Evaluation of factors influencing annual occurrence, bioaccumulation, and biomagnification of antibiotics in planktonic food webs of a large subtropical river in South China
| Autor: | Yiping Tai, Ran Tao, Su Linhui, Xiaomeng Zhang, Nora F.Y. Tam, Yuming Shi, Yang Yang, Luo Bangke, Sai Wang, Tang Jinpeng |
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| Rok vydání: | 2019 |
| Předmět: |
China
Environmental Engineering Food Chain Biomagnification 0208 environmental biotechnology Bioconcentration 02 engineering and technology 010501 environmental sciences 01 natural sciences Zooplankton Rivers Phytoplankton Animals Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering Biodilution Ecological Modeling fungi Biological pump Plankton Pollution Bioaccumulation 020801 environmental engineering Anti-Bacterial Agents Lakes Environmental chemistry Environmental science Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Water research. 170 |
| ISSN: | 1879-2448 |
| Popis: | Biological pump is important to control the fate and distribution of organic contaminants, particularly in temperate and cold oligotrophic waters. However, it remains largely unknown how factors affect the long-term occurrence and fate of ionogenic organic compounds in subtropical eutrophic waters. The present study aimed to assess biogeochemical and physical factors affecting the annual occurrence, bioaccumulation, and trophic transfer of 14 antibiotics through planktonic food webs in the Pearl River, a large subtropical eutrophic river in China. This was done by carrying out 1-year simultaneous field observations of antibiotic concentrations in five water column compartments and assessing the variability of bioconcentration (BCF), bioaccumulation (BAF), and biomagnification (BMF) factors, which were influenced by plankton biomass, pH and temperature of water columns. The annual mean antibiotic concentration per site ranged from 1014.66 ± 535.66 ng L−1 to 1464.63 ± 1075.91 ng L−1, and was positively correlated with phytoplankton biomass, but independent of the proximity of the sites to urban areas. Antibiotic occurrences in both phytoplankton and zooplankton were greatly influenced by a biodilution effect. The annual occurrence of antibiotics in the water column was modulated by biological pumps as well as their equilibrium partitioning, and indirectly influenced of eutrophication with pH increased with phytoplankton biomass and phytoplankton life cycling. BAF of antibiotics by plankton had biphasic correlations with temperature (n = 150, R2 = 0.17–0.60, p |
| Databáze: | OpenAIRE |
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