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Article
Al Vrezec, Auteur ; Pertti Saurola, Auteur ; Andris Avotins, Auteur ; Stiven Kocijančič, Auteur ; Seppo Sulkava, AuteurCapsule: Voles are the main prey of the Ural Owl Strix uralensis in Europe, with larger prey and higher prey diversity being positively associated with owl breeding performance.Aims: To assess the breeding diet and its influence on the breeding [...]
Article
Maja Derlink, Auteur ; Chris Wernham, Auteur ; Irena Bertoncelj, Auteur ; Andras Kovacs, Auteur ; Pertti Saurola, Auteur ; Guy Duke, Auteur ; Paola Movalli, Auteur ; Al Vrezec, AuteurCapsule: A questionnaire identified 1196 raptor monitoring species schemes within 236 monitoring programmes across 37 countries.Aims: To assess the level of monitoring of status/trends of raptors across Europe, to produce a web-based inventory o[...]
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Pertti Saurola, Auteur ; Charles Francis, AuteurCapsule: Monitoring of demographic parameters by volunteer ringers provides insight into the factors driving population changes in owls.Aims: To assess the value of national ringing, recapture and recovery data from volunteers to understand popu[...]
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Pertti Saurola, AuteurIn Finland, Comprehensive Surveys to monitor numbers and productivity of four endangered species of birds of prey were started in the early 1970s. In 1982, the Ringing Center launched the Raptor Grid, a nationwide monitoring program for all othe[...]
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Pertti Saurola, AuteurIn Finland, Comprehensive Surveys to monitor numbers and productivity of four endangered species of birds of prey were started in the early 1970s. In 1982, the Ringing Center launched the Raptor Grid, a nationwide monitoring program for all othe[...]
Article
Pertti Saurola, AuteurDans Ardea (97(4) 2009)In Finland, monitoring of 'common' birds of prey is based on two projects run by the Finnish Ringing Centre: the Raptor Grid (since 1982) and Raptor Questionnaire (since 1986). The Raptor Grid has produced sufficient data for analysing populatio[...]
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Aleksi Lehikoinen, Auteur ; Pertti Saurola, Auteur ; Patrik Byholm, Auteur ; Andreas Linden, Auteur ; Jari Valkama, AuteurCurrent climate change has been found to advance spring arrival and breeding dates of birds, but the effects on autumn migration and possible responses in the distribution of wintering individuals are poorly known. To thoroughly understand the c[...]
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Pertti Saurola, AuteurIn Finland, population monitoring for both diurnal and nocturnal raptors has been almost entirely based on fieldwork carried out by voluntary raptor ringers. Responsible organisations include the Finnish Museum of Natural History, with economic [...]
Article
Al Vrezec, Auteur ; Guy Duke, Auteur ; Andras Kovacs, Auteur ; Pertti Saurola, Auteur ; Chris Wernham, Auteur ; Ian Burfield, Auteur ; Paola Movalli, Auteur ; Irena Bertoncelj, AuteurDespite the key role of raptors (including birds of prey Falconiformes and owls Strigiformes) in ecosystems and their sensitivity to environmental change, a well coordinated, Europe-wide monitoring of raptors is lacking. EURAPMON, a Research Net[...]
Article
Roland Hausknecht, Auteur ; Susanne Jacobs, Auteur ; Jorg Mueller, Auteur ; Richard Zink, Auteur ; Hans Frey, Auteur ; Roar Solheim, Auteur ; Al Vrezec, Auteur ; Anton Krištín, Auteur ; Jozef Mihok, Auteur ; Ilze Kergalve, Auteur ; Pertti Saurola, Auteur ; Ralph Kuehn, AuteurThe distribution of the Ural Owl (Strix uralensis) in Europe shrank dramatically at the end of the nineteenth century, largely through direct persecution. No genetic information on this species is available that could provide a basis for ongoing[...]
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Klemens Puetz, Auteur ; Carsten Rahbek, Auteur ; Pertti Saurola, Auteur ; Kjeld T. Pedersen, Auteur ; Risto Juvaste, Auteur ; Andreas J. Helbig, AuteurThe migratory behaviour of two Lesser Black-backed Gull Larus fuscus subspecies, fuscus and intermedius, was studied using satellite telemetry. To this end, first-year birds were equipped with satellite transmitters and released either at their [...]
