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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

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