose a serious threat to coastal Southwest Florida, with significant health and economic impacts. This study developed indices to assess bloom severity and respiratory irritation, providing useful tools for future scientific studies and decision-making.
Article
Multidisciplinary Sciences
Brittany M. Ott, R. Wayne Litaker, William C. Holland, Charles F. Delwiche
Summary: This study examined the utility of multigene versus rDNA-based phylogenies for distinguishing dinoflagellate species. The results showed that both D1-D3 and ITS/5.8S rDNA phylogenies were generally successful in identifying Gambierdiscus species. Multigene phylogenies showed more accuracy in determining relationships above the species level.