Browsing Institutt for biologi by Title
Now showing items 1795-1814 of 2519
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The population genomic legacy of the second plague pandemic
(Peer reviewed; Journal article, 2022)Human populations have been shaped by catastrophes that may have left long-lasting signatures in their genomes. One notable example is the second plague pandemic that entered Europe in ca. 1,347 CE and repeatedly returned ... -
Population regulation in the tadpole shrimp Lepidurus arcticus
(Master thesis, 2012)A metapopulation consists of several subpopulations that show limited degree of internal regulation, and are not viable alone in the long term. Instead, each subpopulation is sustained over time by migration and re-colonization ... -
Population responses to harvesting in fluctuating environments
(Peer reviewed; Journal article, 2021)Achieving sustainable harvesting of natural populations depends on our ability to predict population responses to the combined effects of harvesting and environmental fluctuations while accounting for other internal and ... -
Population trend of Periphylla periphylla in inner Trondheimsfjord
(Master thesis, 2012)Periphylla periphylla (Scyphozoa, Coronatae) is a deep sea jellyfish first described by Péron & Lesueur in 1809. It is distributed in all of the world s oceans except for the Arctic. P. periphylla avoids light and is well ... -
Portable Catamaran Drone - an uncrewed sampling vehicle for micro-plastics and aquaculture research
(Chapter, 2022)In this paper, we present a Portable Catamaran Drone (PCD) - an Uncrewed Surface Vehicle (USV) that may significantly improve the scalability of surface water particle sampling using a plankton net. We preset vehicle design ... -
Possibility for strong northern hemisphere high-latitude cooling under negative emissions
(Peer reviewed; Journal article, 2022)It is well established that a collapse or strong reduction of the Atlantic meridional overturning circulation (AMOC) would substantially cool the northern high latitudes. Here we show that there is a possibility that such ... -
Possible Anthropogenic Sources of Toxic Elements in Snow Bunting Nestlings (Plectrophenax nivalis) in Adventdalen, Svalbard.
(Master thesis, 2017)The Arctic environment is exposed to natural and anthropogenic contamination as a result of local, regional and global pollution. Contaminants accumulating in the Arctic may influence both biotic and abiotic factors. ... -
Possible Effects of Persistent Organic Pollutants on Steroid Hormone Homeostasis in House Sparrows (Passer domesticus) from Helgeland, Norway
(Master thesis, 2014)Over the last decades, declines have occurred in the range and abundance of several passerines and farmland bird species and even though several possible causes have been suggested, the exposure to environmental contaminants ... -
Post-copulatory opportunities for sperm competition and cryptic female choice provide no offspring fitness benefits in externally fertilizing salmon
(Journal article; Peer reviewed, 2016)There is increasing evidence that females can somehow improve their offspring fitness by mating with multiple males, but we understand little about the exact stage(s) at which such benefits are gained. Here, we measure ... -
Potensialet for utvidet kontroll av vannkvalitet og fiskevelferdi i RAS ved bruk av maskinlæring
(Bachelor thesis, 2023)Innenfor landbasert lakseoppdrett benyttes resirkulerende akvakultursystemer for å gjenbruke driftsvannet flere ganger. Fiskens metabolisme og fôring produserer avfallsstoffer som kan forårsake redusert vannkvalitet i ... -
Potential of the polychaete Hediste diversicolor fed on aquaculture and biogas side streams as an aquaculture food source
(Journal article; Peer reviewed, 2019)We evaluated the potential of the marine bristleworm Hediste diversicolor (Polychaeta) to recycle side streams from aquaculture and biogas production. Polychaetes were fed along a gradient from pure aquaculture sludge (SS) ... -
Potentiation of ecological factors on the disruption of thyroid hormones by organo-halogenated contaminants in female polar bears (Ursus maritimus) from the Barents Sea.
(Journal article; Peer reviewed, 2017)As apex predators, polar bears (Ursus maritimus) are among the most heavily polluted organisms in the Arctic. In addition to this anthropogenic stressor, climate warming has been shown to negatively affect their body ... -
Pre- and post-construction studies of conflicts between birds and wind turbines in coastal Norway (BirdWind). Report on findings 2007-2010
(NINA rapport;620, Research report, 2011)The BirdWind project (2007-2010) is now concluded. This report summarises the main findings. Several scientific papers are in the process of preparation for publication in international peer re-view journals; this report ... -
Pre-adaptation or genetic shift after introduction in the invasive species Impatiens glandulifera?
(Journal article, 2016)Invasive exotic plants often grow fast, reproduce rapidly and display considerable phenotypic plasticity in their invasive range, which may be essential characteristics for successful invasion. However, it remains unclear ... -
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 ...