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Article

Density-dependent decline of breeding success in an introduced, increasing mute swan Cygnus olor population

P. Nummi, Auteur ; L. Saari, Auteur

Dans Journal of Avian Biology (34(1) MAR 2003)

An increasing population of the Mute swan Cygnus olor, was studied from its very establishment in 1976 until 1998. As the number of pairs increased, there was a decline in all production parameters, including the average number of clutches per p[...]

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Article

Environmental changes and population trends in breeding waterfowl in the northern Baltic Sea

M. T. H. Ronka, Auteur ; L. Saari, Auteur ; E. A. Lehikoinen, Auteur ; J. Suomela, Auteur

Dans Journal of Ornithology (147(5, Suppl. 1) AUG 2006)

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Article

Suitable habitat distribution for the Long-tailed Tit (Aegithalos caudatus) as indicated by the frequency of occurrence - a long-term study

G. Jansson, Auteur ; L. Saari, Auteur

Dans Ornis Fennica (76(3) 1999)

Data from 22 seasons were used to analyse the occurrence of Long-tailed Tits (Aegithalos caudatus) in relation to the habitat distribution in 26 one km-squares on the island Aasla in the SW archipelago of Finland. The one km-squares most frequen[...]

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