DOI: 10.5061/dryad.6d8g5
title: Data from: Genetic relatedness does not retain spatial pattern across multiple spatial scales: dispersal and colonization in the coral, Pocillopora damicornis

description: Patterns of isolation-by-distance are uncommon in coral populations. Here,
 we depart from historical trends of large-scale, geographic genetic
 analyses by scaling down to a single patch reef in Kāne‘ohe Bay, Hawai‘i,
 and map and genotype all colonies of the coral, Pocillopora damicornis.
 Six polymorphic microsatellite loci were used to assess population genetic
 and clonal structure and to calculate individual colony pairwise
 relatedness values. Our results point to an inbred, highly clonal reef
 (between 53 and 116 clonal lineages out of 2352 genotyped colonies) with a
 very skewed genet frequency distribution (over 70% of the reef was
 composed of just seven genotypes). Spatial autocorrelation analyses
 revealed that corals found close together on the reef were more
 genetically related than corals further apart. Spatial genetic structure
 disappears, however, as spatial scale increases and then becomes negative
 at the largest distances. Stratified, random sampling of three
 neighbouring reefs confirms that reefs are demographically open and
 inter-reef genetic structuring was not detected. Attributing process to
 pattern in corals is complicated by their mixed reproductive strategies.
 Separate autocorrelation analyses, however, show that the spatial
 distribution of both clones and non-clones contribute to spatial genetic
 structure. Overall, we demonstrate genetic structure on an intra-reef
 scale and genetic panmixia on an inter-reef scale indicating that, for P.
 damicornis, small- and large-scale dispersal processes are likely not the
 same. By starting from an inter-individual, intra-reef level before
 scaling up to an inter-reef level, this study demonstrates that
 isolation-by-distance patterns for the coral P. damicornis are limited to
 small scales and highlights the importance of investigating genetic
 patterns and ecological processes at multiple scales.
description: SPAGeDi_Reef19_completegenospaceInput file for the program, Spatial Pattern Analysis of Genetic Diversity (SPAGeDi; Hardy and Vekemans 2002) giving spatial and multi-locus genetic data for Reef 19, the focal reef of our study where Pocillopora damicornis was near-exhaustively surveyed. From left to right, columns represent Sample ID Number, x coordinate, y coordinate, and genotypes at each of 6 microsatellite loci.SPAGeDi_Reef12genospaceInput file for the program, Spatial Pattern Analysis of Genetic Diversity (SPAGeDi; Hardy and Vekemans 2002) giving spatial and multi-locus genetic data for Pocilopora damicornis samples taken from Reef 12, one of the "neighboring reefs" in our study. From left to right, columns represent Sample ID Number, x coordinate, y coordinate, and genotypes at each of 6 microsatellite loci.SPAGeDi_Reef16genospaceInput file for the program, Spatial Pattern Analysis of Genetic Diversity (SPAGeDi; Hardy and Vekemans 2002) giving spatial and multi-locus genetic data for Pocilopora damicornis samples taken from Reef 16, one of the "neighboring reefs" in our study. From left to right, columns represent Sample ID Number, x coordinate, y coordinate, and genotypes at each of 6 microsatellite loci.SPAGeDi_Reef20genospaceInput file for the program, Spatial Pattern Analysis of Genetic Diversity (SPAGeDi; Hardy and Vekemans 2002) giving spatial and multi-locus genetic data for Pocilopora damicornis samples taken from Reef 20, one of the "neighboring reefs" in our study. From left to right, columns represent Sample ID Number, x coordinate, y coordinate, and genotypes at each of 6 microsatellite loci.