Search for dissertations about: "lake littoral"

Showing result 1 - 5 of 16 swedish dissertations containing the words lake littoral.

  1. 1. Coarse detritus in oligotrophic lake littoral zones utilization by intervertebrates and contribution to carbon flow

    Author : Irene Bohman; Högskolan i Kalmar.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Shredders; Biodiversity; Ecosystem; Limnology; Nattsländor; Sjöar; Kol; Biologisk nedbrytning; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Freshwater ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi Limnisk ekologi; Akvatisk ekologi; Aquatic Ecology;

    Abstract : Syftet med denna avhandling är att öka förståelsen av hur grovt organiskt material, sk grovdetritus, tex löv och makrofytrester, bryts ner i sjöars strandzoner. Motivet bakom intresset för detta är att små näringsfattiga sjöar i skogsrika områden ofta är beroende av tillförsel av energi utifrån och att nedbrytningen av grovdetritus är relativt lite undersökt i sjöar. READ MORE

  2. 2. Solar radiation effects on decomposition and decomposers of plant litter in lakes

    University dissertation from Department of Limnology, Ecology Building, Sölveg. 37, 223 62 Lund, Sweden

    Author : Måns Denward; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; glucosidase; photo inhibition; photo oxidation; littoral; lakes; ergosterol; fungi; phragmites; bacteria; UV-B; Hydrobiology; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi;

    Abstract : This thesis summarizes the results of a series of experiments, from test tube up to field study scale, performed to increase the understanding of solar radiation effects on decomposition and microbial decomposers of plant litter in stagnant water of littoral zones. In conclusion, I suggest that fungi play a significant role in the decomposition of plant litter submersed in lakes, and that their distribution is dependent on detritus quality and water chemistry, but also tends to be inversely related to the occurrence of bacteria attached to the litter. READ MORE

  3. 3. Ecology across Boundaries Food web coupling among and within ecosystems

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Pia Bartels; Uppsala universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; cross-ecosystem; food web; habitat coupling; terrestrial-aquatic linkages; subsidy; allochthonous; lake ecosystem; population divergence; trait variation; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Freshwater ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Limnisk ekologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Abstract : Cross-boundary movements of energy and material are ubiquitous. Freshwater ecosystems receive nutrients, dissolved, and particulate organic matter from adjacent terrestrial ecosystems, whereas terrestrial ecosystems mainly receive prey organisms and detritus deposited by physical processes such as floods from freshwater ecosystems. READ MORE

  4. 4. The potential of an unmanned aircraft system for surveying lake and river vegetation

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Eva Husson; Luleå tekniska universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Landscape Ecology; Landskapsekologi;

    Abstract : Vegetation in and along aquatic systems has important regulatory and ecological functions. Aquatic vegetation is also frequently used as an indicator of environmental conditions. To enhance our knowledge of the complex natural processes in the littoral zone, i.e. READ MORE

  5. 5. Benthic-Pelagic Microbial Interactions and Carbon Cycling in Clearwater Lakes

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Eva Andersson; Uppsala universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; microphytobenthos; phytoplankton; heterotrophic bacteria; interactions; nutrients; carbon cycling; clearwater lakes; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Abstract : This thesis focuses on the interactions among microbiota in clearwater lakes. Field sampling and field experiments were performed to evaluate interactions among microbiota and the importance of benthic versus pelagic microbiota in terms of biomass and production. In addition, carbon cycling in an oligotrophic clearwater lake was calculated. READ MORE