English
norskBlar i tittel Artikler, rapporter og annet (Universitetsmuseet)
Viser treff 109-128 av 377
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Gammarid amphipods (Crustacea) in Norway, with a key to the species
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-28)Thirteen species in the amphipod family Gammaridae have been reported from Norway. This paper gives a survey of the distribution and habitat of all 13 species of the family Gammaridae occurring or expected to occur in Norwegian waters: both marine, brackish and fresh, including Svalbard, in addition to four species found in close neighbouring waters. It also provides a short history of the study of ... -
Gamnes, Sør-Varanger k. Forvaltningsutgravning av en lokalitet fra eldre steinalder, id. 158956 og en gammetuft id. 158949
(Research report; Forskningsrapport, 2017)I løpet av 5 uker i august-september 2015 ble det undersøkt en registrert gammetuft, id.158949 og en åpen steinalderboplass,id.158956 på Gamnes i Sør-Varanger. Gammetufta viste seg å være et ishus/laksegamme fra nyere tid. Steinalderboplassen er en åpen sadellokalitet med aktivitetsområder og materiale som knyttes til første del av eldre steinalder. Dateringer fra lokaliteten vitner om en bruk også ... -
The genetic basis and enigmatic origin of melanic polymorphism in the pomarine skua (Stercorarius pomarinus)
(Journal article; Tidsskriftartikkel, 2017-12-06)A key outstanding issue in adaptive evolution is the relationship between the genetics of intraspecific polymorphism and interspecific evolution. Here, we show that the pale/dark ventral plumage polymorphism that occurs in both the pomarine skua (Stercorarius pomarinus) and Arctic skua (S. parasiticus) is the result of convergent evolution at the same locus (MC1R), involving some of the same amino ... -
A genetic fingerprint of Amphipoda from Icelandic waters – the baseline for further biodiversity and biogeography studies
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-23)Amphipods constitute an abundant part of Icelandic deep-sea zoobenthos yet knowledge of the diversity of this fauna, particularly at the molecular level, is scarce. The present work aims to use molecular methods to investigate genetic variation of the Amphipoda sampled during two IceAGE collecting expeditions. The mitochondrial cytochrome oxidase subunit 1 (COI) of 167 individuals originally assigned ... -
Genetically Engineered Virus Vaccine Vectors: Environmental Risk Management Challenges
(Journal article; Tidsskriftartikkel; Peer reviewed, 2011) -
Genomic Evidence of Widespread Admixture from Polar Bears into Brown Bears during the Last Ice Age
(Journal article; Tidsskriftartikkel, 2018-02-20)Recent genomic analyses have provided substantial evidence for past periods of gene flow from polar bears (<i>Ursus maritimus</i>) into Alaskan brown bears (<i>Ursus arctos</i>), with some analyses suggesting a link between climate change and genomic introgression. However, because it has mainly been possible to sample bears from the present day, the timing, frequency, and evolutionary significance ... -
Genotyping-in-Thousands by sequencing panel development and application for high-resolution monitoring of introgressive hybridization within sockeye salmon
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-02)Stocking programs have been widely implemented to re-establish extirpated fsh species to their historical ranges; when employed in species with complex life histories, such management activities should include careful consideration of resulting hybridization dynamics with resident stocks and corresponding outcomes on recovery initiatives. Genetic monitoring can be instrumental for quantifying ... -
Geographic mode of speciation in a mountain specialist avian family endemic to the Palearctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013)Mountains host greater avian diversity than lowlands at the same latitude due to their greater diversity of habitats stratified along an elevation gradient. Here we test whether this greater ecological heterogeneity promotes sympatric speciation. We selected accentors (Prunellidae), an avian family associated with mountains of the Palearctic, as a model system. Accentors differ in their habitat/elevation ... -
Geometric morphometrics of macro- and meiofaunal priapulid pharyngeal teeth provides a proxy for studying Cambrian “tooth taxa”
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-12)Priapulids are marine, benthic ecdysozoan worms that feed using a distinctive toothed pharynx. While only a handful of lineages have survived to the present day, the Cambrian priapulid stem group left behind a rich record of articulated body fossils and characteristic trace fossils in the form of burrows. Recently, the fossil record of isolated priapulid cuticular elements including pharyngeal teeth ... -
Germinating seeds or bulbils in 87 of 113 tested Arctic species indicate potential for ex situ seed bank storage
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013)Arctic plant species are expected to lose range due to climate change. One approach to preserve the genetic and species diversity for the future is to store propagules in seed vaults. However, germinability of seeds is assumed to be low for Arctic species. We evaluated ex situ storage potential of 113 of the 161 native angiosperms of Svalbard by studying seed ripening and germination. Seeds or bulbils ... -
Giant invasive Heracleum persicum: Friend or foe of plant diversity?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-30)The impact of invasion on diversity varies widely and remains elusive. Despite the con- siderable attempts to understand mechanisms of biological invasion, it is largely un- known whether some communities’ characteristics promote biological invasion, or whether some inherent characteristics of invaders enable them to ... -
Gibbosporina cyanea (Pannariaceae), a new bipartite cyanolichen from Sri Lanka with comparisons to related palaeotropical cyanogenera.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-30)Gibbosporina cyanea is described here as new to science, based on its holotype collected in Sri Lanka in the 1860s. The species is a bipartite cyanolichen in contrast to all other known Gibbosporina species, which are tripartites. The species appears to have evolved through cephalodia emancipation followed by divergence. Phyllidia indicate a cephalodiate evolutionary origin with a continued function ... -
Global phenological insensitivity to shifting ocean temperatures among seabirds
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-02)Reproductive timing in many taxa plays a key role in determining breeding productivity, and is often sensitive to climatic conditions. Current climate change may alter the timing of breeding at different rates across trophic levels, potentially resulting in temporal mismatch between the resource requirements of predators and their prey. This is of particular concern for higher-trophic-level organisms, ... -
Gravrøys med spor etter gravlegging i eldre og yngre jernalder. Arkeologisk undersøkelse på Vestnes på Bjarkøy, Harstad k.
(Research report; Forskningsrapport, 2016-05-30)I 2012 ble det foretatt en sikringsundersøkelse i en gravrøys som var sterkt skadet på Vestnes på Bjarkøy. Omtrent halve gravrøysa var bevart. Røysa har opprinnelig hatt en diameter på rundt 8 meter, og var rundt 80 cm høy. Det ble dokumentert et brannlag bestående av trekull og brente bein i bunnen av røysa, som ble datert til eldre førromersk jernalder. Noe høyere i røysa ble det funnet ... -
Grazing by sheep Ovis aries reduces island populations of water voles Arvicola amphibius
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014) -
Grensestasjon nord, Sør-Varanger kommune. Konsekvensutredning, deltema naturmiljø
(Research report; Forskningsrapport, 2013-02)Multiconsult er engasjert av Forsvarsbygg til å gjennomføre en konsekvensutredning i forbin-delse med planene om å bygge en ny grensestasjon sør for Ulveskardet mellom Storskog og Jarfjordbotn i Sør-Varanger kommune. Norsk institutt for naturforskning (NINA) fikk som under-leverandør til Multiconsult i oppgave å vurdere konsekvensene av dette tiltaket på naturmiljøet (fauna og vegetasjon). Området ... -
Has climate change resulted in a mismatch between the spring arrival of the Common Cuckoo Cuculus canorus and its hosts in North Norway?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)Analysis of spring arrival dates in North Norway showed advanced arrival of the Common Cuckoo Cuculus canorus but not of four of its most frequently used hosts. No evidence was found of a climate-driven mismatch that might contribute to the decline in the Norwegian Cuckoo population. -
Helmer Hanssens reiser i isbaksen. Med Roald Amundsen og polene som omdreiningspunkt
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014) -
Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-28)Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, ... -
Heroic Stories or Indigenous Perspectives? Polar Expedition Photographs in Norwegian Museum Exhibitions
(Chapter; Bokkapittel, 2014-10)
