Natal dispersal does not entail survival costs but is linked to breeding dispersal in a migratory shorebird, the southern dunlin Calidris alpina schinzii ...

• Main Authors: Pakanen, Veli-Matti, Koivula, Kari, Doligez, Blandine, Flodin, Lars-Åke, Pauliny, Angela, Rönkä, Nelli, Blomqvist, Donald
• Format: Dataset
• Language: English
• Published: Dryad 2022
• Subjects: breeding dispersal; costs and benefits of dispersal; site fidelity; Philopatry; within-individual consistency; emigration; FOS Biological sciences; Calidris alpina
• Online Access: https://dx.doi.org/10.5061/dryad.b2rbnzsj2; https://datadryad.org/stash/dataset/doi:10.5061/dryad.b2rbnzsj2

The costs and benefits of dispersal are often assessed by comparing fitness between dispersing and non-dispersing individuals. Importantly, individuals that disperse between their natal and first breeding site may subsequently be more likely to disperse between breeding sites compared to those that remained philopatric to their natal site. Such within-individual consistency in dispersal behaviour can bias local survival estimation, and thus the survival comparison between dispersing and non-dispersing individuals, if breeding dispersal leads to permanent emigration from the study area. We examined whether adult survival correlates with natal dispersal in a migratory shorebird, the southern dunlin (Calidris alpina schinzii), in two isolated patchy populations where permanent emigration is expected to be extremely rare. To assess whether local adult survival could be biased by non-random breeding dispersal, we analysed between-patch breeding dispersal probability and quantified within-individual consistency in ... : The data were collected from two breeding populations using standard field protocols and colour marking of individuals. These are outlined in the article. The dataset is in two parts. The capture-recapture data includes encounter histories of individuals and the dispersal data includes breeding dispersal information on individuals. The data are available are in format ready for analysis in MARK or R. One needs to clean the titles that have explanations for the variables. This data capture-recapture data collected during 1992-2020 from Finnish and Swedish populations of the southern dunlin that was used in analysing adult survival differences between dispersing and non-dispersing individuals. The grouping on individuals include population (Finland/Sweden), dispersal status (Dispersing/non-dispersing) and Sex (male/female). The distribution of indviduals to these classes is shown below. The data also include information about whether in individual was carrying a geolocator during a given year. Did the ...