English
norskBlar i forfatter "Ekrem, Torbjørn"
Viser treff 1-7 av 7
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DNA Metabarcoding of Preservative Ethanol Reveals Changes in Invertebrate Community Composition Following Rotenone Treatment
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-01)The botanical compound rotenone is extensively used to eradicate populations and reduce the negative impacts of freshwater invasive animals. The method is controversial as non-target organisms often are negatively affected, but these effects are highly variable among taxa and may be difficult to monitor on species-level as many invertebrates are challenging or costly to identify using morphology. ... -
The Future of DNA Barcoding: Reflections from Early Career Researchers
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-09)Over the last two decades, the use of DNA barcodes has transformed our ability to identify and assess life on our planet. Both strengths and weaknesses of the method have been exemplified through thousands of peer-reviewed scientific articles. Given the novel sequencing approaches, currently capable of generating millions of reads at low cost, we reflect on the questions: What will the future bring ... -
Kunnskapsstatus for bruk av molekylære verktøy i kartlegging og overvåkning av biologisk mangfold i marine miljø
(Research report; Forskningsrapport, 2021-06-02)Denne rapporten er bestilt av Miljødirektoratet fra NorBOL (Norwegian Barcode of Life), et nasjonalt nettverk av forskningsinstitusjoner som koordineres av NTNU Vitenskapsmuseet. Universitetsmuseet i Bergen har hatt prosjektledelsen. Rapporten gir en oppsummering av dagens status på DNA-basert metodikk som verktøy i kartlegging og overvåking av biologisk mangfold i det marine miljø. Fokus har vært ... -
Molecular dietary analyses of western capercaillies (Tetrao urogallus) reveal a diverse diet
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-13)Conservation strategies centered around species habitat protection rely on species’ dietary information. One species at the focal point of conservation efforts is the herbivorous grouse, the western capercaillie (Tetrao urogallus), which is an indicator species for forest biodiversity conservation. Non-molecular means used to study their diet are time-consuming and at low taxonomic resolution. This ... -
Multi-marker DNA metabarcoding reflects tardigrade diversity in different habitats
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-03)Like meiofauna in general, tardigrades are often neglected in ecological and environmental surveys. Tardigrades occur in all parts of the world, from deep marine sediments to alpine environments, and are present in most ecosystems. They are therefore potentially good candidates for biomonitoring programs. However, sampling of these minute animals is both tedious and time-consuming, impeding their ... -
Tardigrade diversity and community composition across Norwegian boreal forests
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-26)Tardigrades are common in many terrestrial environments and habitats. Although little is known on their ecological preferences, previous studies found diversity and community composition significantly affected by various variables. This study associated tardigrade species’ records with climatic variables, forest type, and substrate categories exploring tardigrade diversity and species communities ... -
An urban Blitz with a twist: rapid biodiversity assessment using aquatic environmental DNA
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-24)As global biodiversity declines, there is an increasing need to create an educated and engaged society. Having people of all ages participate in measuring biodiversity where they live helps to create awareness. Recently, the use of environmental DNA (eDNA) for biodiversity surveys has gained momentum. Here, we explore whether sampling eDNA and sequencing it can be used as a means of rapidly surveying ...
