Structure of the breeding bird assemblages in the fields with wheat (northeastern Slovenia). - M. Vogrin, Miklic A. - Berkut. 13 (2). 2004. - P. 189-192.
Qualitative research on breeding birds was carried out in six fields with wheat located in an agricultural area in the northeastern Slovenia. Eight species were found breeding on the fields. The density of birds in the fields studied ranged from 0.6 to 6.1 pairs/10 ha. The differences between fields according to bird biomass is not significant (Kruskal-Wallis test = 4.59, df = 5, P > 0.05). Number of species and bird density were not dependent from the area (r = 0.59 and r = 0.43 respectively) neither from the relative edge length (rS = –0.59 and rS = – 0.43 respectively). Significant correlation between diversity index and the logarithm of fields area was not found (r = –0.13). The number of species increased significantly with increasing bird density (rS = 0.94, P < 0.01). [English].
Key words: Slovenia, intensive fields, wheat, breeding birds.
Address: M. Vogrin, Zg. Hajdina 83c, SI-2288 Hajdina, Slovenia; e-mail: milan.vogrin@guest.arnes.si.
A. Miklic, University of Ljubljana, Biotechnical Faculty, Ljubljana, Groblje 3, SI-1230 Domzale, Slovenia;
e-mail: andreja.miklic@bfro.uni-lj.si.