| الملخص: | Unique marshland area in the Danube floodplain - Special Nature Reserve
Gornje Podunavlje is considered to be one of the last aquatic flora and
fauna refuges in the region. The revitalization projects in SNP Gornje
Podunavlje started in 2011. They were conducted in order to protect
biodiversity and to provide the natural ecosystem. The aim of this study was
to investigate and compare the present diversity and distribution of the
charophytes in five ponds of SNR Gornje Podunavlje, depending on phases of
the revitalization process within the ponds. The researched area includes
the following ponds: Semenjača, Šarkanj, Široki rit, Sakajtaš and Ribolov.
The Široki rit pond was under the process of revitalization during the field
surveys, Semenjača and Šarkanj have already been revitalized, and Ribolov
and Sakajtaš were not exposed to the revitalization processes at all. The
field surveys were conducted monthly, from May to September 2016. Water
quality parameters were measured in situ and in laboratory. Ponds differed
considerably when it comes to water chemistry; Semenjača and Šarkanj were
associated with highest nutrient concentrations, while Široki rit was
characterized by highest conductivity and water hardness. The highest
diversity was found in Široki rit pond, which was still in process of
revitalization when the field survey was conducted. Charophytes were not
detected within previously revitalized ponds (Semenjača and Šarkanj). Eight
species of charophytes were detected: Chara contraria, Chara globularis,
Chara tenuispina, Chara vulgaris, Nitella confervacea, Nitella gracilis,
Nitella syncarpa and Tolypella prolifera. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. OI 176020]
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