Extracted from the Mendeley GBIF Public Library.
Cornwell, W., Westoby, M., Falster, D., FitzJohn, R., O'Meara, B., Pennell, M., McGlinn, D., Eastman, J., Moles, A., Reich, P., Tank, D., Wright, I., Aarssen, L., Beaulieu, J., Kooyman, R., Leishman, M., Miller, E., Niinemets, Ã., Oleksyn, J., Ordonez, A., Royer, D., Smith, S., Stevens, P., Warman, L., Wilf, P., Zanne, A., 2014.
Journal of Ecology 102(2) 345-356.
1. Plant traits vary widely across species and underpin differences in ecological strategy. Despite centuries of interest, the contributions of different evolutionary lineages to modern-day functional diversity remain poorly quantified. 2. Expanding data bases of plant traits plus rapidly improving phylogenies enable for the first time a data-driven global picture of plant functional diversity across the major clades of higher plants. We mapped five key traits relevant to metabolism, resource competition and reproductive strategy onto a phylogeny across 48324 vascular plant species world-wide, along with climate and biogeo- graphic data. Using a novel metric, we test whether major plant lineages are functionally distinctive. We then highlight the traitâ€“lineage combinations that are most functionally distinctive within the present-day spread of ecological strategies. 3. For some traitâ€“clade combinations, knowing the clade of a species conveys little information to neo- and palaeo-ecologists. In other traitâ€“clade combinations, the clade identity can be highly reveal- ing, especially informative cladeâ€“trait combinations include Proteaceae, which is highly distinctive, representing the global slow extreme of the leaf economic spectrum. Magnoliidae and Rosidae con- tribute large leaf sizes and seed masses and have distinctively warm, wet climatic distributions. 4. Synthesis. This analysis provides a shortlist of the most distinctive traitâ€“lineage combinations along with their geographic and climatic context: a global view of extant functional diversity across the tips of the vascular plant phylogeny.
Keywords: Kolmogorovâ€“Smirnov Importance index, determinants of plant community diversity and stru, functional traits, geographic and climatic distributions, leaf nitrogen, leaf size, maximum adult height, phylogenetic tree, seed mass, specific leaf area
Obermayer, W., Randlane, T., 2012.
The Bryologist 115(1) 51-60.
The occurrence of Platismatia erosa in Tibet and adjacent regions is reported. The shape of (hitherto rarely found) apothecia and pycnospores (the latter observed for the first time) are illustrated and compared with those of European material of P. glauca. TLC analyses of P. erosa samples revealed two substances, hitherto unknown in Platismatia, namely pannaric acid and jackinic acid, the latter also found in fruiting material of Platismatia glauca from Europe. Two chemotypes of P. erosa are recognized: chemotype I with caperatic acid as main fatty acid, and chemotype II (found only once) with jackinic acid as main aliphatic substance.
Keywords: Lichen, Platismatia glauca, chemotypes, conidia, taxonomy
Gugger, P., GonzÃ¡lez-RodrÃguez, A., RodrÃguez-Correa, H., Sugita, S., Cavender-Bares, J., 2010.
Southward Pleistocene migration of Douglas-fir into Mexico: phylogeography, ecological niche modeling, and conservation of â€˜rear edgeâ€™ populations
New Phytologist online.
Summary * â€¢Poleward Pleistocene plant migration has been an important process structuring modern temperate and boreal plant communities, but the contribution of equatorward migration remains poorly understood. Paleobotanical evidence suggests Miocene or Pleistocene origin for temperate â€˜sky islandâ€™ plant taxa in Mexico. These â€˜rear edgeâ€™ populations situated in a biodiversity hotspot may be an important reserve of genetic diversity in changing climates. * â€¢We used mtDNA sequences, cpDNA sequences and chloroplast microsatellites to test hypotheses of Miocene vs Pleistocene colonization of temperate Douglas-fir in Mexico, explore geographic patterns of molecular variation in relation to Pleistocene climate history using ecological niche models, and assess the taxonomic and conservation implications. * â€¢We found strong evidence for Pleistocene divergence of Douglas-fir in Mexico (958 thousand yr before present (ka) with the 90% highest posterior density interval ranging from 1.6 million yr before present (Ma) to 491 ka), consistent with the southward Pleistocene migration hypothesis. Genetic diversity was high and strongly partitioned among populations. Spatial patterns of molecular variation and ecological niche models suggest a complex late Pleistocene history involving periods of isolation and expansion along mountain corridors. * â€¢These results highlight the importance of southward Pleistocene migration in establishing modern high-diversity plant communities and provide critical insights into proposals to conserve the unique biodiversity of Mexican Douglas-fir and associated taxa.
Keywords: Mexico, Pseudotsuga menziesii, cpDNA, cpSSR, ecological niche modeling, mtDNA, phylogeography, rear edge