Integration of Fluorescence Spectroscopy into a Photobioreactor for the Monitoring of Cyanobacteria

Biosensors, Год журнала: 2025, Номер 15(3), С. 128 - 128

Опубликована: Фев. 20, 2025

Phytoplankton are essential to aquatic ecosystems but can cause harmful algal blooms (HABs) that threaten water quality, life, and human health. Developing new devices based on spectroscopic techniques offers a promising alternative for rapid accurate monitoring of environments. However, phytoplankton undergo various physiological changes throughout their life cycle, leading alterations in optical properties, such as autofluorescence. In this study, we present modification low-cost photobioreactor designed implement fluorescence spectroscopy analyze the evolution spectral signals during growth cycles. This device primarily facilitates characterization autofluorescence, providing valuable information development future detecting phytoplankton. Additionally, real-time testing was performed cyanobacterial cultures, where autofluorescence were observed under different conditions. work demonstrates cost-effective implementation within photobioreactor, offering preliminary analysis functional field ecosystems.

Язык: Английский

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Climate Change Drives Long‐Term Spatiotemporal Shifts in Red Noctiluca scintillans Blooms Along China's Coast

Molecular Ecology, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

ABSTRACT Climate change has significantly altered the spatiotemporal distribution and phenology of marine organisms, yet long‐term trends mechanisms driving these changes remain insufficiently understood. In this study, we analysed historical Noctiluca scintillans bloom data from coastal China (1933, 1952, 1981–2023), sea surface temperature (SST) records past 40 years, 509 field samples using Single Molecule Real‐Time (SMRT) sequencing (2019–2024). Our results indicate that SST is primary driver N. blooms, exhibiting a nonlinear unimodal correlation. Long‐term warming caused northward shift in locations, aligning with 21.9°C–22.7°C isotherms, as reflected by increasing average latitudes occurrences. Over 4 decades, frequency duration have followed an overall trend, displaying approximate 10‐year cyclical pattern. Ocean also contributed to earlier initiation, extended peak periods delayed termination, shaping dynamics blooms. SMRT confirmed local populations persist year‐round, serving latent seed sources can rapidly when environmental conditions become favourable. These findings provide critical insights into harmful algal blooms context climate lay foundation for future ecological research.

Язык: Английский

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Eco-Friendly Algicidal Potential of Zanthoxylum bungeanum Leaf Extracts: Extraction Optimization and Impact on Algal Growth

Microorganisms, Год журнала: 2025, Номер 13(4), С. 760 - 760

Опубликована: Март 27, 2025

Zanthoxylum bungeanum leaves were regarded as a waste byproduct for long period of time, yet their functional components presented potential novel antimicrobial agents. However, effectiveness in controlling algal blooms remains unexplored. In this study, the inhibition effect Z. leaf extracts on was firstly demonstrated, and flavonoid profiles extract identified using non-targeted metabolomics analysis. Then, response surface methodology performed extraction to further evaluate feasibility industrial application. Specifically, effects cell density, photosynthetic efficiency, antioxidant activity Tetrodesmus obliquus investigated. The results showed that yield flavonoids from reached 6.85% under optimized conditions an ultrasonic power 600 W, LSR 20:1 mL/g, ethanol concentration 77.5%, duration 18 min, temperature 80 °C, which significantly decreased Fv/Fm PIabs values by 54.60% 98.22%, respectively, after exposure T. 40.0 mg/L 66 h. Meanwhile, treatment with at dose generated T-AOC 4.0 times higher than control without addition extracts. These suggest could be used development potentially effective biological algicides. Our study provides data support algicides realizes resource application waste, achieving synergistic outcome both economic ecological benefits.

Язык: Английский

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Early Warning on the Potential Harmful Algal Bloom Species in Beibu Gulf of South China Sea under the background of Climate Change and Human Activity

Environmental Research, Год журнала: 2025, Номер unknown, С. 121516 - 121516

Опубликована: Апрель 1, 2025

Язык: Английский

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U-shaped deep learning networks for algal bloom detection using Sentinel-2 imagery: Exploring model performance and transferability

Journal of Environmental Management, Год журнала: 2025, Номер 381, С. 125152 - 125152

Опубликована: Апрель 5, 2025

Язык: Английский

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Early Warning Thresholds for Microalgal Blooms and Environmental Drivers of Substrate Microalgae Recovery in Litopenaeus vannamei Aquaculture

Water Air & Soil Pollution, Год журнала: 2025, Номер 236(6)

Опубликована: Апрель 28, 2025

Язык: Английский

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Harnessing seaweed for biohydrogen production: An integrated ecological and energy framework

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 136, С. 1 - 10

Опубликована: Май 8, 2025

Язык: Английский

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Algal bloom forecasting leveraging signal processing: a novel perspective from ensemble learning

Water Research, Год журнала: 2025, Номер unknown, С. 123800 - 123800

Опубликована: Май 1, 2025

Язык: Английский

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A comprehensive review of various environmental factors' roles in remote sensing techniques for assessing surface water quality

The Science of The Total Environment, Год журнала: 2024, Номер 957, С. 177180 - 177180

Опубликована: Ноя. 23, 2024

Язык: Английский

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Utilization strategy for algal bloom waste through co-digestion with kitchen waste: comprehensive kinetic and metagenomic analysis

Environmental Research, Год журнала: 2024, Номер 255, С. 119194 - 119194

Опубликована: Май 21, 2024

Язык: Английский

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