Contrasting the Water Quality and Bacterial Community Patterns in Shallow and Deep Lakes: Manyas vs. Iznik
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Contrasting the Water Quality and Bacterial Community Patterns in Shallow and Deep Lakes: Manyas vs. Iznik E. Gozde Ozbayram Meriç Albay 1
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Latife Koker
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Reyhan Akçaalan
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Fatih Aydın
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Ali Ertürk
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Orhan Ince
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Received: 12 May 2020 / Accepted: 28 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The objectives of this study are to monitor the physicochemical properties of two freshwater lakes with different chemical characteristics and trophic status over a year (2019) and assess the bacterial diversity by a high-throughput sequencing method for a certain time. Carlson Trophic Index analysis revealed that, whereas the deep lake, Iznik Lake, (TSImean = 48.9) has mesotrophic characteristics, the shallow lake Manyas Lake (TSImean = 74.2) was found at a hypertrophic status. The most important parameters controlling water qualities in the lakes were temperature, alkalinity, and phosphate levels. Although the bacterial communities were dominated by the same phyla (Cyanobacteria, Bacteroidetes, Actinomicrobia, Proteobacteria, and Verrucomicrobia) in both lakes, the communities differed distinctly at the lower levels. Whereas Sporichthyaceae in Manyas Lake accounted for 10% of the total reads, the major share of the sequences was assigned to Cyanobacteria Family I (8%) in Iznik Lake. The hypertrophic Manyas Lake had a more diverse bacterial community rather than Iznik Lake and contained higher numbers of unique Operational Taxonomic Units. Keywords Bacterial community Illumina® MiSeq™ Water quality 16S rRNA Manyas Lake İznik Lake ●
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Introduction Freshwater lakes have critical roles in ecological and economic perspectives, whereas it is a habitat for a diverse biological community, it is also a resource for human consumption (Ma et al. 2018). In these ecosystems, bacteria play a vital role in ecosystem services and have an impact on water quality (Newton et al. 2011) in which the profile is highly dependent on biotic factors and physicochemical characterization of the water (Zwirglmaier et al. 2015). Although, the bacterial community is fundamental for ecosystem processes, much uncertainty still exists about the diversity and function in the lake ecosystems.
* E. Gozde Ozbayram [email protected] 1
Department of Marine and Freshwater Resources Management, Faculty of Aquatic Sciences, Istanbul University, Fatih, 34134 Istanbul, Turkey
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Department of Environmental Engineering, Faculty of Civil Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
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Determination of water quality is a great concern for the lakes indicating the health of the ecosystem as well as the source of nutrient and pollutant loads (Wang et al. 2019). Lakes can be classified into three trophic status regarding their biological activity namely; oligotrophic, mesotrophic, and eutrophic lakes (Feng et al. 2019) in which the trophic status of the lakes gives information about the function and current struc
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