4 Works

Data from: A shady business: pine afforestation alters the primary controls on litter decomposition along a precipitation gradient in Patagonia, Argentina

Patricia I. Araujo & Amy T. Austin
Our understanding of the principal controls on litter decomposition is critical for our capacity to predict how global changes will impact terrestrial ecosystems. Although climate, litter quality and soil organisms clearly modulate carbon (C) and nutrient turnover, land-use change affecting plant species composition and structure can alter the relative importance of such controls. We took advantage of prior land-use changes of intentional planting of exotic forest species along a broad precipitation gradient [250–2200 mm mean...

Data from: Directional selection for flowering time leads to adaptive evolution in Raphanus raphanistrum (Wild radish)

Michael B. Ashworth, Michael J. Walsh, Kenneth C. Flower, Martin M. Vila-Aiub, Stephen B. Powles & Ken C. Flower
Herbicides have been the primary tool for controlling large populations of yield depleting weeds from agro-ecosystems, resulting in the evolution of widespread herbicide resistance. In response, nonherbicidal techniques have been developed which intercept weed seeds at harvest before they enter the soil seed bank. However, the efficiency of these techniques allows an intense selection for any trait that enables weeds to evade collection, with early-flowering ecotypes considered likely to result in early seed shedding. Using...

Data from: Giving taxonomic significance to morphological variability in the bivalve Ptychomya Agassiz

Pablo S. Milla Carmona, Dario G. Lazo & Ignacio M. Soto
The taxonomic significance of the morphological variability present in the genus Ptychomya Agassiz has remained obscure due to inadequacy of the traditional qualitative approach to account for complex patterns of variation. In this work, we focus on solving the distinction between intra- and interspecific variability in Ptychomya from Hauterivian marine beds of the Neuquén Basin (west-central Argentina), a longstanding and unresolved palaeontological issue, using the quantitative framework provided by geometric morphometrics and multivariate statistics. The...

Data from: Phylogenetic relationships of toads of the Rhinella granulosa group (Anura: Bufonidae): a molecular perspective with comments on hybridization and introgression

Martín O. Pereyra, Diego Baldo, Boris L. Blotto, Patricia P. Iglesias, Maria T. C. Thomé, Célio F. B. Haddad, César Barrio-Amorós, Roberto Ibáñez & Julián Faivovich
The Rhinella granulosa group consists of 13 species of toads distributed throughout open areas of South America and Panama. In this paper we perform a phylogenetic analysis considering all but one species of the group, employing five nuclear and four mitochondrial genes, for up to 7910 bp per specimen. Separate phylogenetic analyses under direct optimization (DO) of nuclear and mitochondrial sequences recovered the R. granulosa group as monophyletic and revealed topological incongruence that can be...

Registration Year

  • 2015
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Resource Types

  • Dataset
    4

Affiliations

  • University of Buenos Aires
    4
  • Bernardino Rivadavia Natural Sciences Museum
    1
  • Sao Paulo State University
    1
  • Curtin University
    1
  • Smithsonian Tropical Research Institute
    1
  • University of Sao Paulo
    1
  • National University of Misiones
    1
  • University of Western Australia
    1