Blar i NORCE vitenarkiv på forfatter "Hestetun, Jon Thomassen"
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Arctic Paleoceanography Cruise KH21-234 with R/V Kronprins Haakon
De Schepper, Stijn; Larsen, Aud; Blindheim, Dag Inge; Cordier, Tristan; Grant, Danielle; Hestetun, Jon Thomassen; Häkli, Katja; Lefevere, Simon Pierre; Liltved, Allegra; Monsen, Stig; Mugu, Sigrid; Ray, Jessica Louise; Steinsland, Kristine; Trofimova, Tamara; Weiner, Agnes (Research report, 2022)We set sail from Longyearbyen on 30.6.2021 to collect surface sediments, long sediment archives, water and plankton samples. The study area is located north of Svalbard, within the seasonal and permanent sea ice covered ... -
Benthic eDNA metabarcoding provides accurate assessments of impact from oil extraction, and ecological insights
Lanzén, Anders; Dahlgren, Thomas Gunnar; Bagi, Andrea; Hestetun, Jon Thomassen (Peer reviewed; Journal article, 2021)Apart from its contribution to climate change, offshore oil and gas extraction is also a potential threat to the diversity and function of marine ecosystems. Routine monitoring of the environmental status of affected areas ... -
Deep-Sea Carnivorous Sponges From the Mariana Islands
Hestetun, Jon Thomassen; Rapp, Hans Tore; Pomponi, Shirley (Peer reviewed; Journal article, 2019)Carnivorous sponges belonging to family Cladorhizidae (Porifera, Demospongiae, Poecilosclerida) are unique within phylum Porifera due to their ability to capture and envelop small prey. While other sponges use an aquiferous ... -
Environmental DNA monitoring of pelagic fish fauna at the Hywind Scotland floating wind energy installation – A pilot study
Ray, Jessica Louise; Hestetun, Jon Thomassen; Mugu, Sigrid; Dahlgren, Thomas Gunnar (Research report, 2022)Environmental impact assessment and regular environmental monitoring are prerequisites for the construction, operation, and decommissioning of offshore installations such as the Hywind Scotland wind park. Molecular approaches ... -
Grab what you can—an evaluation of spatial replication to decrease heterogeneity in sediment eDNA metabarcoding
Hestetun, Jon Thomassen; Lanzén, Anders; Dahlgren, Thomas Gunnar (Peer reviewed; Journal article, 2021)Environmental DNA methods such as metabarcoding have been suggested as possible alternatives or complements to the current practice of morphology-based diversity assessment for characterizing benthic communities in marine ... -
The impact of DNA extract homogenization and replication on marine sediment metabarcoding diversity and heterogeneity
Hestetun, Jon Thomassen; Lanzén, Anders; Skaar, Katrine Sandnes; Dahlgren, Thomas Gunnar (Peer reviewed; Journal article, 2021)Metabarcoding of environmental DNA (eDNA) is an attractive complement to morphological methods for surveys and routine monitoring of marine sediment benthic communities. However, metabarcoding and other genetic techniques ... -
Kunnskapsstatus for bruk av molekylære verktøy i kartlegging og overvåkning av biologisk mangfold i marine miljø
Dunshea, Glenn; Martell, Luis; Bakken, Torkild; Budaeva, Nataliya; Ekrem, Torbjørn; Tandberg, Anne Helene S.; Baussant, Thierry; de Boer, Hugo; Hestetun, Jon Thomassen; Hobæk, Anders; Kallioniemi, Eveliina; Larsen, Aud; Markussen, Stine Svalheim; Mauvisseau, Quentin; Ray, Jessica Louise; Yoccoz, Nigel; Willassen, Endre (Research report, 2021)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 ... -
Metabarcoding of sediment eDNA communities at the Hywind Scotland OWF – A pilot study
Hestetun, Jon Thomassen; Dahlgren, Thomas Gunnar (Research report, 2023)Environmental impact assessment and regular environmental monitoring of marine life are prerequisites for the construction, operation, and decommissioning of offshore wind farms (OWFs). Molecular methods such as metagenomics, ... -
MetaMon final project report - High-throughput metabarcoding of eukaryotic diversity for environmental monitoring of marine sediments
Hestetun, Jon Thomassen; Lanzén, Anders; Bagi, Andrea; Ray, Jessica Louise; Larsen, Aud; Dahlgren, Thomas Gunnar (Research report, 2021)MetaMon (2018-2021) was a project at the NORCE Molecular Ecology Research Group aimed at maturing eDNA for sediment offshore environmental monitoring. Findings include (i) guidelines for sampling and processing, (ii) a 97 ... -
Resipientovervåking av fjordsystemene rundt Bergen 2011-2016, Sammendragsrapport 2011-2016
Kvalø, Stian Ervik; Hestetun, Jon Thomassen; Bye-Ingebrigtsen, Einar (Research report, 2017)Denne rapporten er en samlerapport for resultatene i miljøovervåkningsprogrammet “Resipientovervåking av fjordsystemene rundt Bergen” i perioden 2011-2016. I forhold til tidligere Byfjordsundersøkelser, som bare omfattet ... -
Wind and Fisheries: Desktop Study on the Coexistence Between Offshore Wind and Fisheries in Sothern North Sea II
Austrheim, Elisabeth; Dahlgren, Thomas Gunnar; Handberg, Øyvind N.; Hestetun, Jon Thomassen; Haugland, Lars Martin; Aslesen, Sander Rivø; Navrud, Ståle (Research report, 2022)The Norwegian Government has launched a major initiative to promote offshore wind power , in which bottom-fixed wind power will be developed in the Southern North Sea II (SN II) area. There is a low level of fishing ...