Browsing Institutt for biologi by Title
Now showing items 2430-2449 of 2558
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Tracing the footprints of Arctic pollution: Spatial variations in toxic and essential elements in Svalbard reindeer (Rangifer tarandus platyrhynchus) faeces
(Journal article; Peer reviewed, 2023)The Arctic is an accumulation zone of long-range transported pollution. In addition, local anthropogenic activities further contribute to regional pollution levels. The Svalbard reindeer (Rangifer tarandus platyrhynchus) ... -
Tracking jellyfish swarm origins using a combined oceanographic-genetic-citizen science approach
(Peer reviewed; Journal article, 2022)Biological invasions of jellyfish may critically affect ecosystems and ecosystem services, yet their complex life cycle makes tracking their origins and dispersal vectors a challenging task. Here we combine citizen science ... -
Tracking pan-continental trends in environmental contamination using sentinel raptors—what types of samples should we use?
(Journal article; Peer reviewed, 2016)Biomonitoring using birds of prey as sentinel species has been mooted as a way to evaluate the success of European Union directives that are designed to protect people and the environment across Europe from industrial ... -
Trait evolvability: effects of thermal plasticity and genetic correlations among traits
(Doctoral theses at NTNU;2018:377, Doctoral thesis, 2018)Summary of thesis: Trait evolvability: effects of thermal plasticity and genetic correlations among traits Climate change and increasing average temperatures are a big challenge for many populations of plants and ... -
Trans-Equatorial Migration Routes, Staging Sites and Wintering Areas of a High-Arctic Avian Predator: The Long-tailed Skua (Stercorarius longicaudus)
(Journal article; Peer reviewed, 2013)The Long-tailed Skua, a small (,300 g) Arctic-breeding predator and seabird, is a functionally very important component of the Arctic vertebrate communities in summer, but little is known about its migration and winter ... -
Transcriptional development of phospholipid and lipoprotein metabolism in different intestinal regions of Atlantic salmon (Salmo salar) fry
(Journal article; Peer reviewed, 2018)Background It has been suggested that the high phospholipid (PL) requirement in Atlantic salmon (Salmo salar) fry is due to insufficient intestinal de-novo synthesis causing low lipoprotein (LP) production and reduced ... -
Transcriptional profiling of reproductive development, lipid storage and molting throughout the last juvenile stage of the marine copepod Calanus finmarchicus
(Journal article; Peer reviewed, 2014)Introduction Calanus finmarchicus, a highly abundant copepod that is an important primary consumer in North Atlantic ecosystems, has a flexible life history in which copepods in the last juvenile developmental stage (fifth ... -
Transcriptional regulation of lipid metabolism when salmon fry switches from endogenous to exogenous feeding
(Journal article; Peer reviewed, 2018)The onset of first feeding is a critical period for Atlantic salmon (Salmo salar). The fish goes through a dramatic transition, from using the yolk sac as an energy and nutrient resource to rely on exogenous food. However, ... -
Transcriptional regulatory networks in Arabidopsis thaliana during single and combined stresses
(Journal article; Peer reviewed, 2016)Differentially evolved responses to various stress conditions in plants are controlled by complex regulatory circuits of transcriptional activators, and repressors, such as transcription factors (TFs). To understand the ... -
Transgene-free genome editing in marine algae by bacterial conjugation - comparison with biolistic CRISPR/Cas9 transformation
(Journal article; Peer reviewed, 2018)The CRISPR/Cas9 technology has opened the possibility for targeted genome editing in various organisms including diatom model organisms. One standard method for delivery of vectors to diatom cells is by biolistic particle ... -
Transgenerational effects of short-term exposure to acidification and hypoxia on early developmental traits of the mussel Mytilus edulis
(Journal article; Peer reviewed, 2019)Transgenerational effects of multiple stressors on marine organisms are emerging environmental themes. We thus experimentally tested for transgenerational effects of seawater acidification and hypoxia on the early development ... -
Tree recruitment in the Forest-tundra Ecotone: Limitation and facilitation processes in contrasting climatic Regions
(Master thesis, 2012)Aim: The aim of this study was to analyse how abiotic and biotic constraint and facilitation agents determine tree recruitment in the alpine zone in climatically different regions as well as across species; Birch, pine and ... -
Tree thinking cannot taken for granted: challenges for teaching phylogenetics
(Journal article; Peer reviewed, 2008)Tree thinking is an integral part of modern evolutionary biology, and a necessary precondition for phylogenetics and comparative analyses. Tree thinking has during the 20th century largely replaced group thinking, de ... -
Triploid Atlantic salmon in aquaculture - Consequences for fish health and welfare under farming conditions
(VKM Report;2023:22, Research report, 2023) -
Triploid Atlantic salmon × brown trout hybrids have similar seawater growth and welfare issues as triploid Atlantic salmon, but both were heavier at harvest than their diploid counterparts
(Peer reviewed; Journal article, 2022)Interspecific hybridisation may improve the farm performance of sterile triploid salmonids via heterosis (i.e. hybrid vigour). We assessed growth over the final 293 days in seawater, and harvest quality, in diploid and ... -
Trophic control of the Daphnia longispina/galeata complex in lakes containing the invasive European whitefish (Coregonus lavaretus)
(Master thesis, 2023)Miljøtilstanden i ferskvannsøkosystemer endrer seg raskt i en negativ retning. Hovedårsaken er menneskelig aktivitet, og spesielt bekymringsverdig er den pågående nedgangen i biodiversitet. Ferskvannsarter dør ut i økende ... -
Trophy Hunting Versus Ecotourism as a Conservation Model? Assessing the Impacts on Ungulate Behaviour and Demographics in the Ruaha-Rungwa Ecosystem, Central Tanzania
(Journal article, 2018)Trophy hunting may influence wildlife populations in many ways, but these effects have received little consideration in many of Africa’s protected areas. We assessed the effects of trophy hunting on group size, behaviour, ... -
TRY plant trait database – enhanced coverage and open access
(Journal article; Peer reviewed, 2019)Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem ... -
Twilight foraging enables European shags to survive the winter across their latitudinal range
(Peer reviewed; Journal article, 2021)Species breeding at high latitudes face a significant challenge of surviving the winter. Such conditions are particularly severe for diurnal marine endotherms such as seabirds. A critical question is therefore what behavioural ... -
Two-current choice flumes for testing avoidance and preference in aquatic animals
(Journal article; Peer reviewed, 2016)1. Aquatic chemical ecology is an important and growing field of research that involves understanding how organisms perceive and respond to chemical cues in their environment. Research assessing the preference or avoidance ...