The intensity of respiratory carbon loss through respiration was studied in zooplankton, microplankton, macrozoobentos, macrophytes and sediment in shallow (i.e. littoral) and deep (pelagial+profundal) zones of Lake Bohinj over a year. This study explained the contributions of these components to the total metabolic activity in a particular zone of the lake and the contributions of these zones to whole lake metabolism. These data are important for better understanding of the ecosystem functioning.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 25964761The ETS method was presented as a tool for determination of changes in the functioning of lake ecosystems caused by human activity. We have defined the correlation between the ETS activity in the major groups of organisms in the lake and the EHI index, which is used to assess the trophic status of lakes. Low seasonal variability of the respiratory potential of the sediments and their important role in the decomposition of organic matter and recycling of nutrients in the lake means an advantage for the measurement of the biological oxidation capacity of the sediments.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 24484313At the international scientific conference, the head of this project presented a comparison of the seasonal dynamics of metabolic activity in Lake Bohinj and Lake Bled that was estimated on the basis of the measurement of ETS activities in the key groups of organisms. The results showed differences in the flow of energy and nutrient cycling through the particular group of organisms that are primarily a reflection of different trophic status of both lakes.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 22965465Metabolic potential of the dominant groups of organisms and EHI index which shows “the health of the ecosystem” were estimated to compare ecological status of Lake Bohinj between the years 1995 and 2007. The highest changes were found in sediments. Absence of ice cover, and a higher temperature in 2007 means more intensive production and longer growing season, which in turn affects the dynamics of chemical, physical and biological processes. Publication of the article in publication »Znanost« has provided information on the impact of global warming on Lake Bohinj to Slovenian reading public.
F.01 Acquisition of new practical knowledge, information and skills
COBISS.SI-ID: 1941583On Lake Bohinj, the additional research has been carried out in the frame of doctoral thesis of F. Pajk. These results contribute the new knowledge on the metabolic characteristic of zooplankton organisms. At the international scientific conference, F. Pajk presented the differences in thermal sensitivity of metabolism in two Daphnia species that inhabit different habitats. It was shown that the metabolism of the lake species was less sensitive to temperature change than that of the pond species.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 25964505