The relationship between environmental stress and inbreeding depression in populations of animals and plants: a data resource for meta-analysis (Version 1.0)

Chan, Yuan-Fu, Hodgson, jenny and Whitlock, Raj (2026) The relationship between environmental stress and inbreeding depression in populations of animals and plants: a data resource for meta-analysis (Version 1.0). [Data Collection]

Description

This dataset comprises data and code needed to support meta-analyses on the relationship between inbreeding depression and environmental variation and stress, in populations of animals and plants. These materials are sufficient to replicate all analyses and figures in a companion manuscript (Chan, Hodgson & Whitlock, 2026; Inbreeding depression is greater in benign than in stressful environments, under review). The dataset has two subfolders: the “Data” subfolder contains data files, and the “Code” subfolder contains R-scripts for analysis and plotting. Each subfolder contains a readme.txt file fully describing the directory contents. Instructions for working with code and data are found in ./Code/readme.txt. The data The first data file comprises a tab-delimited text file (Chan_Ibd_Env_non_redundant_06_2026.tsv) which records inbreeding depression effect sizes, their sampling variance, samples sizes, standard error and a range of contextual information, extracted from 116 published research articles. The contextual information defines data structure (effect sizes nested within articles), and describes traits in which inbreeding costs were observed, organism taxonomy, observation environment, breeding or mating design, including inbreeding coefficients of observed progeny individuals. The second data file is also a tab-delimited text file (Chan_Datasource_Bibliography_06_2026.tsv) and contains bibliographical information for all articles that contributed data to Chan_Ibd_Env_non_redundant_06_2026.tsv (including author information, article title, publication/ journal title, volume, pages). The two data files are linked by a common field of article identifiers (Article_ID). Accompanying the two data files are two comma-delimited metadata files (Chan_Ibd_Env_non_redundant_metadata_06_26.csv and Chan_Datasource_Bibliography_06_2026_metadata.csv). These files give specific detail on the definition of all fields present in the two data files. Finally, a text file (readme.txt) describes the directory contents, recapitulating some of the information given above. The code The Code folder contains a collection of R-scripts (plain text files, with .R extensions) that can be run in the R statistical software. First, aanalysis readyprovided to transform the main data file (Chan_Ibd_Env_non_redundant_06_2026.tsv) into a format that is analysis ready. Eight R-scripts are provided to analyse data and plot figures that were included in our manuscript and its supplementary information. The R-script Master.R allows each of these (in total) 9 scripts to be conveniently sourced and run from the command line, generating plots without copy/pasting the underlying code. This file also specifies packages to be installed before running any code. Beyond this, there are two R-scripts to run a numerical simulation that we included in our manuscript (NumericSimulation_EnE.R and NumericSimulation_InE.R) and a convenience script for plotting error bars around points in graphs (Bar_plot_error_bars.R). Finally, a readme.txt file summarises the contents of the Code directory and gives additional specific detail for running code and computing resource requirements for doing so. The articles contributing data to our dataset are: Bibliography 1. S. Andersson, Does inbreeding promote evolutionary reduction of flower size? Experimental evidence from Crepis tectorum (Asteraceae). American Journal of Botany 99, 1388-1398 (2012). 2. J. R. Auld, R. A. Relyea, Life-history plasticity and inbreeding depression under mate limitation and predation risk: cumulative lifetime fitness dissected with a life table response experiment. Evolutionary Ecology 24, 1171-1185 (2010). 3. 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AoB Plants 6 (2014). 39. J. S. Heywood, Biparental inbreeding depression in the self-incompatible annual plant Gaillardia-pulchella (Asteraceae). American Journal of Botany 80, 545-550 (1993). 40. R. A. Hufbauer, A. Rutschmann, B. Serrate, H. V. de Conchard, B. Facon, Role of propagule pressure in colonization success: disentangling the relative importance of demographic, genetic and habitat effects. Journal of Evolutionary Biology 26, 1691-1699 (2013). 41. H. M. Hull-Sanders, M. D. Eubanks, Plant defense theory provides insight into interactions involving inbred plants and insect herbivores. Ecology 86, 897-904 (2005). 42. C. T. Ivey, D. E. Carr, Effects of herbivory and inbreeding on the pollinators and mating system of Mimulus guttatus (Phrymaceae). American Journal of Botany 92, 1641-1649 (2005). 43. C. T. Ivey, D. E. Carr, M. D. Eubanks, Effects of inbreeding in Mimulus guttatus on tolerance to herbivory in natural environments. Ecology 85, 567-574 (2004). 44. T. Janicke, N. 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Keywords: Conservation genetics, Environmental stress, Fitness cost, Inbreeding depression, Meta-analysis
Date Deposited: 07 Jul 2026 09:01
Last Modified: 07 Jul 2026 09:09
DOI: 10.17638/datacat.liverpool.ac.uk/3095
URI: https://datacat.liverpool.ac.uk/id/eprint/3095

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