نتایج جستجو برای: c 10

تعداد نتایج: 1918766  

Journal: :Applied and environmental microbiology 2011
M C Konopka T J Strovas David S Ojala L Chistoserdova M E Lidstrom M G Kalyuzhnaya

The ability to detect specific functions of uncultured microbial cells in complex natural communities remains one of the most difficult tasks of environmental microbiology. Here we present respiration response imaging (RRI) as a novel fluorescence microscopy-based approach for the identification of microbial function, such as the ability to use C(1) substrates, at a single-cell level. We demons...

2004
A. V. Gray Wang Li

The main aim of this work was to construct and validate a mathematical water quality model of the Dianchi lake, so that by altering input total phosphate (TP) loads the projected changes in the lake water TP concentrations could be estimated. Historical information had indicated deteriorating lake water quality with increasing TP concentrations. The model was based on a simple annual mass balan...

2013
Juan Huang Jinyan Zhan Haiming Yan Feng Wu Xiangzheng Deng

It has been widely accepted that there is a close relationship between the land use type and water quality. There have been some researches on this relationship from the perspective of the spatial configuration of land use in recent years. This study aims to analyze the influence of various land use types on the water quality within the Chaohu Lake Basin based on the water quality monitoring da...

2013
Kadir Özdemir İsmail Toröz Vedat Uyak

In this study, the changes in UV absorbance of water samples were characterized using defined differential UV spectroscopy (DUV), a novel spectroscopic technique. Chlorination experiments were conducted with water samples from Terkos Lake (TL) and Büyükçekmece Lake (BL) (Istanbul, Turkey). The maximum loss of UV absorbance for chlorinated TL and BL raw water samples was observed at a wavelength...

2017
Yehui Zhang Na Yang Jiawei Xu Yixing Yin

Based on long-term rainfall measurements (1956-2012), water level records (1956-2006), and aquatic plants field survey data (1960-2014), the relationship between precipitation and aquatic vegetation succession in east Taihu Lake, China, is studied. Neither abrupt changes nor any trends were found in the annual rainfall series in Taihu Lake during the studied period (1956-2012). However, for sea...

Journal: :Journal of environmental biology 2012
Edgars Cubars Gotfrids Noviks

The increasing demand for energy, limited resources of fossil fuel, as well as pollution of the environment and changes in the global climate have raised more interest about the renewable resources. The use of renewable resources has become a very important partof European Union policy. The aim of the paper was to analyse reed resources in Latvia, its dynamics, volume and quality to produce cle...

2015
Lei Fang Lei Chen Yuan Liu Wei Tao Zhongzhe Zhang Haiying Liu Yong Tang

Lake Sayram is an ancient cold water lake locating at a mountain basin in Xinjiang, China. The lake water is brackish, alkaline, unpolluted, and abundant in SO4(2-) and Mg(2+). The lacustrine ecosystem of Lake Sayram has been intensely investigated. However, profiles of the microbial communities in the lake remain largely unknown. In this study, taxonomic compositions of the planktonic and sedi...

2016
Wei Huang Xia Jiang

The sediment microbial community in downstream-linked lakes can be affected by the operation of large-scale water conservancy projects. The present study determined Illumina reads (16S rRNA gene amplicons) to analyze and compare the bacterial communities from sediments in Dongting Lake (China) before and after impoundment of the Three Gorges Dam (TGD), the largest hydroelectric project in the w...

2017
Mengna Liao Ge Yu Ya Guo

Poyang Lake is suffering from persistent eutrophication, which is degrading the local ecosystem. A better understanding of the mechanisms that drive eutrophication in lake systems is essential to fight the ongoing deterioration. In this study, hydraulic residence time (HRT) was used to evaluate Poyang Lake's trophic state. A hydrology and ecosystem forced model was constructed to simulate long-...

Journal: :Molecular ecology 2007
Pierre-Philippe Dupont Vincent Bourret Louis Bernatchez

Disentangling ecological, behavioural and evolutionary factors responsible for the presence of stable population structure within wild populations has long been challenging to population geneticists. This study primarily aimed at decoding population structure of wild walleye (Sander vitreus) populations of Mistassini Lake (Québec, Canada) in order to define source populations to be used for the...

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