In recent years, biological floating bed technology has been applied increasingly in aquaculture ponds. In this study we developed a novel floating bed made from ceramsite and studied its effect on water quality, phytoplankton, bacteria and fish growth. Water quality was effectively regulated and controlled in ceramsite floating bed (CFB) ponds with an average transparency of 23.18 cm, ammonia nitrogen (NH-N) of 2.30 mg L, total nitrogen (TN) of 5.09 mg L and total phosphate (TP) of 1.32 mg L which are lower than in control ponds without CFB. Increased phytoplankton species diversity, bacterial number, metabolic activity and microbial diversity was observed with CFB. At the end of growth stage, feed conversion ratio (FCR) was reduced with a total fish yield of 14,838 kg ha at a survival rate of 77.2% in CFB ponds, which is significantly higher than control (P < 0.05). These results emphasize the potential of ecological floating bed to improve water quality, microalgal diversity, reduce the risk of harmful algal blooms and increase the number, activity and diversity of microorganisms as well as fish yield.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2166/wst.2018.187 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Preventable hospitalizations through ED: does the number of hospital beds matter under the global budget in a single-payer system in Taiwan?
Front Public Health
January 2025
Division of Medical Statistics and Bioinformatics, Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung City, Taiwan.
Background: Taiwan implemented global hospital budgeting with a floating-point value, which created a prisoner's dilemma. As a result, hospitals increased service volume, which caused the floating-point value to drop to less than one New Taiwan Dollar (NTD). The recent increase in the number of hospital beds and the call to enhance the floating-point value to one NTD raise concerns about the potential for increased financial burden without adding value to patient care if hospitals expand their bed capacity for volume-based competition.
View Article and Find Full Text PDFScientometric approach to the scientific trends in articles on seagrass in the Atlantic Coast published between 1969-2024.
Front Plant Sci
December 2024
Laboratório de Ecologia de Sedimentos, Instituto de Biologia, Departamento de Biologia Marinha, Universidade Federal Fluminense, Niterói, Brazil.
Submerged or partially floating seagrasses in marine or brackish waters form productive seagrass beds, feeding grounds for a rich and varied associated biota, play key ecological roles in mitigating climate change and provide ecosystem services for humanity. The objective of this study was to perform a temporal quali- and quantitative analysis on the scientific production on seagrasses in the Atlantic Ocean during last 64 years (1960 to 2024) through defined workflow by scientometric analysis on Scopus database. Publications in this database date back to 1969, comprising a total of 3.
View Article and Find Full Text PDF1+1<2: Combined effect of low temperature stress and salt stress on Sesuvium portulacastrum L.
Plant Physiol Biochem
December 2024
School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China; Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China. Electronic address:
To expedite the deployment of Sesuvium portulacastrum floating bed technology in Hangzhou Bay and the Yangtze River Estuary, and to overcome the cryogenic constraint, our study concentrated on investigating the impacts of both individual and combined stress factors, particularly low temperature and salinity, on its application. We detected the S. portulacastrum related enzyme activity and other biological macromolecules under low temperature stress, salt stress and combined stress.
View Article and Find Full Text PDFImpoundment-induced stoichiometric imbalance exacerbated phosphorus limitation in a deep subtropical reservoir: Implications for eutrophication management.
Water Res
February 2025
Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Chuangzhan Road, Nanjing 211135, China.
Impoundments play a vital role as nutrient sinks, capable of retaining and exporting nitrogen (N) and phosphorus (P) at different rates. The imbalance in N and P stoichiometry relative to phytoplankton demand often determines the limiting nutrient of phytoplankton biomass in these systems. This critical factor has a substantial impact on the management of eutrophication, encompassing the formulation of nutrient control strategies and the setting of regulatory thresholds.
View Article and Find Full Text PDFSpatial accessibility and equity of primary healthcare in Zhejiang, China.
Int J Equity Health
November 2024
School of Nursing, Anhui Medical University, Hefei, China.
Background: Enhancing the accessibility and equity of primary healthcare (PHC) is a crucial objective of China's healthcare reform. However, spatial barriers remain a significant factor contributing to the inequitable access to PHC services among residents.
Objective: This study aims to quantify the spatial accessibility (SA) and evaluate the equity of PHC resources in a pilot province for healthcare reform, and its municipalities, thereby providing insights that can be generalized to the broader context of China.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!