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Wyszukujesz frazę "pond" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Studies on some physico-chemical parameters of cyanophycean members and correlation coefficient of eutrophic ponds in Chidambaram, Tamil Nadu, India
Autorzy:
Elayaraj, B.
Selvaraju, M.
Powiązania:
https://bibliotekanauki.pl/articles/10938.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
physicochemical parameter
phytoplankton
correlation coefficient
eutrophic pond
pond
Chidambaram town
Tamil Nadu
India
Opis:
The present study deals with the statistical analysis of physico-chemical parameters and cyanophycean members of two pond water quality of Chidambaram, Cuddalore district (Tamil Nadu). The qualities of pond water were analyzed for six months. Eleven important parameters were included in statistical analysis. The qualities of pond water have been assessed by calculating mean, standard deviation and correlation coefficient. Correlation studies of hydrobiology with physico-chemical parameters revealed that the relationship between phytoplankton density in general and that of the specific groups are highly complex and often controlled by interactions of different factors. In the both pond water the correlation coefficient test revealed that cyanophycean members positively correlated with temperature, pH, CO2, alkalinity, hardness, nitrate, BOD and COD at 1 % and 5 % level significant, where as it is negatively correlated with acidity and dissolved oxygen. In the present study it can be concluded that the cyanophycean members are highly tolerant organisms. They prefer to grow at higher temperatures and in highly alkaline, BOD and COD waters. Hence they can with stand high levels of contaminated waters of Thillai Kali Kovil pond, when compared to Ilamiyakkinar Kovil pond.
Źródło:
International Letters of Natural Sciences; 2014, 11, 2
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fertility Differences between Silvofishery Pond and Conventional Pond in Legonkulon, Subang District, Indonesia
Autorzy:
Sahidin, Asep
Zahidah, Zahidah
Kurniawati, Nia
Herawati, Heti
Rizal, Achmad
Powiązania:
https://bibliotekanauki.pl/articles/1075743.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Fertility
Makrozoobentos
Plankton
Pond
Silvofishery
Subang District
Opis:
This study was conducted to determine the fertility difference between silvofishery pond and conventional pond in Legonkulon, Subang, West Java. Sampling methods was used by collecting samples four times in the composite from five sampling points at six stations (three stations at silvofishery ponds and three stations at conventional ponds). The data were analyzed with comparative descriptive method. The results showed that average abundance of phytoplankton in the silvofishery pond is higher (1935 ind/l) than in the conventional pond (494 ind/l). Average abundance of zooplankton in the silvofishery pond found lower (383 individuals/L) than conventional pond (963 ind/l). Makrozoobenthos average abundance is not significantly different between silvofishery pond and conventional pond with average abundance of each 1162 and 1306 individuals/m2 respectively. Silvofishery pond with a composition of 20% mangrove and 80% ponds increased fertility of plankton and makrozoobenthos.
Źródło:
World Scientific News; 2019, 118; 115-128
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exotic fish, the guppy Poecilia reticulata (Peters, 1859) (Poecilidae) found in thermally polluted canal in Central Poland
Autorzy:
Maciaszek, Rafał
Marcinek, Dorota
Sosnowski, Witold
Powiązania:
https://bibliotekanauki.pl/articles/1065334.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Poecilia reticulata
Vistula river
alien species
aquarium
inland waters
ornamental pet
pond
Żerań canal
Opis:
This work describes the case of an introduction of the guppy Poecilia reticulata in a thermally polluted canal of the Żerań CHP plant in Warsaw. Captured individuals were identified and described. The find is discussed along with available scientific literature describing introductions of alien species of aquarium origin in Polish and European waters.
Źródło:
World Scientific News; 2019, 135; 289-293
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unsuccessfull introduction of the common pleco Hypostomus plecostomus Linnaeus, 1758 (Loricariidae) in artificial pond in Warsaw, Central Poland
Autorzy:
Maciaszek, Rafał
Skomorucha, Łukasz
Eberhardt, Maria
Powiązania:
https://bibliotekanauki.pl/articles/1068650.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Hypostomus plecostomus
Vistula river
alien species
aquarium
inland waters
ornamental fish
pond
suckermouth catfish
Opis:
This paper describes the case of an unsuccessful introduction of the common pleco Hypostomus plecostomus (Linnaeus, 1758) (Loricariidae) in an artificial water reservoir near Warsaw Citadel, which is the second instance described for representatives of American loricariid fish species in Poland. A landed individual has been labelled and presented in the photographs. The finding is discussed with available polish inland waters data and authors observations.
Źródło:
World Scientific News; 2019, 132; 308-312
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological and biomechanical principles of the controlling molluscs Melanoides tuberculata (Müller 1774) and Tarebia granifera (Lamarck, 1822) in reservoirs of strategic importance
Autorzy:
Oleh, Marenkov
Kyrylo, Batalov
Olena, Kriachek
Powiązania:
https://bibliotekanauki.pl/articles/1177801.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Clea helena
Melanoides tuberculata
Tarebia granifera
Zaporizhia Nuclear Power Plant
assassin snail
biological invasion
cooling pond
red-rimmed melania
thiarids
Opis:
The article presents the results of complex laboratory investigations on the biological and biomechanical ways of control of Melanoides tuberculata (Müller 1774) and Tarebia granifera (Lamarck, 1822) molluscs in simulated conditions close to the conditions of the cooling pond of the Zaporizhia Nuclear Power Plant. It was determined that molluscs have naturalized in the Zaporizhia Nuclear Power Plant cooling pond, quickly increased their number and created a threat to hydraulic structures. Taking into account biological features of Thiaridae mollusks and technical and ecological features of Zaporizhia NPP, we carried out a series of experiments using biological control measures (the use of predatory species of hydrobionts) and mechanical means for controlling mollusks. Representatives of different taxons of the Animalia Kingdom were selected as predatory species of hydrobionts, which potentially can consume gastropods: Mollusca, Crustaceans and Fish. It has been found experimentally that the use of marbled crayfish Procambarus virginalis (Lyko, 2017), pumpkinseed Lepomis gibbosus (Linnaeus, 1758) and Botia lohachata Chaudhuri, 1912 has not given positive results in the development of measures to control the number of molluscs. Positive results were obtained in a series of experiments with predatory mollusc assassin snail Clea helena (von dem Busch, 1847), but it was noted that in the presence of more accessible feeds, assassin snail Clea helena (von dem Busch, 1847) consumes smaller quantities of Thiaridae mollusks. The most successful results we obtained in experiments with traps for molluscs. We have developed experimental constructions of traps with lower and upper inlets that act as mollusk accumulator and can be installed in the coastal zone of the reservoir and Zaporizhia NPP cooling system channels for reducing the number of reproductive individuals of Melanoides tuberculata (Müller 1774) and Tarebia granifera (Lamarck, 1822). The most effective were the traps with the lower inlet to which the mollusks could get faster. In order to attract mollusks to traps, we have conducted studies on the use of feed baits for molluscs. Most effectively, molluscs fell into traps that contained lime feed, feedstock sunflower oil and anise oil. The most effective among mollusks was the bait with the addition of anise oil. During the exposure, traps with anise bait traps accumulated 14.1% of molluscs. The conducted researches can serve as the basis for the development of biomelioration measures aimed at reducing the negative impact of accidental introduction of new species of molluscs into technical reservoirs of strategic importance.
Źródło:
World Scientific News; 2018, 99; 71-83
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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