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Buletinul AŞM. Ştiinţele vieţii. Nr. 2(317) 2012 Abstracts ALGA DUNALIELLA SALINA CNMN-AV-01. Bivol Cezara, Lazarescu Ana, Turtă Constantin, Rudic Valeriu. // Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele vieţii. 2012, No 2 (317), p. 149-154. Cultivation of green microalga Dunaliella salina CNMN-AV-01on an organic mineral medium prepared on the basis of spirulina cultural liquid and supplemented with coordination Fe(III) compounds with glycine and alanine α-amino acids ensures increase in the chlorophyll a content compared to chlorophyll b and enhancement of carotenoid pigments as compared to the total chlorophyll. The stimulatory effect intensifi es with the increase of the compound concentration, the highest stimulatory action is observed at the concentration of 10 mg/l. 23 references, 1 table, 3 fi gures. Keywords: Dunaliella salina - coordination Fe(III) compounds - photosynthetic pigments. Received May 08, 2012 UDC: 502.3/.7+ 579.6 MICROBIOLOGICAL STATUS OF TYPICAL CHERNOZEM IN LONG-TERM EXPERIMENTS WITH FIELD CROPS. Mereniuc Gh., Corcimaru S., Tanase A., Boincean B., Bugaciuc M. // Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele vieţii. 2012, No 2 (317), p. 154-160. A substantial biological degradation surpassing the rates of soil organic matter degradation was revealed in the soils of the Republic Moldova. The soil microbial complex in the experimental plots suffered substantial negative quality and quantity changes refl ected in decreases of the total microbial biomass and microbial quotient and in abrupt increase of the metabolic quotient. The least favorable conditions were observed in the soil of conventional crop rotations, and the most favorable ones - in the soil of ecological rotations. 7 references, 4 fi gures. Key words: soil microorganisms - soil degradation - long-term fi eld experiments - sustainable agriculture. Received March 27, 2012 UDC: 576. 8 STANDARTIZATION OF THE CONSERVATION METHOD FOR BACTERIA STRAINS FROM THE NATIONAL COLLECTION OF NONPATHOGENIC MI- CROORGANISMS. I. STANDARTIZATION OF THE CONSERVATION METHOD FOR PSEUDOMONAS STRAINS FROM THE NATIONAL COLLECTION OF NON- PATHOGENIC MICROORGANISMS. SlaninaV., Lupaşcu L., Tolocichina S., Burtseva S., Postolachi O., Sirbu T., StepanovV., Chiseliţa O. // Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele vieţii. 2012, No 2 (317), p. 160-167. It was demonstrated that the King B nutrient medium and meat peptone broth ensure a suffi cient cell density necessary for successful lyophilization of bacteria of the genus Pseudomonas. Optimal parameters for lyophilization of Pseudomonas bacteria were identifi ed. It was established that lyofi lization on protective media, skim milk (LD) + sucrose 10.0% (Z 10%) and sodium succinate (Succ.Na) + 12.0% sucrose (Z 12%), at a freezing temperature (-20 o C) and revitalization with distilled water ensure a high level of Pseudomonas bacterium viability. 22 references, 5 fi gures. Keywords: freeze-drying - nutrient medium - protective medium. 22 references, 5 tables. Received March 27, 2012 UDC: 911.52(478:282.243.758)+502.7(478:282.243.758) METHODS OF LANDSCAPE ANALYSIS. MIDDLE PRUT RIVER PLAIN CASE STUDY. Boboc N., Bejan Iu., Castraveț T., Muntean Valentina, Țîțu P. // Buletinul Academiei 198
Buletinul AŞM. Ştiinţele vieţii. Nr. 2 (317) 2012 Abstracts de Ştiinţe a Moldovei. Ştiinţele vieţii. 2012, No 2 (317), p. 167-177. The purpose of this paper was to develop the principles and criteria for identifi cation, classifi cation and mapping of the landscape systems of the Middle Prut River Plain, a territorial unit which has a considerable landscape diversity. The methodology for analysis of landscapes as systemic units is based on identifi cation of geographical spatial structures. Remote sensing techniques were used as a means for analysis. The identifi cation and mapping of landscapes was done by modeling of environmental components, and the modeling results were integrated into a geographic information system. The limits of landscape units were traced mainly along the thalwegs of the valleys, riverbeds or limits of fl oodplain and river terraces. In addition, the boundaries were drawn at interfl uvial peaks and saddles, in both cases taking into account the characteristics of soil, geologic substrate, land cover, etc. 24 references, 1 table, 5 fi gures Keywords: natural landscape – cultural landscape – landscape identifi cation methodology –Middle Prut River Plain Received May 10, 2012 UDC 504.75.05 : 64 (478-25) ASSESSMENT OF WASTE IMPACT ON THE CHISINAU URBAN ECOSYSTEM (INDICES, RELATIONS, AND REGULARITIES). Bulimaga C. // Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţele vieţii. 2012, No 2 (317), p. 177-185. The research on the relation between the pollutant mass contained in the Bic River water and its volume has resulted in establishment of a regularity due to which the pollutant mass introduced to the city by the Bic River water, discharges to the river from the Chisinau City surface, and the water volume evacuated from the urban area depend on the water volume, while it correlates with the atmospheric precipitation amount. The studies on the negative waste impact, assessed by determination of the fl oristic algae diversity according to Margalef allowed the establishment of a regularity of the dependence of this index on the pollution degree in the section investigated. The studies on the negative waste impact on ecosystems revealed a regularity of the dependence of the negative impact value on the pollution level in this section. 16 references Keywords: impact - impact dynamic – waste - similarity index - vascular plants. Received May 03, 2012 199
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ARTICOLE DE FOND

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