15
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Genetic structure of Bertholletia excelsa populations from the Amazon at different spatial scales

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references38

          • Record: found
          • Abstract: not found
          • Article: not found

          Speciation in amazonian forest birds.

          J Haffer (1969)
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            New insights from fine-scale spatial genetic structure analyses in plant populations.

            Many empirical studies have assessed fine-scale spatial genetic structure (SGS), i.e. the nonrandom spatial distribution of genotypes, within plant populations using genetic markers and spatial autocorrelation techniques. These studies mostly provided qualitative descriptions of SGS, rendering quantitative comparisons among studies difficult. The theory of isolation by distance can predict the pattern of SGS under limited gene dispersal, suggesting new approaches, based on the relationship between pairwise relatedness coefficients and the spatial distance between individuals, to quantify SGS and infer gene dispersal parameters. Here we review the theory underlying such methods and discuss issues about their application to plant populations, such as the choice of the relatedness statistics, the sampling scheme to adopt, the procedure to test SGS, and the interpretation of spatial autocorrelograms. We propose to quantify SGS by an 'Sp' statistic primarily dependent upon the rate of decrease of pairwise kinship coefficients between individuals with the logarithm of the distance in two dimensions. Under certain conditions, this statistic estimates the reciprocal of the neighbourhood size. Reanalysing data from, mostly, published studies, the Sp statistic was assessed for 47 plant species. It was found to be significantly related to the mating system (higher in selfing species) and to the life form (higher in herbs than trees), as well as to the population density (higher under low density). We discuss the necessity for comparing SGS with direct estimates of gene dispersal distances, and show how the approach presented can be extended to assess (i) the level of biparental inbreeding, and (ii) the kurtosis of the gene dispersal distribution.
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Spatial Genetic Structure of a Tropical Understory Shrub, Psychotria officinalis (Rubiaceae)

                Bookmark

                Author and article information

                Journal
                Conservation Genetics
                Conserv Genet
                Springer Nature America, Inc
                1566-0621
                1572-9737
                August 2015
                March 24 2015
                August 2015
                : 16
                : 4
                : 955-964
                Article
                10.1007/s10592-015-0714-4
                e8de83b5-c0fd-4232-b5be-2037280a15e4
                © 2015
                History

                Comments

                Comment on this article