Browsing Institutt for biologi by Title
Now showing items 1807-1826 of 2516
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Predation in the marine fossil record: Studies, data, recognition, environmental factors, and behavior
(Journal article; Peer reviewed, 2019)The fossil record is the primary source of data used to study predator-prey interactions in deep time and to evaluate key questions regarding the evolutionary and ecological importance of predation. Here, we review the ... -
Predation of Atlantic salmon across ontogenetic stages and impacts on populations
(Peer reviewed; Journal article, 2023)Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review ... -
Predation risk alters life history strategies in an oceanic copepod
(Peer reviewed; Journal article, 2020)The ubiquitous oceanic copepod Calanus finmarchicus is the major link between primary producers and important fish stocks in the North Atlantic Ocean and adjacent seas. Despite over a century of research on growth and ... -
Predator co-occurrence in alpine and Arctic tundra in relation to fluctuating prey
(Peer reviewed; Journal article, 2022)1. Large carnivores influence ecosystem dynamics in multiple ways, for example, by suppressing meso-carnivores and providing carrions for smaller scavengers. Loss of large carnivores is suggested to cause meso-carnivore ... -
Predator-Induced Selection on Phenotypes by Sparrowhawks (Accipiter nisus) in House sparrows (Passer domesticus)
(Master thesis, 2022)Predasjon kan påvirke fenotypisk og genotypisk distribuering av trekk i byttedyret, samt ha en innflytelse på demografisk struktur og variasjon i mortalitet ved tid og rom. Denne studien undersøker hvordan predasjon av ... -
Predicting fish community responses to environmental policy targets
(Journal article, 2021)The European Union adopted the Water Framework Directive (WFD) in the year 2000 to tackle the rapid degradation of freshwater systems. However, biological, hydromorphological, and physico-chemical water quality targets are ... -
Prenatal exposure to persistent organic pollutants in Northern Tanzania and their distribution between breast milk, maternal blood, placenta and cord blood
(Journal article; Peer reviewed, 2019)Human exposure to persistent organic pollutants (POPs) begins during pregnancy and may cause adverse health effects in the fetus or later in life. The present study aimed to assess prenatal POPs exposure to Tanzanian infants ... -
Present and Past‐Millennial Eutrophication in the Gulf of Gdańsk (Southern Baltic Sea)
(Peer reviewed; Journal article, 2019)Eutrophication is manifested by increased primary production leading to oxygen depletion in near‐bottom water and toxic cyanobacteria blooms. This is an important contemporary problem of the Baltic Sea and many other coastal ... -
Prevalence of antibodies against Brucella spp. in West Greenland polar bears (Ursus maritimus) and East Greenland muskoxen (Ovibos moschatus)
(Journal article; Peer reviewed, 2018)Zoonotic infections transmitted from terrestrial and marine mammals to humans in European Arctic are of unknown significance, despite considerable potential for transmission due to local hunt and a rapidly changing ... -
Prevalence of Chlamydia pecorum in Juvenile Koalas ( Phascolarctos cinereus ) and Evidence for Protection from Infection via Maternal Immunization
(Journal article; Peer reviewed, 2018)Chlamydia pecorum in koalas (Phascolarctos cinereus) is considered a sexually transmitted infection. Analysis of samples from koala joeys (<1 yr) suggested that mother-to-young direct transmission was also occurring. ... -
Prevalence of fin erosion, shortened operculum and lesions in farmed Atlantic Salmon (Salmo salar)
(Master thesis, 2014)The aim of the study was to study the ocurrence of fin erosion, opercular deformities and body lesions in a smolt Production cycle of Atlantic salmon (Salmo salar), in relation to environmental parameters and features. -
Prey predictability and preparation versus recovery breathing strategies in European shags Gulosus aristotelis (L.) diving in different habitats
(Peer reviewed; Journal article, 2023)A recent study on the diving behaviour of European shags (Gulosus aristotelis (L.)) foraging in kelp forests off rocky coasts of Norway suggests surface durations are related only to the duration of the preceding dive, and ... -
Principles and Methods of Counteracting Harmful Salmon–Arthropod Interactions in Salmon Farming: Addressing Possibilities, Limitations, and Future Options
(Peer reviewed; Journal article, 2021)The arthropod salmon louse (Lepeophtheirus salmonis) is a major threat to Atlantic salmon aquaculture and wild salmonids. Essentially like in monoculture, very high concentrations of susceptible hosts may result in high ... -
Prioritization of cell cycle regulated genes
(Master thesis, 2013)The cell cycle is an important biological process in which a set of events occurs in a sequential manner progressing to the cell division. Cell cycle is regulated by periodic fluctuations in the expression levels of several ... -
Proceedings of the International Conference on Biodiversity – Present State, Problems and Prospects of its Conservation, January 8-10, 2011 University of Chittgaong, Chittagong 4331, Bangladesh
(International Conference on Biodiversity : Proceedings, 1893-3572, Book, 2011) -
Processing of Gustatory Information by Protocerebral Neurons in the Moth Heliothis virescens
(Master thesis, 2012)Insects are guided to potential host plants by visual and olfactory signals. Upon arrival they encounter various taste stimuli, ultimately deciding whether the plant is a proper food or oviposition source. The detection ... -
Produced water components: uptake kinetics and effects on the metabolism of the Arctic copepod Calanus glacialis
(Master thesis, 2016)The oil exploration and search for new oil production fields is expanding further north and has reached the Arctic. Oil drilling activities release large amounts of produced water (PW) to the marine environment and sub-lethal ... -
Produced water from North Sea offshore oil platforms causes a suite of biological effects on developing lumpfish (Cyclopterus lumpus) eggs.
(Master thesis, 2020)This study investigated the impacts of several produced waters (PWs) from the North Sea on developing Cyclopterus lumpus larvae. Larvae were exposed for 96 hours early in development to 3 concentrations of 5 different PW ... -
Production and nutritional adaptation of the brine shrimpArtemia sp. as live food organism for larvae of marine cold water fish species
(Doctoral thesis, 2001)High nutritional value of Artemia sp. refers to high content of highly unsaturated fatty acids (n-3 HUFA) and in particular the content of DHA. In the enrichment experiments presented in this thesis new diets and one new ... -
Promoting bird conservation in wetland-associated landscapes: Factors influencing avian crop damage and farmers’ attitudes
(Peer reviewed; Journal article, 2022)Integrating agroecosystems as bird habitats are very important for long-term conservation planning because intensified agricultural land use has been a global threat to avifauna. To make agriculture compatible with ...