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- Title
Isotope Composition of Nitrogen and Stoichiometric Ratios of Elements in Biomass of Spirogyra in Lake Baikal.
- Authors
Gladyshev, M. I.; Glushchenko, L. A.; Kravchuk, E. S.; Anishchenko, O. V.; Kolmakova, A. A.; Kolobov, M. Y.; Razgoniaeva, V. A.; Sushchik, N. N.
- Abstract
Using stable isotope analysis of nitrogen, for the first time the hypothesis on different sources of inorganic nutrients for two groups of littoral algae in Lake Baikal was confirmed. Strongly attached filamentous algae of genus Ulothrix, which developed in the wave-braking zone at depth 0.5 m, and loosely attached filamentous algae of genus Spirogyra, which developed in deeper layers 3.0–5.0 m in a low-turbulence zone, get inorganic nutrients presumably from surface discharge and groundwater inputs, respectively. Besides, stoichiometric ratios C:N and N:P in biomass of the algae indicated that growth of Spirogyra in Lake Baikal was likely limited by nitrogen, while growth of Ulothrix was limited by phosphorus.
- Subjects
NITROGEN isotopes; STABLE isotope analysis; NITROGEN analysis; LAKES; WATER table
- Publication
Doklady Biochemistry & Biophysics, 2020, Vol 491, Issue 1, p70
- ISSN
1607-6729
- Publication type
Article
- DOI
10.1134/S1607672920020088