Article
Ecology
Jiacheng Lv, Yuanyuan Lin, Zheng Zhao, Xiaohua Zhou
Summary: This study utilized eDNA metabarcoding to examine the seasonal and spatial distribution of phytoplankton in the Chai River, China. Significant differences in diversity, community structure, and representative functional groups were observed. These findings provide insights for the conservation and healthy management of phytoplankton in the river.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
Article
Ecology
You Ge, Xiaohong Gu, Zhigang Mao, Huihui Chen, Qingfei Zeng, Huiting Yang
Summary: This study conducted in Gaoyou Lake, China, investigated the environmental factors and phytoplankton in areas with different aquaculture intensities. Significant differences in diversity, biomass, and phytoplankton community structure were observed across areas. Total phosphorus, nitrogen to phosphorus ratio, and chemical oxygen demand were found to be important driving factors for spatial differences in phytoplankton functional groups. Aquaculture activity altered the phytoplankton community structure, resulting in a significant increase in biomass and diversity, especially for cyanobacteria. However, after the cessation of aquaculture, phytoplankton biomass and diversity could be significantly reduced and restored to natural levels. This study provides fundamental information for better understanding the impacts of aquaculture on lake eutrophication.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
Article
Ecology
Yang Xu, Haihua Cheng, Jilun Meng, Binpeng Xu, Xilian Li, Peijing Shen, Zhenyuan Huang, Qiang Gao
Summary: This study aimed to explore the quality and symbiotic microbial composition of Artemia nauplii in different areas. The hatching rate and symbiotic bacteria abundance of Artemia nauplii from Kulundan Lake were better than those from the other two areas. The research provides theoretical guidance for the regulation of symbiotic bacteria of Artemia nauplii to improve the feeding health of aquatic animal seedlings, reduce the occurrence of diseases, and purify water quality.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
Article
Ecology
James M. Haynes, David Sanderson-Kilchenstein, Jose A. Andres, Douglas M. Carlson, Jeremy J. Wright, Bryan R. Weatherwax, Jacques Rinchard
Summary: The Northern Sunfish species in New York State, USA was threatened after 1940, with the historic populations disappearing. However, a new population was found in 1974. Through genetic analysis, it was found that Northern Sunfish hybrids with other Lepomis species were present in the area. After stocking and sampling efforts from 2008 to 2018, it was concluded that the Northern Sunfish is extirpated in western New York State.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
Article
Limnology
Malgorzata Strzalek, Lech Kufel, Karina Apolinarska, Marcin Becher, Elzbieta Biardzka, Michal Brzozowski, Rafal Kielczewski, Grzegorz Kowalewski, Andrzej Pukacz, Michal Woszczyk, Mariusz Pelechaty
Summary: This study analyzed the fate of inorganic carbon accumulated by Chara and Nitellopsis in six Polish lakes. The results showed that the efficiency of CaCO3 release varied between different species of these two genera. The study also found that lake water properties and overwintering patterns influenced the final loss of CaCO3.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
J. Karlsson, H. A. Verheijen, D. A. Seekell, D. Vachon, M. Klaus
Summary: The current estimates of CO2 evasion from Arctic lakes are highly uncertain due to the lack of studies that integrate seasonal variability, particularly during the spring ice-melt period. This study quantified the annual CO2 evasion in 14 clear-water Arctic lakes in Northern Sweden using mass balance and high-frequency loggers. The findings highlight the significance of measuring CO2 exchange during ice-melt for accurately estimating CO2 evasion from Arctic lakes.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Limnology
Catherine C. Bannon, Elizabeth M. Mudge, Erin M. Bertrand
Summary: This study provides quantitative evidence of the photodegradation timescales of cobalamin forms in natural seawater and identifies potential degradation products, laying the foundation for a more quantitative understanding of the role of cobalamin in microbial communities and biogeochemical cycles.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Limnology
Brendan R. Carter, Jonathan D. Sharp, Andrew G. Dickson, Marta Alvarez, Michael B. Fong, Maribel I. Garcia-Ibanez, Ryan J. Woosley, Yuichiro Takeshita, Leticia Barbero, Robert H. Byrne, Wei-Jun Cai, Melissa Chierici, Simon L. Clegg, Regina A. Easley, Andrea J. Fassbender, Kalla L. Fleger, Xinyu Li, Macarena Martin-Mayor, Katelyn M. Schockman, Zhaohui Aleck Wang
Summary: The ocean carbonate system is crucial for regulating Earth's climate and marine ecosystems. Recent studies have shown discrepancies between calculated and directly measured carbonate chemistry variables, which affects efforts to measure and quantify the changing ocean carbon cycle. The Ocean Carbonate System Intercomparison Forum (OCSIF) aims to coordinate research to reduce uncertainties in measurable seawater carbonate system measurements and calculations and provide recommendations for progress.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Ecology
Xiuli Wang, Changyi Lu
Summary: Leaf traits and chloroplast structure have a direct impact on plant growth rates. Fast-growing species allocate more carbon to growth, while slow-growing species invest more in storage. The chloroplasts of Laguncularia racemosa can transport photosynthetic products to other organs of the plant in a timely manner, allowing the leaves to maintain high photosynthesis for rapid growth.
Article
Limnology
Eero Asmala, Matias Scheinin
Summary: Nearshore environments are often supersaturated with potent greenhouse gases methane and carbon dioxide, due to intense remineralization of organic carbon supply. In the coastal Baltic Sea, we measured the partial pressures of these gases in surface water and identified hot spots with high concentrations, which were linked to organic matter inputs.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
Article
Environmental Sciences
Carsten Meyer-Jacob, Andrew L. Labaj, Andrew M. Paterson, Daniel Layton-Matthews, John P. Smol
Summary: Atmospheric acid deposition has disrupted carbon cycling in lakes, leading to a decrease in dissolved organic carbon (DOC) loads. However, in lakes heavily affected by acid deposition, the organic carbon accumulation rate (OCAR) has not changed significantly. Unlike other northern forest lakes, these lakes have not experienced significant changes in organic carbon accumulation during recovery from acid deposition.
JOURNAL OF PALEOLIMNOLOGY
(2023)
Article
Ecology
A. Carneiro, L. S. Nascimento, M. A. Noernberg, C. S. Hara, A. T. R. Pozo
Summary: This study utilizes Convolutional Neural Networks to classify Portuguese man-of-war images extracted from social media posts, achieving excellent results. This is valuable for obtaining data on the occurrence and distribution of Portuguese man-of-war.
Article
Limnology
Raisa S. A. Chielle, Rozane V. Marins, Mariany S. Cavalcante, Luiz C. Cotovicz Jr
Summary: This study quantified the seasonal and spatial variability of CO2 partial pressure and water-atmosphere CO2 fluxes in the largest delta in the Americas. The results showed that the delta is an important source of CO2 to the atmosphere, but a decrease was observed during dry periods.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Jessica Gould, Justin B. Ries
Summary: Long-lived crustose coralline algae are important ecosystem engineers and environmental archives. The growth of C. compactum is influenced by light, temperature, and salinity, with temperature and salinity positively correlated with the calcification rate, while light level negatively correlated. The linear extension of the skeleton also varied under different treatment conditions. These findings highlight the potential impact of environmental changes on the growth of C. compactum.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Iris Madge Pimentel, Philipp M. Rehsen, Arne J. Beermann, Florian Leese, Jeremy J. Piggott, Sebastian Schmuck
Summary: Water temperature is a crucial factor in stream ecosystems, impacting species distribution, community composition, and ecological processes. Besides global warming, direct human impacts, like power plant cooling water and removal of riparian vegetation exposing the stream to the sun, also contribute to elevated water temperatures. However, most temperature studies in stream ecosystems have only been conducted in recirculating experimental systems, which fail to capture diurnal and seasonal variations in other environmental factors and do not allow for the entrainment of stream organisms. This research presents a heating module that allows for differential temperature regulation in a flow-through mesocosm system, providing a more realistic environment for stream ecological experiments.
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2023)
Article
Limnology
Ryuji Hanaishi, Kazuhisa A. Chikita
Summary: In this study, the authors refined the formulas for the light intensities in the blue coloration model of Ao-ike Pond in Aomori Prefecture, Japan. They used a homography transformation technique to obtain coordinates on the pond water surface from digital camera images and experimentally determined the sensitivity and white balance factors of the camera. The analysis of images taken in early spring and early summer revealed that the main coloration mechanism of the blue color in Ao-ike Pond is molecular scattering by water, with no contribution from Mie scattering.
Article
Limnology
Matthew R. Dunkle, J. Ryan Bellmore, Jason B. Fellman, Christopher C. Caudill
Summary: The melting cryosphere contributes to the heterogeneity of high latitude and montane rivers, but climate change poses a threat to its persistence. This study explores the effects of cryospheric loss on the diversity, structure, and functional traits of aquatic invertebrate communities in southeast Alaska streams.
LIMNOLOGY AND OCEANOGRAPHY
(2023)
Article
Limnology
Yunzhou Li, Zhiteng Gao, Shoutu Li, Suiping Qi, Xiaoyu Tang
Summary: In this study, a model for predicting the far wake velocity field of wind turbines under yaw conditions was proposed, and its accuracy was validated through experiments. Additionally, a prediction-correction method was developed to solve the wake velocity field, and the model was found to be computationally efficient compared to other methods, making it suitable for engineering calculations.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2023)
Article
Limnology
Ting Wu, Xiaoman Hu, Wenlong Xu, Yang Du, Jiong Chen
Summary: The study found that the supplementation of inactivated L. plantarum Ep-M17 effectively improved the growth performance, gut microbiota, immune response, and disease resistance of P. vannamei shrimp. The inactivated Ep-M17 promoted body weight gain, increased immune protection, improved the density and distribution of microvilli in the intestines, enhanced the abundance of B and R cells in the hepatopancreas, and stimulated the expression of immune-related genes. It also increased bacterial diversity in the gut and promoted the abundance of specific flora, improving shrimp's metabolism and immunity.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2023)
Article
Ecology
Maxwell G. Gebhart, Ryan M. Wersal
Summary: The flowering rush, a type of invasive plant, has been found to grow extensively along the United States-Canadian border. However, there is a lack of ecological research on the diploid cytotype of this plant. By analyzing climatic and soil variables, it was discovered that precipitation is a crucial factor influencing the diploid flowering rush populations and global site models. Moreover, it is predicted that the diploid flowering rush will expand into unsuitable habitats, highlighting the need for further monitoring and prevention measures.
JOURNAL OF FRESHWATER ECOLOGY
(2023)
