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    STUDIA BIOLOGIA - Ediţia nr.2 din 2008  
         
  Articol:   BIRD SPECIES RICHNESS IN FIZEŞ PLAIN (CENTRAL TRANSYLVANIA, ROMANIA).

Autori:  ALIN DAVID, IOAN COROIU, MARIUS BĂRBOS. 		 
       
         
  Rezumat:  The aim of this study was to analyze the diversity of bird communities at landscape and habitat scale and to compare different habitat types according to the species richness. The study was carried out between 2002 and 2007 in the Fizeş Plain (central part of Transylvania). Four habitats types were studied (wetlands 2.19%, forests 16.5%, open areas 74.3% and human settlements 7.01%). Overall, 146 species were identified (gamma diversity) but only 108 (74%) are breeding in the area. The values of alfa and beta diversity show that wetlands are prior to conservation. The most habitat specialists has bees occurred in wetlands (27 species) and forests (26 species) and the largest number of breeding species has been identified in forests (52 species). The number of species inhabiting the four habitat types differs from the expected number. Pi index values reached its highest value in wetlands (0.9 and 0.85) and human settlements (0.62 and 0.67) and it shows negative values only in the open areas (-.28 and -0.49). All the obtained results indicate that the wetlands are of high importance sharping the species’ richness at landscape (Fizeş Plain) scale.

KEYWORDS: bird diversity, species richness, specialist birds, habitats, wetlands 		 
         
     
         
         
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