A checklist of the bryophytes of Andorra

<p>A checklist of 137 liverwort and 445 moss species is established for Andorra based on a review of the literature and a long-term floristic survey. Five moss species, <i>Barbula amplexifolia</i>, <i>Ditrichum zonatum</i>, <i>Grimmia donniana</i>, <i>Pohlia bulbifera</i>, and <i>P. lutescens</i>, are new to the Iberian Peninsula. Another 7 liverwort and 156 moss species are new to Andorra. For each species, the distribution at the scale of 1 km² and altitudinal range are documented, resulting in an improved assessment of the frequency and distribution of 101 moss species previously reported from a single record. <i>Haplomitrium hookeri</i> and <i>Scapania verrucosa</i>, which are the two Regionally Extinct species of the Spanish Red List of liverworts, occur in Andorra, which hosts between 23 and 37% of the species listed as Critically Rare, Endangered, or Vulnerable in the Spanish Red List of bryophytes. Therefore, it appears that Andorra is a key area for the conservation of the high-altitude flora of the Iberian Peninsula.</p

Moran’s I autocorrelation coefficient of the k-means clustering of the 100×100 km MGRS pixels across Europe based on their potential bryophyte species composition for different values of k and intensities of subsampling (no subsampling and subsampling at 20, 40 and 60%) of the most intensively prospected areas.

<p>Moran’s I autocorrelation coefficient of the k-means clustering of the 100×100 km MGRS pixels across Europe based on their potential bryophyte species composition for different values of k and intensities of subsampling (no subsampling and subsampling at 20, 40 and 60%) of the most intensively prospected areas.</p

Percentage of MGRS pixels assigned to one region based upon the biogeographic regionalization of European bryophytes (k = 6, 60% subsampling) and to the same region defined in the Biogeographic regions of Europe.

<p>(<a href="http://www.eea.europa.eu/data-and-maps/data/biogeographical-regions-europe-2008" target="_blank">http://www.eea.europa.eu/data-and-maps/data/biogeographical-regions-europe-2008</a>, Bohn <i>et al</i>. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055648#pone.0055648-Bohn1" target="_blank">[41]</a>) and kappa statistics.</p

Number of bryophyte species occurrence per MGRS pixel in Europe.

<p>when all the data collected (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055648#pone.0055648.s001" target="_blank">Table S1</a>) are considered (no subsample) and when the most intensively surveyed areas (UK and Germany) are subsampled at 20%, 40% and 60%, respectively.</p

Biogeographic regionalization of the European bryophyte flora inferred from a k-means analysis with k = 3−10.

<p>From a datamatrix of potential distribution for each species as inferred from macroclimatic niche modeling. Because of the substantial heterogeneity in floristic sampling, the analyses were performed from models employing the whole range of available data points for each species (no subsampling) and after the random subsampling of 20, 40 and 60% of the data from intensively surveyed areas (UK and Germany) (see Material and Methods).</p

Spectrum of the biogeographical affinities.

<p>of the species identified as indicators for the Atlantic, Alpine, Boreal, Continental, and Mediterraneo-Macaronesian regions resolved from the analysis of bryophyte species distributions in Europe.</p

Biogeographical regions of Europe.

<p>(<a href="http://www.eea.europa.eu/data-and-maps/data/biogeographical-regions-europe-2008" target="_blank">http://www.eea.europa.eu/data-and-maps/data/biogeographical-regions-europe-2008</a>) resulting from the ‘Map of Natural Vegetation of the member countries of the European Community and of the Council of Europe’ (Bohn <i>et al.</i>, 2000-2004) rescaled at the resolution level of the MGRS pixels.</p

Species indicator value for each of the biogeographic regions defined from the k-means analysis of patterns of potential distribution at the scale of the European bryophyte flora with K = 6 and after the subsampling of the British and German floras at 60% (see Material and Methods for details).

<p>Only the 20 species with the highest indicator values are given for each region.</p

Dataset1_USYB-2014-217_R2

DATASET S1. Voucher information (a), including the code sample, geographic coordinates and the geographic origin, and GenBank accession numbers (b) and for each specimen analyzed. A total of 1925 cpDNA and 465 nrDNA sequences were produced for an overall of 649 specimens analyzed. A dash in a given locus column indicates that the sequencing failed; an empty cell indicates that that particular locus was not used for a given specie

SupplementaryInformation_USYB-2014-217_R2

Supplementary material includes TABLES S1 to S6 and FIGURES S1 to S