SVIBOR - Project code: 1-08-081

MINISTRY OF SCIENCE AND TECHNOLOGY

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SVIBOR

SVIBOR - Collecting Data on Projects in Croatia

Project code: 1-08-081


EUTROPHICATION MONITORING IN THE NORTHERN ADRIATIC


Main researcher: DEGOBBIS, DANILO (9061)


Assistants
Type of research: applied
Duration from: 01/01/91. to 12/31/94.
Papers on project (total): 31
Papers on project quoted in Current Contents: 4
Institution name: Institut "Ruđer Bošković", Zagreb (98)
Department/Institute: Center for Marine Research-Rovinj Division
Address: Ul. Giordana Paliage 5
City: 52210 - Rovinj, Hrvatska
Communication
Phone: 385 (0)52 811-544
Fax: 385 (0)52 813-496
E-mail: olimp.irb.hr
Summary: Monitoring of eutrophication and other undesirable phenomena (unusual phytoplankton blooms, near-anoxia in the bottom layer, hypertrophic mucilaginous aggregates, blooms of some faunal species) was continued during the period 1991-1995, with the aim to provide an early warning for state and touristic agencies, and the public opinion. The monitoring was based on parameters, measured with methods widely used in oceanography, that characterize the main processes in the ecosystem: water column stratification, horizontal water advection, nutrient cycles, organic matter production and decomposition, biomass growth and activity of the main planktonic fractions, phyto and zooplankton successions, including a possible appearance of toxic or undesirable species for the extant food chain. The obtained data were elaborated on PC and compared with historical data (since 1966) from the Center for Marine Research oceanographic data base. These implemented data series are also used to investigate the mechanisms of long-term fluctuation in the northern Adriatic ecosystem. Finally, these basic physical, chemical and biological data are essential to characterize the oceanographic conditions, in which researches of specific processes of the organic matter cycle were performed.

Keywords: Eutrophication, anoxia, mucilaginous aggregates, phytoplankton bloom, zooplankton, unusual phenomena, northern Adriatic, monitoring, oceanographic data base.

Research goals: In the last decade undesirable effects of eutrophication andother unusual phenomena on the northern Adriatic ecosystem wereobserved with an increased frequency compared to the seventies.These phenomena, as a result of serious ecological equilibrium disturbances, negatively influenced some economic activities, like tourism and fishery. For these reasons, monitoring activities should be continued with the aim: 1) to provide an early warning and informations useful to competent authorities related to the state in the sea and undesirable phenomena, 2) to collect data useful for planning of possible protection measures, 3) to collect data for studies of long-term changes in the marine ecosystem, and 4) to collect complementary data needed in the research of organic matter cycle in the northern Adriatic. The data obtained during each cruise are compared with historical data (collected since 1966 and stored in a oceanographic database) to establish possible deviations of the observed oceanographic and biological actual characteristics from a "mean" state. These analyses, as well as visual observations in the water column, are used to try to forecast undesirable phenomena (unusual phytoplankton blooms, hypertrophy of mucilaginous aggregates, anoxia, possible contaminations of marine organism swith phytoplankton toxins). Several preliminary technical reports and informations can be prepared for national and international competent organizations, touristic agencies, and the public opinion. The results will be also published in the scientific literature.

COOPERATION - INSTITUTIONS


  1. Name of institution: CNR, Istituto di Biologia del Mare
    Type of institution: University/Faculty
    Type of cooperation: Joint project
    City: 30100 - Venezia, Italia

  2. Name of institution: Laboratorio di Biologia Marina
    Type of institution: University/Faculty
    Type of cooperation: Joint project
    City: 34100 - Trieste, Italia

  3. Name of institution: Državni hidrografski institut
    Type of institution: University/Faculty
    Type of cooperation: Joint publishing of scientific papers
    City: 21000 - Split, Croatia

  4. Name of institution: Biološki zavod Istituta za oceanografiju i ribarstvo
    Type of institution: University/Faculty
    Type of cooperation: Joint project
    City: 20000 - Dubrovnik, Croatia

  5. Name of institution: Institut za oceanografiju i ribarstvo
    Type of institution: University/Faculty
    Type of cooperation: Systematic exchange of information
    City: 21000 - Split, Croatia

  6. Name of institution: Univerza v Ljubljani, Morska Biološka Postaja
    Type of institution: University/Faculty
    Type of cooperation: Joint project
    City: 66100 - Piran, Slovenija
Other information about the project.
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Last update: 10/05/95
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