Search for dissertations about: "phytoplankton and primary production"
Showing result 1 - 5 of 37 swedish dissertations containing the words phytoplankton and primary production.
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1. Effects of dissolved humic matter on phytoplankton
Abstract : Water colour is currently increasing in thousands of lakes in the northern hemisphere due to an increased input of terrestrial dissolved organic carbon (DOC), and more specifically coloured disscolved humic matter (DHM). I studied how water colour affects the light climate in the epilimnion and, as a consequence, phytoplankton biomass, species composition and production in lakes in southern Sweden. READ MORE
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2. Carbon metabolism in clear-water and brown-water lakes
University dissertation from Umeå : Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental SciencesAbstract : The trophic state of lakes is commonly defined by the concentration of nutrients in the water column. High nutrient concentrations generate high phytoplankton production, and lakes with low nutrient concentrations are considered low-productive. READ MORE
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3. Primary Marine Aerosol Production Studies using bubble-bursting experiments
University dissertation from Stockholm : Department of Applied Environmental Science (ITM), Stockholm UniversityAbstract : Aerosol particles affect the Earth’s climate, although their impact is associated with large uncertainties. Primary marine aerosol represents a significant fraction of the global aerosol budget considering the Earth’s 70-percentage coverage by oceans. READ MORE
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4. Effects of inorganic nitrogen and organic carbon on pelagic food webs in boreal lakes
University dissertation from Umeå : Umeå UniversityAbstract : Anthropogenic activities are increasing inorganic nitrogen (N) loadings to lakes in the northern hemisphere. In many boreal lakes phytoplankton are N limited, wherefore enhanced N input may affect the productivity of pelagic food webs. READ MORE
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5. Grazer-induced responses in marine phytoplankton
University dissertation from Umeå : Umeå UniversityAbstract : Phytoplankton are the most important primary producers in the world’s oceans, yet little is known of how they avoid the constant threats from the pelagic grazers. From land it is well known that plants defend themselves by having thorns or producing compounds unpalatable to grazers. READ MORE
