Habitat preferences of the Montagu’s Harrier (Circus pygargus) in agricultural land of Opava region in 2015

Abstract

In 2015, 13 nesting pairs of the Montagu’s Harrier (Circus pygargus) (density 4.6 pairs / 100 km2) were found within the study area of 280 km2 (Opava District). Four pairs successfully bred and raised 11 fledglings. We did not prove any relation between their success rate and the distance of a nest to the nearest building, road, or grove. Either altitude or field area, where a nest was recorded, apparently was not determinative. Three of the successful nests were found in fields with above-average area, but the fourth one was placed in the smallest field. In the surroundings of successful nests, a below-average ratio of winter wheat and high
ratio of winter barley and maize were found. Two of the successful nests were in close proximity to each other; it is then possible that nests in a semi-colony can have a higher chance of survival. Within the whole area, no semi-colonial nesting of more than two pairs in close proximity was recorded.

Full text

Biotopové preference motáka lužního (Circus pygargus)
v zemědělské krajině Opavska v roce 2015
Habitat preferences of the Montagu’s Harrier (Circus pygargus)
in agricultural land of Opava region in 2015
Veronika ZAVADILOVÁ1 & Patrik MOLITOR2
1 Petra Bezruče 102, 747 24 Chuchelná; e-mail: zavadilova.ver@seznam.cz
2 Stará Ves u Bílovce 10E, 743 01 Bílovec; e-mail: patrik.molitor@seznam.cz
ÚVOD
Circus pygargus-

-
-
      


       -
      
-
       


          

POPIS PROSTŘEDÍ
           
           



-


  Triticum aesti-
vumHordeum vulgareBrassica napus
Beta vulgarisZea maysPapaver somniferum
Avena sativaSecale cereale
Acrocephalus (Ostrava) 30 (2015): 45–52


METODIKA A MATERIÁL
          
  
     -
          -

-

-

           -
            



-


VÝSLEDKY
-


 
-


-

-

-
       -
  
             
-

            
-

     


     




 
Circus pygargus
Table 1: Overview of measured values of particular nesting sites of the Montagu’s Harrier
() in the Opava region in 2015
Id NMV
[m n. m.]
RP
[ha]
H
[m]
B
[m]
S
[m]
PC
[m]
R
[m]
1      
2      
3      
4      
5      
6      
7      
8      
9      
10     
11     
12     
13     
Průměr
Mean 292,9 37,2 2257,7 721,1 581,1 215,6 531,5
 Explanatory notes  altitude 
area of the eld where the nesting site was located-
 distance to the other nearest nesting site
distance to the nearest buildingdistance to the nearest road
distance to the nearest unpaved road
distance to the nearest grove
 
Circus pygargus
Table 2: Percentage of agricultural land and particular crops in the 500-m radius from
the Montagu’s Harrier () nesting sites in the Opava region in 2015
Id Podíl Percentage [%]
ZP OP OJ KS ŘC BŘ ŽS OS TV MS
1    
2    
3     
4   
5    
6  
7    
8 
9   
Průměr
Mean 91,4 76,4 9,8 15,9 9,3 9,7 0,0 1,4 0,0 9,6
Explanatory notes to table 2 and 3agricultural land
winter wheatwinter barleycorn
sugar beetrapeseedcereal rye
oatalfalfapoppy



-

 
-


DISKUSE

            
              

  
 -



-
      –
 -

   
   -
      



 
Circus pygargus
Table 3: Percentage of agricultural land and particular crops in the 1,500-m radius from
the Montagu’s Harrier () nesting sites in the Opava region in 2015
Id Podíl Percentage [%]
ZP OP OJ KS ŘC BŘ ŽS OS TV MS
1       
2      
3      
4       
5      
6     
7     
8     
9     
Průměr
Mean 76,7 54,2 11,6 14,2 9,6 9,6 0,5 0,2 2,1 1,5

        -
             
              
              
              
-
        

-
-





            

           











      
            



-





 







           

-

    
              


-

et 
            
       
-
-
-

PODĚKOVÁNÍ
         
    
       
 Circus pygargus

SOUHRN
-
Circus pygargus   

-


-

-


SUMMARY
’Circus pygargus
) -











ZDROJE
Mapy charakteristik klimatu
<>.
Fauna ČR: sv. 29/1: Ptáci – : díl II/1

Circus pygargus
Acta Zoologica Lituanica

         Circus pygargus)
       Ptáci kolem nás   

Circus pygargus
Sluka
       Circus pygargus  
Tichodroma
Circus pygargus
Sluka

      
Circus pygargusZpravodaj SOVDS
Metody monitoringu druhů přílohy I směrnice
ES o ptácích: moták lužní ()

           
Circus pygargusCrex – Zpravodaj Jihomoravské po-
bočky ČSO . 


Circus pygargusZpravodaj SOVDS




Circus pygargusZpravodaj
SOVDS
       
Circus pygargusSylvia



           
Circus pygargusAcrocephalus (Ostrava)
 Circus pygargus 
Buteo
Atlas hnízdního rozšíření ptáků v České republice
1985–1989
Atlas hnízdního rozšíření ptáků v České republice
2001–2003
  Circus py-
gargusBelgian Journal of Zoology
