Sökning: "Jan-eric Mattsson"

Hittade 3 avhandlingar innehållade orden Jan-eric Mattsson.

  1. 1. Phylogenetic Studies in Usnea (Parmeliaceae) and Allied Genera

    Författare :Kristina Articus; Leif Tibell; Mats Wedin; Jan-Eric Mattsson; Philippe Clerc; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Usnea; Neuropogon; Dolichousnea; Eumitria; Protousnea; Parmeliaceae; phylogeny; taxonomy; species pairs; morphology; ITS-LSU; β-tubulin; mtSSU; Biologi; Biology; Biologi;

    Sammanfattning : This thesis deals with the phylogeny of the lichen genus Usnea (Parmeliaceae, Ascomycetes). The relationships and the morphological variation among Usnea species has been studied, as well as the relationship of Usnea to allied genera. Two species, U. florida and U. LÄS MER

  3. 2. Studies on spatial and temporal distributions of epiphytic lichens

    Författare :Håkan Lättman; Per Milberg; Jan-Eric Mattsson; Tord Snäll; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Lichens are an important group of organisms in terms of environmental issues, conservation biology and biodiversity, principally due to their sensitivity to changes in their environment. Therefore it is important that we develop our understanding of the factors that affect lichen distribution. LÄS MER

  4. 3. Phylogenetic and taxonomic studies within Arthonia Ach. (Ascomycetes, Arthoniales)

    Författare :Rikard Sundin; Jan-Eric Mattsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematics and phylogenetics; Systematik och fylogeni; Plant Systematics; växtsystematik;

    Sammanfattning : The taxonomy and phylogeny of the genus Arthonia was analysed. As a first step, a phylogenetic analysis was performed to test the monophyly of some of the infrageneric groups suggested by earlier authors. The results strongly support that Arthonia, Arthothelium and Arthoniaceae are paraphyletic. LÄS MER