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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Печать: 1521-9429
ISSN Онлайн: 1940-4328

Выпуски:
Том 22, 2020 Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal on Algae

DOI: 10.1615/InterJAlgae.v22.i2.60
pages 167-178

Summer Phytoplankton of Water Bodies of the Dniester Delta (Ukraine) Summer Phytoplankton

N. V. Dereziuk
Odessa National I.I. Mechnikov University, 7 Mayakovsky Lane, Odessa 65082, Ukraine

Краткое описание

The main characteristics of summer phytoplankton from water bodies of the Dniester Delta (species composition, number, biomass, morphological and functional parameters), and their changes over a long-term observation period are presented. Phytoplankton samples were taken in mid-July between 2006-2019 in the Kuchurgan Reservoir, four large flooded lakes, and the Dniester and Turunchuk rivers. In total, 376 phytoplankton species were found over the 14 year period of monitoring; their complete list is given with the indication of cell volumes of the species for each water body studied. Chlorophyta, Bacillariophyta, and Cyanobacteria dominate the populations. It was noted that, with the influx of large volumes of water into the floodplains in 2008 and 2013, the number of Chlorophyta, Dinophyta and Cyanobacteria increased. Maximum values of water temperature in 2010, 2015 and 2016 caused an increase in the biomass of algae. In the Turunchuk River in 2015, as a result of the water bloom caused by Bacillariophyta, the maximum biomass value was recorded for the entire observation period (413 g·m-3). In recent years, there has been a tendency towards an increase of the biomass of phytoplankton. A large amount of organic matter contributes to siltation of water bodies. The maximum calculated values of the active surface of phytoplankton index (PSI) is consistent with the hydrological conditions in the Dniester Delta (temperature and water level), and with the degree of eutrophication of water bodies. The performed PSI analysis allows us to evaluate the response of autotrophs to changes in climatic conditions, and to develop a scale of environmental status classes for freshwater phytoplankton.

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