INVESTIGADORES
LAMMERTINK Jeroen Martjan
artículos
Título:
Population increase and habitat use of the Middle Spotted Woodpecker Dendrocopus medius in the Aran Valley, Spanish Pyrenees.
Autor/es:
ROMERO ROMERO JL; LAMMERTINK M; PÉREZ CAÑESTRO JP
Revista:
ARDEOLA
Editorial:
SOC ESPANOLA ORNITOLGIA
Referencias:
Año: 2013 vol. 60 p. 345 - 355
ISSN:
0570-7358
Resumen:
The middle spotted woodpecker Dendrocopos medius is
a scarce species in northern Spain and is listed as endangered in Catalonia. We
show a marked increase over a 24-year period in a population of the middle
spotted woodpecker in the Aran Valley in the eastern Pyrenees in Catalonia. The
population increased from two pairs in 1990 to 27 pairs in 2010, expanding
south and east into two arms of the valley. The estimated breeding density in
2010 was 0.22 pairs/10 ha. Out of 26 surveyed forests, 54% were occupied by the
woodpecker. There was no difference in occupancy rates between small, medium sized
or large forest areas. Breeding territories in mixed-deciduous forest were characterized
by the presence of large-diameter pedunculate oaks Quercus robur. We
conclude that the middle spotted woodpecker is expanding its range in the
Pyrenees, probably due to an increasing presence of mature oak forests. The
as-yet-small population size of the middle spotted woodpecker in northeastern
Spain, combined with its relatively low density, suggests that forest
protection measures should remain in place for this regionally vulnerable
species.