Metapopulation-level analyses reveal positive fitness-consequences of immigration in a small bird

Dispersal links eco-evolutionary dynamics of subpopulations in fragmented landscapes and may play a crucial role in the viability of populations by increasing individual fitness and subpopulation growth rates. However, knowledge of the individual fitness of immigrants and residents and their offspring at the local and metapopulation levels is often lacking due to the difficulty of quantifying fitness in geographically structured wild populations, which requires extensive field efforts. A comprehensive dataset that includes more than 15 years of individual capture-mark-recapture information and a high-resolution SNP-based pedigree from an insular wild house sparrow (Passer domesticus) metapopulation, was used to examine the fitness consequences of successful immigration for parent and offspring generations and assess the relative contributions of immigrants and residents to a local pool of recruits versus individuals that recruited in other populations within the metapopulation. We showe..., , , # Metapopulation-level analyses reveal positive fitness consequences of immigration in a small bird

[https://doi.org/10.5061/dryad.qfttdz0sx](https://doi.org/10.5061/dryad.qfttdz0sx)

## Description of the data and file structure

Metapopulation-level analyses reveal positive fitness-consequences of immigration in a small bird

Dilan Saatoglu, Alina Katariina Niskanen, Hannah Froy, Peter Sjolte Ranke, Debora Goedert, Jane Reid, Thor Harald Ringsby, Bernt-Erik Sæther, Yimen Gerardo Araya-Ajoy and Henrik Jensen

Dilan Saatoglu

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### Files and variables

#### The following data files are included:

* **LRS.txt:** Data used in the lifetime reproductive success models. It includes ID (ID), natal island and adult island code (natal.island and adult.island respectively; further explanation provided below), dispersal status (disc; 1 = dispersers; 0 = residents), hatch year (year), sex (sex; f = female; m = male), lifetime reproductive s...,