Objective: To compare the bacterioplankton communities in streams exposed to pollution of different types.
Methods: The bacterioplankton communities in three selected heavily polluted streams were investigated by using terminal-restriction fragment length polymorphism (T-RFLP) analysis in combination with 16S rRNA gene clone library analysis.
Results: Both T-RFLP and 16S rRNA gene clone library revealed a great difference in bacterioplankton community composition in the different streams.
Conclusion: This work might provide some new insights into bioremediation of heavily polluted streams.
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http://dx.doi.org/10.3967/0895-3988.2011.02.008 | DOI Listing |
Mar Environ Res
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laoshan Laboratory, Qingdao, 266237, China.
Coastal bays link terrestrial and oceanic carbon reservoirs and play important roles in marine carbon cycles. Particulate organic carbon (POC) produced by phytoplankton is a major autochthonous carbon source in coastal bays. Previous studies on the fate of POC produced by phytoplankton mainly focused on the relationship between phytoplankton and zooplankton in classic food webs, while our knowledge on the roles of bacterioplankton is still limited, particularly in bays under highly intensive aquaculture activities.
View Article and Find Full Text PDFSci Total Environ
December 2024
Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
Microbial community coalescence is a ubiquitous ecological process in various ecosystems. However, limited research has addressed the effects of the coalescence on microbial ecological processes and network structure, particularly in the context of sewage discharge during high amplitude hydrological periods. Employing 16S rRNA sequencing and species source tracking analysis, we investigated the coalescence pattern of bacterioplankton in the Chishui river and sewage across various hydrological periods.
View Article and Find Full Text PDFMar Environ Res
December 2024
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China. Electronic address:
Mixotrophic dinoflagellates frequently cause harmful algal blooms (HABs) in eutrophic waters that contain diverse dissolved organic matter (DOM), especially intensive mariculture areas. Compared to the extensive investigation of phagotrophy and single organic molecule uptake by causative species, we have limited knowledge about the capability of mixotrophic dinoflagellates to utilize in-situ DOM in mariculture waters and its contribution to HABs. Here we use filtered in-situ mariculture water as the sole medium to examine the physiological response of Prorocentrum donghaiense to the natural mariculture DOM.
View Article and Find Full Text PDFISME J
December 2024
Department of Biology, Laboratory of Aquatic Biology, MicrobiomeEcoEvo group, KU Leuven, Etienne Sabbelaan 53 - B7659, Kortrijk 8500, Belgium.
Microplastic pollution in aquatic environments is a growing global concern. Microplastics, defined as plastic fragments smaller than five millimetres, accumulate in freshwater reservoirs, especially in urban areas, impacting resident biota. This study examined the effects of microplastics on the performance and microbiome of Daphnia, a keystone organism in freshwater ecosystems, through both in situ sampling of freshwater ponds and a controlled 23-day in vitro exposure experiment.
View Article and Find Full Text PDFWater Res
November 2024
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China. Electronic address:
Investigating the critical role of carbon cycling feedback to warming is essential for understanding future biosphere development. One of the current challenges is that the warming effect on carbon cycling is inconsistent across various aquatic ecosystems. It was postulated that the composition of dissolved organic matter (DOM) and the microbial community influenced the response of carbon metabolism to warming.
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