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Now showing items 701-761 of 761
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The mainly Mediterranean genus Rhodalsine (Caryophyllaceae) is revised and a single species, R. geniculata, is recognized, distributed from the Canary Islands in the west to Somalia in the east. The history of the taxon, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Crossing experiments indicate that hybrid sterility barriers frequently have developed within diploid, circumpolar plant species of the genus Draba. To gain insight into the rapid evolution of postzygotic reproductive ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Herein we describe the new species, Psora taurensis, from two localities in the Taurus Mountains in Turkey at ca. 1000 m altitude. Investigations of anatomy, secondary chemistry and DNA sequences (ITS and mtSSU) of P. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
The luminescence spectra of a suite of natural sodium framework silicates including four different sodalite variants and tugtupite have been collected during X-ray irradiation as a function of temperature between 20 and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The present faunistic survey gives distributional records for 125 species of the family Braconidae (Hymenoptera) from several subfamilies (Agathidinae, Alysiinae, Aphidiinae, Brachistinae, Braconinae, Cheloninae, Doryctinae, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
The study of the collection of the family Encyrtidae at the Natural History Museum of Oslo continues. Eighteen species are reported for the first time from Norway in this revision, bringing the total number of Norwegian ...
(Doctoral thesis / Doktoravhandling, 2009)
As a starting point GIS (geographical information systems) seem intuitively to be a practical tool for biologists performing ecological research. GIS conveniently stores, explores, analyses and visualizes biological/ecol ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
The scattered eastern African high mountains harbor a renowned and highly endemic flora, but the taxonomy and phylogeographic history of many plant groups are still insufficiently known. The high-alpine populations of the ...
(Doctoral thesis / Doktoravhandling, 2014)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Climate change is expected to result in range shifts and habitat fragmentation for many species. In the Arctic, loss of sea ice will reduce barriers to dispersal or eliminate movement corridors, resulting in increased ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Almost all mammals communicate using sound, but few species produce complex songs. Two baleen whales sing complex songs that change annually, though only the humpback whale (Megaptera novaeangliae) has received much research ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
North America is currently home to a number of grey wolf (Canis lupus) and wolf-like canid populations, including the coyote (Canis latrans) and the taxonomically controversial red, Eastern timber and Great Lakes wolves. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Loss of Arctic sea ice has implications for the distribution and population structure of ice-dependent species such as polar bears Ursus maritimus. We used remotely sensed sea-ice concentration data for Baffin Bay, Canada, ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
Zoonotic infections transmitted from terrestrial and marine mammals to humans in European Arctic are of unknown significance, despite considerable potential for transmission due to local hunt and a rapidly changing ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
Expanding high‐elevation and high‐latitude forest has contrasting climate feedbacks through carbon sequestration (cooling) and reduced surface reflectance (warming), which are yet poorly quantified. Here, we present an ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
Shrub expansion in high latitudes is a widely observed response to climate change. Extensive evidence has shown that shrub expansion can lead to positive feedbacks to the regional climate. In this study we evaluate the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
A molecular phylogenetic analysis based on the DNA barcode marker (nrITS) of 12 specimens of Lecidea leucothallina revealed three monophyletic clades, two apotheciate and one sorediate. The sorediate clade is described as ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
After 142 years, Plutellapolaris Zeller, 1880 was rediscovered at Svalbard, Norway, in 2015. The locality and its vegetation are described. The specimen is the first female ever recorded, and its genitalia are illustrated. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
The long history of human land use have had a strong influence on ecosystems and landscapes in the boreal forest region of Northern Europe and created semi-natural habitats of high conservation value. In this study, we ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Despite the dramatic phenological responses of fungal fruiting to recent climate warming, it is unknown whether spatial distributions of fungi have changed and to what extent such changes are influenced by fungal traits, ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
Global change threatens invertebrate biodiversity and its central role in numerous ecosystem functions and services. Functional trait analyses have been advocated to uncover global mechanisms behind biodiversity responses ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Multiple drivers shape the spatial distribution of species, including dispersal capacity, niche incumbency, climate variability, orographic barriers, and plate tectonics. However, biogeographic patterns of fungi commonly ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
A range of published arguments against formalizing the Anthropocene as a geological time unit have variously suggested that it is a misleading term of non-stratigraphic origin and usage, is based on insignificant temporal ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
Eutectic melting curves in the system MgO–SiO2 have been experimentally determined at lower mantle pressures using laser-heated diamond anvil cell (LH-DAC) techniques. We investigated eutectic melting of bridgmanite plus ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Introduction
Herbal medicines play an important role globally in the health care sector and in industrialised countries they are often considered as an alternative to mono-substance medicines. Current quality and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
Several eukaryotic symbioses have shown to host a rich diversity of prokaryotes that interact with their hosts. Here, we study bacterial communities associated with ectomycorrhizal root systems of Bistorta vivipara compared ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Human population expansion and associated degradation of the habitat of many wildlife species cause loss of biodiversity and species extinctions. The small Simen Mountains National Park in Ethiopia is one of the last ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Hybridization is frequent in the large and ecologically significant genus Carex (Cyperaceae). In four important sections of the northern regions (Ceratocystis, Glareosae, Phacocystis and Vesicariae), the frequent occurrence ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Sets of presence records used to model species’ distributions typically consist of observations collected opportunistically rather than systematically. As a result, sampling probability is geographically uneven, which may ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
The Agardhfjellet Formation (Middle Jurassic to lowermost Cretaceous) of Svalbard (Norwegian Arctic) is well known for its abundant and unique marine reptile fauna, of ichthyosaurs and plesiosaurs. In an attempt to reconstruct ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
1. Species composition is a vital attribute of any ecosystem. Accordingly, ecological restoration often has the original, or “natural,” species composition as its target. However, we still lack adequate methods for predicting ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
This paper provides a theoretical understanding of sampling bias in presence-only data in the context of species distribution modelling. This understanding forms the basis for two integrated frameworks, one for detecting ...
(Journal article / Tidsskriftartikkel / SubmittedVersion; Peer reviewed, 2018)
Male fertilization success depends on investment in both pre- and postcopulatory sexually selected traits, and considerable attention has recently been paid to quantifying the strength and direction of covariance between ...
(Research report / Forskningsrapport / PublishedVersion, 2019)
Metodene for feltbasert kartlegging av naturtyper i Norge er i utvikling. Kartlegging baserer seg nå i hovedsak på bruk av digitale plattformer med tilrettelagt programvare. Siden lanseringen av Natur i Norge (NiN 2.0) i ...
(Doctoral thesis / Doktoravhandling, 2020)
All organisms need to fight pathogens to avoid infectious diseases. In vertebrates, two classes of polymorphic genes from the major histocompatibility complex (MHC) are crucial for triggering immune responses against ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
There is growing evidence that post-copulatory sexual selection, mediated by sperm competition, influences the evolution of sperm phenotypes. Evidence for pre-copulatory sexual selection effects on sperm traits, on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Recent multilocus studies of congeneric birds have shown a pattern of elevated interspecific divergence on the Z chromosome compared to the autosomes. In contrast, intraspecifically, birds exhibit less polymorphism on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
The genus Brevicellicium encompasses wood-inhabiting corticioid fungi characterized by isodiametric subhymenial hyphae, short basidia, and smooth, often subangular spores with a distinct apiculus. Eight new LSU nrDNA ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Cope's Rule describes increasing body size in evolutionary lineages through geological time. This pattern has been documented in unitary organisms but does it also apply to module size in colonial organisms? We address ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract
The Wolfsberg lithium deposit in Austria is one of the largest Li-Cs-Ta pegmatite resources in Europe. The deposit is part of the Austroalpine Unit Pegmatite Province in the Eastern Alps that formed during the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Roots of Gentiana purpurea are known to have an intense bitter taste due to its high content of secoiridoids. In folk medicine roots have commonly been prepared as water decoctions, soaked in ethanol, or boiled with milk, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Site‐occupancy modelling is widely used in ecology for understanding species distribution, habitat‐use and community changes but its application is still limited in paleoecology, where incomplete detection is also routine. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Abstract. The new mckelveyite group mineral bainbridgeite-(YCe), ideally Na2Ba2YCe(CO3)6 ⋅ 3H2O, was found at Mont Saint-Hilaire, Quebec, Canada. Bainbridgeite-(YCe) occurs as pseudotrigonal and pseudohexagonal hemimorphic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Background
The advancement of sequencing technologies results in the rapid release of hundreds of new genome assemblies a year providing unprecedented resources for the study of genome evolution. Within ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract The recent discovery of Rhabdopleura in Singapore and the chance collecting of fresh material from northern New Zealand (Three Kings Shelf) provided an opportunity to sequence the specimens with an aim to determine ...
(Doctoral thesis / Doktoravhandling / PublishedVersion, 2020)
A central objective of evolutionary biology is to understand how organisms adapt to novel environments, and to what degree this process follows repeatable patterns.
This thesis explores how three Arctic plant species ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Abstract
Adams and Collyer (2018) argue that contemporary multivariate (Gaussian) phylogenetic comparative methods are prone to favouring more complex models of evolution and sometimes rotation invariance can be ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Traditional Chinese Medicine (TCM) herbal products are increasingly used in Europe, but prevalent authentication methods have significant gaps in detection. In this study, three authentication methods were tested in a ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract On 25 August 2022, the Zoologica Scripta ‐ An International Journal of Systematic Zoology and the Norwegian Academy of Sciences and Letters arranged a symposium entitled ‘The role of systematics for understanding ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract
To understand how species evolve and adapt to changing environments, it is important to study gene flow and introgression due to their influence on speciation and radiation events. Here, we apply a novel ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Abstract. The new mckelveyite group mineral, alicewilsonite-(YLa), Na2Sr2YLa(CO3)6 ⋅ 3H2O, was found together with kamphaugite-(Y), paratooite-(Y), bastnäsite-(La), and decrespignyite-(Y) coating along fractures in dolomite ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Background
Ascetosporea (Endomyxa, Rhizaria) is a group of unicellular parasites infecting aquatic invertebrates. They are increasingly being recognized as widespread and important in marine environments, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract The rapid diversification and high species richness of flowering plants is regarded as ‘Darwin’s second abominable mystery’. Today the global spatiotemporal pattern of plant diversification remains elusive. Using ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Because DNA degrades over time, extracting DNA of sufficient quality for sequencing is presumed to be more difficult from older than younger herbarium specimens. Although massive parallel sequencing techniques have clear ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2024)
Heritable variation is a prerequisite for evolutionary change, but the relevance of genetic constraints on macroevolutionary timescales is debated. By using two datasets on fossil and contemporary taxa, we show that ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2024)
The evolution of phenotypic traits is usually studied on generational times or across species on million-year timescales. We bridge this conceptual gap by using high density sampling of a species lineage, Microporella ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2024)
Natromelansonite, Na3Zr[Si7AlO19]⋅4–5H2O, was found at the Poudrette (Demix) quarry, Mont Saint-Hilaire, Quebec, Canada in a highly altered pegmatite together with a clay mineral, steacyite, polylithionite and rhodochrosite. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract Little is known about when and how planktonic species arise and persist in the open ocean without apparent dispersal barriers. Pteropods are planktonic snails with thin shells susceptible to dissolution that are ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
Great Cormorants Phalacrocorax carbo are now regularly seen in inland watercourses in southeast Norway, after the P. c. sinensis subspecies first established breeding colonies in coastal south Norway in 1996. Although both ...