Now showing items 401-420 of 1061

    • Estimating overall size-selection pattern in the bottom trawl fishery for four economically important fish species in the Mediterranean Sea 

      Mytilineou, Chryssi; Herrmann, Bent; Sala, Antonello; Mantopoulou-Palouka, Danai; Megalofonou, Persefoni (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)
      The management of multispecies fisheries, such as the Mediterranean bottom trawl fishery, is always a challenge. However, information on gear selectivity and discards has been studied separately so far. In this paper, the overall size-selection pattern by the trawl codend in the sea and by the fisher onboard the vessel is investigated for four commercially important fish species, Mullus barbatus, ...
    • Reducing catch efficiency of rabbitfish (Siganus oramin) in a shrimp beam trawl fishery of the South China Sea 

      Yang, Bingzhong; Herrmann, Bent; Cheng, Zhaohai (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-07)
      The bycatch of unwanted fish species is a main concern in shrimp beam trawl fishery of the South China Sea. This study evaluated the effect of using combined square-mesh and diamond-mesh codends (CSDM codends) on catch efficiency of a shrimp trawl fishery with the catch comparison and catch ratio approach. The trouser trawl method was applied using the commercial 22-mm diamond mesh codend (D22) as ...
    • Size selectivity and catch efficiency of diamond-mesh codends in demersal trawl fishery for conger pike (Muraenesox cinereus) of the South China Sea 

      Yang, Bingzhong; Herrmann, Bent; Yan, Lei; Li, Jie; Wang, Teng (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-25)
      Size selectivity and catch efficiency of six diamond-mesh codends with different mesh sizes, 25–54 mm (termed as D25-D54), for conger pike (Muraenesox cinereus) were tested and compared using the covered codend method in the South China Sea (SCS). In order to address the present minimum mesh size (MMS) regulations of the trawl fishery for conger pike in the SCS, we quantified the selective properties ...
    • Assessing public preferences for deep sea ecosystem conservation: a choice experiment in Norway and Scotland 

      Ankamah-Yeboah, Isaac; Armstrong, Claire W.; Hynes, Stephen; Bui, Bich Xuân; Simpson, Katherine (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-18)
      ecent events around the world have revealed varying degrees of public support for climate change and environmental regulation. Applying a latent class logit model, this study investigates Norwegian and Scottish public’s economic support for proposed deep sea management policies for novel attributes, identifying the presence of preference heterogeneity. Marine litter and health of fish stocks were ...
    • Mitochondrial Cytochrome Oxidase Subunit 1: A Promising Molecular Marker for Species Identification in Foraminifera 

      Girard, Elsa B.; Langerak, Anouk; Jompa, Jamaluddin; Wangensteen, Owen S.; Macher, Jan-Niklas; Renema, Willem (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-02)
      Traditional morphological methods for species identification are highly time consuming, especially for small organisms, such as Foraminifera, a group of shell-building microbial eukaryotes. To analyze large amounts of samples more efficiently, species identification methods have extended to molecular tools in the last few decades. Although a wide range of phyla have good markers available, for ...
    • Biomaterials and Bioactive Natural Products from Marine Invertebrates: From Basic Research to Innovative Applications 

      Romano, Giovanna; Almeida, Mariana; Coelho, Ana Varela; Cutignano, Adele; Goncalves, Lous G; Hansen, Espen Holst; Khnykin, Denis; Mass, Tali; Ramšak, Andreja; Rocha, Miguel S.; Silva, Tiago H.; Sugni, Michela; Ballarin, Loriano; Genevière, Anne-Marie (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-22)
      Aquatic invertebrates are a major source of biomaterials and bioactive natural products that can find applications as pharmaceutics, nutraceutics, cosmetics, antibiotics, antifouling products and biomaterials. Symbiotic microorganisms are often the real producers of many secondary metabolites initially isolated from marine invertebrates; however, a certain number of them are actually synthesized by ...
    • A High-Affinity Peptide Ligand Targeting Syntenin Inhibits Glioblastoma 

      Haugaard-Kedström, Linda M.; Clemmensen, Louise S.; Sereikaite, Vita; Jin, Zeyu; Fernandes, Eduardo F. A.; Wind, Bianca; Abalde-Gil, Flor; Daberger, Jan; Vistrup-Parry, Maria; Aguilar-Morante, Diana; Leblanc, Raphael; Egea-Jimenez, Antonio L.; Albrigtsen, Marte; Jensen, Kamilla E.; Jensen, Thomas M. T.; Ivarsson, Ylva; Vincentelli, Renaud; Hamerlik, Petra; Andersen, Jeanette Hammer; Zimmermann, Pascale; Lee, Weonate; Strømgaard, Kristian (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-27)
      Despite the recent advances in cancer therapeutics, highly aggressive cancer forms, such as glioblastoma (GBM), still have very low survival rates. The intracellular scaffold protein syntenin, comprising two postsynaptic density protein-95/discs-large/zona occludens-1 (PDZ) domains, has emerged as a novel therapeutic target in highly malignant phenotypes including GBM. Here, we report the development ...
    • A comparative study of the effects of pelleted and extruded feed on growth, financial revenue and nutrient loading of Nile tilapia (Oreochromis niloticus L.) cage culture in a lacustrine environment 

      Musa, Safina; Aura, Christopher Mulanda; Tomasson, Tumi; Sigurgeirsson, Ólafur; Thorarensen, Helgi (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-05)
      We compared the benefits of using extruded feed (EF), against pelleted feed (PF) to guide cage culture investments in Great Lakes. Three out of six cages in the same farm had fish that were fed EF and the other half, belonging to a different farm had fish that were fed PF. The diets were similar in crude protein, lipid and energy content. However, the fiber content in PF was 4 times higher than that ...
    • Monitoring of environmental DNA from nonindigenous species of algae, dinoflagellates and animals in the North East Atlantic 

      Knudsen, Steen Wilhelm; Hesselsøe, Martin; Thaulow, Jens; Agersnap, Sune; Hansen, Brian Klitgaard; Jacobsen, Magnus Wulff; Bekkevold, Dorte; Jensen, Søren K.S.; Møller, Peter Daniel Rask; Andersen, Jesper Harbo (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-14)
      Monitoring the distribution of marine non-indigenous species is a challenging task. To support this monitoring, we developed and validated the specificity of 12 primer-probe assays for detection of environmental DNA (eDNA) from marine species all non-indigenous to Europe. The species include sturgeons, a Pacific red algae, oyster thief, a freshwater hydroid from the Black Sea, Chinese mitten crab, ...
    • Estuarine molecular bycatch as a landscape-wide biomonitoring tool 

      Mariani, Stefano; Harper, Linsey R.; Collins, Rupert A.; Baillie, Charles; Wangensteen, Owen S.; McDevitt, Allan D.; Heddell-Cowie, Morton; Genner, Martin J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-13)
      Environmental DNA analysis is rapidly transforming biodiversity monitoring and bolstering conservation applications worldwide. This approach has been assisted by the development of metabarcoding PCR primers that are suited for detection of a wide range of taxa. However, little effort has gone into exploring the value of the non-target DNA sequences that are generated in every survey, but subsequently ...
    • DnoisE: distance denoising by entropy. An open-source parallelizable alternative for denoising sequence datasets 

      Antich, Adrià; Palacín, Creu; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-19)
      DNA metabarcoding is broadly used in biodiversity studies encompassing a wide range of organisms. Erroneous amplicons, generated during amplification and sequencing procedures, constitute one of the major sources of concern for the interpretation of metabarcoding results. Several denoising programs have been implemented to detect and eliminate these errors. However, almost all denoising software ...
    • Sex steroid dynamics and mRNA transcript profiles of growth- and development-related genes during embryogenesis following induced follicular maturation in European eel 

      Kottmann, Johanna S.; Tveiten, Helge; Miest, Joanna J.; Tomkiewicz, Jonna (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-15)
      Hormones and mRNA transcripts of maternal origin deposited in the egg may affect early embryonic development in oviparous species. These hormones include steroids, such as estradiol-17β (E2), testosterone (T), 11-ketotestosterone (11-kt), 17α,20ß-dihydroxy-4-pregnen-3-one (DHP), and cortisol, which also play an important role in fish reproduction. In European eel, <i>Anguilla anguilla</i>, which ...
    • Do we choose differently after a discussion? Results from a deliberative valuation study in Ireland 

      Aanesen, Margrethe; Armstrong, Claire W.; Van Rensburg, Tom M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
      A criticism against individual-based stated preference surveys is that people seldom make choices in social isolation. An approach used in response to this is deliberative valuation. We conduct a series of valuation workshops including a choice experiment. This involves providing respondents with information and opportunity to discuss. They made their choices individually both before and after the ...
    • Pulling mechanisms and pushing strategies: How to improve Ecosystem Advice Fisheries Management advice within the European Union’s Common Fisheries Policy 

      Ramirez-Monsalve, Paulina; Nielsen, Kåre Nolde; Ballesteros, Marta; Kirkfeldt, Trine; Dickey-Collas, Mark; Delaney, Alyne; Hegland, Troels Jacob; Raakjær, Jesper; Degnbol, Poul (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-17)
      While European policies have progressed towards an Ecosystem Approach to Fisheries Management (EAFM), limited attention has been paid to the implications for its advisory system. This paper analyses the advisory landscape in the European Union (EU) by addressing two questions: to what extent can the needed advice be provided? how prepared is the management system to integrate ecosystem advice? We ...
    • Operationalisation of ecosystem services in support of ecosystem-based marine spatial planning: insights into needs and recommendations 

      Galparsoro, Ibon; Pinarbasi, Kemal; Gissi, Elena; Culhane, Fiona; Gacutan, Jordan; Kotta, Jonne; Cabana, David; Wanke, Sonja; Aps, Robert; Bazzucchi, Daniel; Cozzolino, Giacomo; Custodio, Marco; Fetissov, Mihhail; Inacio, Miguel; Jernberg, Susanna; Piazzi, Alessandro; Paudel, Keshav Prasad; Ziemba, Alex; Depellegrin, Daniel (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-17)
      Marine or maritime spatial planning (MSP) works across borders and sectors to ensure human activities at sea take place in an efficient and sustainable way. The ecosystem service (ES) concept links ecosystem functioning to human wellbeing and has emerged as a potential framework supporting MSP, as it can be used to link different sectorial and environmental policies. However, due to the complexity ...
    • Bioactivity of a Marine Diatom (Porosira glacialis [Grunow] Jorgensen 1905) Cultivated With and Without Factory Smoke CO2 

      Osvik, Renate Døving; Andersen, Jeanette Hammer; Eilertsen, Hans Christian; Genevière, Anne-Marie; Hansen, Espen Holst (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-16)
      Using industrial emissions as a strategy for CO<sub>2</sub> sequestration through carbon capture and utilization (CCU) in cultivation of microalgae can potentially change cultivation factors such as pH, nutrient availability and presence of trace metals, which could alter the growth and metabolism of the microalgae. It is therefore important to investigate whether such changes in culturing conditions ...
    • Are we ready to track climate‐driven shifts in marine species across international boundaries? ‐ A global survey of scientific bottom trawl data 

      Maureaud, Aurore; Frelat, Romain; Pecuchet, Laurène Anne Marie; Shackell, Nancy; Merigot, Bastien; Pinsky, Malin L.; Emblemsvåg, Margrete; Amador, Kofi; Anderson, Sean C.; Arkhipkin, Alexander; Auber, Arnaud; Barri, Ica; Bell, Richard J.; Belmaker, Jonathan; Beukhof, Esther; Camara, Mohamed L.; Guevara-Carrasco, Renato; Choi, Junghwa; Christensen, Helle T.; Conner, Jason; Cubillos, Luis A.; Diadhiou, Hamet D.; Edelist, Dori; Ernst, Billy; Fairweather, Tracey P.; Fock, Heino O.; Friedland, Kevin D.; Garcia, Camilo B.; Gascuel, Didier; Gislason, Henrik; Goren, Menachem; Guitton, Jérôme; Jouffre, Didier; Hattab, Tarek; Hidalgo, Manuel; Kathena, Johannes N.; Knuckey, Ian; Kidé, Saïkou O.; Koen-Alonso, Mariano; Koopman, Matt; Kulik, Vladimir; León, Jacqueline Palacios; Levitt-Barmats, Ya’arit; Lindegren, Martin; Llope, Marcos; Massiot-Granier, Félix; Masski, Hicham; McLean, Matthew; Meissa, Beyah; Mérillet, Laurène; Mihneva, Vesselina; Nunoo, Francis K.E.; O'Driscoll, Richard; Petrova, Elitsa; Ramos, Jorge E.; Refes, Wahid; Román-Marcote, Esther; Siegstad, Helle; Sobrino, Ignacio; Sólmundsson, Jón; Sonin, Oren; Spies, Ingrid; Steingrund, Petur; Stephenson, Fabrice; Stern, Nir; Tserkova, Feriha; Tserpes, Georges; Tzanatos, Evangelos; van Rijn, Itai; van Zwieten, Paul A. M.; Vasilakopoulos, Paraskevas; Yepsen, Daniela V.; Ziegler, Philippe; Thorson, James T.; O'Leary, Cecilia A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-17)
      Marine biota are redistributing at a rapid pace in response to climate change and shifting seascapes. While changes in fish populations and community structure threaten the sustainability of fisheries, our capacity to adapt by tracking and projecting marine species remains a challenge due to data discontinuities in biological observations, lack of data availability, and mismatch between data and ...
    • Effect of an algal amendment on the microbial conversion of coal to methane at different sulfate concentrations from the Powder River Basin, USA 

      Schweitzer, Hannah; Smith, Heidi J.; Barnhart, Elliott P.; Gerlach, Robin; Fields, Matthew W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-29)
      Biogenic methane is estimated to account for one-fifth of the natural gas worldwide and there is great interest in controlling methane from different sources. Biogenic coalbed methane (CBM) production relies on syntrophic associations between fermentative bacteria and methanogenic archaea to anaerobically degrade recalcitrant coal and produce methanogenic substrates. However, very little is known ...
    • Exploring Perspectives of the Validity, Legitimacy and Acceptability of Environmental Valuation using Q Methodology 

      Tinch, Rob; Ankamah-Yeboah, Isaac; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12)
      The extension of market systems and economic appraisal methods to the natural world and allocation of scarce resources is highly controversial and viewed by some as unethical. This has resulted in questions about the appropriate role of valuation and appraisal methods in informing policy and decision-making. We address this issue by assessing the different points of view that exist in marine research, ...
    • Citizens in the Lab: Performance and Validation of eDNA Results 

      Tøttrup, Anders P.; Svenningsen, Lea; Rytter, Maria; Lillemark, Marie Rathcke; Møller, Peter Daniel Rask; Knudsen, Steen Wilhelm (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-16)
      Citizen Science has traditionally been applied in biodiversity monitoring, as the approach holds the potential for conducting large-scale data collections. However, involving citizens in more than data collection is still in its infancy. In this paper, we present the results of an ongoing citizen science project that expands the partnership between citizens and researchers by involving citizens in ...