lunes, 28 de septiembre de 2015
Congress: XVIII Italian Ornithological Congress
The GEP at the XVIII Italian Ornithological Congress at Caramanico Terme (PE) with a contribution on "Elements of bird populaiton management".
You can see the programm and download the congress abstracts here.
Some pictures of the event here
martes, 22 de septiembre de 2015
New publication on the survival of Burrowing owls (Athene cunicularia) !
Rebolo-Ifrán, N., Carrete, M., Sanz-Aguilar, A., Rodríguez-Martínez,
S., Cabezas, S., Marchant, T., Bortolottu, G. and Tella, J. L. (2015).
Links between fear of humans, stress and survival support a non-random distribution of birds among urban and rural hábitats. Scientific Reports 5:13723. DOI: 10.1038/srep13723
Abstract:Urban endocrine ecology aims to understand how organisms cope with new
sources of stress and maintain allostatic load to thrive in an
increasingly urbanized world. Recent research efforts have yielded
controversial results based on short-term measures of stress, without
exploring its fitness effects. We measured feather corticosterone (CORTf,
reflecting the duration and amplitude of glucocorticoid secretion over
several weeks) and subsequent annual survival in urban and rural
burrowing owls. This species shows high individual consistency in fear
of humans (i.e., flight initiation distance, FID), allowing us to
hypothesize that individuals distribute among habitats according to
their tolerance to human disturbance. FIDs were shorter in urban than in
rural birds, but CORTf levels did not differ, nor were correlated to FIDs. Survival was twice as high in urban as in rural birds and links with CORTf
varied between habitats: while a quadratic relationship supports
stabilizing selection in urban birds, high predation rates may have
masked CORTf-survival relationship in rural ones. These
results evidence that urban life does not constitute an additional
source of stress for urban individuals, as shown by their near identical
CORTf values compared with rural conspecifics supporting the
non-random distribution of individuals among habitats according to
their behavioural phenotypes.
Photo: Natalia Rebolo |
lunes, 14 de septiembre de 2015
Ana Payo at NAUKAS BILBAO 2015: The big van theory
miércoles, 9 de septiembre de 2015
Nikola Matovic Master defense on streaming, now!
Nikola Matovic will defend his Master work on Storm petrel demographic parameters for the European Master Marine Environment and Resources today (09/09/2015). If you are interested you can follow his defense on streaming here
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