Browsing NTNU Open by Author "Bakken, Torkild"
Now showing items 1-20 of 81
-
A catalogue of the type specimens of protozoans, invertebrates and fish in the Museum of Natural History and Archaeology, NTNU
Bakken, Torkild (Gunneria, 0332-8554; 74, Research report, 1999)This catalogue gives a review of the zoological type material deposited in the Museum of Natural History and Archaeology, Norwegian University of Science and Technology. The museum dates back to the eighteenth century but ... -
A faunistic assessment of species diversity in the class Ascidiacea in Norwegian waters using morphological and molecular analyses, including three case studies of the genera Ascidiella Roule, 1884, Botryllus Gaertner, 1774, and Botrylloides Milne Edwards, 1841
Mathisen, Tiril Sørlie (Master thesis, 2023)I moderne systematikk brukes en integrativ tilnærming for artsavgrensning, hvor morfologiske og molekylære metoder ofte kombineres. Ett av målene med DNA-strekkoding er å bygge en plattform for identifisering av dyrearter, ... -
A mega-cryptic species complex hidden among one of the most common annelids in the North East Atlantic
Nygren, Arne; Parapar, Julio; Meissner, Karin; Pons, Joan; Bakken, Torkild; Kongsrud, Jon Anders; Gaeva, Daria; Oug, Eivind; Sirkoski, Andrey; Johansen, Robert Andre; Hutchings, Pat; Lavasque, Nicolas; Capa Corrales, Maria (Journal article; Peer reviewed, 2018)We investigate mitochondrial (COI, 16S rDNA) and nuclear (ITS2, 28S rDNA) genetic structure of North East Atlantic lineages of Terebellides, a genus of sedentary annelids mainly inhabiting continental shelf and slope ... -
A molecular and morphological study of Bivalvia (Phylum: Mollusca) in Norwegian waters, with emphasis on Pectinidae Rafinesque, 1815
Skahjem, Nathalie (Master thesis, 2019)Art regnes for å være den grunnleggende enheten innenfor biologi. Dette understreker viktigheten av både avgrensning av arter, å finne antall arter og grensen mellom disse, og taksonomi, å navngi, beskrive og klassifisere ... -
A revision of Nereidinae (Polychaeta, Nereididae)
Bakken, Torkild (Doktoravhandlinger ved NTNU, 1503-8181; 2004:3, Doctoral thesis, 2004)Groups of taxa of the polychaete family Nereididae were studied with the aim of presenting a revision of the subfamily Nereidinae. Detailed description of characters starting with a selected group, Neanthes, was extended ... -
Aerial & Underwater Hyperspectral Imagery For Shallow Benthic Nature Type Mapping
Bjerkvoll, Mikkel (Master thesis, 2022)Natur i Norge (NiN) systemet klassifiserer naturtyper basert på miljøvariabler. Storskala kartlegging av bentiske naturtyper er vanskelig, ettersom lys utslukkes fort på dype områder, og grunt vann er vanskelig å forsere. ... -
Archaeology and biology in the deep sea: The Ormen Lange marine archaeology project
Søreide, Fredrik; Bakken, Torkild; Jasinski, Marek E. (Chapter, 2013)This paper presents the results and conclusions of a biological sampling project on the Ormen Lange deep-water shipwreck site. -
Arenicolidae (Annelida) in Norwegian waters: Species occurrence, bathymetric distribution and identification of juvenile specimens
Dille, Marthe Ree; Kongsrud, Jon Anders; Hektoen, Martin Mejdell; Bakken, Torkild (Journal article; Peer reviewed, 2024)The two species of Arenicolidae, Arenicola marina and Arenicolides ecaudata, are common along the Norwegian coast. Juveniles and anterior fragments are often encountered when grab sampling, making traditional morphological ... -
Benthic Communities on the Mohn’s Treasure Mound: Implications for Management of Seabed Mining in the Arctic Mid-Ocean Ridge
Ramirez-Llodra, Eva; Hilário, Ana; Paulsen, Emil; Costa, Carolina; Bakken, Torkild; Johnsen, Geir; Rapp, Hans Tore (Peer reviewed; Journal article, 2020)The Mohn’s Treasure, described as an inactive sulfide mound, was discovered at 2,600- m depth on the Arctic Mid-Ocean Ridge (AMOR) in 2002. In 2015, we conducted the first biological survey of Mohn’s Treasure using remotely ... -
Bio-optical diversity on cold water coral habitats
Andersson, Ingvild Henriette Kristin (Master thesis, 2017)This study aimed to elucidate the bio-optical diversity of cold water coral habitats and to further improve the accuracy and efficiency of seafloor mapping with the use of an Underwater Hyperspectral Imager (UHI). Comparison ... -
Biodiversity hotspot in cold waters: a review of the genus Cuthonella with descriptions of seven new species (Mollusca, Nudibranchia)
Korshunova, Tatiana; Sanamyan, Nadezhda P.; Sanamyan, Karen E.; Bakken, Torkild; Lundin, Kennet; Fletcher, Karin; Martynov, Alexander (Peer reviewed; Journal article, 2020)Cuthonella Bergh, 1884 is of one of the most neglected nudibranch groups, with a long history of taxonomic confusion with other aeolidacean genera. Owing to its predominantly Arctic distribution with cold water, its species ... -
Biogeographic patterns of distribution of the mollusc Zelentia ninel (Nudibranchia, Trinchesiidae)
Broms, Fredrik Björn; Bakken, Torkild; Martynov, Alexander; Korshunova, Tatiana (Peer reviewed; Journal article, 2023)In the present contribution we report, for the first time, records of the nudibranch Zelentia ninel from Norway. The species is previously known only from the Barents Sea coast in northern Russia where it was described for ... -
Bishop Gunnerus as a naturalist: His impact on biodiversity research today
Bakken, Torkild; Fremstad, Eli; Aagaard, Kaare (Chapter, 2011)Bishop Gunnerus started his work as naturalist as soon as he arrived in Trondheim. In a pastoral letter to his clergymen he instructed them to collect specimens and information on natural history in their parishes. ... -
Bryozoans in shallow water habitats in Norway: New records and DNA barcoding
Benjaminsen, Tine Mathilde (Master thesis, 2022)Det er få studier om mosdyr i Norge, de fleste er fra 1850-1950. Denne masteroppgaven hadde derfor som mål å bidra med ny kartlegging av mosdyr langs norskekysten i grunne habitater. I tillegg bidra med prøver til DNA ... -
Community structure and biodiversity of the benthic megafauna at the inactive hydrothermal site Mohn's Treasure, on the Mohn's Ridge, Arctic Mid-Ocean Ridge (AMOR)
Paulsen, Emil (Master thesis, 2017)This thesis aims to describe the deep sea benthic megafauna communities of the geologically inactive vent site of Mohn's Treasure, situated on the Mohn's Ridge, a part of the Arctic Mid-Ocean Ridge (AMOR). The data was ... -
Corals as substrate for tube-dwelling anemones
Ceriello, Hellen; Costa, Gabriel G.; Bakken, Torkild; Stampar, Sergio N. (Peer reviewed; Journal article, 2020)This study is about seven individuals of Botrucnidifer norvegicus Carlgren, 1912 (Anthozoa, Ceriantharia) that were attached to a stony deep-sea coral, Desmophyllum pertusum Linnaeus, 1758 (Anthozoa, Scleractinia). They ... -
Cryptic species diversity and eDNA metabarcoding in marine ecosystem monitoring
Hektoen, Martin Mejdell (Doctoral theses at NTNU;2024:343, Doctoral thesis, 2024)English summary Marine sediments constitute the largest ecosystem on Earth, yet they remain poorly studied. With increasing human activities in the coastal zone, these understudied environments face unprecedented pressures ... -
The curious and intricate case of the European Hediste diversicolor (Annelida, Nereididae) species complex, with description of two new species
Teixeira, Marcos A. L.; Bakken, Torkild; Vieira, Pedro E.; Langeneck, Joachim; Sampieri, Bruno R.; Kasapidis, Panagiotis; Ravara, AscensÃO; Nygren, Arne; Costa, Filipe O. (Peer reviewed; Journal article, 2022)Past molecular studies using mtDNA sequences and alloenzymes signalled the existence of at least two cryptic species within the Hediste diversicolor morphotype, in European coasts. However, to this day, no new species ... -
Deep-water species of the genus Ophelina (Annelida, Opheliidae) in the Nordic Seas, with the description of Ophelina brattegardi sp. nov
Kongsrud, Jon Anders; Bakken, Torkild; Oug, Eivind (Journal article; Peer reviewed, 2011)Six species of Ophelina Ørsted, 1843 have been identified in an extensive material covering 145 localities from 575 to 3900 m depth in the Nordic Seas. Ophelina opisthobranchiata Wirén, 1901 and O. helgolandiae Augener, ... -
Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics
Grosse, Maël Ariel; Capa, Maria; Bakken, Torkild (Journal article; Peer reviewed, 2021)Using molecular markers and species delimitation analyses, a high diversity of bi-tentaculate Cirratulidae was discovered from the North-East Atlantic. Five new species are described: Chaetozone pseudosetosa sp. nov., ...