Vis alle innførsler i samlingen sortert på

 

Nye registreringer

  • Functional roles and redundancy of demersal Barents Sea fish: Ecological implications of environmental change 

    Aune, Magnus; Aschan, Michaela; Greenacre, Michael; Dolgov, Andrey V.; Fossheim, Maria; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-21)
    When facing environmental change and intensified anthropogenic impact on marine ecosystems, extensive knowledge of how these systems are functioning is required in order to manage them properly. However, in high-latitude ecosystems, where climate change is expected to have substantial ecological impact, the ecosystem functions of biological species have received little attention, partly due to the ...
  • External damage to trawl-caught Northeast arctic cod (Gadus morhua): Effect of codend design 

    Tveit, Guro Møen; Sistiaga, Manu Berrondo; Herrmann, Bent; Brinkhof, Jesse (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-22)
    The purpose of this study was to investigate the extent of external damage (gear marks, pressure injuries, ecchymosis and skin abrasion) present on trawl-caught cod (Gadus morhua) and to examine whether the extent of damage could be reduced by introducing changes in the gear. We tested whether changing the 2-panel knotted codend used by the Norwegian trawler fleet operating in the Barents Sea today ...
  • On the numerous concepts in invasion biology 

    Falk-Petersen, Jannike; Bøhn, Thomas; Sandlund, Odd Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2006-01-20)
    The study of biological invasions has triggered the production of a diversity of concepts. The terminology has, however, often been applied inconsistently and inaccurately. This article lists and assesses the most commonly used terms and concepts in invasion ecology. In each case the most coherent definition and use is suggested.
  • The antimicrobial effect of CEN1HC-Br against Propionibacterium acnes and its therapeutic and anti-inflammatory effects on acne vulgaris 

    Han, Rui; Blencke, Hans-Matti; Cheng, Hao; Li, Chun (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-03)
    Propionibacterium acnes is a commensal bacterium, which is involved in acne inflammation. An antimicrobial peptide named CEN1HC-Br, which was isolated and characterized form the green sea urchin, has been shown to possess broad-spectrum antibacterial activity. Little is known concerning the potential effects of its antibacterial and anti-inflammatory properties against P. acnes. To examine the potency ...
  • Trading Off Tourism for Fisheries 

    Xuan, Bui Bich; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-22)
    This paper presents a deterministic bioeconomic model in which the creation of a marine protected area (MPA) is not only a fisheries management tool but also introduced in order to provide tourism amenity benefits. The theoretical model is illustrated with analysis of the Nha Trang Bay (NTB) MPA in Khanh Hoa province in Vietnam, where the anchovy purse seine fishery is considered. An amenity value ...
  • Impact of Multiple Ecological Stressors on a Sub-Arctic Ecosystem: No Interaction Between Extreme Winter Warming Events, Nitrogen Addition and Grazing 

    Bokhorst, Stef; Berg, Matty P.; Edvinsen, Guro Kristine; Ellers, Jacintha; Heitman, Amber; Jaakola, Laura; Mæhre, Hanne K; Phoenix, Gareth K.; Tømmervik, Hans; Bjerke, Jarle W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-30)
    Climate change is one of many ongoing human-induced environmental changes, but few studies consider interactive effects between multiple anthropogenic disturbances. In coastal sub-arctic heathland, we quantified the impact of a factorial design simulating extreme winter warming (WW) events (7 days at 6–7∘C) combined with episodic summer nitrogen (+N) depositions (5 kg N ha-1) on plant winter physiology, ...
  • Environmental DNA: A New Low-Cost Monitoring Tool for Pathogens in Salmonid Aquaculture 

    Peters, Lucy; Spatharis, Sofie; Dario, Maria Augusta; Roca, Inaki Javier Tomey; Kintner, Anna; Kanstad-Hanssen, Øyvind; Llewellyn, Martin S.; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-07)
    Environmental DNA (eDNA) metabarcoding is a relatively new monitoring tool featuring in an increasing number of applications such as the facilitation of the accurate and cost effective detection of species in environmental samples. eDNA monitoring is likely to have a major impact on the ability of salmonid aquaculture industry producers and their regulators to detect the presence and abundance of ...
  • Lactic acid bacteria in finfish - An update 

    Ringø, Einar; Hoseinifar, Seyed Hossein; Ghosh, Koushik; Doan, Hien Van; Beck, Bo Ram; Song, Seong Kyu (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-10)
    A complex and dynamic community of microorganisms, play important roles within the fish gastrointestinal (GI) tract. Of the bacteria colonizing the GI tract, are lactic acid bacteria (LAB) generally considered as favorable microorganism due to their abilities to stimulating host GI development, digestive function, mucosal tolerance, stimulating immune response, and improved disease resistance. ...
  • Transforming conflicts from the bottom-up? Reflections on civil society efforts to empower marginalized fishers in postwar Sri Lanka 

    Scholtens, Joeri; Bavinck, Jan Maarten (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
    We analyze the efforts of an international consortium of academics and activists to understand and address a transnational fisheries conflict in South Asia. The so-called REINCORPFISH project (2010–2016) focused on an asymmetrical conflict between trawler fishers from the Indian state of Tamil Nadu who frequently transgress into Sri Lankan waters and northern Sri Lankan fishers, whose livelihoods ...
  • Intestinal microbiome and its potential functions in bighead carp (Aristichthys nobilis) under different feeding strategies 

    Li, Xuemei; Zhu, Yongjiu; Ringø, Einar; Wang, Xuge; Gong, Jinling; Yang, Deguo (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-03)
    Bighead carps (<i>Aristichthys nobilis</i>) were divided into four groups with different feeding strategies: group A, nature live food only (fertiliser only, 200 g urea + 160 g ethylamine phosphate + 250 g Huangjintai bio-fertiliser); group B, nature live food + 1/2 formulated feed; group C, nature live food + formulated feed; and group D, formulated feed only. The intestinal microbiomes of the ...
  • Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery 

    Brinkhof, Jesse; Herrmann, Bent; Larsen, Roger B.; Veiga-Malta, Tiago (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-26)
    A new codend concept developed and tested exhibited significantly improved quality of caught cod (<i>Gadus morhua</i>) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity and the possibility that higher retention probability could negatively impact the catch pattern ...
  • Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced 

    Blanchet, Marie-Anne; Primicerio, Raul; Smalås, Aslak; Arias-Hansen, Juliana; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)
    In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ...
  • Assessment of the Relative Catch Performance of a Surrounding Net without the Purse Line as an Alternative to a Traditional Boat Seine in Small-Scale Fisheries 

    Notti, Emilio; Brcic, Jure; De Carlo, Francesco; Herrmann, Bent; Lucchetti, Alexandro; Virgili, Massimo; Antonello, Sala (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-30)
    The catch performance of a traditional Ligurian boat seine, which is not in line with the European Union regulation, was compared with an experimental surrounding net without the purse line as a potential legal alternative. The relative catch performance between the two gear types was assessed using a new catch comparison method requiring neither paired data collection nor equal number of hauls with ...
  • Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced 

    Blanchet, Marie-Anne; Primicerio, Raul; Smalås, Aslak; Arias-Hansen, Juliana; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)
    In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ...
  • Effects of inconsistent reporting, regulation changes and market demand on abundance indices of sharks caught by pelagic longliners off southern Africa 

    Jordaan, Gareth L.; Santos, Jorge; Groeneveld, Johan C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-24)
    The assumption of a proportional relationship between catch-per-unit-effort (CPUE) and the abundance of sharks caught by pelagic longliners is tenuous when based on fisher logbooks that report only retained specimens. Nevertheless, commercial logbooks and landings statistics are often the only data available for stock status assessments. Logbook data collected from local and foreign pelagic longline ...
  • Feeding ecology of piscivorous brown trout (Salmo trutta L.) in a subarctic watercourse 

    Jensen, Hallvard; Bøhn, Thomas; Amundsen, Per-Arne; Aspholm, Paul Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2004-02)
    Feeding ecology of piscivorous brown trout was studied in the Pasvik watercourse, Norway and Russia. The watercourse is heavily regulated for hydroelectric purposes, and 5000 brown trout > 25 cm are stocked annually to compensate the negative impacts of the impoundments. Stocked and wild trout had almost identical diets consisting mainly of vendace Coregonus albula and partly of whitefish Coregonus ...
  • Maximum Yield Fishing and Optimal Fleet Composition. A Stage Structured Model Analysis With an Example From the Norwegian North-East Arctic Cod Fishery 

    Helgesen, Irmelin Slettemoen; Skonhoft, Anders; Eide, Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-01)
    A stage structured fishery model with three stages; recruits, immature fish and mature fish is formulated and utilized to analyse maximum sustainable yield (MSY) and optimal harvesting composition in a fishery with two heterogeneous fleets. The stage structured model developed bundles the age classes found in age structured models into stage classes based on their level of maturity, but also the ...
  • Spatio-temporal patterns of genetic variation in Arbacia lixula, a thermophilous sea urchin in expansion in the Mediterranean 

    Pérez-Portela, Rocío; Wangensteen Fuentes, Owen Simon; García-Cisneros, Alex; Valero-Jiménez, Claudio; Palacín, Creu; Turon, Xavier (Journal article; Tidsskriftartikkel; Preprint; Manuskript, 2018-06-14)
    The genetic structure of 13 populations of the amphiatlantic sea urchin <i>Arbacia lixula</i>, as well as temporal genetic changes in three of these localities, were assessed using ten hypervariable microsatellite loci. This thermophilous sea urchin is an important engineer species triggering the formation of barren grounds through its grazing activity. Its abundance seems to be increasing in most ...
  • From PhD to job market: Transforming doctoral training with the SAF21 model 

    Borit, Melania; Weber, Charlotte Teresa; Risan Johnsen, Hanne (Journal article; Tidsskriftartikkel, 2017-03)
  • Under the canopy: Community-wide effects of invasive algae in Marine Protected Areas revealed by metabarcoding 

    Wangensteen Fuentes, Owen Simon; Cebrian, Emma; Palacín, Creu; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-21)
    We analysed with multigene (18S and COI) metabarcoding the effects of the proliferation of invasive seaweeds on rocky littoral communities in two Spanish Marine Protected Areas. The invasive algae studied were <i>Caulerpa cylindracea</i>, <i>Lophocladia lallemandii</i> and <i>Asparagopsis armata</i>. They are canopy-forming, landscape-dominant seaweeds, and we were interested in their effects on the ...

Vis mer