Browsing Department of Biological Sciences by Title
Now showing items 1452-1471 of 1881
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Quantification and localization of StAR expression in Atlantic cod ovaries
(Master thesis, 2009-06-02)Steroidogenesis is essential for the production of sex steroids, and therefore also the sexual maturation process. The rate-limiting step in steroidogenesis is the movement of cholesterol from the outer to the inner ... -
Quantification of grazing efficacy, growth and health score of different lumpfish (Cyclopterus lumpus L.) families: possible size and gender effects
(Journal article; Peer reviewed, 2021)To investigate the possible family influence on sea lice grazing of lumpfish on Atlantic salmon, ten families of lumpfish (N = 480) with a mean (± SD) weight of 54.8 ± 9.2 g were distributed among ten sea cages (5 × 5 × 5 ... -
Quantifying recent ecological changes in remote lakes of North America and Greenland using sediment diatom assemblages
(Peer reviewed; Journal article, 2010-04-02)Background Although arctic lakes have responded sensitively to 20th-century climate change, it remains uncertain how these ecological transformations compare with alpine and montane-boreal counterparts over the same interval. ... -
Quantifying the roles of seed dispersal, filtering, and climate on regional patterns of grassland biodiversity
(Journal article; Peer reviewed, 2020)Seed dispersal and local filtering interactively govern community membership and scale up to shape regional vegetation patterns, but data revealing how and why particular species are excluded from specific communities in ... -
Quantitative assessment of visual microscopy as a tool for microplastic research: Recommendations for improving methods and reporting
(Journal article; Peer reviewed, 2022)Microscopy is often the first step in microplastic analysis and is generally followed by spectroscopy to confirm material type. The value of microscopy lies in its ability to provide count, size, color, and morphological ... -
Quantitative microbial ecology off the northern Antarctic Peninsula. Antarctic microbial ecology
(Doctoral thesis, 2010-06-22)The waters surrounding the South Shetland Islands, Antarctica, comprise a coastal/oceanic ecosystem that is iron-fertilized naturally from shelf sources of Weddell Sea origin. My thesis incorporates data from an 18-year ... -
Quantitative molecular detection of larval Atlantic herring (Clupea harengus) in stomach contents of Atlantic mackerel (Scomber scombrus) marks regions of predation pressure
(Journal article; Peer reviewed, 2021)Mortality rates in the early life-history stages of fishes are generally high yet identifying the causes remain unclear. Faltering recruitment rates of Atlantic herring (Clupea harengus) in the Norwegian Sea indicate a ... -
Quantitative multiproxy assessment of long-term patterns of Holocene environmental change from a small lake near Abisko, northern Sweden
(Peer reviewed; Journal article, 2002)Quantitative reconstructions are made of Holocene changes in climatic and environmental conditions from analyses of pollen, chironomids and diatoms in identical stratigraphic levels of a sediment core from Vuoskkujávri ... -
Quantitative proteomics analysis of zebrafish exposed to sub-lethal dosages of β-methyl-amino-L-alanine (BMAA)
(Peer reviewed; Journal article, 2016-07-12)The non-protein amino acid β-methylamino-L-alanine (BMAA) is a neurotoxin present in microalgae and shown to accumulate in the food web. BMAA has been linked to the complex neurodegenerative disorder of Guam and to increased ... -
Quantitative reconstruction of precipitation changes on the NE Tibetan Plateau since the Last Glacial Maximum - extending the concept of pollen source area to pollen-based climate reconstructions from large lakes
(Peer reviewed; Journal article, 2014-01-08)Pollen records from large lakes have been used for quantitative palaeoclimate reconstruction, but the influences that lake size (as a result of species-specific variations in pollen dispersal patterns that smaller pollen ... -
Quorum sensing and biofilm formation potential in Norwegian Tenacibaculum dicentrarchi isolates
(Master thesis, 2018-11-20)Fish farming has become one of the most important industries in Norway. To handle further growth, both in sea- and land-based facilities, challenges should be dealt with in a sustainable manner. Among these challenges are ... -
r3Cseq: an R/Bioconductor package for the discovery of long-range genomic interactions from chromosome conformation capture and next-generation sequencing data
(Peer reviewed; Journal article, 2013)The coupling of chromosome conformation capture (3C) with next-generation sequencing technologies enables the high-throughput detection of longrange genomic interactions, via the generation of ligation products between DNA ... -
Radiometrically determined dates and sedimentation rates for recent sediments in nine North African wetland lakes (the CASSARINA Project)
(Peer reviewed; Journal article, 2001)Sediment cores were collected from nine wetland lakes in Morocco, Tunisia and Egypt for the CASSARINA project investigating environmental change in Northern African wetlands. The cores were dated radiometrically by using ... -
Rainbow trout Oncorhynchus mykiss skin responses to salmon louse Lepeophtheirus salmonis: From copepodid to adult stage
(Journal article; Peer reviewed, 2020)The marine crustacean Lepeophtheirus salmonis (salmon louse) is a common ectoparasite of wild and farmed salmonids. The parasite has a complex ontogeny comprising eight instars. The planktonic copepodid stage settles on ... -
Rainforest and cloud forest Scolytodes (Curculionidae, Scolytinae, Hexacolini) from the ALAS inventory in Costa Rica: new species, new synonymy, new records
(Peer reviewed; Journal article, 2019-07-11)Quantitative collecting efforts over the last several decades in Costa Rica have resulted in many new species of insects. The Arthropods of La Selva projects included collecting from a typical lowland Neotropical forest ... -
Rainwater harvesting cisterns and local water management; A qualitative geographical / socio-anthropological case study and ethnographic description from the districts of Hajja, Mabyan and Shiris, Governorate of Hajja, Yemen
(Master thesis, 2006)The thesis provides a qualitative geographical/socio-anthropological case study and ethnographic description of rainwater harvesting cisterns and their role in local water management. The analysed data is presented in a ... -
Rapid and reliable cloning of PCR products
(Peer reviewed; Journal article, 1991-08-08) -
Rapid climate changes during the Lateglacial and the early Holocene as seen from plant community dynamics in the Polar Urals, Russia
(Journal article; Peer reviewed, 2021)A detailed, well-dated record of pollen and sedimentary ancient DNA (sedaDNA) for the period 15 000–9500 cal a bp describes changes at Lake Bolshoye Shchuchye in the Polar Ural Mountains, located far east of the classical ... -
Rapid high-resolution detection of colistin resistance in Gram-negative bacteria using flow cytometry: a comparison with broth microdilution, a commercial screening test and WGS
(Journal article; Peer reviewed, 2021)Background Even though both EUCAST and CLSI consider broth microdilution (BMD) as the reference method for antimicrobial susceptibility testing (AST) of colistin, the method exhibits potential flaws related to properties ... -
Rapid life‑history evolution in a wild Daphnia pulex population in response to novel size‑dependent predation
(Journal article; Peer reviewed, 2020)The effect of size-selective predation on prey communities and their traits is well documented, but the relative roles of genetic adaptation and phenotypic plasticity continue to be debated. We looked for evidence of genetic ...