Article
Environmental Sciences
O. Hernandez-Ramirez, A. Thompson
Summary: Water companies in the UK are facing stricter phosphorus discharge consents and there are variations in the design guidelines for chemical phosphorus removal. This results in disparities in the removal efficiency and chemical consumption.
WATER AND ENVIRONMENT JOURNAL
(2023)
Article
Ecology
Yirga Enawgaw, Solomon Wagaw, Assefa Wosnie, Kassahun Tessema
Summary: This paper investigates the abundance and composition of zooplankton in Lake Arekit, as well as the various environmental factors. The study finds that zooplankton abundance varies significantly between seasons, with higher abundance during the rainy season. The increase in water temperature and nutrient levels in the lake also affects zooplankton abundance. The dominant zooplankton in the lake are large-bodied copepoda and cladocera, while small-bodied rotifers dominate the zooplankton diversity.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
Article
Limnology
Margaret L. Estapa, Colleen Andrea Durkin, Wayne H. Slade, Christine L. Huffard, Sean P. O'Neill, Melissa M. Omand
Summary: This study developed empirical models for predicting particulate organic carbon flux from optical sediment trap (OST) measurements and intercalibrated different sensor designs using a global field data set. The results support the expansion of OST-based gravitational carbon flux measurements.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Cheng-Xuan Li, Bao-Dong Wang, Kan Chen, Gui-Peng Yang, Jian-Fang Chen, Li-Na Lin, Zi-Cheng Wang
Summary: The enhanced inflow of warm and nutrient-rich Pacific Water through the Bering Strait into the Arctic Ocean has significant impacts on the biogenic sulfur cycle and ecosystem in the subarctic-arctic region. This study highlights the importance of the enhanced Pacific inflow in driving variability in dimethylsulfide (DMS) concentrations. The increased Pacific inflow leads to expansion of high-DMS regions and influences seawater warming, ice edge retreat, and sea ice-free areas in the Chukchi Sea.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
John R. Gardner, Martin W. Doyle, Scott H. Ensign, David M. Kahler
Summary: Vertical motion plays a crucial role in sunlight exposure in aquatic environments. A simple model is developed to estimate the depth that contributes the most sunlight exposure (effective depth) and the depth that produces the same total sunlight exposure as a moving particle (functional depth). Field measurements confirm the validity of the model.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Limnology
Jinqiang Guo, Eric P. Achterberg, Yuan Shen, Huamao Yuan, Jinming Song, Jin Liu, Xuegang Li, Liqin Duan
Summary: Compound-specific isotope analysis of amino sugars in marine organic matter can provide insights into their metabolic sources and transformation processes. This study compared the stable carbon isotope patterns of amino sugars in marine phytoplankton and heterotrophic bacteria, and examined their variations during organic matter degradation experiments. The results revealed differences in the synthesis pathways of amino sugars between bacteria and phytoplankton, as well as the preferential use of isotopically light organic compounds by bacteria for muramic acid synthesis. The findings suggest that amino sugar delta 13C can be used as a new tool to track heterotrophic processes of marine organic matter.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Blazenka Gasparovic, Ivna Vrana, Sanja Frka, Daniela Maric Pfannkuchen, Ivan Vlasicek, Tamara Djakovac, Ingrid Ivancic, Mirta Smodlaka Tankovic, Andrea Milinkovic, Lana Flanjak, Frederic Chaux, Tihana Novak, Nikola Medic, Jelena Godrijan
Summary: Marine life is threatened by global warming, leading to increased stratification and depletion of phosphorus and nitrogen. Research suggests that under conditions of phosphorus scarcity, smaller plankton cells with higher phospholipid content dominate. This is due to the cell geometry and the presence of saturated fatty acids in stressful conditions.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Alex Barth, Rod Johnson, Joshua Stone
Summary: Diel vertical migration (DVM) is a common phenomenon in aquatic environments, where zooplankton migrate to deeper waters to avoid predation. This study investigates hypotheses related to morphology and DVM using in situ imaging and introduces a robust method for quantifying DVM. The results show that larger and darker copepods have a larger DVM signal.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Hugo Duarte Moreno, Sebastian Rokitta, Nelly Tremblay, Maarten Boersma, Elisabeth Gross, Helena C. L. Klip, Karen H. Wiltshire, Cedric L. Meunier
Summary: This study investigates the individual and combined effects of temperature, pCO(2), and N:P ratio on the physiology of the diatom Phaeodactylum tricornutum. The results show that temperature is the most influential factor, causing oxidative stress and lower activity of antioxidant enzymes. Additionally, higher photosynthetic rate, lower dark respiration rate, and higher DOC exudation were observed under warmer conditions and higher pCO(2), resulting in cells with lower carbon content.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Hamad J. Alazmi, Gordon Mitchell, Mark A. Trigg
Summary: Household water demand in Kuwait has increased significantly in recent decades, leading to negative impacts on water resources and the environment, as well as substantial economic costs. Through a Business-As-Usual (BAU) scenario forecast, this study predicts a 45% increase in household water demand by 2050 in Kuwait, requiring substantial investments to meet the demand. The findings of this study serve as a warning to policymakers, emphasizing the importance of reducing water demand.
WATER AND ENVIRONMENT JOURNAL
(2023)
Article
Limnology
Zhe-Xuan Zhang, Jiwei Li, Hongxuan Lu, Huan Yang, Yige Zhang, Yongjie Tang, Meiyan Fu, Xiaotong Peng
Summary: This study reveals the unique stable carbon isotopic composition of brGDGTs in cold seeps, indicating their origin from methane metabolizing communities. A machine-learning model is developed to identify seep-derived brGDGT signals, and it suggests potential methane emission events in a paleorecord.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Hanbo Deng, Hongjian Wang, Zhiming Guo, Jiajin Li, Ran Liao, Hening Li, Qiang Li, Hui Ma
Summary: This article introduces an in situ prototype based on polarized light scattering, which is able to classify suspended particles in seawater and calculate their relative proportions. The experimental results show that the prototype has an accuracy larger than 85% in identifying sediments, microplastics, and phytoplankton, and monitoring their temporal variations.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Kiara Lange, Stephanie Reynaud, Jasper M. de Goeij, Christine Ferrier-Pages
Summary: This study investigates the ability of two octocoral species to feed on dissolved organic matter (DOM) and compares it to hexacorals. The results show that corals are net producers of DOM at ambient concentrations but become net consumers when supplemented with DOM. Coral species that maintain or increase DOM uptake rates at high temperatures are more resilient to heat stress.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Environmental Sciences
Colin J. Courtney-Mustaphi, Enrica Steiner, Stefanie von Fumetti, Oliver Heiri
Summary: Subfossil remains of aquatic invertebrates found in lacustrine sediments provide valuable information for paleoenvironmental studies. The lack of visual keys or documentation sources has limited the use of certain ecologically important invertebrate groups in paleoenvironmental research. This article presents a collection of digital photomicrographs of pre-identified aquatic invertebrate specimens, showcasing their preserved structures and providing insights for identification.
JOURNAL OF PALEOLIMNOLOGY
(2023)
Article
Limnology
Charlie J. G. Loewen, Donald A. Jackson
Summary: Urbanization leads to environmental changes that impact biodiversity and physical mixing in ponds, which can result in risks to ecosystem functioning.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Limnology
Aidan Mora-Teddy, Gerry P. Closs, Christoph D. Matthaei
Summary: Freshwaters are impacted by various pollutants, including emerging contaminants such as microplastics. This study proposes a novel sampling method, invertebrate kick-netting, for long-term and standardized monitoring of microplastics. The results show that kick-netting can capture higher concentrations of microplastics compared to conventional sampling methods, making it a potentially time- and cost-efficient tool for monitoring microplastic pollution.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Environmental Sciences
Mojdeh Lotfi, Habibollah Younesi, Bita Roshanravan, Nader Bahramifar, Maxime Pontie, Mehri Shabani, Meisam Tabatabaei, Maryam Nazerifar
Summary: This study confirmed the efficacy of modified electrode microbial fuel cells in removing COD and generating electricity using wastewater from industrial meat processing. Coating CuO on the carbon cloth electrodes significantly improved the electrochemical performance by reducing charge transfer resistance. These findings have significant implications for sustainable electricity production and improving environmental quality.
WATER AND ENVIRONMENT JOURNAL
(2023)
Article
Environmental Sciences
Elizabeth Bunin, Chengjun Zhang, Gonen Sharon, Steffen Mischke
Summary: Sedimentary records from archeological sites provide valuable insights into the environmental conditions of ancient humans. This study focuses on the sediment sequences found in Jordan River Dureijat in Israel's Hula Valley, which reveal the changes in Paleolake Hula from the Last Glacial Maximum to the start of the Holocene.
JOURNAL OF PALEOLIMNOLOGY
(2023)
Article
Ecology
Md. Anwar Nawaz, Kandhasamy Sivakumar, Gurunathan Baskar
Summary: This study examined the seasonal variation in the size of calanoid copepods in a tropical coast of India, and found that the size of copepods showed a clear seasonal pattern, with smaller size during summer months and larger sizes during the monsoon season. The size variation was negatively correlated with temperature, and positively correlated with dissolved oxygen, pH, salinity, and chlorophyll-a concentration. Certain species showed more pronounced changes in body size indicating species-specific responses to environmental fluctuations. These findings contribute to our understanding of the ecological processes and global warming that determine copepod size variation in coastal ecosystems.
Article
Limnology
Robin R. Rohwer, Robert Ladwig, Paul C. Hanson, Jake R. Walsh, M. Jake Vander Zanden, Hilary A. Dugan
Summary: Species invasions can alter the structure and biogeochemistry of lakes, leading to changes in lake phenology.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
