Browsing NTNU Open by Author "Bakke, Ingrid"
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A study of the interactions and dynamics of microbial communties
Pettersen, Jakob Peder (Master thesis, 2019)De seneste årene har strukturen, sammensetningen og interaksjonene i mikrobielle samfunn vært et hett tema i de vitenskapelig miljøene. En rekke næringer som havbruk, vannbehandling og helse har mye å tjene dersom en utvidet ... -
A year in the Arctic; Seasonal Dynamics of the Marine Prokaryote Community in Isfjorden, Svalbard
Astrid Poleszynski Hoel (Master thesis, 2020)Denne oppgaven representerer en pilot studie angående det marine prokaryotiske samfunnet ved IsA tidsseriestasjonen (78°N, 15°E) i Isfjorden, Svalbard. Vannprøver ble tatt på månedlig basis over et helt år (2019) ved ... -
An evolutionary preserved intergenic spacer in gadiform mitogenomes generates a long noncoding RNA
Jørgensen, Tor Erik; Bakke, Ingrid; Ursvik, anita; Andreassen, morten; Moum, Truls; Johansen, Steinar Daae (Journal article; Peer reviewed, 2014)Background: Vertebrate mitogenomes are economically organized and usually lack intergenic sequences other than the control region. Intergenic spacers located between the tRNAThr and tRNAPro genes (“T-P spacers”) have been ... -
Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea
Nordgård, Anna Synnøve Røstad; Bergland, Wenche Hennie; Vadstein, Olav; Mironov, Vladimir; Bakke, Rune; Østgaard, Kjetill; Bakke, Ingrid (Journal article; Peer reviewed, 2017)We examined the effect of ammonium and temperature on methane production in high rate upflow anaerobic sludge bed reactors treating pig manure supernatant. We operated four reactors at two ammonium concentrations (‘low’ ... -
Analytical challenges and characterization of skin and gut microbiota of Atlantic salmon fry in a commercial smolt production facility.
Udoye, Chinweike (Master thesis, 2018)Although the Atlantic salmon is an economically important specie, little information exist on the composition of its gut and skin microbiota during early lifestages. Fish microbiota play an essential role in health of fish ... -
Bacterial colonization of zebrafish (Danio rerio) and Atlantic salmon (Salmo salar) in gnotobiotic model systems
Anders Gjendemsjø (Master thesis, 2024)I plommesekkstadiet er oppdrettslaks (Salmo salar) spesielt sårbar for ugunstige mikrobielle betingelser, og høy dødelighet rapporteres ofte fra oppdrettsnæringen i dette livsstadiet. Dette kan til en viss grad tilskrives ... -
Bacterial community assembly in Atlantic cod larvae (Gadus morhua): Contributions of ecological processes and metacommunity structure
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Vadstein, Olav; Gundersen, Madeleine Stenshorne; Bakke, Ingrid (Peer reviewed; Journal article, 2020)Many studies demonstrate the importance of the commensal microbiomes to animal health and development. However, the initial community assembly process is poorly understood. It is unclear to what extent the hosts select for ... -
Bacterial Community Dynamics in a Biofilter exposed to a Micropollutant
Ophus, Mari (Master thesis, 2014)Perfluorooctanoic acid (PFOA) is a fluorinated compound used in many industrial and consumer products. It is environmentally persistent, widespread and bioaccumulative, and multiple toxicities have been reported in ... -
Biodegradation of oil films with different thicknesses in marine environments - Hydrocarbon degradation and microbial communities
Tronstad, Christina W (Master thesis, 2017)The purpose of this study is to examine the effect of different oil film thicknesses on the biodegradation rate and microbial communities, focusing on medium sized oil films (50-500 µl). Initially, three approaches for ... -
Biodegradation of weathered crude oil in seawater with frazil ice
Lofthus, Synnøve; Bakke, Ingrid; Tremblay, Julien; Greer, Charles; Brakstad, Odd Gunnar (Peer reviewed; Journal article, 2020)As ice extent in the Arctic is declining, oil and gas activities will increase, with higher risk of oil spills to the marine environment. To determine biotransformation of dispersed weathered oil in newly formed ice, oil ... -
Biological nitrogen removal in recirculating aquaculture systems (RAS): Adaptation of a biological treatment process based on partial nitrification and anammox to RAS conditions
Risnes, Lea (Master thesis, 2022)Biologisk vannrensing i resirkulerende akvakultur systemer (RAS) består vanligvis av nitrifisering, en bakteriell prosess der ammonium, et giftig restprodukt som skilles ut av fisk, omdannes til nitrat. Nitrat kan fjernes ... -
Biological Nitrogen Removal of Effluents from Amine-based CO2 Capture Plants: Screening, Feasibility and Limitations
Henry, Ingrid Annemarie (Doctoral theses at NTNU;2016:359, Doctoral thesis, 2016)Biological Treatment of Waste from Carbon Capture and Storage (CCS) – Screening, feasibility and limitations. Carbon capture and storage (CCS) is becoming an important technology to combat climate change. In CCS, carbon ... -
Changes in the microbial community of an anammox consortium during adaptation to marine conditions revealed by 454 pyrosequencing
Gonzalez Silva, Blanca Magdalena; Rønning, Are J.; Andreassen, Ingrid Krogrud; Bakke, Ingrid; Cervantes, Francisco J.; Østgaard, Kjetill; Vadstein, Olav (Journal article; Peer reviewed, 2017)The anammox activity of a freshwater anammox consortium was strongly inhibited at low-salinity level. Stepwise adaptation from 0 to 3 g NaCl L−1 took 153 days. Further adaptation to high-salinity concentration (from 3 to ... -
Characterising temporal dynamics in microbial communities from biofilm and water during commercial production of Atlantic salmon smolts in RAS
Gaarden, Sunniva Ingebrigtsen (Master thesis, 2020)Resirkulerende akvakultursystemer (RAS) har økt i popularitet i norsk oppdrett av atlantisk laksesmolt (Salmo salar). Muligheten til intensiv og kontinuerlig produksjon ved optimale temperaturer gjennom hele året, i tillegg ... -
Characterization of two Janthinobacterium isolates originating from salmon fry - Violacein operon sequences and growth conditions for violacein production
Lorentsen, Eirik Degré (Master thesis, 2020)Bakteriestammene som det ble jobbet med i dette prosjektet (MM5 og 3.116) var isolert fra skinnet til lakseyngel og ble klassifisert som Janthinobacterium (Betaproteobacteria, Oxalobacteraceae). Under tidligere arbeid i ... -
Commensal and opportunistic bacteria present in the microbiota in atlantic cod (Gadus morhua) larvae differentially alter the hosts’ innate immune responses
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar; Vadstein, Olav (Journal article; Peer reviewed, 2022)The roles of host-associated bacteria have gained attention lately, and we now recognise that the microbiota is essential in processes such as digestion, development of the immune system and gut function. In this study, ... -
Comparison of two field systems for determination of crude oil biodegradation in cold seawater
Langeloh, Hendrik Hinrich; Greer, Charles W.; Vergeynst, Leendert; Hakvåg, Sigrid; Øverjordet, Ida Beathe; Bakke, Ingrid; Sørensen, Lisbet; Brakstad, Odd Gunnar (Journal article; Peer reviewed, 2024)Marine oil spills have devastating environmental impacts and extrapolation of experimental fate and impact data from the lab to the field remains challenging due to the lack of comparable field data. In this work we compared ... -
Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua)
Forberg, Torunn; Sjulstad, Eli Bjørnø; Bakke, Ingrid; Olsen, Yngvar; Hagiwara, Atsushi; Sakakura, Yoshitaka; Vadstein, Olav (Journal article; Peer reviewed, 2016)The vertebrate gut is host to large communities of bacteria, and one of the beneficial contributions of this commensal gut microbiota is the increased nutritional gain from feed components that the host cannot degrade on ... -
Correlations of age and growth rate with microbiota composition in Atlantic cod (Gadus morhua) larvae
Trinh, Ly T. T.; Bakke, Ingrid; Vadstein, Olav (Journal article; Peer reviewed, 2017)Little information is available on the link between host development (growth rate and ontogeny) and the composition of the microbiota in fish larvae. This study was carried out to examine potential correlations of microbiota ... -
Deammonifisering av Rejekt Forbehandlet med Termisk Hydrolyse
Johnsen, Josefin (Master thesis, 2019)Cambi sin termiske hydrolyse prosess(THP) er en kjent og effektiv forbehandlingsprosess for slam før den stabiliseres i en råtnetank. Vannstrømmen som resulterer etter at det fordøyde slammet er avvannet, er rik på ammonium ...