Search for dissertations about: "estuaries"

Showing result 11 - 15 of 22 swedish dissertations containing the word estuaries.

  2. 11. Local adaptation in life history traits and population size estimation of aquatic organisms

    Author : Konrad Karlsson; Monika Winder; Johan Ehrlén; Juha Merilä; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; local adaptation; intraspecific variation; niche partitioning; life history; global warming; recreational angling; spatial capture–recapture; Marine Ecology; marin ekologi;

    Abstract : Human society is dependent on healthy aquatic ecosystems for our basic needs and well-being. Therefore, knowledge about how organisms respond and interact with their environments is pivotal. READ MORE

  4. 12. External Growth Control of Baltic Sea Cyanobacteria

    Author : Anna Zakrisson; Ulf Larsson; Jakob Walve; Elena Gorokhova; Catherine Legrand; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; Baltic Sea; diazotrophs; diazotrophy; heterocysts; primary productivity; stable isotopes; sewage treatment; Marine Ecology; marin ekologi;

    Abstract : The overall aim of the study was to provide better insights to the ecological role and impact of cyanobacteria in Baltic Sea (BS) bay, coastal and open sea areas. Biomass and heterocyst development of diazotrophic, heterocystous cyanobacteria were monitored over several years simultaneously as physical parameters such as nutrients and temperature. READ MORE

  5. 13. Biomarkers for assessing benthic pollution impacts in a subtropical estuary, Mozambique

    Author : Maria Perpétua Janeiro Scarlet; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; subtrophical estuary; contaminants; biological hierarcial biomarkers; scope for growth; burrowing response; acethylcholinesterase; benthic fauna; southern Mozambique;

    Abstract : This thesis focuses on the marine environment in a subtropical estuary and particularly on exploring a suite of easy-to-use, cost effective and environmentally valid biological response tools (biomarkers). The main driving force of the thesis is the knowledge of the numerous anthropogenic impacts. READ MORE

  6. 14. Picophytoplankton seasonal dynamics in the Baltic Sea

    Author : Javier Alegria Zufía; Hanna Farnelid; Catherine Legrand; Nathan Ahlgren; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; picophytoplankton; Synechococcus; picoeukaryote; phycoerythrin; phycocyanin; ammonium; nitrate; 16S rDNA; flow cytometry; grazing; viral lysis; seasonality; Akvatisk ekologi; Aquatic Ecology;

    Abstract : Picophytoplankton (15°C there was a preference for ammonium over nitrate. Clade A/B dominated the SYN community, except during summer at the coastal station when low nitrate and warm temperatures promoted S5.2 dominance. Grazing was observed to control SYN and PPE abundances and had an effect on the SYN community structure. READ MORE

  7. 15. An evaluation of the distributions of polychlorinated biphenyls and organic matter in coastal sediments

    Author : Anders Jönsson; Örjan Gustafsson; Detlef Schulz-Bull; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polychlorinated biphenyls PCBs ; organic carbon; sediment; stable carbon isotopes; Earth sciences; Geovetenskap;

    Abstract : The objective of this thesis is to improve the understanding of what processes and mechanism affects the distribution of polychlorinated biphenyls (PCBs) and organic carbon in coastal sediments. Because of the strong association of hydrophobic organic contaminants (HOCs) such as PCBs with organic matter in the aquatic environment, these two entities are naturally linked. READ MORE