| Titre : | Ornis Fennica 79(2) - 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
K. Overskaug, Auteur ;
I. J. Oien, Auteur
Article
G. Leonardi, Auteur
Article
J. C. Franson, Auteur ;
T. Hollmen, Auteur ;
M. Hario, Auteur ;
M. Kilpi, Auteur ;
D. L. Finley, Auteur
Article
A. Sorace, Auteur
A low abundance of predators has been considered an important factor influencing a number of ecological phenomena in urban environments including, in particular, the high population density of some bird and pest species. A low abundance of preda[...]
Article
P. Milberg, Auteur ;
L. Gezelius, Auteur ;
I. Blindow, Auteur ;
L. Nilsson, Auteur ;
T. Tyrberg, Auteur
We analysed data from 25 years of standardised mid-September counts of waterfowl at eutrophic Lake Takern, southern Sweden. For eight species, counts were compared with a national index constructed from similar counts at numerous lakes and coast[...]
Article
M. Risch, Auteur ;
M. W. G. Brinkhof, Auteur
Evolutionary theory predicts that variation in parental quality in sexually dimorphic species may lead to biased brood sex ratios, because of differences in the costs and benefits of raising male or female offspring with resource availability. W[...]
