Browsing Brage IMR by Author "Bagøien, Espen"
Now showing items 1-20 of 21
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Asynchronized spawning responses of small pelaigic fish to a short-term enviromental change
Tiedemann, Maik; Ndour, Ismaïla; Sow, Fambaye Ngom; Bagøien, Espen; Krakstad, Jens-Otto; Ostrowski, Marek; Stenevik, Erling Kåre; Ensrud, Tor Magne; Isari, Stamatina (Peer reviewed; Journal article, 2022)We provide substantial evidence on how short-term changes in environmental conditions activate and deactivate spawning activities in small pelagic fishes. An ichthyoplankton survey was conducted along the southernmost part ... -
Beskrivelse av miljø og levende marine ressurser i havområdene ved Jan Mayen
Fossum, Petter; Mork, Kjell Arne; Tverberg, Vigdis; Boitsov, Stepan; Heldal, Hilde Elise; Bagøien, Espen; Rønning, Jon; Slotte, Aril; Vollen, Tone; Wienerroither, Rupert; Dahle, Geir; Buhl-Mortensen, Pål; Øien, Nils; Øigård, Tor Arne; Fauchald, Per (Rapport fra Havforskningen;Nr. 16 - 2012, Working paper, 2012-05)Resultatene fra et tokt med ”G.O. Sars” på Jan Mayenryggen i oktober 2011 blir sammenstilt med våre andre overvåkingsdata og info fra litteraturen. Hensikten med prosjektet er å beskrive miljø og marine ressurser på sokkelen ... -
Blind dating—mate finding in planktonic copepods. I. Tracking the pheromone trail of Centropages typicus
Bagøien, Espen; Kiørboe, Thomas (Journal article; Peer reviewed, 2005-09-16)Mate-finding behaviour in the marine copepod Centropages typicus was investigated by 3-dimensional video analysis. Females leave a chemical trail in their wake and a male intercepting a fresh trail initiates a characteristic ... -
Blind dating—mate finding in planktonic copepods. II. The pheromone cloud of Pseudocalanus elongatus
Kiørboe, Thomas; Bagøien, Espen; Thygesen, Uffe Høgsbro (Journal article; Peer reviewed, 2005-09-16)Receptive females of Pseudocalanus elongatus, like many other planktonic copepods, produce pheromones to signal their presence and position to males, and thus enhance the rate of mate encounter. By means of 3D video ... -
Blind dating—mate finding in planktonic copepods. III. Hydromechanical communication in Acartia tonsa
Bagøien, Espen; Kiørboe, Thomas (Journal article; Peer reviewed, 2005-09-16)Mate-finding behaviour in the marine copepod Acartia tonsa was examined by video analysis. A. tonsa appears to depend on hydromechanical signals in the location of mates, detected at distances of up to 5 or 7 mm. Series ... -
Can predator avoidance explain varying overwintering depth of Calanus in different oceanic water masses?
Dale, Trine; Bagøien, Espen; Melle, Webjørn; Kaartvedt, Stein (Journal article; Peer reviewed, 1999-04-15)Distributions of overwintering Calanus spp. in the upper 1000 m in the Norwegian and Greenland Seas were studied in relation to hydrography, invertebrate predators and acoustic scattering layers (38 kHz). C, finmarchicus ... -
Climate effects on temporal and spatial dynamics of phytoplankton and zooplankton in the Barents Sea
Dalpadado, Padmini; Arrigo, Kevin R.; van Dijken, Gert L.; Skjoldal, Hein Rune; Bagøien, Espen; Dolgov, Andrey V.; Prokopchuk, Irina P.; Sperfeld, Erik (Peer reviewed; Journal article, 2020) -
Comparison of two multiple plankton samplers: MOCNESS and Multinet Mammoth
Strand, Espen; Broms, Cecilie Thorsen; Bagøien, Espen; Knutsen, Tor; Arnesen, Hilde; Mozfar, Bahar (Peer reviewed; Journal article, 2022)To ensure an optimal continuation of a long time series of zooplankton monitoring surveys, two types of equipment for depth-stratified mesozooplankton sampling were compared. The Institute of Marine Research (Norway) has ... -
The Continuous Plankton Recorder Survey – Monitoring plankton in the Nordic Sea
Edwards, M.; Helaouet, P.; Ostle, C.; Wootton, M.; Strand, Espen; Bagøien, Espen (Chapter, 2018)The warm-temperate calanoid copepod Calanus helgolandicus is becoming more common in the Nordic Seas with high records in 2016, which continued into 2017. The Pacific diatom Neodenticula seminae (an indicator of trans-Arctic ... -
Diversity and seasonal development of large zooplankton along physical gradients in the Arctic Barents Sea
Engeland, Tom Van; Bagøien, Espen; Wold, Anette; Cannaby, Heather Anne; Majaneva, Sanna Kristiina; Vader, Anna; Rønning, Jon S.; Handegard, Nils Olav; Dalpadado, Padmini; Ingvaldsen, Randi Brunvær (Peer reviewed; Journal article, 2023)Due to ongoing climate change, a new Arctic Ocean ecosystem is emerging. Within the framework of the Nansen Legacy project, we investigated the community composition of the large zooplankton and its seasonal development ... -
Innspill til høring - Forslag til program for konsekvensutredning for mineralvirksomhet på norsk sokkel
van der Meeren, Terje; Mork, Kjell Arne; Kutti, Tina; Knutsen, Tor; Bagøien, Espen; Frie, Anne Kirstine Højholt; Gjøsæter, Harald; Bienfait, André Marcel; Storesund, Julia Endresen; Dunlop, Katherine Mary; Windsland, Kristin; Hallfredsson, Elvar H.; Helle, Kristin; Höffle, Hannes; Junge, Claudia; Serigstad, Bjørn; Chierici, Melissa (Rapport fra havforskningen;2021 - 23, Research report, 2021)Rapporten er et høringssvar sendt til Olje- og Energidepartementet i forbindelse med et forslag til konsekvensutredningsprogram for mineralvirksomhet på norsk kontinentalsokkel. I høringssvaret påpeker Havforskningsinstituttet ... -
Pelagiske økosystem i De nordiske hav - grunnlagsstudie knyttet til åpningsprosess for utforskning og utvinning av havbunnsmineraler på norsk kontinentalsokkel
Kutti, Tina; Mork, Kjell Arne; Chierici, Melissa; Børsheim, Knut Yngve; Bagøien, Espen; Knutsen, Tor; Broms, Cecilie; Klevjer, Thor A.; Strand, Espen; Gjøsæter, Harald; Stenevik, Erling Kåre; Høines, Åge Sigurd; Windsland, Kristin; Frie, Anne Kirstine Højholt (Rapport fra havforskningen;2021 - 41, Research report, 2021)Denne rapporten er en leveranse til bestillingen «Grunnlagsstudie: Pelagisk økosystem» fra Oljedirektoratet til Havforskningsinstituttet. Studien er bestilt i forbindelse med at regjeringen har igangsatt en prosess for ... -
The record-warm Barents Sea and 0-group fish response to abnormal conditions
Eriksen, Elena; Bagøien, Espen; Strand, Espen; Primicerio, Raul; Prokhorova, Tatiana; Trofimov, Alexander; Prokopchuk, Irina (Peer reviewed; Journal article, 2020)The Barents Sea is a nursery area for many commercially and ecologically important fish stocks, and this whole region is presently subject to rapid climatic change from a cold period in the 1980s to a record warm period ... -
Revision of the Norwegian-Russian Barents Sea Ecosystem Survey (BESS) - The current status and revision of the Norwegian sector of the BESS survey
Eriksen, Elena; Johansen, Geir Odd; van der Meeren, Gro Ingleid; Mørk, Herdis Langøy; Karlson, Stine; Bagøien, Espen; Bao, Miguel; Berg, Erik; Bogstad, Bjarte; Boitsov, Stepan; Cipriani, Paolo; Dalpadado, Padmini; Danielsen, Hanna Ellerine Helle; Giulietti, Lucilla; Hallfredsson, Elvar Halldor; Heldal, Hilde Elise; Hjelset, Ann Merete; Holmin, Arne Johannes; Höffle, Hannes; Johannesen, Edda; Jørgensen, Lis Lindal; Levsen, Arne; Skaret, Georg; Solvang, Hiroko Kato; Storesund, Julia Endresen; Strand, Espen; Vee, Ida; Vollen, Tone; Wienerroither, Rupert; Windsland, Kristin; Zimmermann, Fabian; Øien, Nils Inge (Rapport fra havforskningen;2024 - 34, Research report, 2024)An effort to streamline the survey activity at the Institute of Marine Research (IMR) was initiated by the IMR leadership in December 2022. The purpose of this exercise is to balance the costs of the total cruise effort ... -
Seasonal and interannual variability in abundance and population development of Calanus finmarchicus at the western entrance to the Barents Sea, 1995–2019
Skjoldal, Hein Rune; Aarflot, Johanna Myrseth; Bagøien, Espen; Skagseth, Øystein; Rønning, Jon S.; Lien, Vidar Suren (Peer reviewed; Journal article, 2021)Data on copepodid abundance and stage composition of Calanus finmarchicus was collected with seasonal resolution (5–6 times a year) from four stations along an oceanographic transect across the western Barents Sea Opening ... -
Seasonal plankton dynamics along a cross-shelf gradient
Stenseth, Nils Christian; Llope, Marcos; Anadón, Ricardo; Ciannelli, Lorenzo; Chan, Kung-Sik; Hjermann, Dag Ø.; Bagøien, Espen; Ottersen, Geir (Journal article; Peer reviewed, 2006-08-08)Much interest has recently been devoted to reconstructing the dynamic structure of ecological systems on the basis of time-series data. Using 10 years of monthly data on phyto- and zooplankton abundance from the Bay of ... -
Spatial distributions and seasonality of four Calanus species in the Northeast Atlantic
Strand, Espen; Bagøien, Espen; Edwards, Martin; Broms, Cecilie; Klevjer, Thor A. (Peer reviewed; Journal article, 2020)This paper analyses spatial and seasonal patterns for near-surface abundances of four Calanus species in the Northeast Atlantic based on monthly Continuous Plankton Recorder (CPR) Survey data collected during 2008–2016. ... -
Status for miljøet i Barentshavet: Rapport fra Overvåkingsgruppen 2020
Jelmert, Anders; Sandø, Anne Britt; Frie, Anne Kirstine Højholt; Bogstad, Bjarte; Grøsvik, Bjørn Einar; Eriksen, Elena; Hallfredsson, Elvar H.; Stenevik, Erling Kåre; Bagøien, Espen; Ottersen, Geir; Skaret, Georg; Höffle, Hannes; Vee, Ida; Johansson, Josefina; Jørgensen, Lis Lindal; McBride, Margaret; Chierici, Melissa; Dalpadado, Padmini; Ingvaldsen, Randi Brunvær; Lien, Vidar Surén; Høines, Åge Sigurd; Fransson, Agneta; Sundfjord, Arild; von Quillfeldt, Cecilie; Lydersen, Christian; Hop, Haakon; Strøm, Hallvard; Johnsen, Hanne; Routti, Heli Anna Irmeli; Danielsen, Ida Kristin; Aars, Jon; Kovacs, Kit M.; Helgason, Lisa Bjørnsdatter; Itkin, Mikhail; Pavlova, Olga; Assmy, Philipp; Descamps, Sebastien; Lind, Sigrid; Gerland, Sebastian; Skotte, Gunnar; Stene, Kristine O.; Leiknes, Øystein; Skjerdal, Hilde Kristin; Jensen, Henning; Jensen, Andre Frantzen; Green, Norman Whitaker; Lorentsen, Svein Håkon (Rapport fra havforskningen;2020 - 13, Research report, 2020)I rapporten dekkes tre hovedtemaer: (1) Dominerende trekk i status og utvikling i økosystemet i Barentshavet siden 2016 med vekt på å beskrive hvordan sentrale prosesser påvirker tilstanden; (2) en mer detaljert beskrivelse ... -
Survey report (Part 2) from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August-October 2023 — Marine environment, Mesozooplankton, Commercial Demersal Fish, Fish Biodiversity, Commercial Shellfish, Benthic Invertebrate Community, Marine Mammals and Seabirds
Prozorkevich, Dmitri; Eriksen, Elena; Karlson, Stine; Trofimov, Aleksander; Ingvaldsen, Randi Brunvær; Grøsvik, Bjørn Einar; Prokhorova, Tatiana; Klepikovskiy, Roman; Bagøien, Espen; Johannesen, Edda; Bogstad, Bjarte; Wiedmann, Magnus Aune; Krivosheya, Pavel; Prokopchuk, Irina; Windsland, Kristin; Russkikh, Alexey; Wienerroither, Rupert; Filin, Anatoly; Zimmermann, Fabian; Hjelset, Ann Merete; Danielsen, Hanna Ellerine Helle; Bakanev, sergei; Stesko, Aleksei; Jørgensen, Lis Lindal; Blinova, Daria; Boehm, Frederike; Øien, Nils Inge; Strelkova, Natalia; Kudrayashova, Alexander; Fauchald, Per; Ollus, Victoria Marja Sofia; Ford, Jonathan; Elton, Gary (IMR/PINRO Joint Report Series;2024 - 9, Research report, 2024)The aim of the joint Norwegian/Russian ecosystem survey in the Barents Sea and adjacent waters, August-October (BESS) is to monitor the status and changes of in the Barents Sea ecosystem. The survey has since 2004 been ... -
Survey report from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August- December 2022
Johansen, Geir Odd; Trofimov, Alexander; Ingvaldsen, Randi Brunvær; Prokhorova, Tatiana; Grøsvik, Bjørn Einar; Krivosheya, Pavel; Bagøien, Espen; Lerch, Sarah Joanne; Prokopchuk, Irina; Eriksen, Elena; Husson, Berengere; Skaret, Georg; Johannesen, Edda; Bogstad, Bjarte; Windsland, Kristin; Höffle, Hannes; Wienerroither, Rupert; Hvingel, Carsten; Dolgov, Andrey; Hjelset, Ann Merete; Bakanev, Sergey; Stesko, Aleksei; Jørgensen, Lis Lindal; Øien, Nils Inge; Boehm, Frederike; Strelkova, Natalia; Blinova, Daria; Klepikovskiy, Roman; Fauchald, Per (IMR/PINRO Joint Report Series, Research report, 2023)The aim of the joint Norwegian/Russian ecosystem survey in the Barents Sea and adjacent waters, August-October (BESS) is to monitor the status and changes in the Barents Sea ecosystem and provide data to support stock ...