| distribution and uptake of 137cs in relation to alkali metals in a perhumid montane forest ecosystem. | we determined the content of radiocesium ((137)cs) and alkali metals in soils, plants (2 ferns, a shrub and moss) and rainwater collected in an undisturbed forest ecosystem. the (137)cs activity and the isotopic ratio of (137)cs/cs in the samples were used to interpret the distribution and uptake of (137)cs and the alkali metals in plants. as a whole, the (137)cs in plants was assimilated together with k but was not dependent on cs. different adaptations of fern species collected in ecological n ... | 2008 | 18417349 |
| phylogeographic study reveals the origin and evolutionary history of a rhododendron species complex in taiwan. | this study infers a single origin and a once-widespread distribution of the rhododendron pseudochrysanthum species complex in taiwan based on chloroplast dna (cpdna) variation. in total, 124 individuals from five endemic rhododendron species were used for amplifications of two chloroplast intergenic spacers: trnl-trnf and atpb-rbcl. the haplotype and nucleotide diversities were much lower for the r. pseudochrysanthum complex, comprised of the species r. pseudochrysanthum, r. morii, rhododendron ... | 2007 | 17070712 |