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1

Cyanobacterial blooms in oligosaline and alkaline microaccumulation before and after rehabilitation

100%
Dordevic N. B., Simic S. B.
Polish Journal of Environmental Studies
|
2014
|
tom 23
|
nr 6
This work describes the occurrence and blooming of some Cyanobacteria in an artificial, oligosaline, alkaline, microaccumulation in Serbia, which was formed on salines in 1963-64, and rehabilitated in 2009-10. The appearance and specific blooming of species common for tropical regions in Aleksandrovac Lake (N 42º29’22”, E 21º53’54”) before reconstruction (Cylindrospermum stagnale (Kützing) ex Bornet et Flahault, Synechococcus lividus Copeland, Chrysosporum bergii (Ostenfeld) Zapomělová et al., Anabaenopsis elenkinii Miller, Lyngbya aestuarii (Mertens) Liebman ex Gomont) and after reconstruction (Cylindrospermopsis raciborskii (Woloszińska) Seenayya et Subba Raju, Chrysosporum bergii, Anabaenopsis elenkinii, as well as Glaucospira sp. Lagerheim) was recorded for the first time in Serbia. The work also demonstrates the potential hazard to the environment (fishkill) due to the presence of specific blooming of Cyanobacteria. Alkaline salt ponds and lakes with extreme ecological conditions are places suitable for the development of alien and potentially invasive species.
2

Prioritization of soil erosion vulnerable areas using multi - criteria analysis methods

71%
Vulevic T., Dragovic N., Kostadinov S., Simic S. B., Milovanovic I.
Polish Journal of Environmental Studies
|
2015
|
tom 24
|
nr 1
Soil erosion caused by natural or anthropogenic factors represents a widespread problem with a range of negative environmental consequences. Various measures and works are being carried out to mitigate and prevent the direct and indirect effects of erosion. These actions often cannot be implemented in a whole region prone to erosion due to limited financial or human resources. Therefore, identifying the area that requires particular attention for conservation is necessary. The objective of this paper was to determine the most vulnerable areas (sub-watersheds) to soil erosion in the Topčiderska River Watershed, located in northern Serbia, using available data: land use, soil characteristics, and mean watershed slope. Using such multi-criteria decision analysis methods as analytic hierarchy process (AHP) and technique for order preference by similarity to ideal solution (TOPSIS), the most vulnerable sub-watersheds were determined for three different scenarios. The results show a strong correlation between the ranking based on AHP method and TOPSIS method. It is observed that the most vulnerable sub-watersheds are characterized by the significant presence of arable land and very steep slope and thus have priority for conservation.
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