Measures for sustainable management of types ecosystems from suburban areas of Timisoara.

The bird populations from the plain forests (pedunculate oaks, Turkey oaks, Hungarian oaks and mixtures of Turkey and Hungarian oaks) of the western region of Romania, with altitudes from 100m to 300m, are represented by the families of bustards and colombidae, according to Radu, 1967. The periurban area of the city includes the forest ecosystem, represented by Padurea Verde, agroecosistem and ecotone areas. Agroecosystems are represented by agricultural crops (in the north, adjacent thoroughfares to Calea Aradului si Calea Torontalului and in the south Calea Sagului area), pastures (Freidorf area in the western side and in the south eastern the area of Calea Buziasului – Calea Mosnitei , aiming at a mixed grassland ecosystem, agricultural crops and residential areas). This paper aims to show a picture of the avifauna of these ecosystems heavily modified by humans, share the adaptability of species of birds in such habitats. The investigation method applied is based on the path method (Ferry and Frochot, 1958), improved through a statistical method processed by specialists from the Zoology Department of the Faculty of Chemistry, Biology and Geography of the Western University from Timisoara. ). During the three years of research, we found over 104 species. From the systematic point of view, the bird populations existing within Timisoara’s periurban area may be grouped in 15 orders and 32 families. These 104 species that we found, to which we may assign these marks: 20 absolute dominant species, 24 dominant species, 47 underdominant species; 21 incidental species We noticed that 12 species out of the 20 absolute-dominant species are mainly found within the agro-ecosystems, since these represent the preponderant surface in the periurban area. From the 104 species which have been found, 21 are protected by the appendixes of the European Council Directive no. 79/409 EEC regarding the preservation of the wild birds and 58 species are protected by the Washington Convention, the Law no. 69 as of July 15 th 1994, the Berne Convention, the Law no. 13 as of March 11 th 1933 regarding the adherence of Romania to the Convention concerning the preservation of the wild life and natural habitats in Europe, adopted in Bern in 1979; the Red list of the species from Romania, Bucharest 2000. All the other species do not require special preservation measures. Among the 21 species protected by the Directive regarding the birds protection (European Council Directive no. 79/409 EEC regarding the preservation of the wild birds, 20 species are protected strictly on the European level by means of the appendix no. I, 16 species are at risk and 4 species are vulnerable.