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Now showing items 701-758 of 758
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The majority of Aloe species are threatened by anthropogenic activities, trade, and the effects of climate change, but little is known on seed biology and appropriate conservation measures. Hence, understanding the germination ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Resolution of relationships at lower taxonomic levels is crucial for answering many evolutionary questions, and as such, sufficiently varied species representation is vital. This latter goal is not always achievable with ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract
Taxonomists have proposed numerous hybrid species in plants, but to gain a better understanding of the role that hybridization may play in plant diversification, such taxonomic hypotheses must be tested ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
Abstract
We report on the occurrence of a new high-pressure Ca-Al-silicate in localized shock melt pockets found in the feldspatic lunar meteorite Oued Awlitis 001 and discuss the implications of our discovery. ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Background and objectives: The roots of Centaurea behen L., (Asteraceae) known as Radix Behen Albi are used as an aphrodisiac, anti-lithiasis and general tonic. It is available as dried or powdered roots in the herbal ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Ginseng traditional medicines and food supplements are the globally top selling herbal products. Panax ginseng , Panax quinquefolius and Panax notoginseng are the main commercial ginseng species in herbal medicine. Prices ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Bryozoans offer one of the few systems in which competitive interactions for living space can be studied in the fossil record. Here, we describe the outcome of competitive overgrowths in a 3‐million‐year‐old bryozoan ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Background: The genus Aloe has long been known for its use in healthcare and cosmetics. In Tanzania, overexploitation is threatening some Aloe species with extinction and yet, little has been documented on the abundance ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Ethnopharmalogical relevance
In Africa, traditional medicine is important for local healthcare and plants used for these purposes are commonly traded. Identifying medicinal plants sold on markets is challenging, as leaves, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The Ordovician was a time of drastic biological and geological change. Previous work has suggested that there was a dramatic increase in global diversity during this time, but also has indicated that regional dynamics and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Traditional crop varieties are an important source of genetic diversity for crop adaptation and modern breeding. Landraces of Asian (Oryza sativa) and African (Oryza glaberrima) rice have been well studied on the continents ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The endangered Spitsbergen stock of bowhead whales (Balaena mysticetus) has once been large with up to estimated 100,000 individuals. Genetic diversity of the extant Spitsbergen stock is unknown. We present 10 complete ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Crop wild relatives (CWR) can provide one solution to future challenges on food security, sustainable agriculture and adaptation to climate change. Diversity found in CWR can be essential for adapting crops to these new ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The history of Haplochorema K.Schum. (Zingiberaceae) is reviewed, its morphology is compared to Boesenbergia Kuntze and the molecular phylogenetic position is shown in relation to other Zingiberaceae. Based on a comparative ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
We present a new phylogeny of the spider family Araneidae based on five genes (28S, 18S, COI, H3 and 16S) for 158 taxa, identified and mainly sequenced by us. This includes 25 outgroups and 133 araneid ingroups representing ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Aim: Understanding the evolution of the latitudinal diversity gradient (i.e. increase in species diversity towards the tropics) is a prominent issue in ecology and biogeography. Disentangling the relative contributions of ...
(Doctoral thesis / Doktoravhandling, 2020)
Biologists typically distinguish species by how they look. However, with the development of DNA-based techniques to identify species, they found that genetically-different species may look remarkably similar. Biologists ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Aim: Distribution modelling is a useful approach to obtain knowledge about the spatial distribution of biodiversity, required for, for example, red-list assessments. While distribution modelling methods have been applied ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
Postcopulatory sexual selection may promote evolutionary diversification in sperm form, but the contribution of between‐species divergence in sperm morphology to the origin of reproductive isolation and speciation remains ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Bryozoans are a moderately diverse, mostly marine phylum with a fossil record extending to the Early Ordovician. Compared to other phyla, little is known about their phylogenetic relationships at both lower and higher ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The great auk was once abundant and distributed across the North Atlantic. It is now extinct, having been heavily exploited for its eggs, meat, and feathers. We investigated the impact of human hunting on its demise by ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
Positive selection acting on Toll‐like receptors (TLRs) has been recently investigated to reveal evolutionary mechanisms of host–pathogen molecular co‐adaptation. Much of this research, however, has focused mainly on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Background
Female promiscuity is highly variable among birds, and particularly among songbirds. Comparative work has identified several patterns of covariation with social, sexual, ecological and life history ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The Norwegian river Suldalslågen, known for its population of large‐sized Atlantic salmon (Salmo salar ), has been regulated for hydropower in 1966–1967 and in 1980. The initial regulation increased winter flows and reduced ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
High concentrations of mercury, possibly connected with widespread volcanism of the Siberian Traps, have previously been associated with the Smithian/Spathian (Early Triassic) boundary (SSB) in the Sverdrup Basin, Tethyan ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
Interspecific competition is thought to play a key role in determining the coexistence of closely related species within adaptive radiations. Competition for ecological resources can lead to different outcomes from character ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Thermal melanism theory states that dark-colored ectotherm organisms are at an advantage at low temperature due to increased warming. This theory is generally supported for ectotherm animals, however, the function of colors ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
Phylogenetic relationships within the important ichthyosaur family Ophthalmosauridae are not well established, and more specimens and characters, especially from the postcranial skeleton, are needed. Three ophthalmosaurid ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
Sperm swimming performance, including swimming speed and the proportion of motile cells, may strongly affect fertilization success. However, little is known about how methodological factors affect in vitro measurement of ...
(Doctoral thesis / Doktoravhandling, 2020)
This thesis focuses on the fungus gnat genus Allodia in the dipteran family Mycetophilidae. Allodia has historically gone through several systematic changes, with additions and exclusions of taxa, and the diversity and ...
The MIAmaxent R package: Variable transformation and model selection for species distribution models
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The widely used “Maxent” software for modeling species distributions from presence‐only data (Phillips et al., Ecological Modelling, 190, 2006, 231) tends to produce models with high‐predictive performance but low‐ecological ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
The genetic relationship between a granite pluton and adjacent complex of rare-metal pegmatite-aplite-banded sheets (Megiliggar Sheet Complex - MSC) has been studied at the border of the Tregonning topaz granite at Megiliggar ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
DNA-based snapshots of ancient vegetation have shown that the composition of high-latitude plant communities changed considerably during the late Quaternary. However, parallel changes in biotic interactions remain largely ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
The island-like distribution of subalpine habitats across mountain ranges can trigger the parallel evolution of locally adapted ecotypes. Such naturally replicated scenarios allow testing hypotheses on how elevational ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
BioDATA (Biodiversity Data for Internationalisation in Higher Education) is an international project to develop and deliver biodiversity data training for undergraduate and postgraduate students from Armenia, Belarus, ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2019)
Cryptic species are detected at an ever‐increasing rate, mainly due to the application of molecular data. While the impact of this hidden diversity on macro‐ecology and conversation biology is widely recognized, its ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
In a rapidly changing world, it is important to understand how urban environments impact wildlife. For example, supplementary feeding of birds, though well‐intended, might have unexpected negative effects on the health of ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
Sperm morphology varies enormously across the animal kingdom. Whilst knowledge of the factors that drive the evolution of interspecific variation in sperm morphology is accumulating, we currently have little understanding ...
(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, 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, 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, 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 ...
(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)
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)
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 / 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, 2024)
(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 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 / 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, 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 ...
(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, 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, 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, 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 ...