Sökning: "brown algae"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden brown algae.

  1. 1. Polymer extraction and utilization of brown algal biomass

    Författare :Martin Sterner; Ulrica Edlund; Fredrik Gröndahl; Marguerite Rinaudo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algae; Saccharina latissima; alginate; brown seaweed; extraction; filament; chelation; gel; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Aquaculture is a field with a world changing potential. The areas at sea are enormous and aquatic cultivations impact both the environment and local ecology far less than land based cultivations. In the realm of algae, abundancies exists of nutrition, water and accessible sunlight, but there is constant shortage of places to dwell. LÄS MER

  3. 2. Physiological adaptations in two ecotypes of Fucus vesiculosus and in Fucus radicans with focus on salinity

    Författare :A Maria Gylle; Nils GA Ekelund; Stefan Falk; Pauli Snoeijs; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bothnian Sea; brackish; brown algae; D1; 77 K fluorescence emission; Fucus vesiculosus; Fucus radicans; light-harvest antenna; mannitol; marine; NMR; Norwegian Sea; quantum yield; photosynthetic maximum capacity Pmax ; photosystem; PSI; PSII ; PsaA; Rubisco; salinity.; Biology; Biologi; Plant physiology; Växtfysiologi;

    Sammanfattning : The in origin intertidal marine brown alga Fucus vesiculosus L. grow permanently sublittoral in the brackish Bothnian Sea, side by side with the recently discovered F. radicans L. Bergström et L. LÄS MER

  4. 3. Marine Seaweed Invasions : the Ecology of Introduced Fucus evanescens

    Författare :Sofia A. Wikström; Lena Kautsky; Ove Eriksson; Paul Lavery; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biological invasions; marine; seaweed; algae; herbivory; enemy release hypothesis; phlorotannins; anti-fouling; Fucus evanescens; Terrestrial; freshwater and marine ecology; 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

  5. 4. Phlorotannins in intertidal brown algae: inducing factors and ecological roles

    Författare :Elisabet Brock; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  7. 5. Lake bathymetry as driver of salmonid population size structure and biomass

    Författare :Sven Norman; Pär Byström; Karin A. Nilsson; Jan Karlsson; Per-Arne Amundsen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lake bathymetry; habitat-specific resource production; ontogenetic niche shifts; size structure; Arctic char; brown trout; populationsbiologi; Population Biology; Limnology; limnologi; zooekologi; Animal Ecology;

    Sammanfattning : Most fish species undergo ontogenetic niche shifts from feeding on pelagic zooplankton, to larger benthic invertebrates and in some cases also to fish. These ontogenetic niche shifts have strong impact on the interactions within and between species, with effects on individual growth, population abundance and food web dynamics. LÄS MER