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Article
Saija Sirkia, Auteur ; Ari Nikula, Auteur ; Pekka Helle, Auteur ; Harto Linden, Auteur ; Kai Norrdahl, Auteur ; Petri Suorsa, Auteur ; Pentti Valkeajarvi, AuteurCapercaillie (Tetra urogallus) has traditionally been considered an old forest-dependent species. The lekking sites especially, were thought to be located in older forests. We studied the persistence of Capercaillie lekking areas in relation to [...]
Article
Saija Sirkia, Auteur ; Andreas Linden, Auteur ; Pekka Helle, Auteur ; Ari Nikula, Auteur ; Jonas Knape, Auteur ; Harto Linden, AuteurIn Finland, Capercaillie (Tetrao urogallus) populations have a history of serious decrease starting from the mid-20th century. The decline is temporally in line with the expansion of modern forestry practices that created major changes in the la[...]
Article
Patrik Byholm, Auteur ; Ari Nikula, AuteurHabitat composition is an important factor influencing nesting failure probability in birds. However, although various habitat effects such as fragmentation and edge density are known to have clear negative effects on the breeding success of pas[...]
Article
Tony R. Walker, Auteur ; Joachim Otto Habeck, Auteur ; Timo P. Karjalainen, Auteur ; Tarmo Virtanen, Auteur ; Nadia Solovieva, Auteur ; Viv Jones, Auteur ; Peter Kuhry, Auteur ; Vasily I. Ponomarev, Auteur ; Karl Mikkola, Auteur ; Ari Nikula, Auteur ; Elena Patova, Auteur ; Peter D. Crittenden, Auteur ; Scott D. Young, Auteur ; Tim Ingold, AuteurUsing interdisciplinary field research in the Usa Basin, northeast European Russia, we compared local inhabitants' perception of environmental problems with chemical and remote-sensing signatures of environmental pollution and their local impact[...]
Article
Saija Sirkia, Auteur ; Pekka Helle, Auteur ; Harto Linden, Auteur ; Ari Nikula, Auteur ; Kai Norrdahl, Auteur ; Petri Suorsa, Auteur ; Pentti Valkeajarvi, AuteurWe studied the effects of habitat loss, fragmentation and their interaction on the persistence of Capercaillie lekking areas at three study areas in Finland. We inspected a total of 381 leks twice with an interval of 10-30 years, and classified [...]
Article
Ilpo Kojola, Auteur ; Ville Hallikainen, Auteur ; Kari Mikkola, Auteur ; Eliezer Gurarie, Auteur ; Samuli Heikkinen, Auteur ; Salla Kaartinen, Auteur ; Ari Nikula, Auteur ; Vesa Nivala, AuteurLarge carnivorous mammals, such as the gray wolf (Canis lupus) have been recently expanding to human dominated landscapes in many regions. Although wolves tend to avoid human infrastructure, visitations close to human residences might be unavoid[...]
