Blar i Brage IMR på forfatter "Espeland, Sigurd Heiberg"

Viser treff 41-51 av 51

    • Oppdatert kunnskapsstatus om kystnær torsk i Sør Norge 

      Aglen, Asgeir; Nedreaas, Kjell; Moland, Even; Knutsen, Halvor; Kleiven, Alf Ring; Johannessen, Tore; Wehde, Henning; Jørgensen, Terje; Espeland, Sigurd Heiberg; Olsen, Esben Moland; Knutsen, Jan Atle (Fisken og Havet;4-2016, Research report, 2016-05)
      English: In a report from 2008 an assessment of coastal cod in southern Norway, from the Swedish border to Stad, was presented, together with suggestions to management initiatives. This report shortly summarize the ...

    • Rapport fra høstundersøkelsene med strandnot i indre og ytre Oslofjord 2018 

      Espeland, Sigurd Heiberg; Knutsen, Halvor (Rapport fra havforskningen;2019 - 1, Research report, 2019)
      Rapporten oppsummerer resultater fra funn som ble gjort ved gjennomføring av forsøksfiske med strandnot i indre og ytre Oslofjord i 2018. Registreringene er gjort som del av Havforskningsinstituttets høstundersøkelse som ...

    • Rapport fra høstundersøkelsene med strandnot i indre og ytre Oslofjord 2022 

      Espeland, Sigurd Heiberg; Knutsen, Halvor (Rapport fra havforskningen;2023 - 13, Research report, 2023)
      Rapporten oppsummerer resultater fra funn som ble gjort ved gjennomføring av forsøksfiske med strandnot i indre og ytre Oslofjord frem til 2022. Registreringene er gjort som del av Havforskningsinstituttets høstundersøkelse ...

    • Rapport fra høstundersøkelsene med strandnot i Indre Oslofjord 2014 

      Espeland, Sigurd Heiberg; Knutsen, Halvor (Rapport fra Havforskningen;Nr. 31-2014, Working paper, 2014-11-27)
      This report gives a short summary of the basic findings on some key species sampled in the beach seine survey in the inner Oslofjord in 2014. The beach seine survey has been conducted in its present form since 1919. Cod ...

    • Restoration of Abundance and Dynamics of Coastal Fish and Lobster Within Northern Marine Protected Areas Across Two Decades 

      Moland, Even; Fernández-Chacón, Albert; Sørdalen, Tonje Knutsen; Villegas-Rios, David; Thorbjørnsen, Susanna Huneide; Halvorsen, Kim Aleksander Tallaksen; Huserbråten, Mats Brockstedt Olsen; Olsen, Esben Moland; Kleiven, Portia Joy Nillos; Kleiven, Alf Ring; Knutsen, Halvor; Espeland, Sigurd Heiberg; Freitas, Carla; Knutsen, Jan Atle (Peer reviewed; Journal article, 2021)
      This article reviews a suite of studies conducted in a network of coastal Marine Protected Areas (MPAs) in Skagerrak, Southeast Norway. In 2006, Norway’s first lobster reserves were implemented, with the aim of protecting ...

    • Small-scale genetic structure in a marine population in relation to water circulation and egg characteristics 

      Ciannelli, Lorenzo; Knutsen, Halvor; Olsen, Esben Moland; Espeland, Sigurd Heiberg; Asplin, Lars; Jelmert, Anders; Knutsen, Jan Atle; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-10)
      Until the last decade it was assumed that most marine species have pronounced gene flow over vast areas, largely because of their potential for dispersal during early life stages. However, recent genetic, modeling, and ...

    • Spatial scale of genetic structuring in coastal cod Gadus morhua and geographic extent of local populations 

      Jorde, Per Erik; Knutsen, Halvor; Espeland, Sigurd Heiberg; Stenseth, Nils Christian (Journal article; Peer reviewed, 2007-08-07)
      We estimated the spatial scale of genetically distinguishable populations of coastal Atlantic cod Gadus morhua using microsatellite DNA markers. Significant overall heterogeneity in allele frequencies was found among 5 cod ...

    • Stabilizing selection on Atlantic cod supergenes through a millennium of extensive exploitation 

      Sodeland, Marte; Jentoft, Sissel; Jorde, Per Erik; Mattingsdal, Morten; Albretsen, Jon; Kleiven, Alf Ring; Synnes, Ann-Elin; Espeland, Sigurd Heiberg; Olsen, Esben Moland; André, Carl; Stenseth, Nils Christian; Knutsen, Halvor (Peer reviewed; Journal article, 2022)
      Life on Earth has been characterized by recurring cycles of ecological stasis and disruption, relating biological eras to geological and climatic transitions through the history of our planet. Due to the increasing degree ...

    • Stabilizing selection on Atlantic cod supergenes through a millennium of extensive exploitation 

      Sodeland, Marte; Jentoft, Sissel; Jorde, Per Erik; Mattingsdal, Morten; Albretsen, Jon; Kleiven, Alf Ring; Synnes, Ann-Elin; Espeland, Sigurd Heiberg; Olsen, Esben Moland; André, Carl; Stenseth, Nils Christian; Knutsen, Halvor (Peer reviewed; Journal article, 2022)
      Life on Earth has been characterized by recurring cycles of ecological stasis and disruption, relating biological eras to geological and climatic transitions through the history of our planet. Due to the increasing degree ...

    • Svar på høring om tillatelse til utslipp fra foreløpig anleggsvirksomhet samt mudring, dumping og utfylling i forbindelse med bygging av Stad skipstunnel. 

      Asplin, Lars; Bienfait, André Marcel; Espeland, Sigurd Heiberg; Fall, Johanna Jennifer Elisabeth; Gagnon, Karine; Grøsvik, Bjørn Einar; Husa, Vivian; Knutsen, Halvor; Kögel, Tanja; van der Meeren, Terje; Moy, Frithjof Emil; Sivle, Lise Doksæter; Steen, Henning; Stiansen, Jan Erik; Stock, Brian; Sørhus, Elin; Valdersnes, Stig (Research report, 2022)

    • Technological creep masks continued decline in a lobster (Homarus gammarus) fishery over a century 

      Kleiven, Alf Ring; Espeland, Sigurd Heiberg; Stiansen, Stian; Ono, Kotaro; Zimmermann, Fabian; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)
      Fishery-dependent data are frequently used to inform management decisions. However, inferences about stock development based on commercial data such as Catch-Per-Unit-Effort (CPUE) can be severely biased due to a phenomenon ...