Browsing Brage IMR by Author "Sundby, Svein"
Now showing items 1-20 of 98
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A preliminary report on the natural occurrence and ecology of Atlantic halibut (Hippoglossus hippoglossus) postlarvae and young immature stages
Haug, Tore; Sundby, Svein (ICES CM Documents;1987/F:38, Working paper, 1987)Surveys designed to capture Atlantic halibut, Hippoglossus hippoglossus, postlarvae and young immatures were carried out around Sørøya in North Norway in 1985, 1986 and 1987. Hydrographical conditions and the current ... -
Abundance indices for the Arcto-Norwegian cod for the period 1979 -1986 based on investigations in June/July
Bjørke, Herman; Sundby, Svein (ICES CM Documents;1986/G:75, Working paper, 1986)Postlarvae Surveys have been carried out in the western part of the Barents Sea in June/July since 1977. The aim of the investigations has been to study the distribution pattern of fish larvae and their relation to the ... -
Abundance indices for the arcto-norwegian cod in 1979-1986 based on larvae investigations [HELP 5]
Bjørke, Herman; Sundby, Svein (help, Research report, 1987) -
Adult body growth and reproductive investment vary markedly within and across Atlantic and Pacific herring: a meta-analysis and review of 26 stocks
dos Santos Schmidt, Thassya C.; Hay, Doug E.; Sundby, Svein; Devine, Jennifer A.; Óskarsson, Guðmundur J.; Slotte, Aril; Wuenschel, Mark J.; Lajus, D. L.; Johannessen, Arne; van Damme, Cindy J. G.; Bucholtz, Rikke H.; Kjesbu, Olav S. (Peer reviewed; Journal article, 2021)Life-history traits of Pacific (Clupea pallasii) and Atlantic (Clupea harengus) herring, comprising both local and oceanic stocks subdivided into summer-autumn and spring spawners, were extensively reviewed. The main ... -
Akvakultur i Vest-Finnmark: Lokalisering av velegnede steder
Sundby, Svein (Fisken og havet - Serie B, Working paper, 1976) -
Assessment of Fish Spawning in the North Sea; Final Project Report of KINO-2, 2017–2021
Krafft, Bjørn Arne; Mateos-Rivera, Alejandro; Mozfar, Bahar; Skern-Mauritzen, Rasmus; Dahle, Geir; Sundby, Svein; Thorsen, Anders; Asplin, Lars; Wehde, Henning (Rapport fra havforskningen;2021 - 17, Research report, 2021)Increased and updated knowledge of reproductive strategies of fish is crucial to optimize the temporal and spatial planning for conducting seismic surveys; in order to reduce its potential negative ecosystems impacts. The ... -
Bio-physical properties of Norwegian coastal cod eggs
Jung, Kyung-Mi; Sundby, Svein; Thorsen, Anders; Folkvord, Arild; Kjesbu, Olav Sigurd (ICES CM documents;2009/C:11, Working paper, 2009)Vertical distribution of fish eggs and larvae is a key factor for transport and retention of the offspring, and for problems linked to mixing/separation between populations, and hence for mechanism maintaining genetic ... -
A case study on the distribution of cod larvae and availability of prey organisms in relation to physical processes in Lofoten. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein; Tilseth, Snorre (Flødevigen rapportserie, Conference object, 1984)The distribution of cod larvae and copepod nauplii off the Lofoten islands was studied in the years 1979-82. The highest concentrations of cod larvae and copepod nauplii were found in the Austnesfjord, Hølla-Henningsvær ... -
Comment to ‘Opdal AF, Jørgensen C (2015) Long-term change in a behavioural trait: truncated spawning distribution and demography in Northeast Arctic cod. Global Change Biology, 21, 1521-1530, doi: 10.1111/gcb.12773
Sundby, Svein (Journal article; Peer reviewed, 2015-05-12) -
Comparison of visual and molecular taxonomic methods to identify ichthyoplankton in the North Sea
Mateos-Rivera, Alejandro; Skern-Mauritzen, Rasmus; Dahle, Geir; Sundby, Svein; Mozfar, Bahar; Thorsen, Anders; Wehde, Henning; Krafft, Bjørn Arne (Peer reviewed; Journal article, 2020)The North Sea is an important spawning and nursery ground for many demersal and pelagic fishes whose spawning areas are largely overlapping in time and space. This makes ichthyoplankton visual identification from the various ... -
The 'critical period' concept - a century of recruitment research
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein (Others, 1995-11-23) -
Decline and Recovery of Atlantic Cod (Gadus morhua) Stocks throughout the North Atlantic
Lilly, George R.; Wieland, Kai; Rothschild, Brian J.; Sundby, Svein; Drinkwater, Ken; Brander, Keith; Ottersen, Geir; Carscadden, James E.; Stenson, Garry B.; Chouinard, Ghislain A.; Swain, Douglas P.; Daan, N.; Enberg, Katja; Hammill, Michael O.; Rosing-Asvid, Aqqalu; Svedäng, Henrik; Vázquez, Antonio (Chapter, 2008)Many stocks of Atlantic cod (Gadus morhua) on both sides of the North Atlantic are currently at much reduced levels of biomass, but this situation is not in all instances the result of long, continuous decline. Most Northwest ... -
Decline and Recovery of Atlantic Cod (Gadus morhua) Stocks throughout the North Atlantic
Lilly, George R.; Wieland, Kai; Rothschild, Brian J.; Sundby, Svein; Drinkwater, Ken; Brander, Keith; Ottersen, Geir; Carscadden, James E.; Stenson, Garry B.; Chouinard, Ghislain A.; Swain, Douglas P.; Daan, N.; Enberg, Katja; Hammill, Michael O.; Rosing-Asvid, Aqqalu; Svedäng, Henrik; Vázquez, Antonio (Chapter, 2008)Many stocks of Atlantic cod (Gadus morhua) on both sides of the North Atlantic are currently at much reduced levels of biomass, but this situation is not in all instances the result of long, continuous decline. Most Northwest ... -
Distribution and abundance indices of postlarval and 0-group cod
Bjørke, Herman; Sundby, Svein (PINRO-IMR Symposium, Conference object, 1987)Postlarvae surveys have been carried out in the southwestern part of the Barents Sea and the northeastern part of the Norwegian Sea in June/July since 1971, The aim of the Investigations has been to study characteristic ... -
Distribution and abundance of post larval Northeast Arctic cod and haddock
Bjørke, Herman; Sundby, Svein (PINRO-IMR Symposium, Conference object, 1984)From 1977 onwards an annua1 postlarvae survey has been carried out off northern Norway in June/July. The aim is to study the distribution of fish larvae, and to establish an index for thom 53m to surface. In 1983 the ... -
Dynamic Mapping of North Sea Spawning – Report of the KINO Project
Sundby, Svein; Kristiansen, Trond; Nash, Richard; Johannessen, Tore (Fisken og havet;2-2017, Research report, 2017-02-17)Spawning areas and spawning periods of 34 North Sea fish species have been studied by combining data, models and literature. Major part of data is from eggs and larvae surveys. In addition, data from research vessels and ... -
An ecosystem modeling approach to predicting cod recruitment
Svendsen, Einar; Skogen, Morten D.; Budgell, W. Paul; Huse, Geir; Stiansen, Jan Erik; Ådlandsvik, Bjørn; Vikebø, Frode; Asplin, Lars; Sundby, Svein (ICES CM documents, Working paper, 2006)Abstract The NORWECOM ocean model system implemented with the ROMS ocean circulation model has been run to simulate conditions over the last 25 years for the North Atlantic. Modelled time series of volume fluxes, primary ... -
The effect of biological and physical factors on the survival of Arcto-Norwegian cod and the influence on recruitment variability
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein; Tilseth, Snorre (PINRO-IMR Symposium, Conference object, 1987)Data from egg and larval field investigations h the Lofoten area are used together with long time series of data on temperature and zooplankton in Lofoten and abundance indices of Arcto-Norwegian cod. The importance ... -
Effects of climate on marine ecosystem
Vikebø, Frode; Sundby, Svein; Ådlandsvik, Bjørn (ICES CM Documents;2003/O:7, Working paper, 2003)The spawning areas of the Arcto-Norwegian cod are located along the coast of mid and northern Norway, particulary in the Lofoten where up to 70% of the spawning occurs from mid March to early May. The larvae are carried ... -
Egg buoyancy variability in local populations of Atlantic cod (Gadus morhua)
Jung, Kyung-Mi; Folkvord, Arild; Kjesbu, Olav Sigurd; Agnalt, Ann-Lisbeth; Thorsen, Anders; Sundby, Svein (Journal article; Peer reviewed, 2012-06-29)Previous studies have found strong evidences for Atlantic cod (Gadus morhua) egg retention in fjords, which are caused by the combination of vertical salinity structure, estuarine circulation, and egg specific gravity, ...