Blar i Brage IMR på tidsskrift "ICES Journal of Marine Science"
Viser treff 81-100 av 163
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Heat content in the Norwegian Sea, 1995–2010
(Journal article; Peer reviewed, 2012-02-26)Spatio-temporal hydrographic data from the Nordic Seas during spring over the period 1995–2010 were investigated in terms of the relative heat content (RHC) above the density surface σt = 27.9, chosen to capture the changes ... -
Improving management decisions by predicting fish bycatch in the Barents Sea shrimp fishery
(Journal article; Peer reviewed, 2011-11-20)When the bycatch of juvenile fish within the Barents Sea shrimp fishery is too large, the area is closed to fishing for a certain period. Bycatch is estimated from sampled trawl hauls, for which the shrimp yield is recorded, ... -
In situ calibration of observatory broadband echosounders
(Peer reviewed; Journal article, 2020)Today, numerous scientific echosounders are used as continuously monitoring systems in ocean observatories. These echosounders are usually calibrated in shallow water, either in laboratory tanks or at random ocean docks ... -
Increasing the uptake of multispecies models in fisheries management
(Peer reviewed; Journal article, 2023)Multispecies models have existed in a fisheries context since at least the 1970s, but despite much exploration, advancement, and consideration of multispecies models, there remain limited examples of their operational use ... -
Infaunal and epifaunal secondary production in the BarentsSea, with focus on snow crab (Chionoecetes opilio)preyresources and consumption
(Peer reviewed; Journal article, 2022)Since the first observation of snow crab (Chionoecetes opilio) in the Barents Sea in 1996, the population has increased significantly, supporting a commercial fishery on the Norwegian shelf since 2012. To investigate whether ... -
Integrating complementary survey methods to estimate catches in Norway’s complex marine recreational hook-and-line fishery
(Peer reviewed; Journal article, 2022)Marine recreational fishing is popular in Norway, but current estimates of the catches by resident and tourist anglers are lacking due to several challenges, in particular Norway’s long and intricate coastline with no ... -
Lateral-aspect target strength measurements of in situ herring (Clupea harengus)
(Journal article; Peer reviewed, 2009-07)Surveys of schooling herring with the new multi-beam sonar (Simrad MS70) pose new challenges when converting the echo energy to estimates of biomass. Since the sonar projects horizontally, data and models of lateral-aspect ... -
Lateral-aspect target strength measurements of in situ herring (Clupea harengus)
(Journal article; Peer reviewed, 2009-07)Surveys of schooling herring with the new multi-beam sonar (Simrad MS70) pose new challenges when converting the echo energy to estimates of biomass. Since the sonar projects horizontally, data and models of lateral-aspect ... -
Local cod (Gadus morhua) revealed by egg surveys and population genetic analysis after longstanding depletion on the Swedish Skagerrak coast
(Journal article; Peer reviewed, 2018)Dramatic and persistent reductions in Atlantic cod (Gadus morhua) are common in many coastal areas. While offshore cod stocks still were abundant and productive, the Swedish west coast showed signs of diminishing adult cod ... -
Local recruitment of Atlantic cod and putative source spawning areas in a coastal seascape
(Peer reviewed; Journal article, 2021)Increased knowledge on connectivity is crucial to our understanding of the population dynamics, genetic structure, and biogeography of many coastal species. In coastal marine populations, the main factor for structuring ... -
Lofoten–Vesterålen: for cod and cod fisheries, but not for oil?
(Journal article; Peer reviewed, 2013-06-24)Over the last decade, the most controversial issue regarding the management of Norwegian marine waters has been about opening the Lofoten–Vesterålen areas for offshore oil and gas exploration. This paper outlines the ... -
Long-term variation in numbers and biomass of silver eels being produced in two European river systems
(Journal article; Peer reviewed, 2018)The European eel (Anguilla anguilla) population has been in decline at least since the 1960s and reliable regional information, particularly on the spawner production and escapement (i.e. the silver eel life stage), is a ... -
Machine intelligence and the data-driven future of marine science
(Peer reviewed; Journal article, 2019)Oceans constitute over 70% of the earth’s surface, and the marine environment and ecosystems are central to many global challenges. Not only are the oceans an important source of food and other resources, but they also ... -
Machine learning in marine ecology: an overview of techniques and applications
(Peer reviewed; Journal article, 2023)Machine learning covers a large set of algorithms that can be trained to identify patterns in data. Thanks to the increase in the amount of data and computing power available, it has become pervasive across scientific ... -
Macrophytes as habitat for fish
(Peer reviewed; Journal article, 2022)As different macrophyte habitats house different distributions of invertebrates, we questioned if differences in the composition of fish in these habitats also could be identified. Additionally, we addressed the question ... -
Making use of Johan Hjort's “unknown” legacy: reconstruction of a 150-year coastal time-series on northeast Arctic cod (Gadus morhua) liver data reveals long-term trends in energy
(Journal article; Peer reviewed, 2014-03-11)Hidden within the seminal 1914 publication by Johan Hjort, we find what is probably one of the first comprehensive teleost time-series ever published. The series is liver size and fat content of northeast Arctic (NEA) cod ... -
Managing size selectivity: the relevance of compulsory and alternative selection devices in the Northeast Atlantic bottom trawl fishery
(Peer reviewed; Journal article, 2022)Two decades of use of the compulsory selectivity gear configuration in the Northeast Atlantic bottom trawl fishery, which consists of a rigid sorting grid followed by a diamond mesh codend, have revealed problems with ... -
Marine mammal consumption and fisheries removals in the Nordic and Barents Seas
(Peer reviewed; Journal article, 2022)In this study, we assess prey consumption by the marine mammal community in the northeast Atlantic [including 21 taxa, across three regions: (I) the Icelandic shelf, Denmark Strait, and Iceland Sea (ICE); (II) the Greenland ... -
Mass estimates of individual gas-bearing mesopelagic fish from in situ wideband acoustic measurements ground-truthed by biological net sampling
(Peer reviewed; Journal article, 2021)A new acoustic approach to estimate the mass of individual gas-bearing fish at their resident depth at more than 400 m was tested on Cyclothone spp.. Cyclothone are small and slender, and possibly numerically underestimated ... -
Mesopelagic flesh shear viscosity estimation from in situ broadband backscattering measurements by a viscous–elastic model inversion
(Peer reviewed; Journal article, 2021)In fisheries acoustics, target strength (TS) is a key parameter in converting acoustic measurements to biological information such as biomass. Modelling is a versatile tool to estimate TS of marine organisms. For swimbladdered ...