Sökning: "marine biology"

Visar resultat 1 - 5 av 314 avhandlingar innehållade orden marine biology.

  1. 1. Phenotypic variation and adaptive strategies in calcifying marine phytoplankton (Coccolithophores)

    Detta är en avhandling från Uppsala universitet

    Författare :Luka Supraha; Uppsala universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  2. 2. Marine Seaweed Invasions the Ecology of Introduced Fucus evanescens

    Detta är en avhandling från Stockholm : Botaniska institutionen

    Författare :Sofia A. Wikström; Stockholms universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biological invasions; marine; seaweed; algae; herbivory; enemy release hypothesis; phlorotannins; anti-fouling; Fucus evanescens; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi;

    Sammanfattning : Biological invasions are an important issue of global change and an increased understanding of invasion processes is of crucial importance for both conservation managers and international trade. In this thesis, I have studied the invasion of the brown seaweed Fucus evanescens, to investigate the fate and effect of a perennial, habitat-forming seaweed introduced to a coastal ecosystem. LÄS MER

  3. 3. Genomic and morphological diversity of marine planktonic diatom-diazotroph associations a continuum of integration and diversification through geological time

    Detta är en avhandling från Stockholm : Department of Ecology, Environment and Plant Sciences, Stockholm University

    Författare :Andrea Caputo; Rachel Ann Foster; Monika Quinones Winder; Ramon Massana; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; phytoplankton; diatoms; cyanobacteria; diazotrophs; symbiosis; evolution; phylogenetics; confocal microscopy; qPCR; CARD-FISH; tropics; sub-tropics; marin ekologi; Marine Ecology;

    Sammanfattning : Symbioses between eukaryotes and nitrogen (N2)-fixing cyanobacteria (or diazotrophs) are quite common in the plankton community. A few genera of diatoms (Bacillariophyceae) such as Rhizosolenia, Hemiaulus and Chaetoceros are well known to form symbioses with the heterocystous diazotrophic cyanobacteria Richelia intracellularis and Calothrix rhizosoleniae. LÄS MER

  4. 4. Pigment and Thiamine Dynamics in Marine Phytoplankton and Copepods

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Ingrid Wänstrand; Uppsala universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; phytoplankton composition; pigments; chemotaxonomy; inorganic nutrients; pelagic copepods; grazing; astaxanthin; thiamine; mesocosm experiments; marine food webs; eutrophication; Baltic Sea; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : Based on a field study and several mesocosm experiments, I evaluated the use of pigments as chemotaxonomical biomarkers for phytoplankton community composition in the Baltic Sea and I examined effects of inorganic nutrients on the dynamics of carotenoids and thiamine (vitamin B1) at the phytoplankton–copepod level in marine pelagic food webs.My results show that HPLC pigment analysis combined with CHEMTAX data processing was an accurate alternative to microscopic analysis of Baltic Sea phytoplankton. LÄS MER

  5. 5. HABITAT CHOICE OF BENTHIC SHRIMPS - Results and discussions on shrimp sampling from the Gullmar Fjord on the Swedish west coast, the Faeroe Islands, Inhaca Island in southern Moçambique and the shelf slope of the Bahamas

    Detta är en avhandling från Göteborg : Vasatadens Bokbinderi AB

    Författare :Matz S. Berggren; Göteborgs universitet.; Gothenburg University.; [1994]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Marine caridea; associated shrimps; Habitat choice;

    Sammanfattning : .... LÄS MER