Data from: Rapid evolution accelerates plant population spread in fragmented experimental landscapes Williams, Jennifer L.; Kendall, Bruce E.; Levine, Jonathan M.
Predicting the speed of biological invasions and native species migrations requires an understanding of the ecological and evolutionary dynamics of spreading populations. Theory predicts that evolution can accelerate species’ spread velocity, but how landscape patchiness—an important control over traits under selection—influences this process is unknown. We manipulated the response to selection in populations of a model plant species spreading through replicated experimental landscapes of varying patchiness. After six generations of change, evolving populations spread 11% farther than nonevolving populations in continuously favorable landscapes and 200% farther in the most fragmented landscapes. The greater effect of evolution on spread in patchier landscapes was consistent with the evolution of dispersal and competitive ability. Accounting for evolutionary change may be critical when predicting the velocity of range expansions.; Usage notes
Furthest seed dispersed in each generation for each replicateDistance of the furthest seed for each replicate in each generation, as well as the number of seedlings in the furthest pot. See metadata in ReadMe file (and description of Methods in the paper).2016_06_01_ArabiEvoMaxDistance.csvTraits of each genotypeMean of each of four traits for each genotype (recombinant inbred line) in the experiment: height (when growing alone), dispersal (average distance of furthest dispersed seed from a solitary individual), competitive ability (dominance in non-spreading context), and seed mass. Data to estimate height, dispersal and seed mass were from separate experiment than main experiment (see Methods). Note that ranks rather than raw data were used for analyses of all traits. See ReadMe associated with 'Furthest seed' datafile for metadata.fourtraits.csvGenotypes in Generation 6Genotype results after 6 generations of spread. 10 individuals were sampled from the leading edge (front) and 10 from the first pot in the array (back). See ReadMe associated with 'Furthest seed' datafile for metadata.Gen6_Genotypes.csvLocation and seedling density for one replicate (Fig. 1B)Number of seedlings in each pot in each generation for one replicate array in the experiment (continuous landscape, evolving treatment), as in Figure 1B. Seedlings were counted in 1 cm wide bins at the leading edge, and counted for the entire pot behind the leading edge. See ReadMe associated with 'Furthest seed' datafile for metadata.seedlings_ID49.csv