000			01408nam a2200181Ia 4500
003			MX-MdCICY
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040			_cCICY
090			_aB-14208
245	1	0	_aThe decline of the white stork Ciconia ciconia population of western Andalusia between 1976 and 1988: causes and proposals for conservation
490	0		_vBiological Conservation, 61(1), p.51-57, 1988
520	3		_aThe number of breeding pairs of white stork Ciconia ciconia in southwestern Spain declined by 11(percent)between 1976 and 1988. Population changes have, however, differed in the various biotopes inhabited by the species. The areas with greater human activity, such as urbanization and more intensive agriculture, are those in which population reductions have occurred. These are in the Guadalquivir river valley. In the sierra (mountains), where there has been little land-use change, the number of pairs has declined less markedly. The marshes, which are the most protected, are the only areas where there has been a population increase. This has, however, been insufficient to compensate for the decline in other areas.
700	1	2	_aSenra, A.
700	1	2	_aAiés, E.E.
856	4	0	_uhttps://drive.google.com/file/d/1VyeJ7Gh9HFF8lh8xUG8-F5sftbx8PEr4/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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