Articles

Title:	Blooms of Aphanizomenon flos-aquae associated with historical trophic changes occuring in Lake Świętokrzyskie, Poland
Authors:	Marshall G. Harold Burchardt Lubomira Kokociński Mikołaj Owsianny Paweł M.
Abstract:	Sediment records and more recent water quality and phytoplankton analyses have been used together to identify the changing trophic status of Lake Świetokrzyskie over the past 7,570 years. These changes have been more rapid in recent times due to expanding human influence and urban development surrounding this lake (e.g., since approximately 1300 A.D.). Changing algal populations have accompanied this transition in the lake and include the increasing dominance of Aphanizomenon flos-aquae (L.) Ralfs ex Born. et Flah. 1888 as a summer bloom producer. Several water quality relationships to the algae have included greater biomass levels of A. flos-aquae and several morphological features in the development of this taxon. These include the increased number and greater size of its vacuoles with iron concentrations >0.18 mg l^-1 in the lake during its early development stages that have enhanced A. flos-aquae buoyancy and surface abundance. Other relationships include the increased production of its heterocytes and spores when phosphate levels exceeded 0.3 mg l^-1.
DOI:
Type of paper:	Original research paper
Pages:	261 to 266
Cytation:	Burchardt L., Marshall H.G., Kokociński M., Owsianny P.M., 2007, Blooms of Aphanizomenon flos-aquae associated with historical trophic changes occuring in Lake Świętokrzyskie, Poland, Ocean. Hydrob. Studies, 36(Supl.1): 261-266
Keywords:	Aphanizomenon flos-aquae, trophic changes, blooms, Świętokrzyskie Lake, phytoplankton
Year:	2007
Category:
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