Data from: Ecological opportunity shapes a large Arctic charr species radiation ...

• Main Authors: Doenz, Carmela, Kraehenbuehl, Andrin, Walker, Jonas, Seehausen, Ole, Brodersen, Jakob
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Arctic charr; ecological opportunity; Salvelinus spp.; Arctic; Greenland; greenlandic
• Online Access: https://dx.doi.org/10.5061/dryad.q2r87q9; https://datadryad.org/stash/dataset/doi:10.5061/dryad.q2r87q9

Ecological opportunity is considered a crucial factor for adaptive radiation. Here, we combine genetic, morphological and ecological data to assess species and ecomorphological diversity of Artic charr in six lakes of a catchment in southernmost Greenland, harbouring only charr and stickleback. Because the diversity of habitats and resources increases with lake size, we predict a positive association between lake size and the extent of ecomorphological diversity. The largest lake of the catchment harbours the largest Arctic charr assemblage known today. It consists of six genetically differentiated species belonging to five ecomorphs (anadromous, littoral benthic, profundal dwarf, planktivorous, piscivorous), of which the latter comprises two ecomorphologically extremely similar species. Lakes of intermediate size contain two ecomorphologically and genetically distinct species. Small lakes harbour one genetically homogenous, yet sometimes ecomorphologically variable population. Supporting our prediction, ... : Individual genetic, morphological and ecological data of Greenlandic charrIndividual data on charr diversity in Greelandic lakes. Net_trap_rod indicates the type of fishing: benthic nets are indicated with B, pelagic nets with P, stickleback traps with ST, scoop nets with SN, flyfishing with F, catching a fish with the hand with H. Depth_site indicates the depth of the lake at the site where the fish was caught, Catching_Depth the depth at which the fish was caught. Geno_max indicates the genetic assignment obtained in the hierarchical structure analysis for the full dataset. Cluster1-7 are individual genetic assignments to each of the 7 clusters from the structure analysis. Alleles of the 9 microsatellite markers are coded as retention time, missing data is indicated with -9. d13C, d13C_lipidcorr, d15N, CNratio are stable isotopic data. Linear morphometric distances (TL-BDA) were measured on the preserved fish using a digital caliper, are given in mm, and are described in Figure S1 in the supplementary ...