News News

Productivity in a German Osprey population

The Osprey is an emblematic example of conservation. Currently, the species is progressively recovering in population size and range after dramatic reductions as a consequence of human persecution and the use of pesticides in the nineteenth and twentieth centuries. Here, the population trend and productivity were analysed in relation to the nesting substrate and the protection status of the nest location. The Osprey population steadily grew during the study period, accompanied by the increased use of artificial structures for nesting, possibly due to the scarcity of suitable natural nest sites in the region. Pairs nesting in trees showed higher variance in productivity than those nesting on artificial supports. Further, the productivity recorded in Ospreys nesting on natural sites decreased during the study period, regardless of the protection status of the nest location, whereas it did not vary for pairs nesting on artificial structures. The productivity of Ospreys was also related to the protection status of the nest location since pairs breeding inside protected areas, either in natural or on artificial nest sites, showed higher productivity than pairs nesting outside protected areas. These findings suggest that the protection of the nest location and the type of substrate used for nesting are relevant factors underlying the breeding performance in this Osprey population and are therefore key to its management. informacion[at]ebd.csic.es:  Canal et al (2017) Productivity is related to nest site protection and nesting substrate in a German Osprey population. J Ornithol DOI 10.1007/s10336-017-1498-8

 


https://link.springer.com/article/10.1007/s10336-017-1498-8
Average (0 Votes)

Latest News Latest News

Females mate with males with diminished pheomelanin-based coloration in the Eurasian nuthatch Sitta europaea

Sexual selection can drive the evolution of phenotypic traits because of female preferences for exaggerated trait expression in males. Sexual selection can also lead to the evolutionary loss of...

BMS Spain: Annual Report 2017

BMS Spain is a butterfly monitoring program created in 2014 with the aim of creating a tool for studying the butterfly populations and their habitats of in Spain. Through monitoring, among others,...