Search for dissertations about: "south america"

Showing result 11 - 15 of 67 swedish dissertations containing the words south america.

  2. 11. Marsupial Mitogenomics

    Author : Maria Nilsson; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Genetics; Biologi; Biology; divergence times; K T-boundary; phylogenetic reconstruction; Ameridelphia; Australidelphia; Notoryctes; Dromiciops; Marsupialia; mitochondrial genomes; cytogenetics; Genetik; cytogenetik;

    Abstract : The relationships of the mammalian infraclass Marsupialia have been investigated by phylogenetic analysis using completely sequenced mitochondrial genomes. The organisation and structure of the marsupial mitochondrial genomes deviates from the general mammalian structure. READ MORE

  4. 12. Evolutionary relationships within the Lysimachia complex : with special emphasis on Anagallis

    Author : Ulrika Manns; Arne A. Anderberg; Katarina Andreasen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Systematics and phylogenetics; Systematik och fylogeni; växtsystematik; Plant Systematics;

    Abstract : This thesis focuses on Anagallis, an herbaceous genus with a distribution mainly in (sub-) tropical Africa, Madagascar or South America. A few species are found in drier climate. Anagallis is considered close to Lysimachia, separated based on mode of capsule dehiscence. READ MORE

  5. 13. Natural products from Bolivian plants

    Author : José Vila; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; lichens; Secondary metabolites; Bolivian plants;

    Abstract : Bolivia has the most varied ecology in South America - the Amazonas rainforests, the dry forests of the Chaco, the mist forests, the punas and high Andean vegetation. Some general studies have been carried out on useful plants; traditional medicine has been practiced in parts of region for thousands of years, recognized and accepted for treatment of various diseases. READ MORE

  6. 14. Evolutionary history of the butterfly subfamily Satyrinae (Lepidoptera: Nymphalidae)

    Author : Carlos Peña; Niklas Wahlberg; Roderic Page; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; hostplant use; habitat shift; diversity; grasses; biogeography; phylogeny; Molecular biology; Molekylärbiologi; zoologisk ekologi; Animal Ecology;

    Abstract : I present an overview of the evolutionary history of Satyrinae butterflies (Lepidoptera: Nymphalidae). By using Bayesian and cladistic methods, I develop a phylogenetic hypothesis as a basis for studying the evolutionary history of the group. READ MORE

  7. 15. Phylogenetic studies of Elymus s.s. L. (Poaceae) : plant systematics as a prerequisite for efficient conservation and utilization

    Author : Jonatan Leo; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Elymus (wild-rye), in the tribe Triticeae, is a diverse genus and contains about 150 species growing in a wide range of habitats in temperate areas all over the world. The species are wild relatives to some of the most important cereal crops like bread wheat, durum wheat, rye, and barley. READ MORE