VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

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Preliminary data on Meledic-Manzalesti Reserve... / Ovidius University Annals, Biology-Ecology Series 14: 61-66 (2010) 45% 2% 6% 17% 1% 1% 14% 45% 14% T3 T3,5 T4 T4,5 T5 T0 T2 T2,5 T3 Fig.6. Ecological spectrum of temperature Soil reaction 37% of the identified species are euroionic (R0); poor acid-neutrophilic species (R4-R4,5) are presented in the same proportion; acid-neutriphilic species (R3-R3,5) can be found in a percentage of 21%, and the neutrophilic-basophilic (R5) are found only in a percentage of 3%. The balance of the acidophilic plants (R2) is just 2%, and those highly acidophilic (R1) are missing (Fig.7). 34% 2% 10% 3% 20% R3 R3,5 R4 R4,5 R5 R0 R2 30% Fig. 7. Ecological spectrum for soil reaction 4. Conclusions The flora in the reserve is highly diversified, being represented by the distribution of the species in 43 families, predominant being the families Fabaceae, Labiatae, Compositae. Hemicryptophyte (41%) appear in the highest percentage indicating the presence of the herbal evergreen species, adaptable to the edapho-climatic conditions in the areas. Therophites (20% + 4%) are 1% 66 plants mostly found in the northern regions, with an arid climate, and are presented in the reserve through the annual or biannual species. Phanerophytes (21%) presented by trees and scrubs, indicate the presence of forests in the reserve, as well as the cover of the slopes with scrubs which assure its stabilization. The analysis of the floristic elements reveals the predominant Euro-Asian elements, which along the central European totalize approximately 82 species (70%) from the reserve flora, representing the floristic background of the reserve. Floristic Mediterranean and Ponto Mediterranean elements, which are theomophilic species, can be found on the sunny slopes. The fact that the reserve in situated in a hill area can also be acknowledged because of the circumpolar and even alpine European species found here. The presence of xeromesophitic species (U2-U2,5) in a percentage that represents almost half of the total of the identified species in the reserve (42%), indicate a arid climate which is specially caracteristical for the medows. The mesophilic species (U3-U3,5 ), which have a pretty high percentage (37%), can be found in the areas where the light is scarce or it is excessively moisturized or in the areas where the swamps completely dry out during summer, but remain excessively moisturized. The mesothermal (T3-T3,5) along the mild thermophilic (T4- T4,5) are presented in a higher percentage, which mean that the climate in the reserve is a temperate continental one. Regarding the distribution according to the reaction of the soil, the euroionic species (R0) can be found in a pretty high percentage (34%), almost equal to those of the species and the poor acid-neutrophilic (R4- R4,5) (40%). Remarkable is also the presence of the acid-neutrophilic species (R3- R3,5) (21%) which have a percentage that is worth taking into account; the presence in the reserve of different types of habitats: rivers (with fresh and salt water), lakes, meadows, forests. Studies are to be done in the future to analyze the interesting and diverse flora of the region. 5. References [1] MOHAN GHE, ARDELEAN A., GEORGESCU M., 1993 - Rezervaţii şi monumente ale naturii din România, Casa de Editurã şi Comerţ, București, 201 pp.
Daciana Sava et al. / Ovidius University Annals, Biology-Ecology Series 14: 61-66 (2010) [2] BELDIE AL., 1977- Flora României - Determinator ilustrat al plantelor vasculare, vol. I- II, Editura Academiei R.S.R, 406 pp. [3] CIOCÂRLAN V., 2000 - Flora ilustratã a României, Editura Ceres, Bucureşti, 1138 pp. [4] DONIŢÃ N., IVAN D., 1975 - Metode practice pentru studiul ecologic şi geografic al vegetaţiei: 112-331, Editura Didacticã şi Pedagogicã, Bucureşti. [5] SANDA V., POPESCU A., DOLTU I., DONIŢÃ N., 1983 - Caracterizarea ecologicã şi fitocenologicã a speciilor spontane din flora României, “Ecological and phytocoenologyical characterisation of the spontaneous species in Romanian flora” in: Nat.Scienc.Suppl. 25, Stud.Communic. Muz. Brukental, Sibiu, 126 pp. 67
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VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

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