Кл.слова (ненормированные):
biomass -- fluorescent analysis -- Lake Baikal. -- pelagial -- plankton -- vertical profile -- Air -- Atmospheric chemistry -- Biomass -- Calibration -- Carbon dioxide -- Fluorescence -- Geophysics -- Plankton -- Fluorescent analysis -- Fluorescent characteristic -- Lake Baikal -- pelagial -- Quantitative assessments -- Quantitative characteristics -- Spatial and temporal variability -- Vertical profile -- Lakes
Аннотация: We study the effect of physical, chemical and biological processes on gas exchange of CO2 in the air-water system in Lake Baikal. Photosynthesis of aquatic biota is known to play a crucial role in changing the concentration of carbon dioxide in the water. Fluorescent methods are considered to be of high performance in problems of determining quantitative characteristics of biomass, however they require preliminary calibration directly for a specific type of plankton. In the pelagic zone of Lake Baikal the species composition, quantitative and spatial distribution of phytoplankton are characterized by strong spatial and temporal variability. Therefore, the fluorescent devices calibration on a single reference does not provide acceptable accuracy of quantitative assessment of the biomass. The results discussed in the paper were obtained by shipboard measurements during the Baikal campaign of 2010-2011. Correlation between the biomass in 25-meter water layer and the integral value of the fluorescent signal in this layer was obtained for calibration. The report discusses the advantages and disadvantages of the chosen methods and the results of retrieval of the vertical profiles of the biomass for stations in the pelagic zone of Lake Baikal in spring for the 2010-2011 biennium.
Scopus
Держатели документа:
Institute of Atmospheric Optics, Siberian Branch, Russian Academy of SciencesTomsk, Russian Federation
Limnological Institute, Siberian Branch, Russian Academy of SciencesIrkutsk, Russian Federation
Institute of Computational Modeling, Siberian Branch, Russian Academy of SciencesKrasnoyarsk, Russian Federation
Доп.точки доступа:
Panchenko, M.V.; Sakirko, M.V.; Usoltseva, M.V.; Popovskaya, G.I.; Domysheva, V.M.; Shimaraev, M.N.; Zavoruev, V.V.; Pestunov, D.A.