Blar i Published externally på forfatter "Eriksen, Elena"
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An evaluation of 0-group abundance indices of Barents Sea fish stocks
Eriksen, Elena; Prozorkevich, Dmitry; Dingsør, Gjert Endre (Journal article; Peer reviewed, 2009)The International 0-group fish survey in the Barents Sea (1965-2002) aimed to give initial indication of the recruiting year class strengths. Since 2003 the 0-group survey has been a part of a Joint Norwegian-Russian ... -
Assessment of marine litter in the Barents Sea, a part of the joint Norwegian-Russian ecosystem survey
Grøsvik, Bjørn Einar; Prokhorova, Tatiana; Eriksen, Elena; Krivosheya, Pavel; Horneland, Per Arne; Prozorkevich, Dmitry (Journal article; Peer reviewed, 2018)This study presents a large-scale monitoring of marine litter performed in the joint Norwegian–Russian ecosystem monitoring surveys in the period from 2010 to 2016 and contribute to documentation of the extent of marine ... -
Biomass of Scyphozoan Jellyfish, and Its Spatial Association with 0-Group Fish in the Barents Sea
Eriksen, Elena; Prozorkevich, Dmitry; Trofimov, Aleksandr; Howell, Daniel (Journal article; Peer reviewed, 2012-03-22)An 0-group fish survey is conducted annually in the Barents Sea in order to estimate fish population abundance. Data on jellyfish by-catch have been recorded since 1980, although this dataset has never been analysed. In ... -
Deep Vision: An In-Trawl Stereo Camera Makes a Step Forward in Monitoring the Pelagic Community
Underwood, Melanie J.; Rosen, Shale; Engås, Arill; Eriksen, Elena (Journal article; Peer reviewed, 2014-11-13)Ecosystem surveys are carried out annually in the Barents Sea by Russia and Norway to monitor the spatial distribution of ecosystem components and to study population dynamics. One component of the survey is mapping the ... -
Diet and trophic structure of fishes in the Barents Sea: the Norwegian-Russian program “Year of stomachs” 2015 - establishing a baseline
Eriksen, Elena; Benzik, Aleksander N.; Dolgov, Andrey V.; Skjoldal, Hein Rune; Vihtakari, Mikko Juhani; Johannesen, Edda; Prokhorova, Tatiana; Keulder-Stenevik, Felicia Juanita; Prokopchuk, Irina; Strand, Espen (Peer reviewed; Journal article, 2020)There is a long history of investigations of fish diet in the Barents Sea. The focus has been on commercially important fish species and their food consumption, while diet and interactions of other fishes have been studied ... -
Direct and indirect effects of sea ice cover on major zooplankton groups and planktivorous fishes in the Barents Sea
Stige, Leif Christian; Eriksen, Elena; Dalpadado, Padmini; Ono, Kotaro (Peer reviewed; Journal article, 2019)Reductions in Arctic sea ice affect marine food webs through a multitude of direct and indirect effects. We here analysed direct, indirect, and delayed associations between winter sea ice cover and year-to-year changes in ... -
From single species surveys towards monitoring of the Barents Sea ecosystem
Eriksen, Elena; Gjøsæter, Harald; Prozorkevich, Dmitry V.; Shamray, Evgeny; Dolgov, Andrey V.; Skern-Mauritzen, Mette; Stiansen, Jan Erik; Kovalev, Yu; Sunnanå, Knut (Journal article; Peer reviewed, 2017)The Barents Sea, a large, high-latitude shelf sea, has been monitored and investigated for more than a century. More than 1800 occasional expeditions have been organized both by Norway and Russia, and since the1960s the ... -
Highly mixed impacts of near-future climate change on stock productivity proxies in the North East Atlantic
Kjesbu, Olav Sigurd; Sundby, Svein; Sandø, Anne Britt; Alix, Maud; Hjøllo, Solfrid Sætre; Tiedemann, Maik; Skern-Mauritzen, Mette; Junge, Claudia; Fossheim, Maria; Broms, Cecilie; Søvik, Guldborg; Zimmermann, Fabian; Nedreaas, Kjell Harald; Eriksen, Elena; Höffle, Hannes; Hjelset, Ann Merete; Kvamme, Cecilie; Reecht, Yves; Knutsen, Halvor; Aglen, Asgeir; Albert, Ole Thomas; Berg, Erik; Bogstad, Bjarte; Durif, Caroline; Halvorsen, Kim Aleksander Tallaksen; Høines, Åge Sigurd; Hvingel, Carsten; Johannesen, Edda; Johnsen, Espen; Moland, Even; Myksvoll, Mari Skuggedal; Nøttestad, Leif; Olsen, Erik Joel Steinar; Skaret, Georg; Skjæraasen, Jon Egil; Slotte, Aril; Staby, Arved; Stenevik, Erling Kåre; Stiansen, Jan Erik; Stiasny, Martina H.; Sundet, Jan Henry; Vikebø, Frode Bendiksen; Huse, Geir (Peer reviewed; Journal article, 2021)Impacts of climate change on ocean productivity sustaining world fisheries are predominantly negative but vary greatly among regions. We assessed how 39 fisheries resources—ranging from data-poor to data-rich stocks—in the ... -
Key processes regulating the early life history of Barents Sea polar cod
Gjøsæter, Harald; Huserbråten, Mats Brockstedt Olsen; Vikebø, Frode Bendiksen; Eriksen, Elena (Peer reviewed; Journal article, 2020)The polar cod (Boreogadus saida) in the Barents Sea is one of the main stocks of this species in the Arctic, reaching a total biomass of almost 2 million tonnes in some years. It has been fluctuating considerably in ... -
Marine indikatorer
van der Meeren, Gro; Øigård, Tor Arne; Øien, Nils; Nilssen, Kjell Tormod; Oug, Eivind; Sunnanå, Knut; Jakobsen, Tore; Mehl, Sigbjørn; Kvamme, Cecilie; Torstensen, Else; Stenevik, Erling Kåre; Planque, Benjamin; Helle, Gunnar; Gjøsæter, Jakob; Skiftesvik, Anne Berit; Aglen, Asgeir; Johannessen, Tore; Dommasnes, Are; Naustvoll, Lars-Johan; Moy, Frithjof E.; Falkenhaug, Tone; Melle, Webjørn; Knutsen, Tor; Eriksen, Elena; Jørgensen, Lis Lindal; Fosså, Jan Helge; Bannister, Raymond; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Strand, Øivind; Søvik, Guldborg; Jelmert, Anders; Knutsen, Jan Atle; Enersen, Svein Erik; Edvardsen, Hanne; Kroglund, Tone; Pedersen, Atle; Eikrem, Wenche; Bekkby, Trine; Tveite, Stein (DN-utredning;4-2010, Chapter, 2010-09)The Nature Index (NI) is established to get an overview of the state and development of biodiversity within the major ecosystems of Norway. It includes marine, limnic and terrestrial ecosystems. The aim of the index is to ... -
New insights into the Barents Sea Calanus glacialis population dynamics and distribution
Aarflot, Johanna Myrseth; Eriksen, Elena; Prokopchuk, Irina P.; Svensen, Camilla; Søreide, Janne; Wold, Anette; Skogen, Morten D. (Peer reviewed; Journal article, 2023)Arctic copepods are major grazers and vital food for planktivores in polar ecosystems but challenging to observe due to remoteness and seasonal sea ice coverage. Models offer higher spatio-temporal resolution, and ... -
Polar cod egg and larval drift patterns in the Svalbard archipelago
Eriksen, Elena; Huserbråten, Mats Brockstedt Olsen; Gjøsæter, Harald; Vikebø, Frode Bendiksen; Albretsen, Jon (Journal article; Peer reviewed, 2019)Spawning of polar cod (Boreogadus saida) in the vicinity of the Svalbard archipelago has not been directly observed. From the distribution pattern of polar cod 0-group observed during annual monitoring of the Barents Sea, ... -
Polar cod in jeopardy under the retreating Arctic sea ice
Huserbråten, Mats Brockstedt Olsen; Eriksen, Elena; Gjøsæter, Harald; Vikebø, Frode Bendiksen (Journal article; Peer reviewed, 2019)The Arctic amplification of global warming is causing the Arctic-Atlantic ice edge to retreat at unprecedented rates. Here we show how variability and change in sea ice cover in the Barents Sea, the largest shelf sea of ... -
Real-Time Ichthyoplankton Drift in Northeast Arctic Cod and Norwegian Spring-Spawning Herring
Vikebø, Frode; Ådlandsvik, Bjørn; Albretsen, Jon; Sundby, Svein; Stenevik, Erling Kåre; Huse, Geir; Svendsen, Einar; Kristiansen, Trond; Eriksen, Elena (Journal article; Peer reviewed, 2011-11-16)Background: Individual-based biophysical larval models, initialized and parameterized by observations, enable numerical investigations of various factors regulating survival of young fish until they recruit into the adult ... -
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 ... -
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017)
Skjoldal, Hein Rune; Eriksen, Elena; Gjøsæter, Harald; Skagseth, Øystein; Prozorkevich, Dmitry A.; Lien, Vidar Surén (Peer reviewed; Journal article, 2022)Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ... -
Size-fractioned zooplankton biomass in the Barents Sea: Spatial patterns and temporal variations during three decades of warming and strong fluctuations of the capelin stock (1989–2020)
Skjoldal, Hein Rune; Eriksen, Elena; Gjøsæter, Harald (Peer reviewed; Journal article, 2022)Zooplankton biomass has been monitored on joint Norwegian-Russian surveys in late summer and autumn since the 1980s. We report here on zooplankton biomass in three size fractions (<1, 1–2, and > 2 mm in screen mesh opening) ... -
Spatial and temporal changes in the Barents Sea pelagic compartment during the recent warming
Eriksen, Elena; Skjoldal, Hein Rune; Gjøsæter, Harald; Primicerio, Raul (Peer reviewed; Journal article, 2017) -
Spatio-temporal turnover and drivers of bentho-demersal community and food web structure in a high-latitude marine ecosystem
Pecuchet, Laurene; Jørgensen, Lis Lindal; Dolgov, Andreyv V.; Eriksen, Elena; Husson, Berengere; Skern-Mauritzen, Mette; Primicerio, Raul (Peer reviewed; Journal article, 2022)Assess the spatial and temporal turnover of bentho-demersal marine fauna by integrating ecological metrics at the community and food web levels and evaluate their main environmental and anthropogenic drivers. -
Still Arctic? — The changing Barents Sea
Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Peer reviewed; Journal article, 2023)The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. ...