Department of Biological and Environmental Sciences / Institutionen för biologi och miljövetenskap (2012-): Recent submissions
Visas titlar 41-60 av 106
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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 ... -
The influence of herbivory on shrub expansion in the Scandes forest-tundra ecotone
(2016-12-13)Arctic and alpine ecosystems are experiencing fundamental changes in vegetation composition due to increasing temperatures. One of the most palpable of these changes is the expansion of shrubs on the treeless tundra, ... -
Carbon and nutrient cycling in Afromontane tropical forests at different successional stages
(2016-11-18)To date, studies of the carbon and nutrient cycling in tropical montane forests have been restricted to a few, mostly neotropical, sites. This thesis investigated the carbon and nutrient cycling of early (ES) and late (LS) ... -
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 ... -
Role of mycorrhiza symbiosis and phosphorus nutrition in plant growth, photosynthesis and secondary metabolism
(2016-09-30)Inorganic phosphorus (Pi) is an important and often limiting nutrient for plants. Large amounts of Pi fertilizers derived from non-renewable rock phosphorus, are used in agriculture. These are applied in excess but crops ... -
Microbial Biofilms in the Bioinformatics Era
(2016-05-30)Adverse effects of anthropogenic impact on the environment have become conspicuous in the past century and among others include the gradual increase in the global CO2 levels, the contamination of air, soil and water by ... -
Migration in anadromous brown trout
(2016-02-16)This thesis investigates the anadromous migration of brown trout (Salmo trutta) with the overall aim to improve stock management within the region. Several field studies were conducted in different streams and coastal areas ... -
Insights into Marine Fish Physiology in a Changing World
(2016-01-15)Ocean acidification and global warming are largely caused by increased levels of atmospheric CO2, and marine fish are exposed to both these stressors simultaneously. Although the effects of temperature on fish have been ... -
Leptin endocrinology and energy homeostasis in salmonids
(2015-12-28)In salmonids, the physiological role of leptin is not completely elucidated. Nonetheless, the anorexigenic effect of leptin indicates a role in their energy homeostasis. This thesis focuses on advancing the understanding ... -
Tree stomatal regulation and water use in a changing climate - From tropical to boreal ecosystems
(2015-11-12)Rising levels of atmospheric carbon dioxide concentration ([CO2]) and temperature have the potential to alter stomatal behavior and tree water use, which has implications for forest hydrology and climate. Many models ... -
The Pace of Life of Juvenile Brown Trout - Inter- and Intra-individual Variation in Growth and Behaviour
(2015-10-09)The pace-of-life (POL) syndrome hypothesis is the prevailing model used for explaining the differences in how animals live their lives. The POL syndrome is a framework connecting life-history traits (traits describing the ... -
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 ... -
Skötsel av ekblandskogar: naturvårdsgallring och respons hos träd och buskar
(2015-09-24)Det senaste århundradet har skogsbruket intensifierats med storskaliga skogsplanteringar, speciellt gran, och brukande genom kalhyggen. Detta har inneburit en homogenisering av landskapet och många naturtyper har gått ... -
Ion Transport in Chloroplasts with Role in Regulation of Photosynthesis
(2015-09-14)Photosynthesis is the primary energy source of almost all ecosystems on Earth. Oxygenic photosynthesis has appeared approximately 2.4 billion years ago and has since then gradually evolved into the complex process that ... -
Colour signalling in widowbirds and bishops
(2015-08-28)Sexual selection, i.e. differential mating success due to contest competition or mate choice, has produced an amazing diversity of elaborate sexual signals across the animal kingdom, not least the dazzling colours of birds. ... -
The influence of atmospheric circulation and meteorology on urban air pollution and pollen exposure
(2015-05-18)Urban air quality is a global health concern and is a growing problem due to large migration of people from rural areas to cities, a phenomenon occurring in many parts of the world. This means that more and more people can ... -
Biomarkers for assessing benthic pollution impacts in a subtropical estuary, Mozambique
(2015-05-11)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 ... -
Next-generation Molecular Systematics and Evolution: insights into Medicago
(2015-04-29)Evolutionary relationships among species have in recent years been inferred using DNA sequences from specific genes and represented by tree diagrams (phylogenies). However, the signal contained in different genes can produce ... -
Patterns of evolution in a young species, the Baltic seaweed Fucus radicans
(2015-04-29)To be able to interpret patterns of biodiversity it is important to understand the processes by which new species evolve and how closely related species remain reproductively isolated and ecologically differentiated. This ... -
Plant pathogen defense: Signalling, resistance and cell death
(2015-03-31)Pathogenic microorganisms are present everywhere in nature and infect both animals and plants. Phytopathogenic microorganisms cause diseases on plants, and are responsible for crop loss amounting in the order billions of ...