Black-winged Pratincole - AEWA
Black-winged Pratincole - AEWA
Black-winged Pratincole - AEWA
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<strong>AEWA</strong> Technical Series No. 4<br />
3. Indirect quality-limiting factors<br />
3.1. Use of pesticides -2 0 -3 -3 -2 -1 -2 -2 -1 -2 -1 -2 0 -1 -2 -2 -1,5<br />
3.2. Stopped grazing and overgrowing of<br />
pastures<br />
+4<br />
0 -2 +2 0 -3 -2 -3 -2 -3 -2 -3 -2 -2 -2 -3 -2,5<br />
3.3. Spreading of fallow lands,<br />
overgrowing of arable fields<br />
+2 +1 0 -2 -0,3 -2 +1 +1 +1 -3 0 0<br />
+2 -2 +2 -1 -0,1<br />
3.4. Disappearance of water bodies<br />
(reservoirs, ponds etc.)<br />
0 0 0 0 0 -2 -2 -3 0 -4 0 0 0 0 0 0 -1,0<br />
4. Natural limiting factors<br />
4.1. Change of a climate -1 0 0 0 0 -3 0 0 -2 0 0 0 -2 -2 0 -1 -0,9<br />
4.2. Meteorological anomalies -3 -1 -1 0 -0,7 -2 -2 -2 -1 0 -1<br />
-1 0 -3 -1 -1 -1,3<br />
4.3. Expansion and number increase of<br />
preying corvids<br />
-2 -1 -2 -3 -2 -3 -2 -2 -2 -3 0<br />
-2 -2 -2 -1 -2 -1,9<br />
4.4. Influence of ground predators -4 -2 0 -2 -1,3 -1 -3 -2 -1 -3 0<br />
-1 -2 -2 -1 -3 -1,7<br />
4.5. Hybridisation and assimilation by the<br />
Collared <strong>Pratincole</strong><br />
-2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0<br />
International Single Species Action Plan for the Conservation of the <strong>Black</strong>-<strong>winged</strong> <strong>Pratincole</strong> 39