Search for dissertations about: "endemics"

Found 5 swedish dissertations containing the word endemics.

2. 1. Taxonomy and Reticulate Phylogeny of Heliosperma and Related Genera (Sileneae, Caryophyllaceae)

   Author : Božo Frajman; Bengt Oxelman; Mats Thulin; Christian Brochmann; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sileneae; Silene; Heliosperma; Atocion; Viscaria; taxonomy; phylogenetics; relative dating; reticulate evolution; chloroplast capture; homoploid hybridisation; BEAST; r8s; PATHd8; Prometheus; RPA2; RPB2; RPD2a; RPD2b; Balkan Peninsula; endemics; Systematics and phylogenetics; Systematik och fylogeni;

   Abstract : Heliosperma (nom. cons prop.) comprises 15—20 taxa, most of them endemic to the Balkan Peninsula. DNA sequences from the chloroplast (rps16 intron, psbE-petG spacer) and the nuclear genome (ITS and four putatively unlinked RNA polymerase genes) are used to elucidate phylogenetic relationships within Heliosperma, and its position within Sileneae. READ MORE

4. 2. Chronic kidney disease of unknown etiology in Central America and Sri Lanka : renal morphology and clinical characteristics

   Author : Julia Wijkström; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Background: Chronic kidney disease (CKD) is a global health problem. The most common etiologies of CKD are diabetes mellitus, hypertension, and glomerulonephritis, but over the last several decades a high prevalence of CKD of unknown etiology (CKDu) has been reported from rural communities in some tropical countries, including Central America, and Sri Lanka. READ MORE

5. 3. Systematics in Sileneae (Caryophyllaceae) – Taxonomy and Phylogenetic patterns

   Author : Frida Eggens; Bengt Oxelman; Magnus Lidén; Susan R. Kephart; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sileneae; Silene; RNAP; psbE-petG; ITS; rps16; relative dating; Rigidulae; Heliosperma; Arenosae; phylogeny; homoploid reticulate evolution; Silene linearis Decne.; Silene polyphylla L.; Hawaiian Silene; Systematics and phylogenetics; Systematik och fylogeni;

   Abstract : The focus for the first part of the thesis is on the systematics of species belonging to Silene subgenus Silene. Phylogenetic relationships are inferred from DNA sequences from both the plastid (the rps16 intron) and the nuclear (ITS, intron of the RPB2 gene) genomes. READ MORE

6. 4. Phylogenetic Relationships, Biogeography and Species Delimitation: A case study on southern African Silene (Caryophyllaceae)

   Author : Ntwai A. Moiloa; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Elisanthe; Illumina sequencing; Multispecies coalescent model; NGS; Phylogenetics; Phylogeography; species-trees; STACEY; target-capture;

   Abstract : The primary aim of this thesis was to explore the phylogenetic relationships and historical biogeography of African members of the plant genus Silene (Caryophyllaceae), with special focus on the eight native southern African taxa. Three loci (the nuclear ribosomal internal transcribed spacer region, and the rps16 and matK regions from the plastid genome) generated using traditional Sanger sequencing were used to infer the phylogenetic positions of African taxa, while sequence data from 28 low copy nuclear loci were generated using the target capture method to explore shallow phylogenetic relationships within southern African taxa. READ MORE

7. 5. Plant Species Composition and Diversity in Cliff and Mountain Ecosystems

   Author : Henrik Antonsson; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; cliff ecology; bryophytes; biodiversity; beta diversity; dispersal; facilitation; nurse plant; plant-plant interactions; Silene acaulis; stress;

   Abstract : Ecosystems today are under increasing pressure from a rapidly changing climate, changes in land-use, habitat fragmentation and degradation and increasing anthropogenic disturbance. Studying drivers of biodiversity patterns is of increasing importance for understanding the dynamics of communities and their reactions and adaptation to changes in the future. READ MORE