Browsing Institutt for biologi by Title
Now showing items 1982-2001 of 2519
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Seasonal Variations in Biofouling and Plankton Community Connected to a Large Scale Salmon Farm.
(Master thesis, 2011)Biofouling is the one of the main problems in marine finfish aquaculture. Biofouling occludes the nets and incurs major costs to fish farmers in the form of copper containing anti fouling paints used on the net surfaces, ... -
Seasonal Variations in Thyroid Disrupting Effects of Persistent Organic Pollutants in Polar Bears (Ursus maritimus) from Svalbard
(Master thesis, 2016)Several persistent organic pollutants (POPs) have the ability to interfere with the thyroid hormone (TH) system in arctic mammals. This endocrine system is crucial for adapting to a changing environment, and it is an ... -
Secondary forest regeneration benefits old-growth specialist bats in a fragmented tropical landscape
(Journal article; Peer reviewed, 2018)Tropical forest loss and fragmentation are due to increase in coming decades. Understanding how matrix dynamics, especially secondary forest regrowth, can lessen fragmentation impacts is key to understanding species ... -
Selecting habitat to survive: The impact of road density on survival in a large carnivore
(Journal article; Peer reviewed, 2013)Habitat selection studies generally assume that animals select habitat and food resources at multiple scales to maximise their fitness. However, animals sometimes prefer habitats of apparently low quality, especially when ... -
Selecting the right bird model in experimental studies on endocrine disrupting chemicals
(Journal article; Peer reviewed, 2015)Birds have been used as model species in ecotoxicological research for decades but have only recently been included in toxicity testing schemes. However, the avian fauna is very diverse. Given this diversity, the ecology, ... -
Selection and administration of probiotic bacteria to marine fish larvae
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:223, Doctoral thesis, 2006) -
Selection on high thermal tolerance alters tolerance to cold
(Master thesis, 2019)Klimaendringer vil føre til økning i vanntemperaturer og intensitet av hetebølger. Dette vil utfordre ektoderme fiskers indre fysiologi og populasjonsutbredelse, delvis avhengig av deres temperatur-toleranse. Et vanlig mål ... -
Selective Ingestion of Textile Microfibres by Calanus finmarchicus
(Master thesis, 2020)The present study investigated the ingestion and egestion dynamics of four white textile microfibres (ca. 60 µm) in the marine copepod Calanus finmarchicus. This study is the first to expose aquatic invertebrates to ... -
The Seminavis Robusta Genome Provides Insights Into the Evolutionary Adaptations of Benthic Diatoms
(Peer reviewed; Journal article, 2020)Benthic diatoms are the main primary producers in shallow freshwater and coastal environments, fulfilling important ecological functions such as nutrient cycling and sediment stabilization. However, little is known about ... -
Sensitivity Analysis of Effective Population Size to Demographic Parameters in House Sparrow Populations
(Master thesis, 2015)In population management, the effective population size, Ne, can be viewed in tandem with actual population size, N, as the main factors determining a population s long-term viability and sustainability. Ne is the number ... -
Sensitivity analysis of effective population size to demographic parameters in house sparrow populations
(Journal article, 2017)The ratio between the effective and the census population size, (math formula), is an important measure of the long-term viability and sustainability of a population. Understanding which demographic processes that affect ... -
Seroprevalence for Brucella spp. in Baltic ringed seals (Phoca hispida) and T East Greenland harp (Pagophilus groenlandicus) and hooded (Cystophora cristata) seals
(Journal article; Peer reviewed, 2018)Zoonotic infections transmitted from marine mammals to humans in the Baltic and European Arctic are of unknown significance, despite given considerable potential for transmission due to local hunt. Here we present results ... -
Seroprevalence of avian influenza in Baltic common eiders (Somateria mollissima) and pink-footed geese (Anser brachyrhynchus)
(Peer reviewed; Journal article, 2020)Influenza viruses are negative-sense single-stranded RNA viruses within the family of Orthomyxoviridae (Alexander, 2008). It holds Influenza A, B, C and D. Influenza A, B and C cause disease in humans, while only Influenza ... -
Servicescape of the Greater Serengeti-Mara Ecosystem: Visualizing the linkages between land use, biodiversity and the delivery of wildlife-related ecosystem services
(Journal article; Peer reviewed, 2019)Understanding how anthropogenic activities and management actions influence the delivery of ecosystem services is complicated by the interrelated nature of diverse factors. We present a Bayesian Belief Network to highlight ... -
Sex Allocation in Relation to Host Races in the Brood-Parasitic Common Cuckoo (Cuculus canorus)
(Journal article; Peer reviewed, 2012)Sex allocation theory and empirical evidence both suggest that natural selection should favour maternal control of offspring sex ratio in relation to their ability to invest in the offspring. Generalist parasites constitute ... -
Sex in murky waters: algal induced turbidity increases sexual selection in pipefish
(Journal article; Peer reviewed, 2017)Algal-induced turbidity has been shown to alter several important aspects of reproduction and sexual selection. However, while turbidity has been shown to negatively affect reproduction and sexually selected traits in some ... -
Sex roles and reproductive behaviour in gobies and guppies : a female perspective
(Doctoral thesis, 2003)This thesis focuses on reproductive dynamics, behaviour and selection from a female perspective. The aim was to explore variation in sex roles and potential for selection on females, as well as the selective forces working ... -
Sex roles and sexual selection: Lessons from a dynamic model system
(Journal article; Peer reviewed, 2018)Our understanding of sexual selection has greatly improved during the last decades. The focus is no longer solely on males, but also on how female competition and male mate choice shape ornamentation and other sexually ... -
Sex roles in egg recognition and egg polymorphism in avian brood parasitism
(Journal article, 2012)Avian brood parasites impose strong selection on their hosts leading to the evolution of antiparasite defenses like egg recognition and rejection. Discordance and template-based cognitive mechanisms may form the base for ...