Guðmundur J. Óskarsson

2019

Guðmundur J. Óskarsson , Hildur Pétursdóttir , Ayca Eleman. Helstu niðurstöður vistfræðileiðangurs í Austurdjúp á RS Árna Friðrikssyni í maí 2019. HV 2019-43. 2019.
Guðmundur J. Óskarsson . Niðurstöður bergmálsmælinga á íslenskri sumargotssíld veturinn 2018/19. HV 2019-37. 2019.
Sigurvin Bjarnason , Birkir Bárðarson, Svanhildur Egilsdóttir , Guðmundur J. Óskarsson . Verification of macroscopic maturity staging in Iceland‐East Greenland‐Jan Mayen capelin (Mallotus villosus). HV 2019-32. 2019.
Teunis Jansen, Sören Post, Anna Heiða Ólafsdóttir , Páll Reynisson , Guðmundur J. Óskarsson , Kristine Engel Arendt. Diel vertical feeding behaviour of Atlantic mackerel (Scomber scombrus) in the Irminger current. Fisheries Research. 2019;214:25-34. https://doi.org/10.1016/j.fishres.2019.01.020
Björn Gunnarsson , Jónas P. Jónasson , Kai Logemann, Guðrún Marteinsdóttir, Guðmundur J. Óskarsson . Recent occurrence and origin of juvenile Atlantic mackerel (Scomber scombrus L.) in Icelandic waters. HV 2019-03. 2019.

2018

Guðmundur J. Óskarsson . The existence and population connectivity of Icelandic spring-spawning herring over a 50-year collapse period. ICES Journal of Marine Science. 2018;75:2025-2032. https://doi.org/10.1093/icesjms/fsy120
Anna Heiða Ólafsdóttir , Kjell Rogn Utne, Jan Arge Jacobsen, Teunis Jansen, Guðmundur J. Óskarsson , Leif Nøttestad, Bjarki Þór Elvarsson , Cecilie Broms, Aril Slotte. Geographical expansion of Northeast Atlantic mackerel (Scomber scombrus) in the Nordic Seas from 2007 to 2016 was primarily driven by stock size and constrained by low temperatures. Deep Sea Research Part II: Topical Studies in Oceanography. 2018. https://doi.org/10.1016/j.dsr2.2018.05.023
Guðmundur J. Óskarsson , Sólveig Rósa Ólafsdóttir , Þorsteinn Sigurðsson , Héðinn Valdimarsson . Observation and quantification of two incidents of mass fish kill of Icelandic summer spawning herring (Clupea harengus) in the winter 2012/2013. Fisheries Oceanography. 2018;27 (4):302-311. https://doi.org/10.1111/fog.12253

2017

Guðmundur J. Óskarsson , Jónbjörn Pálsson , Ásta Guðmundsdóttir . An ichthyophoniasis epizootic in Atlantic herring in marine waters around Iceland. Canadian Journal of Fisheries and Aquatic Sciences. 2017;75 (7):1106-1116. https://doi.org/10.1139/cjfas-2017-0219
Thassya C. dos Santos Schmidt, Aril Slotte, James Kennedy , Svein Sundby, Arne Johannessen, Guðmundur J. Óskarsson , Yutaka Kurita, Nils C. Stenseth, Olav Sigurd Kjesbu. Oogenesis and reproductive investment of Atlantic herring are functions of not only present but long-ago environmental influences as well. Proceedings of the National Academy of Sciences. 2017;114:2634-2639. https://doi.org/10.1073/pnas.1700349114

2016

Teunis Jansen, Sören Post, Trond Kristiansen, Guðmundur J. Óskarsson , Jesper Boje, Brian R. MacKenzie, Mala Broberg, Helle Siegstad. Ocean warming expands habitat of a rich natural resource and benefits a national economy. Ecological Applications. 2016;26 (7):2021-2032. https://doi.org/10.1002/eap.1384
Anna Heiða Ólafsdóttir , Aril Slotte, Jan Arge Jacobsen, Guðmundur J. Óskarsson , Kjell Rogn Utne, Leif Nøttestad. Changes in weight-at-length and size-at-age of mature Northeast Atlantic mackerel (Scomber scombrus) from 1984 to 2013: effects of mackerel stock size and herring (Clupea harengus) stock size. ICES Journal of Marine Science. 2016;73:1255-1265. https://doi.org/10.1093/icesjms/fsv142
Guðmundur J. Óskarsson , Christopher T. Taggart, Robert L. Stephenson. Fecundity and reproductive potential of Scotia-Fundy summer- and autumn spawning herring (Clupea harengus L). Canadian Technical Report of Fisheries and Aquatic Sciences. 2016;3182:7+27 p..

2015

Leif Nøttestad, Kjell Rogn Utne, Guðmundur J. Óskarsson , Sigurður Þór Jónsson , Jan Arge Jacobsen, Öyvind Tangen, Valentine Anthonypillai, Sondre Aanes, Jon Helge Völstad, Matteo Bernasconi, Högni Debes, Leon Smith, Sveinn Sveinbjörnsson, Jens C. Holst, Teunis Jansen, Aril Slotte. Quantifying changes in abundance, biomass, and spatial distribution of Northeast Atlantic mackerel ( Scomber scombrus ) in the Nordic seas from 2007 to 2014. ICES Journal of Marine Science. 2015;73 (2):359-373. https://doi.org/10.1093/icesjms/fsv218
Guðmundur J. Óskarsson , Ásta Guðmundsdóttir , Sveinn Sveinbjörnsson, Þorsteinn Sigurðsson . Feeding ecology of mackerel and dietary overlap with herring in Icelandic waters. Marine Biology Research. 2015;12 (1):16-29. https://doi.org/10.1080/17451000.2015.1073327
Sanne Kjellerup, Michael Dünweber, Eva Friis Möller, Doris Schiedek, Guðmundur J. Óskarsson , Frank Rigét, Kasper Lambert Johansen, Anders Mosbech. Vertical and horizontal distribution of zooplankton and polar cod in southern Baffin Bay (66–71°N) in September 2009. Polar Biology. 2015;38 (5):699-718. https://doi.org/10.1007/s00300-014-1633-4
Lisa Anne Libungan , Guðmundur J. Óskarsson , Aril Slotte, Jan Arge Jacobsen, Snæbjörn Pálsson. Otolith shape: a population marker for Atlantic herring Clupea harengus. Journal of Fish Biology. 2015;86 (4):1377-1395. https://doi.org/10.1111/jfb.12647
Erling Kåre Stenevik, Jon Helge Völstad, Åge Höines, Sondre Aanes, Guðmundur J. Óskarsson , Jan Arge Jacobsen, Öyvind Tangen. Precision in estimates of density and biomass of Norwegian spring-spawning herring based on acoustic surveys. Marine Biology Research. 2015;11 (5):449-461. http://dx.doi.org/10.1080/17451000.2014.995672
Christophe Pampoulie , Aril Slotte, Guðmundur J. Óskarsson , Sarah J. Helyar, Ásbjörn Jónsson, Guðbjörg Ólafsdóttir, Sigurlaug Skírnisdóttir, Lisa Anne Libungan , Jan Arge Jacobsen, Hróaldur Joensen, Henrik Hauch Nielsen, Sindri Karl Sigurðsson , Anna Kristín Daníelsdóttir. Stock structure of Atlantic herring Clupea harengus in the Norwegian Sea and adjacent waters. Marine Ecology Progress Series. 2015;522:219-230. https://doi.org/10.3354/MEPS11114
Ólafur S. Ástþórsson , Héðinn Valdimarsson , Ásta Guðmundsdóttir , Guðmundur J. Óskarsson . Makríll og ástand sjávar í 100 ár. Ægir. 2015;108:52-56.

2014

Verena M. Trenkel, Geir Huse, Brian R. MacKenzie, Paula Alavarez, Haritz Arrizabalanga, Martin Castonguay, Nicolas Goni, Francois Grégoire, Hjálmar Hátún, Teunis Jansen, Jan Arge Jacobsen, Patrick Lehodey, Molly E. Lutacavage, Patrizio Mariani, Gary D. Melvin, John D. Neilson, Leif Nøttestad, Guðmundur J. Óskarsson , Mark R. Payne, David E. Richardson, Inna Senina, Douglas C. Speirs. Comparative ecology of widely distributed pelagic fish species in the North Atlantic: Implications for modelling climate and fisheries impacts. Progress in Oceanography. 2014;129:219-243. http://dx.doi.org/10.1016/j.pocean.2014.04.030
Geir Huse, Brian R. MacKenzie, Verena M. Trenkel, Mathieu Doray, Leif Nøttestad, Guðmundur J. Óskarsson . Spatially explicit estimates of stock sizes, structure and biomass of herring and blue whiting, and catch data of bluefin tuna. Earth System Science Data. 2014;7:457-493. https://doi.org/10.5194/essdd-7-457-2014
John Pinnegar, Nicolas Goni, Verena M. Trenkel, Haritz Arrizabalanga, Webjörn Melle, James Keating, Guðmundur J. Óskarsson . A new compilation of stomach content data for commercially important pelagic fish species in the northeast Atlanti. Earth System Science Data. 2014;7:197-223. https://doi.org/10.5194/essdd-7-197-2014
Guðmundur J. Óskarsson , Aril Slotte. Endurheimtur makrílmerkja við Ísland. Sjávarafl. 2014;1 (2):26-27.

2013

Guðbjörg Ólafsdóttir, Kristinn Ólafsson, Sigurlaug Skírnisdóttir, Guðmundur J. Óskarsson , Doreen Kohlbach, Helga Franklínsdóttir, Cecilia Elisabeth Klitgaard Kvaavik , Renée Morneau, André Chevrier, Christophe Pampoulie , Sarah J. Helyar, Anna Kristín Daníelsdóttir. Isolation and characterization of thirty microsatellite loci for Atlantic mackerel (Scomber scombrus L.). Conservation Genetics Resources. 2013;5:4191-494. https://www.doi.org/10.1007/s12686-012-9835-y

2012

Lisa Anne Libungan , Guðbjörg Ólafsdóttir, Sigurlaug Skírnisdóttir, Snæbjörn Pálsson, Christophe Pampoulie , S. H. Björnsdóttir, Kristinn Ólafsson, Guðmundur J. Óskarsson , Anna Kristín Daníelsdóttir. Fourteen new microsatellite markers for Atlantic herring Clupea harengus. Journal of Fish Biology. 2012;81:1422-1426. https://doi.org/10.1111/j.1095-8649.2012.03391.x
Ólafur S. Ástþórsson , Héðinn Valdimarsson , Ásta Guðmundsdóttir , Guðmundur J. Óskarsson . Climate-related variations in the occurrence and distribution of mackerel (Scomber scombrus) in Icelandic waters. ICES Journal of Marine Science. 2012;69:1289-1297. https://doi.org/10.1093/icesjms/fss084
Kjell Rogn Utne, Geir Huse, Jens C. Holst, Vladimir Zabavnikov, Jan Arge Jacobsen, Guðmundur J. Óskarsson , Leif Nøttestad. Horizontal distribution and overlap of planktivorous fish stocks in the Norwegian Sea during summers 1995–2006. Marine Biology Research. 2012;8 (5-6):420-441. http://dx.doi.org/10.1080/17451000.2011.640937

2010

Guðmundur J. Óskarsson , Jónbjörn Pálsson . Sýking í íslenskri sumargotssíld. Útvegsblaðið. 2010;8:26.
Guðmundur J. Óskarsson , Christopher T. Taggart. Variation in reproductive potential and influence on Icelandic herring recruitment. Fisheries Oceanography. 2010;19:412-426. https://doi.org/10.1111/j.1365-2419.2010.00554.x

2009

Guðmundur J. Óskarsson , Christopher T. Taggart. Spawning time variation in Icelandic summer-spawning herring (Clupea harengus). Canadian Journal of Fisheries and Aquatic Sciences. 2009;66:1666-1681. https://doi.org/10.1139/F09-095
Guðmundur J. Óskarsson , Ásta Guðmundsdóttir , Þorsteinn Sigurðsson . Variation in spatial distribution and migration of Icelandic summer-spawning herring . ICES Journal of Marine Science. 2009;66:1762-1767. https://doi.org/10.1093/icesjms/fsp116

2008

Guðmundur J. Óskarsson . Variation in body condition, fat content and growth rate of Icelandic summer‐spawning herring Clupea harengus L.. Journal of Fish Biology. 2008;72:2655-2676. https://doi.org/10.1111/j.1095-8649.2008.01886.x

2007

Ásta Guðmundsdóttir , Guðmundur J. Óskarsson , Sveinn Sveinbjörnsson. Estimating year-class strength of Icelandic summer-spawning herring on the basis of two survey method. ICES Journal of Marine Science. 2007;6:1182-1190. https://doi.org/10.1093/icesjms/fsm088

2006

Guðmundur J. Óskarsson , Christopher T. Taggart. Fecundity variation in Icelandic summer-spawning herring and implications for reproductive potential. ICES Journal of Marine Science. 2006;63:493-503. https://doi.org/10.1016/j.icesjms.2005.10.002
Sigfús A. Schopka, Jón Sólmundsson , Vilhjálmur Þorsteinsson, Guðmundur J. Óskarsson . Áhrif svæðafriðunar á vöxt og viðgang þorsks. Niðurstöður úr þorskmerkingum út af norðanverðum Vestfjörðum og Húnaflóa sumurin 1994 og 1995 / Samanburður á íslensku sumargotssíldinni sem veiddist fyrir austan og vestan land árið 1997-2003. Fjölrit nr. 123. 2006.

2002

Guðmundur J. Óskarsson , Olav Sigurd Kjesbu, Aril Slotte. Predictions of realised fecundity and spawning time in Norwegian spring-spawning herring (Clupea harengus). Journal of Sea Research. 2002;48 (1):59-79. https://doi.org/10.1016/S1385-1101(02)00135-1
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