SVIBOR - Project code: 1-08-239

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

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Project code: 1-08-239


MICROBIOLOGICAL CHARACTERISTICS OF THE SEDIMENTS OF THE FRESHWATER-ECOSYSTEMS


Main researcher: STILINOVIĆ, BOŽIDAR (44835)


Assistants
Type of research: applied
Duration from: 01/01/91. to 12/31/93.
Papers on project (total): 27
Papers on project quoted in Current Contents: 2
Institution name: Prirodoslovno-matematički fakultet, Prirodoslovni odjeli, Zagreb (119)
Department/Institute: Department of botany
Address: Rooseveltov trg 6
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (041) 442-604 ili 442-804
Fax: 385 (041)
Summary: The top layer of the mud (sediment) in lakes and rivers have a high content of organic nutriens and, therefore colonized by a very large number of microorganisms. Due to microbial activity the organic matter are broken down and gradually diminishes. In the sediments of eutrophic water microbial activity in the degradation of organic matter leads to the formation of anaerobic zones, where denitrification and desulphurication occur. The main source of the degradable organic matter in sediments are planktonic copmmunities, where the phytoplancton play an important role. T eutrofication and degradation of the lakes depend on the organic contens of sediment and microbiological activity on the bottom. Sediment is the main ecological niche in all inland waters.

Keywords: lakes, sediment, phytoplancton, physiological groups of bakteria, cycling of elements, eutrofication

Research goals: To detect the remineralization of organic substance of autohtonus origin (phytoplankton) in some lakes in Croatia, with particular attention on the bacteria-producers of hydrogen sulhide from proteins and sulphates. The observe and compare the microbiological contens of the sediment, and the trophic grade of the lake. Thermophilic bacteria in sediment as as the indicators of the anthropogenic influence (manure).

COOPERATION - PROJECTS


  1. Name of project: Korozione bakterije u rashladnim vodama
    Name of institution: Petrolite
    City: A- - Beč, Austria

  2. Name of project: Mikrobna korozija u rashladnim vodama
    Name of institution: Premaberg Industrieanlagen
    City: A- - Beč, Austria

COOPERATION - INSTITUTIONS


  1. Name of institution: PETROLITE, Wien, Austria
    Type of institution: University/Faculty
    City: A- - Beč, Austria

  2. Name of institution: Premaberg Industrieanlagen, Wien, Austria
    Type of institution: State institute
    City: A- - Beč, Austria

OTHER ACHIEVEMENTS


  1. Name: OMW Werkstoff, Pruefvorschrift, PCD Norm, Wien 024.01Methods of Study the Bacterial Production of Hydrogen Sulfide from Proteins
    Type of achievement: Instrumentation
    Authors: Stilinović Božidar
Other information about the project.
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