Factors affecting occurrence of red-backed shrike (Lanius collurio) and lesser grey shrike (Lanius minor) in low-intensify agriculture areas from Eastern Europe
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2018-09-18 12:45
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AJDER, Vitalie, BALTAG, Emanuel. Factors affecting occurrence of red-backed shrike (Lanius collurio) and lesser grey shrike (Lanius minor) in low-intensify agriculture areas from Eastern Europe. In: Polish Journal of Ecology, 2017, vol. 65, pp. 285-294. ISSN 1505-2249. DOI: https://doi.org/10.3161/15052249PJE2017.65.2.010
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Polish Journal of Ecology
Volumul 65 / 2017 / ISSN 1505-2249

Factors affecting occurrence of red-backed shrike (Lanius collurio) and lesser grey shrike (Lanius minor) in low-intensify agriculture areas from Eastern Europe

DOI:https://doi.org/10.3161/15052249PJE2017.65.2.010

Pag. 285-294

Ajder Vitalie12, Baltag Emanuel1
 
1 Alexandru Ioan Cuza University of Iaşi,
2 Institute of Ecology and Geography of the ASM
 
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Disponibil în IBN: 20 februarie 2018


Rezumat

Shrikes represent an important group of farmland bird species which inhabit open habitats where they prey on invertebrates and small vertebrates. Like the other farmland birds, shrikes are in the decline across their breeding range. During the 2014 breeding season, we conducted point observations in 470 locations in the Republic of Moldova, recording all the shrike individuals that were seen during 5 minutes. The highest density has been recorded for the red-backed shrike Lanius collurio, (0.489–0.652 breeding pairs ha-1) while for lesser grey shrike Lanius minor the density is ten times lower (0.042–0.076 breeding pairs ha-1). These two shrike species select pasture areas for breeding and avoid artificial surfaces, forests and wetlands. Regarding the geomorphological variables, red-backed shrikes and lesser grey shrikes prefer areas of a low, flat ground and aspects with low exposure to the sun radiation. According to the General Linear Model analyses, the red-backed shrike distribution is significantly influenced by percentage of arable land and orchards, while for lesser grey shrike we did not find any significant influence of environmental variables studied.

Cuvinte-cheie
Breeding ecology, Farmland birds, Habitat selection, Republic of Moldova