نتایج جستجو برای: eutrophic reservoir

تعداد نتایج: 44008  

2017
Gang Wen Xuan Li Xiaopeng Qiu Ya Cheng Yuankui Sun Tinglin Huang

Since the 1950s, the pollution of reservoirs has become serious. The water quality in reservoirs is deteriorating due to population growth, industrialization, and urbanization. In order to clarify the characteristics of water quality change in reservoirs, in-situ monitoring of water quality and phytoplankton were conducted in Jinpen Reservoir, Shibianyu Reservoir, Zhoucun Reservoir, and Zhelin ...

Eutrophication is considered as a serious problem in water reservoirs. Awareness about the eutrophic status of each reservoir could help in providing a better understanding of the problem in a global scale. The present study was conducted to assess temporal and spatial eutrophication index in a water reservoir (Sahand dam) in the northwest of Iran. Physico-chemical parametres that are effective...

Ghashghaie, Maryam , Nozari, Hamed , Taheri Tizro, Abdollah ,

Background and purpose: The study aimed to investigate the trophic state of Ekbatan Dam Lake. In the current research, the quality of water behind the dam was studied during the months July and January in order to compare the trophic state and zonation of the reservoir in two different seasons (dry and wet). Materials and Methods: 15 sites were selected in different points of Ekbatan Dam Lak...

2017
Christine Coelho Birgit Heim Saskia Foerster Arlena Brosinsky José Carlos de Araújo

We analyzed chlorophyll-a and Colored Dissolved Organic Matter (CDOM) dynamics from field measurements and assessed the potential of multispectral satellite data for retrieving water-quality parameters in three small surface reservoirs in the Brazilian semiarid region. More specifically, this work is comprised of: (i) analysis of Chl-a and trophic dynamics; (ii) characterization of CDOM; (iii) ...

Journal: :journal of research in health sciences 0
keywan weysi heshmatollah nourmoradi mohammad reza samarghandi mohammad taghi samadi

background: eutrophication is one of the detrimental environmental problems in water reservoirs dye to the irregular introducing nutrients (phosphorus and nitrogen). this study aimed to explore the eutrophication state of ekbatan reservoir, hamadan, western iran. methods: monthly sampling was conducted during april 2010 to march 2011. seven sampling stations were selected in the various locatio...

2017
José Carlos de Araújo

We analyzed Chlorophyll-a and CDOM dynamics from field measurements and 17 assessed the potential of multispectral satellite data for retrieving water-quality parameters in 18 three small surface reservoirs in the Brazilian semiarid region. More specifically, this work 19 comprises i) analysis of Chl-a and trophic dynamics; ii) characterization of CDOM; iii) estimation 20 of Chl-a and CDOM from...

Journal: :Indonesian Journal of Limnology 2021

Koto Panjang Reservoir is one of the hydroelectric power plants in Indonesia, located Kampar Regency, Riau Province. This paper aims to determine water quality and tropic status Reservoir. The research was carried out along Reservoir, covering floating net cages area, inlet, outlet, center reservoir. Water samples were collected twice a year, February September 2017. results showed that reservo...

2015
Silvana Duarte Marcelo Bemquerer Francisco Gerson Araújo

Enzymatic activities for digestion of proteins and carbohydrates were compared among three organs of the digestive system of Pimelodus maculatus in two reservoirs with different trophic conditions during the winter of 2006. The aim was to test the hypothesis that enzymatic activity for the digestion of proteins and carbohydrates differed among organs and that such activities differ between the ...

2010
Ewa Szarek-Gwiazda Grażyna Mazurkiewicz-Boroń E. Szarek-Gwiazda G. Mazurkiewicz-Boroń

Nutrients, pH, and organic matter were determined in water samples collected from the Raba River above Dobczyce Reservoir (meso-eutrophic), from the Dunajec River above Czorsztyn Reservoir (mesotrophic), and Rożnów Reservoir (eutrophic), and in the bottom sediments of the reservoirs. The river waters were alkaline (pH 7.2–9.2). In the Raba River and Dunajec River, the ranges of nutrients and or...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2002
A C Rietzler T Matsumura-Tundisi J G Tundisi

The population dynamics, life cycle and feeding of Argyrodiaptomus furcatus and Notodiaptomus iheringi, were studied in Broa reservoir from August 1988 to August 1989, period when a replacement of A. furcatus by N. iheringi was observed. Some abiotic factors such as temperature, dissolved oxygen, pH and conductivity were measured to characterize the limnological conditions of the reservoir. Als...

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