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Documents disponibles écrits par cet auteur (14)
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Article
Hannu Tikkanen, Auteur ; Fabio Balotari-Chiebao, Auteur ; Toni Laaksonen, Auteur ; Veli-Matti Pakanen, Auteur ; Seppo Rytkönen, Auteur
Article
Ville Vasko, Auteur ; Toni Laaksonen, Auteur ; Jari Valkama, Auteur ; Erkki Korpimäki, AuteurCosts and benefits of dispersal can vary in space and time, depending on environmental factors and individual state. Plastic, condition-dependent dispersal strategies, in which individuals rely on external cues such as food abundance to adjust t[...]
Article
Markus P. Ahola, Auteur ; Toni Laaksonen, Auteur ; Tapio Eeva, Auteur ; Esa Lehikoinen, Auteur1. Climate change could affect resource competition between resident and migratory bird species by changing the interval between their onsets of breeding or by altering their population densities. 2. We studied interspecific nest-hole competitio[...]
Article
Kalle Rainio, Auteur ; Toni Laaksonen, Auteur ; Markus Ahola, Auteur ; Anssi V. Vahatalo, Auteur ; Esa Lehikoinen, AuteurLarge-scale climate fluctuations, such as the North Atlantic Oscillation (NAO), have a marked effect on the timing of spring migration of birds. It has however been suggested that long-distance migrants wintering in Africa could respond less to [...]
Article
Natalia Pitala, Auteur ; Suvi Ruuskanen, Auteur ; Toni Laaksonen, Auteur ; Blandine Doligez, Auteur ; Barbara Tschirren, Auteur ; Lars Gustafsson, AuteurHormone-mediated maternal effects may be an important mechanism for adjusting offspring phenotype to particular requirements of the environment. We manipulated the levels of testosterone and androstenedione in the yolk of collared flycatcher Fic[...]
Article
Andrea Santangeli, Auteur ; Ralf Wistbacka, Auteur ; Ilpo K. Hanski, Auteur ; Toni Laaksonen, AuteurUnsustainable use of forest resources is causing dramatic changes in the landscape and poses a serious threat to biodiversity worldwide. This threat is becoming increasingly tangible in boreal biomes, especially in regions where intensive produc[...]
Article
Toni Laaksonen, Auteur ; Harri Hakkarainen, Auteur ; Erkki Korpimäki, Auteur
Article
Maternal transfer of androgens in eggs is affected by food supplementation but not by predation risk
Chiara Morosinotto, Auteur ; Robert L. Thomson, Auteur ; Suvi Ruuskanen, Auteur ; Erkki Korpimäki, Auteur ; Esa Lehikoinen, Auteur ; Erich Mostl, Auteur ; Toni Laaksonen, AuteurMothers may affect the future success of their offspring by varying allocation to eggs and embryos. Allocation may be adaptive based on the environmental conditions perceived during early breeding. We investigated the effects of food supplementa[...]
Article
Toni Laaksonen, Auteur ; Aleksi Lehikoinen, AuteurWhen many environmental changes take place simultaneously, one of the first challenges for conservation efforts is to identify the species and environments that are in the most need of conservation measures. We studied whether there are differen[...]
Article
Fabio Balotari-Chiebao, Auteur ; Alexandre Villers, Auteur ; Asko Ijas, Auteur ; Otso Ovaskainen, Auteur ; Sari Repka, Auteur ; Toni Laaksonen, AuteurThe presence of poorly sited wind farms raises concerns for wildlife, including birds of prey. Therefore, there is a need to extend the knowledge of the potential human-wildlife conflicts associated with wind energy. Here, we report on the movem[...]
Article
Chiara Morosinotto, Auteur ; Suvi Ruuskanen, Auteur ; Robert L. Thomson, Auteur ; Heli Siitari, Auteur ; Erkki Korpimäki, Auteur ; Toni Laaksonen, AuteurPredation risk is an environmental stressor that can induce changes in prey behavior and physiology. Perception of predation risk may indirectly affect offspring traits and future fitness prospects via impacts on the condition of parents. Female[...]
Article
Suvi Ruuskanen, Auteur ; Toni Laaksonen, AuteurThe hormonal environment during early development, such as maternally derived androgens in bird eggs, has been shown to shape offspring in ways that may have important short- and long-term consequences for phenotype and behavior. However, studie[...]
Article
Alejandro Cantarero, Auteur ; Toni Laaksonen, Auteur ; Pauliina E. Jaervistoe, Auteur ; Jimena Lopez-Arrabe, Auteur ; Diego Gil, Auteur ; Juan Moreno, AuteurIn a substantial number of species, females show some development of secondary sexual characters. These traits can function as signals of individual phenotypic or genetic qualities and status to conspecifics. Individuals may benefit potentially [...]
Article
Judith Morales, Auteur ; Suvi Ruuskanen, Auteur ; Toni Laaksonen, Auteur ; Tapio Eeva, Auteur ; Rafael Mateo, Auteur ; Eugen Belskii, Auteur ; Elena V. Ivankina, Auteur ; Antero Järvinen, Auteur ; Anvar Kerimov, Auteur ; Erkki Korpimäki, Auteur ; Indriķis Krams, Auteur ; Raivo Maend, Auteur ; Chiara Morosinotto, Auteur ; Markku Orell, Auteur ; Anna Qvarnstrom, Auteur ; Heli Siitari, Auteur ; Fred M. Slater, Auteur ; Vallo Tilgar, Auteur ; Marcel E. Visser, Auteur ; Wolfgang Winkel, Auteur ; Herwig Zang, Auteur ; Juan Moreno, AuteurThe expression and impact of maternal effects may vary greatly between populations and environments. However, little is known about large-scale geographical patterns of variation in maternal deposition to eggs. In birds, as in other oviparous an[...]
