Blar i Department of Biological Sciences på tittel
Viser treff 2115-2134 av 2216
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Two homologous neutrophil serine proteases bind to POPC vesicles with different affinities: When aromatic amino acids matter
(Peer reviewed; Journal article, 2014-12)Neutrophil serine proteases Proteinase 3 (PR3) and human neutrophil elastase (HNE) are homologous antibiotic serine proteases of the polymorphonuclear neutrophils. Despite sharing a 56% sequence identity they have been ... -
Two hundred years of zooplankton vertical migration research
(Journal article; Peer reviewed, 2021)Vertical migration is a geographically and taxonomically widespread behaviour among zooplankton that spans across diel and seasonal timescales. The shorter-term diel vertical migration (DVM) has a periodicity of up to 1 ... -
Two new cryptic and sympatric species of the king crab parasite Briarosaccus (Cirripedia: Rhizocephala) in the North Pacific
(Peer reviewed; Journal article, 2016-01-05)Rhizocephalan barnacles have been reported to parasitize a wide range of king crab species (Lithodidae). So far all these parasites have been assigned to a single species, Briarosaccus callosus Boschma, 1930, which is ... -
The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation
(Peer reviewed; Journal article, 2016-08)Unlike in mammals, persistent postembryonic retinal growth is a characteristic feature of fish, which includes major remodeling events that affect all cell types including photoreceptors. Consequently, visual capabilities ... -
Ultrastructure of the anterior organ and posteriorfunnel-shaped canal of Gyrocotyle urna Wagener, 1852(Cestoda: Gyrocotylidea)
(Peer reviewed; Journal article, 2015-05-22)Using scanning and transmission electron microscopy, ultrastructure of the anterior organ and posterior funnel-shaped canal of Gyrocotyle urna Wagener, 1852 (Cestoda: Gyrocotylidea) from ratfish, Chimaera monstrosa ... -
An Unaccounted Fraction of Marine Biogenic CaCO3 Particles
(Peer reviewed; Journal article, 2012-10-23)Biogenic production and sedimentation of calcium carbonate in the ocean, referred to as the carbonate pump, has profound implications for the ocean carbon cycle, and relate both to global climate, ocean acidification and ... -
Unaccounted mortality in purse seine fisheries. Quantification and mitigation of slipping mortality
(Doctoral thesis, 2014-06-06)Purse seining is an efficient fishing method that is used to catch most of the world’s pelagic fish species. In some of these fisheries slipping is used to adjust catch size, increase catch value or to release illegal ... -
Uncertainty and ignored information in the analysis of bat ultrasound: Bayesian approximation to the rescue
(Journal article; Peer reviewed, 2022)Bat ultrasound analysis has been around for several decades and it is one of the most important tools in studies of bat ecology. Discrimination between species is based on intra-specific features of echolocation calls. ... -
Unclear associations between small pelagic fish and jellyfish in several major marine ecosystems
(Peer reviewed; Journal article, 2019-02-28)During the last 20 years, a series of studies has suggested trends of increasing jellyfish (Cnidaria and Ctenophora) biomass in several major ecosystems worldwide. Some of these systems have been heavily fished, causing a ... -
Understanding climate change impacts on biome and plant distributions in the Andes: Challenges and opportunities
(Journal article; Peer reviewed, 2022)Aim: Climate change is expected to impact mountain biodiversity by shifting species ranges and the biomes they shape. The extent and regional variation in these impacts are still poorly understood, particularly in the ... -
Understanding the occurrence and fate of microplastics in coastal Arctic ecosystems: The case of surface waters, sediments and walrus (Odobenus rosmarus)
(Journal article; Peer reviewed, 2021)The Arctic ecosystem receives contaminants transported through complex environmental pathways – such as atmospheric, riverine and oceanographic transport, as well as local infrastructure. A holistic approach is required ... -
Unfenced Borders Cause Differences in Vegetation and Fauna Between Protected and Unprotected Areas in a Tropical Savanna
(Peer reviewed; Journal article, 2019-09-04)Protected areas generally occur within a matrix of intensively human-modified landscapes. As a way to maintain the biodiversity in these areas, enclosure by fencing is often preferred. This strategy, however, is costly and ... -
Unique spicules may confound species differentiation: Taxonomy and biogeography of Melonanchora Carter, 1874 and two new related genera (Myxillidae: Poecilosclerida) from the Okhotsk Sea
(Journal article; Peer reviewed, 2021)Sponges are amongst the most difficult benthic taxa to properly identify, which has led to a prevalence of cryptic species in several sponge genera, especially in those with simple skeletons. This is particularly true for ... -
Unravelling the Complex Duplication History of Deuterostome Glycerol Transporters
(Journal article; Peer reviewed, 2020)Transmembrane glycerol transport is an ancient biophysical property that evolved in selected subfamilies of water channel (aquaporin) proteins. Here, we conducted broad level genome (>550) and transcriptome (>300) analyses ... -
Unravelling the complexity of plant community responses to climate change
(Doctoral thesis, 2023-05-26)Global oppvarming fører til at arter beveger seg høyere opp i fjellet og resulterer i en omfordeling av artene og en termofilisering av artssamfunn, det vil si atantall termofile arter øker mens antall kulde-tilpassede ... -
Unravelling the complexity of salt marsh ‘Fucuscottonii’ forms (Phaeophyceae, Fucales)
(Peer reviewed; Journal article, 2017)Genetic affiliation, nuclear DNA content, and gamete functioning were examined in small salt marsh Fucus from three localities in western Ireland. Individuals with small and dioecious receptacles were found at all localities, ... -
Unrestrained ESCRT-III drives micronuclear catastrophe and chromosome fragmentation
(Journal article; Peer reviewed, 2020)The ESCRT-III membrane fission machinery maintains the integrity of the nuclear envelope. Although primary nuclei resealing takes minutes, micronuclear envelope ruptures seem to be irreversible. Instead, micronuclear ... -
Upward shift in elevational plant species ranges in Sikkilsdalen, Central Norway
(Journal article, 2011-11-04)Phytosociological studies are an important tool to detect temporal vegetation changes in response to global climate change. In this study, we present the results of a resurvey of a plot-based phytosociological study from ... -
Use of algae technology for production of biohydrogen from green microalgae: Possibilities for a practical sustainable process and diversity at both species selection, culturing and gene transcript levels
(Doctoral thesis, 2011-01-28)Algae technology represents an extensive research field which has developed rapidly over the last decades. The research activities extend from algae cultivation including CO2 capture, production of commercial products such ... -
The use of photo and video as surveying tools on sessile organisms in shallow soft-bottom habitats - Photoframe and videosleigh method
(Master thesis, 2018-04-18)The Institute of Marine Research (IMR) wants to start a systematic survey of shallow, soft-bottom habitats. The IMR wants to implement two new methods using photo and video, the photoframe and the videosleigh method. Where ...