Browsing Department of Biological Sciences by Title
Now showing items 1647-1666 of 2225
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Plant dispersal in a changing climate. A seed-rain study along climate gradients in Southern Norway
(Master thesis, 2012-10-14)Seed dispersal is a key event in a plant's life, affecting the outcomes of many ecological processes ranging from species reproduction to population and community dynamics. It is influenced by various environmental and ... -
Plant macrofossil evidence for an early onset of the Holocene summer thermal maximum in northernmost Europe
(Peer reviewed; Journal article, 2015-04-10)Holocene summer temperature reconstructions from northern Europe based on sedimentary pollen records suggest an onset of peak summer warmth around 9,000 years ago. However, pollen-based temperature reconstructions are ... -
Plant traits and vegetation data from climate warming experiments along an 1100 m elevation gradient in Gongga Mountains, China
(Journal article; Peer reviewed, 2020)Functional trait data enhance climate change research by linking climate change, biodiversity response, and ecosystem functioning, and by enabling comparison between systems sharing few taxa. Across four sites along a ... -
Plant-pollinator interactions in the alpine: Landscape heterogeneity acts as a potential buffer against climate-change induced mismatch in the pollinator-generalist Ranunculus acris
(Master thesis, 2018-06-19)Phenology changes are a common response to global warming and the timing of phenological events is important for symbiotic interactions, such as pollination. If symbiotic species respond differently to global warming, this ... -
Plasma-derived exosome-like vesicles are enriched in lyso-phospholipids and pass the blood-brain barrier
(Journal article; Peer reviewed, 2020)Exosomes are vesicles involved in intercellular communication. Their membrane structure and core content is largely dependent on the cell of origin. Exosomes have been investigated both for their biological roles and their ... -
Plastic Population Effects and Conservative Leaf Traits in a Reciprocal Transplant Experiment Simulating Climate Warming in the Himalayas
(Peer reviewed; Journal article, 2018-07-30)Climate warming poses considerable challenges for alpine plant species, especially for competitively inferior ones with resource-conservative adaptations to cold climates. The Himalayas are warming at rates considerably ... -
Plastic response in Pinus spp., determining the temporal window of response and species-level variation of UV-B absorbing compounds to short-term variation in UV-B radiation
(Doctoral thesis, 2017-01-27)The total amount of ultraviolet radiation (UV-B wavelength = 280–315 nm) reaching the Earth’ surface has probably experienced large changes throughout Earth’s history. An untested hypothesis is that past variations in UV-B ... -
Plate reduction in freshwater threespine sticklebacks (Gasterosteus aculeatus) - an adaptation to a different buoyancy regime?
(Master thesis, 2009-03-13)One of the striking differentiations freshwater threespine sticklebacks (Gasterosteus aculeatus) with a marine origin experiences, is a reduction in the numbers of lateral plates. This has been demonstrated to be caused ... -
Ploidy elicits a whole-genome dosage effect: growth of triploid Atlantic salmon is linked to the genetic origin of the second maternal chromosome set
(Peer reviewed; Journal article, 2017-04-11)Background: The Atlantic salmon aquaculture industry is investigating the feasibility of using sterile triploids to mitigate genetic interactions with wild conspecifics, however, studies investigating diploid and triploid ... -
Polar bear adipose tissue-derived stem cells as an in vitro model for effects of environmental contaminants on adipogenesis
(Master thesis, 2015-09-03)The polar bear (Ursus maritimus) is currently listed as a vulnerable species by the IUCN red list, mainly due to the predicted decline in sea ice caused by global warming. Polar bears are dependent on sea ice for hunting ... -
Poleward distribution of mesopelagic fishes is constrained by seasonality in light
(Journal article; Peer reviewed, 2022)Aim: Mesopelagic fishes have a near-global distribution in the upper 1,000 m from tropical to sub-Arctic oceans across temperature regimes. Yet, their abundance decreases poleward and viable populations seem excluded from ... -
Pollen evidence of variations in Holocene climate and Southern Hemisphere Westerly Wind strength on sub- Antarctic South Georgia
(Journal article; Peer reviewed, 2021)The Southern Hemisphere Westerlies (SHW) play a major role in the global climate system. The winds drive ocean circulation and affect the Southern Oceans’ ability to take up atmospheric CO2. Recently, the SHW core belt has ... -
Pollen-based climate reconstruction techniques for late Quaternary studies
(Journal article; Peer reviewed, 2020)Fossil pollen records are well-established indicators of past vegetation changes. The prevalence of pollen across environmental settings including lakes, wetlands, and marine sediments, has made palynology one of the most ... -
Pollen-based quantitative reconstructions of Holocene regional vegetation cover (plant-functional types and land-cover types) in Europe suitable for climate modelling.
(Peer reviewed; Journal article, 2014-10-22)We present quantitative reconstructions of regional vegetation cover in north-western Europe, western Europe north of the Alps, and eastern Europe for five time windows in the Holocene [around 6k, 3k, 0.5k, 0.2k, and 0.05k ... -
Pollen-chemistry variations along elevation gradients and their implications for a proxy for UV-B radiation in the plant-fossil record
(Journal article; Peer reviewed, 2021)Research indicates that phenolic compounds (e.g. para-coumaric acid) found within pollen grains may be useful as a proxy to reconstruct the UV-B radiation received at the Earth's surface in the geological past. However, ... -
Pollination as an ecosystem service in Lofthus, Norway: A study on the distribution of wild and managed pollinators on apple crops and how they are affected by the surrounding landscape
(Master thesis, 2014-09-04)Pollination is an important ecosystem service that benefits human welfare by increasing the quantity and quality of fruit and seed set of many crops. The decline in bee abundance and diversity in recent years may result ... -
A polybasic motif in ErbB3-binding protein 1 (EBP1) has key functions in nucleolar localization and polyphosphoinositide interaction
(Peer reviewed; Journal article, 2016-07)Polyphosphoinositides (PPIns) are present in the nucleus where they participate in crucial nuclear processes, such as chromatin remodelling, transcription and mRNA processing. In a previous interactomics study, aimed to ... -
Polycyclic aromatic hydrocarbons modulate the activity of Atlantic cod (Gadus morhua) vitamin D receptor paralogs in vitro
(Journal article; Peer reviewed, 2021)Vitamin D receptor (VDR) mediates the biological function of the steroid hormone calcitriol, which is the metabolically active version of vitamin D. Calcitriol is important for a wide array of physiological functions, ... -
Polymastiidae (Demospongiae: Hadromerida) with ornamented exotyles: a review of morphological affinities and description of a new genus and three new species
(Peer reviewed; Journal article, 2016)All polymastiid sponges displaying ornamented exotyles are reviewed and their morphological affinities are reconsidered. The study embraces all known species of Proteleia, Sphaerotylus, Trachyteleia and Tylexocladus as ... -
Polyphosphoinositides in the nucleus: Roadmap of their effectors and mechanisms of interaction
(Peer reviewed; Journal article, 2019)Biomolecular interactions between proteins and polyphosphoinositides (PPIn) are essential in the regulation of the vast majority of cellular processes. Consequently, alteration of these interactions is implicated in the ...