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Phytocoenotical biodiversity of forest protected areas of the Middle Prut valley


Author: Covali Victoria
Degree:doctor of biology
Speciality: 03.00.05 - Botany
Year:2009
Scientific adviser: Gheorghe Postolache
doctor habilitat, professor, Botanical Garden (Institute) of the ASM
Institution:
Scientific council:

Status

The thesis was presented on the 27 March, 2009
Approved by NCAA on the 18 June, 2009

Abstract

Adobe PDF document0.48 Mb / in romanian

Thesis

CZU 630*182(478)(043.3)+ 630*182:58(478)(043.3)

Adobe PDF document 6.19 Mb / in romanian
0 pages


Keywords

biodiversity, protected area, species, flora, geoelement, bioform, ecological category, rare plant, vegetation, phytocoenosis, association, arboretum.

Summary

The actual paper presents the results of floristic and phytocoenotic diversity investigations within 6 protected areas from Middle Prut meadows Valea Mare, Zberoaia-Lunca, Nemţeni, Dancu, Pogăneşti, Sărata-Răzeşi for conservation of plants diversity and sustainable use. As a result it was established that the floristic composition of protected areas includes 317 vascular plant species contained in 191 genus and 67 families. There were signaled 13 rare plant species which constitute 4,1% of the floristic background of the respective areas.

The analysis of floristic composition of protected areas from the point of view of bioforms discovers the domination of hemicryptophytes (50%) and fanerophytes (17%) and, from the geographic point of view, of Nordic elements (80%). From the ecological point of view the dominate mesophyles (49,27%), xero-mesophyles (26,25%), micro-mesothermes (74,19%), light acid-neutrophyles (38,61%), amphytolerants (32,2%) and acid-neutrophyles (29,39%), from the economic point of view there are evidenced medicinal (50,40%) and melliferous plants (43,25%).

For the first time, within the investigated protected areas, the phytocoenotical composition has been evidenced and established the сoenotaxonomical epitomes according to the Central European School of Phytocoenology methods. The plant communities from the protected areas are attributed to 4 vegetation types: forest, pratal, aquatic, paludal and, sinanthropical. The described phytocoenosis are comprised in 17 associations, 10 alliances, 9 categories and 8 classes. The most spread are the phytocoenosis of the Salicetum albae Issler 1926 and Salici-Populetum Meijer-Drees 1935 associations.

The protected areas arboreta are in major part naturally fundamental, diversified from the point of view of the specific composition, characterized through medium resistance towards the action of the environment factors.

Based on the obtained results there were obtained and elaborated vegetation maps and protected areas passports. In the view of optimizing the conservation regime of the biodiversity in the protected areas it is recommended the ecological reconstruction of non-corresponding arboreta of the station and promotion of the natural regeneration in the natural fundamental arboreta.

The research results in respect of the biodiversity, at the floristic and phytocoenotic level, display the presence of all the representative and rare elements which constitute the objective of protected areas conservation, confirming this way the importance at national and international levels for the protection of biological diversity.