Article
Environmental Sciences
Su-mi Kim, Hyun-su Kim
Summary: This study investigated the variations in water quality parameters and trophic status of a multipurpose reservoir in response to changing intensity of monsoon rain. The reservoir generally maintained mesotrophic conditions, with phosphorus concentrations not showing strong correlations with precipitation. Phytoplankton growth was mainly limited by zooplankton grazing, and the intensity of the monsoon season affected cell concentrations and community structure in the reservoir.
Article
Environmental Sciences
Deviram Garlapati, Kumaraswami Munnooru, Ranga Rao Vinjamuri, Ramu Karri, Venkata Ramanamurthy Mallavarapu
Summary: The study observed the phytoplankton community structure and its relationship with environmental variables in the Pulicat Lagoon on the east coast of India. Different phytoplankton taxa were found in different seasons and sectors, with salinity and seasonal nutrient stoichiometry playing significant roles in regulating the community structure and distribution patterns.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Bo Lan, Liping He, Yujing Huang, Xianhua Guo, Wenfeng Xu, Chi Zhu
Summary: The study conducted in the hinterland of the Three Gorges Reservoir area in Wanzhou City, China, revealed that the species and quantity of zooplankton varied in different seasons and water bodies, correlating with water quality indicators such as nitrate, ammonia, and temperature. The community structure of zooplankton was influenced by nutrient levels and periodic water level fluctuations, with climate change and human activities potentially causing a reduction in zooplankton individual size and restructuring of the food chain.
Article
Environmental Sciences
Yongao Lu, Youcai Tuo, Linglei Zhang, Xiangying Hu, Bin Huang, Min Chen, Zhenghe Li
Summary: The excessive proliferation of phytoplankton in drinking water reservoirs, leading to algal blooms, poses a serious threat to water quality, ecosystems, water safety, and human health. This study conducted an 8-month monitoring of vertical phytoplankton and its influencing factors in front of the outlet of a drinking water reservoir. The results showed that phytoplankton biomass decreased with increasing water depth, but still reached the algal blooms warning threshold near the outlet. Thermal intensity and excessive TN and TP were identified as the major driving factors for phytoplankton growth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Ecology
Xin-Feng Zhao, Wen-Sheng Shu, Yi-Qi Hao
Summary: Research suggests that seasonal climate fluctuations play a role in maintaining high alpha-diversity in soil bacterial communities. Soil bacterial alpha-diversity is positively correlated with seasonal variations of temperature and precipitation, with weak but significant positive effects observed in different datasets.
Review
Oceanography
Tatsuya Sakamoto, Taketoshi Kodama, Sachiko Horii, Kazutaka Takahashi, Atsushi Tawa, Yosuke Tanaka, Seiji Ohshmio
Summary: Understanding the variability in stable isotope ratios of small pelagic fish is crucial for isotopic studies of marine predators. This study investigated the variability of Japanese sardine isotope ratios in the western North Pacific and its marginal seas, and found that baseline variations are the main determinant of sardine isotope composition. The study also revealed that adult sardines showed less geographic variation compared to larvae and juveniles, and the isotope ratios of juvenile sardines in the Pacific offshore reflected the baseline in the neighboring southern region.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Microbiology
Maria Hamilton, Martina Mascioni, Elisabeth Hehenberger, Charles Bachy, Charmaine Yung, Maria Vernet, Alexandra Z. Worden
Summary: Our study in the Andvord fjord in the West Antarctic Peninsula revealed distinct seasonal patterns in protistan molecular diversity. We also discovered a novel phytoplankton species with proliferation patterns linked to temperature shifts and established evolutionary relationships between this novel lineage and other algae. The study provides critical knowledge on how specific phytoplankton at the base of Antarctic food webs respond to warming and on overall diversity and community structure in this changing polar environment.
Article
Multidisciplinary Sciences
Hana Melese, Habte Jebessa Debella
Summary: This study investigated the spatiotemporal variations of physicochemical properties of four Ethiopian soda lakes. The results showed significant differences in physicochemical factors between seasons, with lakes Arenguade and Beseka experiencing a decrease in conductivity, alkalinity, and salinity compared to historical data. The findings can be used for long-term planning of water resources management and mitigation strategies in the Ethiopian Rift Valley.
Article
Biotechnology & Applied Microbiology
Bogolitsyn Konstantin, Parshina Anastasia, Ivanchenko Nikolay, Polomarchuk Daria
Summary: The study analysed the changes in chemical composition of macroalgae in the White Sea during the growing season. It found increased levels of polyphenols, pigments, and saturated fatty acids, likely due to solar activity, photosynthesis, and higher seawater temperature. August was identified as the optimal month to harvest macroalgae with valuable chemical compounds, and specific species were recommended for isolating different components. Compared to macroalgae from Europe, the Far East, and Southeast Asia, the White Sea species showed high potential as a new source of lipophilic substances and cellulose.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Environmental Sciences
Majd Muwafaq Yaqoob, Csaba Berta, Laszlo Jozsef Szabo, Gyorgy Devai, Szilard Szabo, Sandor Alex Nagy, Istvan Bacsi, Alexandra Simon, Janos Nagy, Imre Somlyai, Eva Acs, Istvan Grigorszky
Summary: Our study investigated differences among zones of an oxbow lake with different land uses based on physico-chemical variables and dominant algal plankton species. We found significant variations in chemical and physical properties of the water, as well as characteristic algal species, in open water zones, areas with large macrovegetation coverage, and transition zones.
Article
Environmental Sciences
Emmanuel Devred, Tim Perry, Philippe Massicotte
Summary: This study investigated the seasonal and inter-annual absorption properties of phytoplankton and non-algal particulate matter in the Northwest Atlantic over a 20-year period. Significant differences in bio-optical properties were observed among three oceanic regimes, and a new index called PAAW was introduced to provide information on phytoplankton biomass and assemblage in a straightforward manner.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Xueyan Yin, Guanghan Yan, Xing Wang, Daizhong Huang, Liqiang Li
Summary: The water quality of Dongting Lake has improved in recent years, with increased dissolved oxygen concentration and decreased concentrations of various pollutants. The density and composition of phytoplankton in the lake have also changed, influenced by multiple factors.
Article
Thermodynamics
Hai-Bao Chen, Ling-Ling Pei, Yu-Feng Zhao
Summary: This research aims to forecast seasonal fluctuations in electricity consumption and usage efficiency of industrial sectors, while identifying the impacts of COVID-19. A new model, AWBO-DGGM(1,1), is proposed to analyze the data from 2013 to 2020 in Zhejiang Province, China. The results show that the model can accurately predict seasonal variations and the impact of COVID-19 on industrial systems.
Article
Environmental Sciences
Channing J. Prend, M. G. Keerthi, Marina Levy, Olivier Aumont, Sarah T. Gille, Lynne D. Talley
Summary: Primary productivity in the Southern Ocean is crucial for global biogeochemical cycles. This study reveals that year-to-year variations in surface chlorophyll (SChl), a proxy for phytoplankton biomass, are mainly influenced by sub-seasonal fluctuations, rather than low-frequency climate variability.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Haifa Madyouni, Viviana Almanza, Sihem Benabdallah, Celia Joaquim-Justo, Mohamed Salah Romdhane, Hamadi Habaieb, Jean-Francois Deliege
Summary: This study evaluates the environmental parameters, phytoplankton community structure, and trophic status of the Joumine reservoir in North Tunisia using multivariate statistical methods and redundancy analysis (RDA) with the Trophic State Index (TSI) and Trophic State Index deviation (TSID). The findings indicate that the reservoir is eutrophic, and water nutrient variations are primarily due to contamination from point and non-point sources, as well as natural processes. The outcomes of this study can provide valuable information for the management of the Joumine reservoir.
