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  • 1
    Online Resource
    Online Resource
    München : Verlag Franz Vahlen
    Keywords: Beschaffung ; Produktionswirtschaft ; Logistik ; Unternehmen ; Aufgabensammlung ; Beschaffung ; Produktionswirtschaft ; Logistik ; Unternehmen
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (XII, 325 Seiten) , Illustrationen, Diagramme
    Edition: 5., vollständig überarbeitete und erweiterte Auflage
    ISBN: 9783800647033
    Series Statement: Vahlens Übungsbücher der Wirtschafts- und Sozialwissenschaften
    Uniform Title: Übungsbuch zu Produktion und Logistik
    DDC: 338.076
    Language: German
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  • 2
    Publication Date: 2017-09-05
    Description: The delimitation of the invasive moss species Campylopus introflexus from its closest relative, Campylopus pilifer , has been long debated based on morphology. Previous molecular phylogenetic reconstructions based on the nuclear ribosomal internal transcribed spacers (ITS) 1 and 2 showed that C. pilifer is split into an Old World and a New World lineage, but remained partly inconclusive concerning the relationships between these two clades and C. introflexus . Analyses of an extended ITS dataset displayed statistically supported incongruence between ITS1 and ITS2. ITS1 separates the New World clade of C. pilifer from a clade comprising C. introflexus and the Old World C. pilifer . Ancestral state reconstruction showed that this topology is morphologically supported by differences in the height of the dorsal costal lamellae in leaf cross-section (despite some overlap). ITS2, in contrast, supports the current morphological species concept, i.e., separating C. introflexus from C. pilifer , which is morphologically supported by the orientation of the hyaline hair point at leaf apex as well as costal lamellae height. Re-analysis of published and newly generated plastid atpB-rbcL spacer sequences supported the three ITS lineages. Ecological niche modeling proved a useful approach and showed that all three molecular lineages occupy distinct environmental spaces that are similar, but undoubtedly not equivalent. In line with the ITS1 topology, the C. pilifer lineage from the New World occupies the most distinct environmental niche, whereas the niches of Old World C. pilifer and C. introflexus are very similar. Taking the inferences from ecological niche comparisons, phylogenetics, and morphology together, we conclude that all three molecular lineages represent different taxa that should be recognized as independent species, viz. C. introflexus , C. pilifer (Old World clade), and the reinstated C. lamellatus Mont. (New World clade). Delimiting the invasive moss species Campylopus introflexus from its relatives is a decades-long challenge. Using a multi-source dataset of molecular phylogenetics, morphology, and ecological niche comparisons, we conclude that even though they are similar, each molecular lineage is a unique and independent species.
    Electronic ISSN: 2045-7758
    Topics: Biology
    Published by Wiley-Blackwell
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