Browsing Department of Biological Sciences by Title
Now showing items 1816-1835 of 2500
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Planctomycetes as a Source for Cytotoxic Activity Towards Cancer Cells
(Master thesis, 2021-06-01)Planctomycetes are a ubiquitous phylum in the bacterial domain. They are known to possess unique traits distinguishing them from other bacteria, such as the formation of rosette aggregates, the lack of FtsZ-protein used ... -
Planctomycetes as a Vital Constituent of the Microbial Communities Inhabiting Different Layers of the Meromictic Lake Sælenvannet (Norway)
(Journal article; Peer reviewed, 2020)Meromictic lakes are permanently stratified lakes that display steep gradients in salinity, oxygen and sulphur compounds tightly linked to bacterial community structure and diversity. Lake Sælenvannet is a meromictic lake ... -
Planctomycetes dominate biofilms on surfaces of the kelp Laminaria hyperborea
(Peer reviewed; Journal article, 2010)Background: Bacteria belonging to Planctomycetes display several unique morphological and genetic features and are found in a wide variety of habitats on earth. Their ecological roles in these habitats are still poorly ... -
The planetary biology of cytochrome P450 aromatases
(Peer reviewed; Journal article, 2004-08-17)Background: Joining a model for the molecular evolution of a protein family to the paleontological and geological records (geobiology), and then to the chemical structures of substrates, products, and protein folds, is ... -
Planktivorous fish and environmental change: using mechanistic modelling to explore the underpinnings and general validity of expected responses
(Doctoral thesis, 2020-03-13)The living conditions of marine and terrestrial organisms are currently changing at a rapid pace due to human activities. To predict how this will affect them, and hence to develop appropriate management and conservation ... -
Plant dispersal characteristics shape the relationship of diversity with area and isolation
(Journal article; Peer reviewed, 2022)Aim The relation of plant dispersal syndromes with insular species richness patters remains one of the challenges in island biogeography, especially as people have affected species distribution patterns. This study ... -
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 associated data from a warming experiment, a seabird colony, and along elevation in Svalbard
(Journal article; Peer reviewed, 2023)The Arctic is warming at a rate four times the global average, while also being exposed to other global environmental changes, resulting in widespread vegetation and ecosystem change. Integrating functional trait-based ... -
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 Degrading Potential of Arctic Deep-Sea Hydrothermal Microbiomes
(Master thesis, 2023-05-16) -
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 ...