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Documents disponibles écrits par cet auteur (9)
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Article
Roberto Muriel, Auteur ; Eva Casado, Auteur ; Daniel Schmidt, Auteur ; Cecilia P. Calabuig, Auteur ; Miguel Ferrer, AuteurCapsule Discriminant functions based on morphometric variables provide a reliable method for sex identification of free-living and hacked young Ospreys. Aims To describe an easy, accurate and low-cost method for sex determination of fully grown [...]
Article
Roberto Muriel, Auteur ; Eva Casado, Auteur ; Daniel Schmidt, Auteur ; Cecilia P. Calabuig, Auteur ; Miguel Ferrer, AuteurCapsule Discriminant functions based on morphometric variables provide a reliable method for sex identification of free-living and hacked young Ospreys. Aims To describe an easy, accurate and low-cost method for sex determination of fully grown [...]
Article
Mei-Ling Bai, Auteur ; Daniel Schmidt, AuteurDifferential migration reflects various constraints and selective forces on different individuals in a population, and has been explained by several hypotheses. Most previous studies about differential migration focused on only one aspect (e.g. [...]
Article
Distribution pattern of an expanding Osprey (Pandion haliaetus) population in a changing environment
Mei-Ling Bai, Auteur ; Daniel Schmidt, Auteur ; Eckhard Gottschalk, Auteur ; Michael Muehlenberg, AuteurWe studied the nest site selection and distribution pattern at landscape level of the German Osprey population, and demonstrated how to test the predictions of the ideal free distribution theory and its derivatives on such an expanding populatio[...]
Article
Roberto Muriel, Auteur ; Daniel Schmidt, Auteur ; Cecilia P. Calabuig, Auteur ; Juan Patino-Martinez, Auteur ; Miguel Ferrer, AuteurWe assessed the normal values for 15 blood plasma biochemistry parameters and three indices of body condition (IBCs) in free-living Osprey (Pandion haliaetus) nestlings in Brandenburg (Germany). Values were compared with those of other raptors, [...]
Article
Daniel Schmidt, Auteur ; Dietrich Roepke, AuteurBetween 25 September 1928 and 14 July 2000, 140 long distance recoveries (>100 km, first recoveries of non-breeders) of Ospreys ringed as nestlings in Germany were reported to the three German Bird Ringing Centres Helgoland, Hiddensee and Radolf[...]
Article
Daniel Schmidt, Auteur ; Rolf Wahl, AuteurTo study the breeding dispersal, site and mate fidelity of Ospreys, 39 breeding adults (24 females, 15 males) were trapped and colour-ringed at
Article
Daniel Schmidt, AuteurThe nesting population of the Osprey in Germany was investigated in the years 1988-1998 by an inquiry to the co-ordinators for the monitoring of birds of prey in the federal states of Germany. Due to minor gaps in the provided data sets, populat[...]
Article
Joerg Mueller, Auteur ; Lothar Schmid, Auteur ; Daniel Schmidt, AuteurAfter their extinction in the first half of the 20th century, mainly by hunting, Ospreys returned to Bavaria as a breeding species in 1992 when one pair nested. Protection of the birds by foresters and provision of artificial nests helped the po[...]
