Browsing Doctoral Theses / Doktorsavhandlingar Institutionen för marina vetenskaper by Title
Now showing items 1-20 of 39
-
Biodiversity and Ecosystem Functioning - What Diversity? Which Functioning?
(2017-05-12)We share our planet with an estimated 8.7 million eukaryotic species and an uncountable number of bacteria and archaea. But that amazing diversity is under threat from overexploitation, habitat destruction and climate ... -
Carbon and nitrogen fluxes associated to marine and estuarine phytoplankton
(2018-05-14)Globally, mainly nitrogen or phosphorus is limiting the primary production. New nitrogen can enter estuarine ecosystems as nitrate from upwelling events, from river runoff, atmospheric deposition, or by nitrogen fixation. ... -
Carbon cycling in Baltic Sea sediments – In situ investigations with benthic landers
(2018-05-25)Coastal seas, estuaries and continental shelves are the connection between land and the open ocean, and due to high productivity and strong influence from land a majority of the marine organic carbon (OC) cycling and ... -
Carbon outwelling and greenhouse gas exchange across mangrove seascapes
(2024-08-09)Mangroves, renowned for their high primary productivity and carbon burial rates, play a crucial role in the ocean carbon cycle. However, uncertainties persist regarding the fate of mangrove-derived carbon across seascapes. ... -
Connections between biodiversity and ecosystem functioning in large-scale natural ecosystems
(2023-11-21)Billions of years of evolution have given us a planet that supports a remarkable diversity of life. Estimates for the number of Eukaryotic species frequently number in the millions and the Prokaryotes are much more diverse ... -
Crossing barriers: Genetic consequences of translocating wild cleaner fish for aquaculture
(2022-04-21)Several species of fish show a symbiotic cleaning behaviour, where they assist other species by feeding and removing dead skin or ectoparasites. Some of these cleaner fish species are used as a low-cost parasite control ... -
Dispersal of Microalgae- the role of Biological and Physical Barriers
(2015-09-04)Microalgae are only a few micrometres to a millimetre in size, yet they constitute the base for aquatic food webs and are extremely important drivers in elemental cycling. Long it has been assumed that small organisms (<1 ... -
Drivers affecting seagrass meadows: An approach for conservation and restoration in Mozambique
(2024-09-30)Seagrasses and other shallow-water vegetation are important coastal habitat because they provide many ecosystem services, including food, shelter and nursery areas of shellfish and finfish as well as marine endangered ... -
Early Life History of the cold-water coral Lophelia pertusa - with implications for dispersal
(2016-03-18)For sessile marine invertebrates the pelagic larval stage is the only means for dispersal, and thus govern population connectivity and maintenance of genetic diversity. It is also a kind of life insurance, i.e. it reduces ... -
Estimating the Air-Water Gas Transfer Velocity during Low Wind Conditions
(2016-04-06)The abundances of atmospheric carbon dioxide, CO2, and methane, CH4, are increasing. These increases affect e.g., the global carbon cycle and the climate both regionally and globally. To better understand the present and ... -
Evaluation of suitable nursery areas for penaeid shrimps in shallow water systems in southern Mozambique
(2017-10-09)Tropical shallow water habitats such as estuaries, mangrove forests and seagrass beds are important nursery areas for juveniles of many commercially important species including penaeid shrimp. Penaeids are one of the most ... -
Evolutionary and Ecological Effects of Metal Pollution on Coastal Diatoms
(2022-10-21)Oceans are changing rapidly in response to human activities, such as toxic pollution, eutrophication, and climate change. Diatoms are major primary producers in the oceans with short generation times, flexible reproductive ... -
From alpha to beta ocean: Exploring the role of surface buoyancy fluxes and seawater thermal expansion in setting the upper ocean stratification
(2023-12-05)The ocean plays a central role in the climate system by absorbing excess anthropogenic heat and carbon dioxide. Moreover, the ocean circulation distributes heat from the tropics towards the poles. Due to the large ocean ... -
From Sea to Society - Climate Change, Microbial Community Interactions and Assessing Climate Risk on Society
(2017-11-11)Unicellular organisms, microalgae and bacteria, less than one millimeter in size make the world go round. Phytoplankton and cyanobacteria, for example, plays an inevitable role contributing 50-85% to the world’s oxygen ... -
Genetic structuring in natural populations - the influence of life history strategies and asymmetric migration
(2016-09-09)In this thesis I investigate aspects of genetic differentiation and factors influencing the structure of populations. This is done with a special focus on life histories and dispersal strategies common in the marine ... -
Habitat-Forming Seaweeds in a Changing Climate
(2021-05-19)Climate change is an umbrella term encompassing some of the largest and most potent selective pressures currently acting on ecosystems. It can have diverse effects on marine systems; the most powerful of which are changes ... -
Methane offsets to carbon sequestration in coastal ecosystems
(2024-11-08)Mangroves, saltmarshes, and seagrasses are known as blue carbon ecosystems because of their high rates of productivity and efficiency in sequestering carbon. Carbon can be stored in sediments, biomass, exported laterally ... -
Microbial degradation of wooden foundation piles in urban context – causes and concerns
(2022-05-18)Modern infrastructural projects can endanger historical piled foundations supporting cultural heritage buildings, as groundwork can affect the subsurface environment by lowering the local groundwater level and increasing ... -
Modelling the Evolution of Species’ Ranges
(2022-09-16)The fact that species have limited ranges is often due to a limited ability to adapt to the environmental conditions that occur outside their geographic ranges. However, due to ongoing climate change, the environmental ... -
New Perspectives in Multi-trophic Aquaculture
(2021-05-26)Aquaculture, the farming of marine and aquatic organisms, is currently the fastest growing food production sector globally. As capture fisheries have stagnated and the fishing down of marine food webs has been seen to be ...