Effects of pair migratory behaviour on breeding phenology and success in a partially migratory shorebird population ...
In migratory systems, variation in individual phenology can arise through differences in individual migratory behaviours, and this may be particularly apparent in partial migrant systems, where migrant and resident individuals are present within the same population. Links between breeding phenology...
| Main Authors: | , , , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2020
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.8sf7m0cjn https://datadryad.org/stash/dataset/doi:10.5061/dryad.8sf7m0cjn |
| Summary: | In migratory systems, variation in individual phenology can arise through differences in individual migratory behaviours, and this may be particularly apparent in partial migrant systems, where migrant and resident individuals are present within the same population. Links between breeding phenology and migratory behaviour or success are generally investigated at the individual level. However, for breeding phenology in particular, the migratory behaviours of each member of the pair may need to be considered simultaneously, as breeding phenology will likely be constrained by timing of the pair member that arrives last, and carry-over effects on breeding success may vary depending on whether pair members share the same migratory behaviour or not. We used tracking of marked individuals and monitoring of breeding success from a partially migrant population of Eurasian oystercatchers (Haematopus ostralegus) breeding in Iceland to test whether (a) breeding phenology varied with pair migratory behaviour; (b) ... : Individual tracking of Icelandic oystercatchersSince 2013, incubating oystercatchers in the south, west and north-west Iceland have been captured, measured and individually marked with coloured leg-rings. Adults were caught on the nest using a spring-trap and feather samples were collected for stable isotope analysis (see Méndez et al. 2020 for details). Through a network of volunteer observers reporting sightings of marked individuals throughout the wintering range, the migratory behaviour (resident or migrant) of 186 of the 537 marked individuals has been identified. For the remaining 351 individuals, migratory behaviour has been determined using a discriminant function analysis of stable isotope ratios (δ13C and δ15N), after calibration using the isotopic signatures of those individuals that were observed during winter within or outside Iceland (Méndez et al., 2020).Nest monitoring and breeding data collectionFrom mid-April each year (2015-2018), we surveyed study areas every 2-3 days to search for ... |
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