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  • Pollution  (62)
  • Rivers  (59)
  • Chemistry  (48)
  • AERODYNAMICS
  • Freshwater Biological Association  (128)
  • Fisheries Society of Nigeria
  • 1
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    On drift and diel vertical migration of bottom invertebrates of the Amur. [Translation from: Zoologicheskie Zhurnal 42 1601-1612, 1963.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4817 | 1256 | 2011-09-29 15:51:19 | 4817 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: Planktobenthos was sampled in 1957-58 in the river Amur. A determination of the kind of organisms drifting in the mass of water of the Amur was carried out. Of special interest for the authors was the activity of drifting of benthic larvae.
    Description: Translated from Russian into English
    Keywords: Biology ; Ecology ; Limnology ; Rivers ; Benthos ; Benthic currents ; Invertebrate larvae ; Biological drift ; Vertical migrations ; Amur River ; Ephemeroptera
    Repository Name: AquaDocs
    Type: monograph
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  • 2
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    Some aspects of the ecology of the limnoplankton, with special reference to the phytoplankton. [Translation from: Svensk Botanisk Tidskrift 13(2) 129-163, 1919.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4819 | 1256 | 2011-09-29 15:51:22 | 4819 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: This paper tries to develop more generally some fundamental bases for the ecological study of freshwater plankton. A special attention is given to the phytoplankton associations which can be separated out and made into groups according to their dependence upon changing environments. Plankton formations in different types of water bodies (ponds, lakes and rivers) are studied.
    Description: Translated from Swedish into English
    Keywords: Biology ; Ecology ; Limnology ; Freshwater ecology ; Rivers ; Ponds ; Freshwater lakes ; Phytoplankton ; Planktonology
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    The changes in various iron compounds in culture media for algae. [Translation from: Archiv fur Hydrobiologie Supplemente Band 38(1/2) 151-169, 1970.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4839 | 1256 | 2011-09-29 15:49:48 | 4839 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The purpose of this work is a contribution to the quantitative record of the use of iron by planktonic algae. Preliminary experiments with Chlorella to determine the rate of iron intake in the presence of inorganic sources of iron did not produce the desired result. The crucial point of this work is the investigation of the influence of various external factors on the stability of FeEDTA (FeEDTA = Ferric(III)-compound of ethylene-diamine tetra-acetic acid), since this compound appears to be particularly well-suited as a source of iron for planktonic algae (e.g. TAMIYA et al. 1953). Cultures of Chlorella fusca in a light thermostat were used in experimental research. Methods and results are discussed.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    Determination of dissolved oxygen in water with leukoberbelin-blue I. A quick Winkler method. [Translation from: Z.analyt.Chem. 262 97-99, 1972.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4843 | 1256 | 2011-09-29 15:49:28 | 4843 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The reaction of Mn(II) with water-dissolved oxygen, to a higher manganese hydroxide in an alkaline medium, as with the longstanding classic Winkler method, is the first step in the method described here. The assumption for faultless results by the conventional and modified Winkler method is clean water, which contains no organic substances by Mn(III) or Mn(IV). In many cases, however, eg. in river and lake-water tests, it can be seen with the naked eye that after some time the originally brown-coloured precipitate of manganese hydroxide becomes more and more colourless. Oxygen content was analysed in the water samples and evaluated by raising the amount of the leuko-base and giving the corresponding dilution of the colouring matter solution formed still higher oxygen contents can be measured.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Methodology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Nitrogen and phosphorus forms in water and the food requirements of algae. [Translation from: Wiadomosci Ekologiczne 19 238-244, 1973. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4848 | 1256 | 2011-09-29 15:49:18 | 4848 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.
    Description: Translated from Polish into English
    Keywords: Biology ; Chemistry ; Limnology ; Algae ; Nitrogen fixation ; Nitrogen ; Phosphorus ; Nutritional requirements ; Bacteria ; Organic compounds
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    Physiology of nitrate reduction in Pseudomonas aeruginosa. [Translation from: Z.allg.Mikrobiol. 13, 83-94, 1973.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4856 | 1256 | 2011-09-29 15:48:26 | 4856 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: Pseudomonas aeruginosa has for some time been known as a denitrifier. Pseudomonas aeruginosa was chosen for further studies, because P. aeruginosa occurs abundantly in Plusssee and moreover there are contradictory assertions on the gas products of denitrification by this bacteria. In experimental research the pattern of growth and gas production of Pseudomonas aeruginosa on nutrient broth was studied.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Experimental research ; Bacteria ; Freshwater lakes ; Growth ; Microbiological culture ; Plusssee
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    Relationship of dimensions and weight in freshwater planktonic crustaceans. [Translation from: Doklady Akademii Nauk SSSR 84(1) 153-156, 1952. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4857 | 1256 | 2011-09-29 15:48:28 | 4857 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: There is no doubt that determination of the biomass of zooplankton (primarily of crustaceans) will be taken into consideration in practice and limnological works, especially after the recent publication of fairly comprehensive tables of weights of a whole range of species of freshwater copepods and cladocerans. The usefulness of applying formulae of determining the biomass of marine crustaceans for freshwater copepods is discussed.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Biomass ; Formulae
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    For the determination of iron (II) and total iron with 2,2'-dipyridyl in mineral waters. Reduction of iron (III) with ascorbic acid [Translation from: Zeitschrift fur Analytische Chemie 209 340-341, 1965] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4877 | 1256 | 2011-09-29 15:47:02 | 4877 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The determination of bi- and trivalent iron in proximity, in mineral waters has gained in significance, on biological and technical grounds. This short paper describes the procedure of the determination of bivalent iron and total iron in a water sample.
    Description: Translated from German into English
    Keywords: Chemistry ; Limnology ; Iron ; Acids ; Analytical techniques ; Minerals ; Water analysis
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    The effects of temperature on growth and metabolism of flowing water cold-stenotherms [Translation from: Archiv fur Hydrobiologie 74(4) 479-495, 516-522, 1974] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4878 | 1256 | 2011-09-29 15:47:04 | 4878 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: A small stream in the French Alps was sampled at regular intervals to determine the size distribution of animals for growth studies. The temperature was also measured. The results obtained for Gammarus fossarum were compared with laboratory cultures and the laboratory animals were physiologically and chemically analysed. Chemical analysis was also carried out on field animals.
    Description: Translated from German into English
    Keywords: Biology ; Limnology ; Freshwater crustaceans ; Laboratory culture ; Experimental research ; Rivers ; Temperature effects ; Feeding experiments ; Size distribution ; Gammarus fossarum
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    Fish zoning of some watercourses in Normandy [Translation from: Verhandlungen der Internationalen Vereinigung fuer Theoretische und Angewandte Limnologie 18, 1135-1146, 1972] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4891 | 1256 | 2011-09-29 15:45:56 | 4891 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: The identification of fish zones in western and central Europe has been the objective some major studies. This paper concerns a stream in Normandy specially studied by the author in 1969 and 1970 in the framework of a study on the role of the mean temperature in fish zoning. The paper propounds the comparative study of the morphodynamic and occasionally physico-chemical characteristics, as well as the results of previous sampling by electric fishing of the fish populations of two other streams of the higher Cretaceous layer and supplied by ”chalky” water in Normandy and Picardy.
    Description: Translated from French into English
    Keywords: Biology ; Ecology ; Limnology ; Ecological zonation ; Gradients ; Hydrobiology ; Rivers ; River discharge ; Freshwater fish ; Population characteristics ; Cretaceous ; France
    Repository Name: AquaDocs
    Type: monograph
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