The design of small water reservoirs in Slovakia and neighbouring countries has common origins in the middle of the last century. Most of them were an alternative source of water for irrigation of field crops. Nowadays, we have to face new problems, such as the problems with the design of hydrological data and real current discharges, the problems with original and new design of the flood wave for the solution of the safety overflow. All of Q 100 flows recorded nowadays are much higher than those which had been designed and built. The safety overflows no longer answer the purpose of the contemporary flows. The problems with the Framework Directive are also importantsmall water reservoirs are not resolved in the Directive as the water bodies of stagnant water because they have an area of less than 0.5 km 2. The same problem is also with the preservation of continuity of the flow and the fact that they should let the fish pass. Unfortunately, the state, administrators of small dams, operators and nature conservationists have different points of view on the above-mentioned problems. The article elaborates these problems and suggests possible solutions to the problems.

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Abstract:Agricultural land is an important natural resource and the wealth of each country; in addition it is one of the main production factors, especially for the agricultural businessmen. Th at is a reason that state law makers adopt the legal regulations which are able to protect this unique natural resource and prefer using the land mainly for the agricultural purposes. Th e Slovak law makers have followed also such objectives by adoption of the Law No. 140/2014 Coll. on the acquisition of ownership of agricultural land and amending and supplementing certain laws. Th e paper analyses the economic and legal impacts of this law on the agricultural market in Slovakia with the regard to the presented land protection as the objective of the new legal regulation.

Land as a significant natural resource becomes an object of competition on the agricultural land market. The price of agricultural land plays an important role in its acquisition. The process of price formation is influenced by many factors. The aim of the paper is to identify the most significant of them by the econometric model applied on data from the Register of Offers of Agricultural Land. The most significant factors are proportion of the offered area on the total area of the plot and the location of agricultural land with the positive effect on the land price as well as the offered plot area and the distance of the offered plot from a district city with the negative impact on the land price. However, the verification of the correctness of this assumption remains questionable for the present as it is not resolved how to measure and quantify the landowner's subjectivity.

Di-(2-hydroxy-l-phenazinyl)methane, Phenazines, Bacterial Constituents, Pseudomonas aureofaciensThe structure elucidation of di-(2-hydroxy-l-phenazinyl)methane from Pseudomonas aureofaciens is described. In addition to the phenazine derivatives isolated earlier from this bacterium 2,3,4-trihydroxyphenazine-l-carboxylic acid and phenazine-1,6-dicarboxylic acid could be identified.