id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5901	LEITO, A.; TRUU, J.; ÕUNSAAR, M.	The impact of agriculture on autumn staging Eurasian Cranes (Grus grus) in Estonia	2008	10	.pdf	application/pdf	5811	307	67	The Eurasian Crane breeding populations and the numbers of autumn staging cranes increased simultaneously up to the 1980s; after that the rise in staging crane numbers stopped, although the breeding population has continued to grow up to the present day (Leito et al. 2003, 2006). We found a significant positive correlation be- tween the number of staging cranes and the crop- ping area of winter rye, winter wheat, summer wheat and all cereals combined, and a negative correlation between crane numbers and the crop- ping area of potato (Table 1).	cache/afs-5901.pdf	txt/afs-5901.txt