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Nietypowo śpiewające ortolany Emberiza hortulana w Wielkopolsce

100%
Jakubowska A., Losak K., Osiejuk T. S.
Ornis Polonica
|
2015
|
tom 56
|
nr 4
2

Ortolan Emberiza hortulana

100%
Sachanowicz K.
Ptaki. Biuletyn Ogólnopolskiego Towarzystwa Ochrony Ptaków
|
2003
|
nr 4
25
3

Recognition of individuals by song, using cross-correlation of sonograms of Ortolan buntings Emberiza hortulana

86%
Osiejuk T. S.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 1
4

Recognition of individuals of Ortolan bunting Emberiza hortulana using image processing procedures

86%
Kuczynski L.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 1
5

Habitat preferences and spatial overlap between three species of bunting (Emberiza hortulana, Emberiza cirlus, Militaria calandra) in farmlands of Central Italy

72%
Morelli F., Pruscini F., Santolini R.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 2
Buntings species are mainly associated to agricultural landscapes and constitute a high conservation concern because farmlands are ecosystems subject to rapid changes and may cause the loss of animal species in just a few years.We studied the occurrence of Ortolan Bunting, Cirl Bunting and Corn Bunting (Emberiza hortulana, Emberiza cirlus, Miliaria calandra) on farmlands of Central Italy, considering the land-use composition, crop typologies and several structural parameters of environment occupied by these species, as presence of power lines, road type and Shannon biodiversity index of landscape. Furthermore the geographical overlap among the three bunting species was studied, in order to find witch species show an habitat overlap.The study was carried out in central-eastern Italy, between the end of April and mid-July 2010, through 159 sampled sites, uniformly distributed on in the study area.Cirl Bunting is the most widespread species of Bunting in the farmlands that were studied. Ortolan Bunting and Corn Bunting are the two species with greater spatial habitat overlap, even though land-use composition in their territories was different. However, Ortolan Bunting can be found at a lower altitude range than Corn Bunting (less 550 m a.s.l.) and it is associated to territories with minor landscape heterogeneity. Preferences by crop types seem to be a possible cause of the spatial habitat overlap between Ortolan and Corn Bunting (both species had selected sugar beet, and coriander, avoiding mainly vegetables, vineyards and orchards). On the other hand, Cirl Bunting was less related to crop types.
6

Changes of Ortolan bunting (Emberiza hortulana L.) habitats and implications for the species presence in SE Moravia, Czech Republic

72%
Skokanova H., Havlicek M., Unar P., Janik D., Simecek K.
Polish Journal of Ecology
|
2016
|
tom 64
|
nr 1
The study focuses on the changes of Ortolan Bunting (Emberizia hortulana L.) habitats, which occurred during the last 20 years, and the implications of these changes for the presence of the species population in south-eastern Moravia, Czech Republic. The research was based on aerial photographs and field work. We have identified habitats that were favoured by Ortolan Bunting in the study area on the basis of expert knowledge and by spatial analysis. We found that these habitats experienced statistically significant decline in their area. The decline was steeper in the region where Ortolan Bunting occurred only in the 1990s and was smaller in the region where the bird was present from late 1990s till 2012. However, our analyses did not confirm direct relationship between the habitat changes and the decline of Ortolan Bunting population, i.e. we did not find that decline of favourable habitat significantly affected decline of the species population. The main reasons for the decrease of favourable habitats in the study area are changes in agricultural practices, especially spread of mechanisation that have caused an increase in the size of fields and a drastic reduction of groups of trees and solitary trees. Additionally, widespread grassing of vineyards and other plots as a result of integrated and organic farming contributed to the decrease of favourable habitats. Practices in the form of planting new trees and leaving parts of managed land bare to be used for mitigating the decline of the bird population were discussed.
7

Preferencje siedliskowe wybranych gatunków ptaków charakterysycznych dla zadrzewień krajobrazu rolniczego

58%
Kniola T.
Biuletyn Parków Krajobrazowych Wielkopolski
|
2019
|
tom 26
8

Stan i zagrozenia polskiej populacji ortolana Emberiza hortulana na tle sytuacji gatunku w Europie

58%
Kuzniak S., Dombrowski A., Golawski A., Tryjanowski P.
Notatki Ornitologiczne
|
1997
|
tom 38
|
nr 2
141-150
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