Détail de l'auteur
Documents disponibles écrits par cet auteur (8)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Grzegorz Neubauer, Auteur ; Arkadiusz Sikora, AuteurWe investigated the performance of hierarchical distance sampling (HDS) versus binomial N-mixture (binmix) models, both aiming at abundance (or, equivalently, density) estimation. We tested the accuracy of density estimates using simulated data [...]
Article
Arkadiusz Sikora, Auteur ; Grzegorz Neubauer, AuteurA fraction of White-throated Dippers Cinclus cinclus breeding in Scandinavia migrate south over the Baltic Sea during their short-distance migration to the winter quarters. The aim of our study was to investigate patterns of body mass changes be[...]
Article
Grzegorz Neubauer, Auteur ; Arkadiusz Sikora, AuteurWe investigated factors affecting the detection probability of the Collared Flycatcher Ficedula albicollis, a secretive forest passerine, whose range is confined to central and eastern Europe. With a robust design sampling protocol, 78 sites wer[...]
Article
\Lukasz \Lawicki, Auteur ; Tomasz Cofta, Auteur ; Szymon Beuch, Auteur ; Adam Dmoch, Auteur ; Arkadiusz Sikora, Auteur ; Sylwester Aftyka, Auteur ; Pawe\l Czechowski, Auteur ; Marcin Bocheński, Auteur ; Karol Sieczak, Auteur ; Szymon Mazgaj, Auteur
Article
\Lukasz \Lawicki, Auteur ; Tomasz Cofta, Auteur ; Szymon Beuch, Auteur ; Adam Dmoch, Auteur ; Arkadiusz Sikora, Auteur ; Sylwester Aftyka, Auteur ; Pawe\l Czechowski, Auteur ; Marcin Bocheński, Auteur ; Karol Sieczak, Auteur ; Szymon Mazgaj, AuteurFIGURE 1 Distribution of hybrids Grey-headed x European Green Woodpecker Picus canus x viridis in Poland compared with breeding ranges of both parent species. Yellow dot: record of hybrid; plain green: range of European Green Woodpecker; cheque[...]
Article
Arkadiusz Sikora, Auteur ; Grzegorz Neubauer, AuteurBreeding ranges of Scandinavian and central European Subspecies of the White-throated Dipper (Cinclus cinclus cinclus and C c. aquaticus) arc geographically separated by uninhabited lowlands. Between 1990 and 2006,25 confirmed and 4 probable bre[...]
Article
Arkadiusz Sikora, Auteur ; Anna Dubiec, AuteurJack Snipe Lymnocryptes minimus is a small wader showing sexual monomorphism in plumage and some dimorphism in size. To study whether parameters of body size may be used to reliably sex individuals of this species, a discriminant function analys[...]
