Data from: Environment not dispersal limitation drives clonal composition of arctic Daphnia in a recently deglaciated area ...

• Main Authors: Haileselasie, Tsegazeabe Hadush, Mergeay, Joachim, Weider, Lawrence J., Sommaruga, Ruben, Davidson, Thomas A., Meerhoff, Mariana, Arndt, Hartmut, Jürgens, Klaus, Jeppesen, Erik, De Meester, Luc
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: isolation-by-dispersal limitation; Isolation-by-colonization; Daphnia pulex sensu lato s.l.; founder effects; Arctic; Greenland; Jakobshavn Isbræ; Ice Sheet; Jakobshavn; Jakobshavn isbræ
• Online Access: https://dx.doi.org/10.5061/dryad.m874p; https://datadryad.org/stash/dataset/doi:10.5061/dryad.m874p

One of the most prominent manifestations of the ongoing climate warming is the retreat of glaciers and ice sheets around the world. Retreating glaciers result in the formation of new ponds and lakes, which are available for colonization. The gradual appearance of these new habitat patches allows us to determine to what extent the composition of asexual Daphnia (water flea) populations is affected by environmental drivers versus dispersal limitation. Here we used a landscape genetics approach to assess the processes structuring the clonal composition of species in the D. pulex species complex that have colonized periglacial habitats created by ice-sheet retreat in western Greenland. We analyzed 61 populations from a young (<50 y) and an old cluster (>150 y) of lakes and ponds. We identified 42 asexual clones that varied widely in spatial distribution. Beta diversity was higher among older than among younger systems. Lineage sorting by the environment explained 14% of the variation in clonal composition ... : Sampling locations and environmental data from Jakobshavn Isbræ region of western GreenlandGeographic coordinates (UTM readings), pH, water temperature, altitude, depth, area and distance to ice sheet collected in the field and nutrients (Total nitrogen, Total phosphorus and chlorophyll-a) determined in the laboratory from water samples collected during field sampling.Geographic location and Environmental data.txtClones and their abuandance in the habitat detectedKX024528-KX024565DNA Sequence data used for species identification were submitted to GenBank® and deposited for Haileselasie et al. (2016) Colonization history and clonal richness of asexual Daphnia in periglacial habitats of contrasting age in West Greenland in Journal of Animal Ecology (doi:10.1111/1365-2656.12513). They are available from the NCBI PopSet database under accession number 1015802155, or in GenBank® under individual accession numbers KX024528-KX024565.Dryad® Digital RepositoryThis files includes the R packages we used in our ...