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Documents disponibles écrits par cet auteur (11)
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Article
E. Korpimäki ; H. Rita 1996Ecoscience 3 p264-273
Article
USDA Forest Service ? (USA) p152-156* General Technical Report RM-142
Article
K. L. Wiebe, Auteur ; K. I. Jonsson, Auteur ; J. Wiehn, Auteur ; H. Hakkarainen, Auteur ; E. Korpimäki, AuteurTo investigate time, energy, and temperature constraints on hatching asynchrony in Eurasian Kestrels (Falco tinnunculus), we observed females during the laying period and quantified the time spent hunting to see whether this might limit time spe[...]
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E. Korpimäki, Auteur ; R. L. Thomson, Auteur ; V. Vasko, Auteur ; T. Laaksonen, Auteur
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E. Korpimäki, Auteur ; C. A. May, Auteur ; D. T. Parkin, Auteur ; J. H. Wetton, Auteur ; J. Wiehn, AuteurVariation of brood sex ratio was studied in a Finnish population of Eurasian Kestrels Falco tinnunculus breeding in an unpredictably variable environment. From those young that survived until 2-4 weeks of age, blood was collected and their sex d[...]
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R. Tome, Auteur ; N. Santos, Auteur ; P. Cardia, Auteur ; N. Ferrand, Auteur ; E. Korpimäki, AuteurWe studied the relationships between occurrence of blood parasites and host traits in a wild population of Little Owls Athene noctua in Mediterranean habitats of southern Portugal. Of 39 owls captured between February and August 1999,16 (41.0%) [...]
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K. Norrdahl, Auteur ; E. Korpimäki, AuteurThe abundances of potential avian prey species may be lower in the vicinity of the nests of predatory birds than farther away. We predicted that, if this density depression is due to predation, the observed density pattern should develop gradual[...]
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S. Massemin, Auteur ; E. Korpimäki, Auteur ; V. Poyri, Auteur ; T. Zorn, AuteurHatching asynchrony in altricial birds may result in a competitive disadvantage for the youngest nestlings compared to older siblings. We studied the effects of a size hierarchy on the growth rate of Eurasian kestrels Falco tinnunculus chicks in[...]
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J. Valkama, Auteur ; E. Korpimäki, Auteur ; J. Wiehn, Auteur ; T. Pakkanen, AuteurWe examined inter-clutch egg size variation of Eurasian kestrels Falco tinnunculus in western Finland over a period of 12 years, during which their main prey, Microtus voles. fluctuated in three-year population cycles. Females that bred twice in[...]
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H. Hakkarainen, Auteur ; I. Yli-Tuomi, Auteur ; E. Korpimäki, Auteur ; R. Ydenberg, AuteurWe tested whether nest visitation rate of parent Pied Flycatchers (Ficedula hypoleuca) is decreased by an experimentally increased predation risk. We simulated predation risk by placing a stuffed Pygmy Owl (Glaucidium passerinum) in the nest vic[...]
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T. Laaksonen, Auteur ; J. A. Fargallo, Auteur ; E. Korpimäki, Auteur ; S. Lyytinen, Auteur ; J. Valkama, Auteur ; V. Poyri, Auteur1. Offspring sex ratio may be an unpredictable component of life history that might select for behavioural plasticity in parental care. If the parents do not have such plasticity and the two sexes of offspring differ in size, individuals in a br[...]
