10.5061/DRYAD.1TH60
Grendelmeier, Alexander
Arlettaz, Raphaël
University of Bern
Gerber, Michael
Schweizer Vogelschutz SVS/BirdLife Schweiz, Zürich, Switzerland
Pasinelli, Gilberto
Swiss Ornithological Institute
Grendelmeier, Alex
Swiss Ornithological Institute
University of Bern
Data from: Reproductive performance of a declining forest passerine in
relation to environmental and social factors: implications for species
conservation
Dryad
dataset
2015
Passerines
Phylloscopus sibilatrix
reproductive performance
biotic and abiotic factors
Exposure Time Method
2015-07-29T17:33:08Z
2015-07-29T17:33:08Z
en
https://doi.org/10.1371/journal.pone.0130954
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Identifying factors influencing a species’ ecological niche and demography
is a prerequisite for species conservation. However, our understanding of
the interplay between demographic rates and biotic/abiotic factors is
still poor for most species of conservation concern. We evaluated
relevance of eight hypotheses relating to timing of breeding, temporal
nest exposure, nest concealment, topography, tree structure, predation
risk and disturbance, density dependence and weather for explaining
variation in reproductive performance of the declining wood warbler
Phylloscopus sibilatrix in northern Switzerland. Reproductive performance
was monitored with cameras at 136 nests from 2010 to 2012 and was
associated to temporal exposure, timing of breeding and concealment of
nests. Daily nest survival was positively related to the number of grass
and sedge tussocks, nest concealment and nest age. Clutch size and number
of fledglings decreased, the later in the season a nest was initiated.
Nest survival over an average nesting period of 32 days was 44.5 ± 0.07 %
(mean ± SE), daily nest survival rate (dnsr) was 0.975 ± 0.002. As for
many ground-breeding birds, nest predation was the principal cause of nest
failure, accounting for 79 % of all nest losses. Conservation measures
should aim at increasing the area of relatively homogenous forest stands
featuring suitable habitats characterized by abundant and accessible grass
and sedge tussocks. Such conditions can be found in forest stands of
middle age (i.e. pole wood) with little to no shrub layer.
Wood warbler data 2010-2012 daily nest survival ratedata per nest per
dayww10-12-daybyday-withNA-withabandoned.xlsxwood warbler data 2010-2012
clutch sizecz10-12_with_dist_soc_fe_weather.xlsxwood warbler data
2010-2012 fledglingsfl10-12_with_dist_soc_fe_weather.xlsx
Switzerland