Data underlying publication: Green turtles shape the seascape through grazing patch formation around habitat features: experimental evidence

This dataset contains the data collected from field experiments studying the impact of habitat structure on green turtle density, behavior and grazing impact. In this study, we established large-scale (242m2) and small-scale arrays (9m2) with artificial structures in a a seagrass meadow in The Bahamas. Over time, within the large-scale array, we measured turtle density, turtle grazing behavior and grazing patch development using drone imagery. Additionally we measured Thalassia testudinum seagrass morphology (LAI, cover, shoot density and aboveground biomass) comparing seagrass in the grazing patch within cages and outside cages. To confirm that turtles select structure as foraging site, even at a small-scale, we measured grazing patch development around the structures in the small-scale arrays. </p

Data underlying publication: Green turtles shape the seascape through grazing patch formation around habitat features: experimental evidence

This dataset contains the data collected from field experiments studying the impact of habitat structure on green turtle density, behavior and grazing impact. In this study, we established large-scale (242m2) and small-scale arrays (9m2) with artificial structures in a a seagrass meadow in The Bahamas. Over time, within the large-scale array, we measured turtle density, turtle grazing behavior and grazing patch development using drone imagery. Additionally we measured Thalassia testudinum seagrass morphology (LAI, cover, shoot density and aboveground biomass) comparing seagrass in the grazing patch within cages and outside cages. To confirm that turtles select structure as foraging site, even at a small-scale, we measured grazing patch development around the structures in the small-scale arrays. </p

Data underlying publication: Green turtles shape the seascape through grazing patch formation around habitat features: experimental evidence

This dataset contains the field data collected from field experiments studying the impact of habitat structure on turtle density, behavior and grazing impact</p

Spatial structure and genetic diversity of natural populations of the Caribbean pine,Pinus caribaeavar. bahamensis (Pinaceae), in the Bahaman archipelago

For the first time a comprehensive population genetics study of the endemic Caribbean pine, Pinus caribaea var. bahamensis, in the Bahamas and the Turks and Caicos Islands (TCI) is undertaken. Information on inbreeding levels, genetic diversity and spatial structure in the focus taxon are important tools for its future conservation and can help guide local forest management. Plastid (pDNA) and nuclear microsatellite (nDNA) loci were used to reveal past and contemporary patterns of genetic differentiation and levels of genetic diversity and to test the hypothesis of isolation by distance of populations in the Bahamas and TCI regions. Due to its non-recombinant nature, low mutation rates and uniparental inheritance, pDNA can give an insight into an earlier state of the populations than that revealed by nDNA. Data from pDNA showed only 12 haplotypes, with one of them present in c. 81% of individuals, low unbiased genetic diversity (uh  0.487) and significant variation between regions (FCT = 0.156, P < 0.01). Isolation by distance was only significant for nDNA (r2 = 0.56, P < 0.01). Only two of the populations had significant levels of inbreeding (FIS = 0.090, FIS = 0.113). High levels of gene flow and lack of isolation in the past were revealed by pDNA, whereas nDNA showed a more recent spatial isolation and genetic differentiation between the Bahamas and TCI populations. Conservation measures are discussed in view of the genetic diversity, inbreeding and spatial structure found in the taxon. © 2014 The Linnean Society of London, Botanical Journal of the Linnean Society, 2014, 174, 359–383