Blar i Institutt for biologi på tittel
Viser treff 2415-2434 av 2524
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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 ... -
Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus)
(Peer reviewed; Journal article, 2023)The commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, ... -
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar)
(Journal article; Peer reviewed, 2018)Aiming to explore ultrasound technology as a noninvasive method for maturation monitoring, we compared ultrasound observations and measurements in female Atlantic salmon (Salmo salar) during the last year before ovulation ... -
Ultrasound as a noninvasive tool for monitoring reproductive physiology in male Atlantic salmon (Salmo salar)
(Journal article; Peer reviewed, 2019)We examined the potential for ultrasound as a noninvasive tool for maturation monitoring in Atlantic salmon (Salmo salar) males. Ultrasound examination and measurements were compared to common practices for maturation ... -
Ultrastructures and cellular content of Phaeodactylum tricornutum studied by microscopy and flow cytometry
(Master thesis, 2023)Kiselalger er eukaryote fotosyntetiske mikroorganismer med økologisk betydning siden de er viktige primærprodusenter i den marine næringskjeden og fordi de bidrar til vesentlige geokjemiske sykluser. De har et unikt ... -
Uncovering the Impacts of Fencing in the Mara: An assessment of vegetation and bare soil using remote sensing and stakeholder participation
(Master thesis, 2019)Studier av arealbruk- og arealdekkeendringer benytter seg ofte av fjernregistrering via satelitter for overvåkning- og forvaltning av økosystemer, bevaringstiltak, samt kvantifisering av arealbruksendringer. Fjernregistrering ... -
Under the sea: How can we use heart rate and accelerometers to remotely assess fish welfare in salmon aquaculture?
(Peer reviewed; Journal article, 2023)Recent advances in bio-sensing technologies open for new possibilities to monitor and safeguard the welfare of fishes in aquaculture. Yet before taken into practice, the applicability of all novel biosensors must be ... -
Understanding Organisms Using Ecological Observatory Networks
(Peer reviewed; Journal article, 2023)Human activities are rapidly changing ecosystems around the world. These changes have widespread implications for the preservation of biodiversity, agricultural productivity, prevalence of zoonotic diseases, and sociopolitical ... -
Understanding spatial and interspecific processes affecting population dynamics in a marine ecosystem.
(Doctoral theses at NTNU;2022:11, Doctoral thesis, 2022)The dynamics of wild populations are affected by density dependent and density independent processes that vary across multiple temporal and spatial scales. Despite this high complexity, populations often show some degree ... -
Understanding species interactions in the tropics: dynamics within and between trophic levels
(Doctoral theses at NTNU;2019:327, Doctoral thesis, 2019)Knowledge on how and why species interact with each other can provide invaluable insight into understanding the many-fold effects that the anthropogenic pressures have on biodiversity and ecosystem functioning. Multiple ... -
Understanding the Ecology of Three Mixed Northern Hepatic Mat Species at Regional Scale through Species Distribution Modelling, and Local Scale through Growth Measurements and Micro-Climatic Assessment
(Master thesis, 2015)Good knowledge of a species' distribution and ecology is important for a successful management. The distribution of species is determined by many factors, among others climatic and topographic factors determining their ... -
Underwater Hyperspectral Imaging as a Tool for Benthic Habitat Mapping
(Doctoral theses at NTNU;2021:271, Doctoral thesis, 2021)Since the 1950s, continuous technological advances have gradually improved our ability to map the seafloor and its associated benthic habitats. Historically, seafloor mapping has largely been carried out acoustically, using ... -
Underwater hyperspectral imaging as an in situ taxonomic tool for deep-sea megafauna
(Journal article; Peer reviewed, 2018)Identification of benthic megafauna is commonly based on analysis of physical samples or imagery acquired by cameras mounted on underwater platforms. Physical collection of samples is difficult, particularly from the deep ... -
Underwater Hyperspectral Imaging of Arctic Macroalgal Habitats during the Polar Night Using a Novel Mini-ROV-UHI Portable System
(Peer reviewed; Journal article, 2022)We describe an Underwater Hyperspectral Imager (UHI) deployed on an instrument-carrying platform consisting of two interconnected mini-ROVs (Remotely Operated Vehicle) for the mapping and monitoring of Arctic macroalgal ... -
Underwater hyperspectral imaging: a new tool for marine archaeology
(Journal article; Peer reviewed, 2018)By applying an underwater hyperspectral imager (UHI) to a selection of archaeological artifacts, we have found spectral signatures that are representative of materials likely to be present at wreck sites. By successfully ... -
Underwater Imaging and the effect of Inherent Optical Properties on image quality
(Master thesis, 2014)- sammendrag ikke utfylt -
Ungulate population monitoring in an open tundra landscape:distance sampling versus total counts
(Journal article; Peer reviewed, 2017)Researchers and wildlife managers strive for low bias and high precision (i.e. high accuracy) when estimating animal population sizes. Distance sampling is currently one of the most widely used monitoring methods. However, ... -
Ungulates in a dynamic and increasingly human dominated landscape
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:28, Doctoral thesis, 2013)