Search for dissertations about: "water survival"

Showing result 21 - 25 of 135 swedish dissertations containing the words water survival.

  2. 21. The role of resting cysts in the survival and succession of freshwater dinoflagellates

    Author : Karin Rengefors; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; Biology; Biologi; limnologi; Limnology;

    Abstract : Phytoplankton have adapted to survive in the variable and heterogeneous environment that is characteristic of lakes in temperate regions. One strategy for survival during periods unfavorable for growth is to form resting propagules. READ MORE

  4. 22. Role of ion and water channels for lung growth in congenital diaphragmatic hernia

    Author : Andreas Ringman Uggla; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Early lung development is based on a continuous cross-talk of growth and transcription factors between the developing lung bud and the surrounding parenchyma. Throughout fetal life, pulmonary growth and differentiation depend on Cl- driven lung liquid secretion. READ MORE

  5. 23. Early Life History of the cold-water coral Lophelia pertusa - with implications for dispersal

    Author : Susanna Strömberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; larval development; life history traits; dispersal potential; morphology;

    Abstract : For sessile marine invertebrates the pelagic larval stage is the only means for dispersal, and thus govern population connectivity and maintenance of genetic diversity. It is also a kind of life insurance, i.e. it reduces the risk of extinctions. READ MORE

  6. 24. Re-establishment of connectivity for fish populations in regulated rivers

    Author : Olle Calles; Larry Greenberg; Lars Nyberg; David Scruton; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Attraction efficiency; Connectivity; Flow regime; Hyporheic water quality; Nature-like fishway; Passage efficiency; Regulated river; Remedial measures; Salmo trutta; Biology; Biologi; Biology; Biologi;

    Abstract : The hydropower industry has altered connectivity in many rivers during the last century. Many fish species depend on both an intact longitudinal connectivity to be able to migrate between spawning, feeding and winter habitats, and vertical connectivity for development and survival of incubating embryos and larvae in the gravel. READ MORE

  7. 25. Integrated Agriculture and Aquaculture Systems (IAA) for Enhanced Food Production and Income Diversification in Tanzania

    Author : Deogratias Mulokozi; Håkan Berg; Ian Bryceson; Stockholms universitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Smallholder farmers; Oreochromis niloticus; Amaranthus hybridus; food production; household income diversification; water use efficiency; farm net income; Physical Geography; naturgeografi;

    Abstract : Aquaculture production in Tanzania has increased in recent years, responding to an increased demand for fish, partly because of an increasing population and declining catches of wild fish. However, the current aquaculture production is still low, dominated by small scale farming systems, that are struggling with a number of challenges such as lack of improved fish breeds, feeds, technical skills and low adoption rates. READ MORE