Browsing Doctoral Theses / Doktorsavhandlingar Institutionen för biologi och miljövetenskap by Title
Now showing items 28-47 of 111
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Ecological aspects of marine Vibrio bacteria - Exploring relationships to other organisms and a changing environment
(2013-02-04)Heterotrophic bacteria of the genus Vibrio are indigenous in the marine environment although environmental cues regulate their growth and distribution. The attention brought to this genus is due to its many species/strains ... -
Ecological risk screening of metal (Pb and Zn) contaminated acidic soil using a triad approach
(2013-05-14)Lead (Pb) and zinc (Zn) are common metal contaminants in terrestrial environments. Decisions on remediation of metal contaminated soil are often based on risk estimates derived from generic guideline values. Guideline ... -
Ecophysiology of Polar Sea Ice Microorganisms in a Changing World
(2015-10-05)Earth’s oceans are predominantly cold, with nearly 90% of their volume having temperatures below 5 °C. Microorganisms commonly referred to as psychrophiles have adapted to the temperatures of these cold waters. The most ... -
Ecotoxicology of antifouling biocides - with special focus on the novel antifoulant medetomidine and microbial communities
(2013-09-16)Marine biofouling, growth on submerged surfaces, is a problem for the commercial shipping industry but also for recreational boat owners. It leads to increased fuel consumption, loss of maneuverability and is a source of ... -
Effects of carbon dioxide and ozone on wheat crop yield and grain quality
(2021-10-05)Atmospheric concentrations of carbon dioxide (CO2) and ozone (O3) have steadily increased since the industrial revolution. CO2 and O3 directly affect plant physiology, CO2 being an essential substrate for photosynthesis, ... -
Effects of contaminant mixtures on marine zooplankton diversity and function
(2023-05-02)Chemicals have important roles in our society and can be used as ingredients in personal care products, pesticides, pharmaceuticals, as well as be components of fuels used in cars or ships. More than 350 000 chemicals and ... -
Effects of mixtures of endocrine disrupting chemicals – Thyroid disruption and behavioural effects in fish models
(2022-01-07)Wildlife and humans are continuously exposed to thousands of man-made compounds, including chemicals that are able to act as endocrine disruptors (EDCs). These pollutants are able to affect vital processes including brain ... -
Environmental drivers of gelatinous zooplankton distribution. Mnemiopsis in the Swedish waters
(2013-09-02)Factors governing zooplankton distributions and dispersal have since long interested pelagic ecologists. This thesis presents studies of how the interaction between gelatinous zooplankton and the environment can shape their ... -
Evolution of the brown algae Fucus radicans and F. vesiculosus in the Baltic Sea
(2013-04-25)The aim of my thesis was to investigate neutral and adaptive evolution of a lineage of macroalga (Fucus vesiculosus) that entered the Baltic Sea about 6000 years ago, and later gave rise to a new endemic species, F. radicans. ... -
Evolutionary genetics and consequences of inbreeding in sand lizards (Lacerta agilis)
(2021-05-04)Inbreeding is a well-known phenomenon in evolutionary and conservation biology. In the 19th century, Charles Darwin demonstrated the detrimental effects of inbreeding in plants, followed by over a century of extensive ... -
Exploring the species boundaries in terrestrial clitellates (Annelida: Clitellata)
(2016-10-26)The biological diversity in the soil is much higher than most people can imagine, and a very important group of animals living there are earthworms and other clitellate worms. It has been found that several clitellate ... -
Fish coping with stress-Physiology and behaviour in salmonids with focus on stress coping styles, rearing conditions and smolt migration
(2017-03-10)When animals are reared for conservational releases it is paramount to avoid reducing genetic and phenotypic variation over time. Therefore, an understanding of how behavioural and physiological traits affect the performance ... -
From geography to genes: evolutionary perspectives on salinity tolerance in the brackish water barnacle Balanus improvisus
(2014-02-03)How species respond to changes in their environment is a fundamental question in biology. This has become an increasingly important issue as anthropogenic effects of climate change and biological invasions have major impacts ... -
Gastrointestinal motility and blood flow in teleosts during digestion and osmoregulation
(2017-01-20)Teleost fishes occupy virtually every aquatic habitat on earth and as a group face a wide range of environmental challenges in their natural habitats, as well as during their life histories. In order to survive and thrive ... -
Gene expression and regeneration in ophiuroids: A study of transcriptional activity and regeneration in the temperate Amphiura filiformis and Antarctic Ophionotus victoriae
(2012-11-01)Regeneration, in which lost or damaged tissues are re-grown, is a common phenomenon amongst animals and especially so within the ophiuroids (brittle stars) of the phylum echinodermata. The process of regeneration begins ... -
Grazer-induced responses in marine phytoplankton
(2012-09-27)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 ... -
Hazard assessment of ciprofloxacin, sulfamethoxazole and triclosan for marine periphyton : Ecotoxicology, Pollution Induced Community Tolerance and Co-Tolerance
(2014-09-29)Antibiotics and personal care products are used in large quantities and commonly detected in various environmental compartments. The two antibiotics, ciprofloxacin and sulfamethoxazole, and the personal care product triclosan ... -
Heathlands – A Lost World?
(2019-05-03)Heathland is a familiar landscape type in southwest Sweden. It is open with few trees, and the vegetation is dominated by dwarf-shrubs growing on nutrient-poor soils. Dry heaths with Heather Calluna vulgaris and wet heaths ... -
Herbivory and biodiversity conservation of the savannah habitats in Akagera National Park, Rwanda
(2013-04-05)Savannahs make up about 20% of the world’s land surface, whereas African savannahs constitute 50% of the land area and have been used as parks to conserve nature and for outdoor recreation. However, conserving biodiversity ... -
Hey ho, let's go! Vesicle transport in chloroplasts
(2017-02-03)The photosynthetic reactions have been thoroughly studied, but less is known about the biogenesis of the structures harboring the photosynthetic machinery: the thylakoid membranes. Lipids, constituting both the envelopes ...